Add Missing Includes to the Plugin JSON Depth Test

Cap Recursion Depth in the Plugin JSON Converters
Show dummy image for printers without cover on printer selectiondialog (#16235 )
2026-10-07 15:51:08 +00:00 · 2026-10-07 19:38:03 +08:00 · 2026-10-07 19:33:08 +08:00 · 2026-10-07 12:57:28 +03:00 · 2026-10-07 15:54:53 +08:00 · 2026-10-07 15:52:18 +08:00
371 changed files with 1147 additions and 13036 deletions
@@ -1,10 +1,15 @@
 # clang-tidy configuration, enforced by the clang-tidy CI job on the lines a pull
-# request changes (scripts/clang_tidy_diff.py). Only missing includes are reported
-# for now: a file should include the header for every symbol it uses, not rely on
-# the precompiled header or another header's includes. Run with --fix to add them.
+# request changes (scripts/clang_tidy_diff.py). Two things are reported.
+# Missing includes: a file should include the header for every symbol it uses, not
+# rely on the precompiled header or another header's includes. Run with --fix to
+# add them.
+# Using-directives and using-declarations in the global namespace of a header:
+# they reach every file that includes the header, and a using-declaration also
+# makes the header look like the one to include for that name. Qualify the name
+# in the header, and put the using in the source files that want it.
 # Every check listed here gates pull requests, so enable a new one only once the
 # code it flags on touched lines is reasonable to fix in passing.
-Checks: '-*,misc-include-cleaner'
+Checks: '-*,misc-include-cleaner,google-global-names-in-headers'
 WarningsAsErrors: '*'
 CheckOptions:
  # Missing includes only. Builds without the precompiled header break on these.
@@ -74,26 +74,12 @@ jobs:
          set +e
          ./OrcaSlicer_profile_validator -p ${{ github.workspace }}/resources/profiles -l 2 2>&1 | tee ${{ runner.temp }}/validate_system.log
          exit ${PIPESTATUS[0]}
-      # The validator above is the nightly build of main, so it cannot slice profiles that use
-      # settings a PR adds to the engine: it reports their placeholders as undefined. A PR that
-      # changes src/ also runs Build all, whose Slice check runs this same sweep with the
-      # validator built from the PR, so the sweep below only runs for the other PRs.
-      - name: Detect engine changes
-        id: engine_changes
-        if: ${{ github.event_name == 'pull_request' }}
-        run: |
-          base=${{ github.event.pull_request.base.sha }}
-          if git fetch --no-tags --depth=1 origin "$base" && ! git diff --quiet "$base" HEAD -- src/; then
-            echo "changed=true" >> "$GITHUB_OUTPUT"
-            echo "::notice::This PR changes src/, so Build all's Slice check slices the profiles with the PR-built validator."
-          fi
      # Slice a two-colour cube through every printer, and through every system process/filament whose
      # templates no printer's own slice reaches, so every custom g-code and filename_format shipped is
      # expanded (names in {if} branches not taken included) - catches undefined-placeholder /
      # invalid-flow bugs the static checks above cannot see.
      - name: validate slice (expand custom g-code)
        id: validate_slice
-        if: ${{ steps.engine_changes.outputs.changed != 'true' }}
        continue-on-error: true
        run: |
          set +e
@@ -4,15 +4,17 @@ OrcaSlicer — open-source C++17 3D slicer. wxWidgets GUI, CMake build system.

 ## Build Commands

+Build the Release configuration unless asked otherwise.
+
 ```bash
 # macOS
-cmake --build build/arm64 --config RelWithDebInfo --target all --
+cmake --build build/arm64 --config Release --target all --

 # Linux
-cmake --build build --config RelWithDebInfo --target all --
+cmake --build build --config Release --target all --

-# Windows (replace %build_type% with Debug/Release/RelWithDebInfo)
-cmake --build . --config %build_type% --target ALL_BUILD -- -m
+# Windows
+cmake --build . --config Release --target ALL_BUILD -- -m
 ```

 ## Testing
@@ -88,18 +88,6 @@ struct NfpPConfig {
     */
    bool explore_holes = false;

-    /**
-     * @brief Keep the final pile on the bin.
-     *
-     * The final alignment centres the pile on the alignment target. A target
-     * near an edge (a belt printer starts its parts at the leading end of the
-     * belt) would push part of a pile that is larger than the room around that
-     * point off the bed; with this set the pile stops at the edge instead, and a
-     * pile that does not fit along an axis is centred on it. Off by default, so
-     * the alignment of every other printer is unchanged.
-     */
-    bool clamp_to_bin = false;
-
    /**
     * @brief If true, use all CPUs available. Run on a single core otherwise.
     */
@@ -1123,24 +1111,7 @@ private:
        default: ; // DONT_ALIGN
        }

-        auto d = cb - ci;
-
-        // Keep the pile on the bin (see Config::clamp_to_bin). The items' boxes carry
-        // their inflation, which is the margin left at the edge.
-        if (config_.clamp_to_bin) {
-            auto on_bin = [](Coord lo, Coord hi, Coord bin_lo, Coord bin_hi, Coord shift) {
-                if (hi - lo >= bin_hi - bin_lo)
-                    return (bin_lo + bin_hi) / 2 - (lo + hi) / 2;
-                if (lo + shift < bin_lo)
-                    shift = bin_lo - lo;
-                if (hi + shift > bin_hi)
-                    shift = bin_hi - hi;
-                return shift;
-            };
-            setX(d, on_bin(getX(bb.minCorner()), getX(bb.maxCorner()), getX(bbin.minCorner()), getX(bbin.maxCorner()), getX(d)));
-            setY(d, on_bin(getY(bb.minCorner()), getY(bb.maxCorner()), getY(bbin.minCorner()), getY(bbin.maxCorner()), getY(d)));
-            cb = ci + d;
-        }
+        auto d = cb - ci;       

        // BBS make sure the item won't clash with excluded regions
        // do we have wipe tower after arranging?
@@ -1,79 +0,0 @@
-#!/usr/bin/env python3
-"""Belt temperature-tower asset generator (discrete-provini design).
-
-A vertical temperature tower cannot be sliced on a belt printer, so lay a row of
-DISCRETE provini (one per temperature) along the belt (designed Y) with a fixed
-surface gap. Each provino is the chevron+arc unit (belt_temp_provino_unit.stl,
-keel-first); its temperature is ENGRAVED upright into the 50 mm face — a raised
-number would be an unsupported overhang on the belt. The C++ calib_temp belt branch
-(Plater.cpp) injects one M104 per zone 70 layers INTO provino i:
-  print_z[i] = i * PITCH * cos(theta) + 70 * layer_height   (theta = 45)
-inside the body, not in the empty inter-provino gap (which has no sliced layers for
-the event to attach to). PITCH below is the shared geometry contract with that code —
-keep them in sync.
-
-Generates one STL per filament temp range used by Temp_Calibration_Dlg.
-"""
-import numpy as np, trimesh, os
-from matplotlib.textpath import TextPath
-from matplotlib.font_manager import FontProperties
-from shapely.geometry import Polygon as ShPoly
-from shapely.ops import unary_union
-
-HERE = os.path.dirname(os.path.abspath(__file__))
-UNIT = os.path.join(HERE, 'belt_temp_provino_unit.stl')   # single provino, keel-first
-SURF_GAP = 25.0            # surface-to-surface gap between provini (mm) — user spec
-TEXT_H = 9.0
-TEXT_DEPTH = 0.8           # engraving depth (numbers are CUT into the face, not raised:
-                          # a raised number is an unsupported Y-overhang on the belt)
-TEXT_OVERSHOOT = 0.6       # extra height poking out of the face for a clean boolean cut
-
-# Temperature ranges (start, end) per filament family, 5 C step. File name encodes them.
-RANGES = [(230,190),(270,230),(250,230),(280,240),(240,210),(320,280)]
-
-unit = trimesh.load(UNIT)
-dY = unit.bounds[1,1] - unit.bounds[0,1]
-PITCH = dY + SURF_GAP                       # designed-Y pitch == C++ contract constant
-print(f"unit dY={dY:.2f}  PITCH={PITCH:.3f}  (C++ contract: print_z[i]=i*{PITCH:.3f}*cos45)")
-
-# 50 mm face normal (0,-1,1)/sqrt2 ; UPRIGHT basis u=+X det(+1) (verified non-mirrored)
-n = np.array([0,-1,1.])/np.sqrt(2)
-u = np.array([1,0,0.]); v = np.array([0,1,1.])/np.sqrt(2)
-R = np.column_stack([u,v,n])
-fn = unit.face_normals; fc = unit.triangles_center; fa = unit.area_faces
-sel = (fn@n) > 0.9
-face_c = (fc[sel]*fa[sel,None]).sum(0)/fa[sel].sum()
-
-def text_mesh(s):
-    tp = TextPath((0,0), s, size=TEXT_H, prop=FontProperties(family='DejaVu Sans'))
-    rings = [ShPoly(p) for p in tp.to_polygons() if len(p)>=3]
-    rings.sort(key=lambda r:r.area, reverse=True)
-    used=[False]*len(rings); parts=[]
-    for i,o in enumerate(rings):
-        if used[i]: continue
-        holes=[]
-        for j in range(i+1,len(rings)):
-            if not used[j] and o.contains(rings[j]): holes.append(rings[j].exterior.coords); used[j]=True
-        parts.append(ShPoly(o.exterior.coords,holes)); used[i]=True
-    poly = unary_union(parts)
-    geoms = list(poly.geoms) if poly.geom_type=='MultiPolygon' else [poly]
-    m = trimesh.util.concatenate([trimesh.creation.extrude_polygon(g,height=TEXT_DEPTH+TEXT_OVERSHOOT) for g in geoms])
-    c = m.bounds.mean(axis=0); m.apply_translation([-c[0],-c[1],0]); return m
-
-for t_start, t_end in RANGES:
-    temps = list(range(t_start, t_end-1, -5))
-    parts=[]
-    for i,T in enumerate(temps):
-        c = unit.copy(); c.apply_translation([0, i*PITCH, 0])
-        t = text_mesh(str(T)); M=np.eye(4); M[:3,:3]=R; t.apply_transform(M)
-        # place the text spanning from TEXT_DEPTH inside the face to TEXT_OVERSHOOT outside,
-        # then CUT it out of the provino (engrave) — no raised material, no Y-overhang.
-        t.apply_translation(face_c - n*TEXT_DEPTH + np.array([0,i*PITCH,0]))
-        c = trimesh.boolean.difference([c, t], engine='manifold')
-        parts.append(c)
-    asset = trimesh.util.concatenate(parts)
-    out = os.path.join(HERE, f"belt_temp_tower_{t_start}_{t_end}.stl")
-    asset.export(out)
-    dims = np.round(asset.bounds[1]-asset.bounds[0],1)
-    wt = all(p.is_watertight for p in parts)
-    print(f"  {t_start}->{t_end}: {len(temps)} zones  bbox={dims}  watertight={wt}  -> {os.path.basename(out)}")
@@ -1,13 +1,9 @@
 {
 	"name": "Custom Printer",
-	"version": "02.04.00.08",
+	"version": "02.04.00.07",
 	"force_update": "0",
 	"description": "My configurations",
 	"machine_model_list": [
-		{
-			"name": "Generic Belt Printer",
-			"sub_path": "machine/MyBeltPrinter.json"
-		},
 		{
 			"name": "Generic Klipper Printer",
 			"sub_path": "machine/MyKlipper.json"
@@ -54,10 +50,6 @@
 			"name": "0.08mm Extra Fine @MyKlipper",
 			"sub_path": "process/0.08mm Extra Fine @MyKlipper.json"
 		},
-		{
-			"name": "0.12mm Fine @MyBeltPrinter",
-			"sub_path": "process/0.12mm Fine @MyBeltPrinter.json"
-		},
 		{
 			"name": "0.12mm Fine @MyKlipper",
 			"sub_path": "process/0.12mm Fine @MyKlipper.json"
@@ -70,10 +62,6 @@
 			"name": "0.16mm Optimal @MyKlipper",
 			"sub_path": "process/0.16mm Optimal @MyKlipper.json"
 		},
-		{
-			"name": "0.20mm Standard @MyBeltPrinter",
-			"sub_path": "process/0.20mm Standard @MyBeltPrinter.json"
-		},
 		{
 			"name": "0.20mm Standard @MyKlipper",
 			"sub_path": "process/0.20mm Standard @MyKlipper.json"
@@ -274,10 +262,6 @@
 			"name": "MyKlipper 0.8 nozzle",
 			"sub_path": "machine/MyKlipper 0.8 nozzle.json"
 		},
-		{
-			"name": "fdm_belt_common",
-			"sub_path": "machine/fdm_belt_common.json"
-		},
 		{
 			"name": "fdm_toolchanger_common",
 			"sub_path": "machine/fdm_toolchanger_common.json"
@@ -290,22 +274,6 @@
 			"name": "MyRRF 0.4 nozzle",
 			"sub_path": "machine/MyRRF 0.4 nozzle.json"
 		},
-		{
-			"name": "MyBeltPrinter 0.2 nozzle",
-			"sub_path": "machine/MyBeltPrinter 0.2 nozzle.json"
-		},
-		{
-			"name": "MyBeltPrinter 0.4 nozzle",
-			"sub_path": "machine/MyBeltPrinter 0.4 nozzle.json"
-		},
-		{
-			"name": "MyBeltPrinter 0.6 nozzle",
-			"sub_path": "machine/MyBeltPrinter 0.6 nozzle.json"
-		},
-		{
-			"name": "MyBeltPrinter 0.8 nozzle",
-			"sub_path": "machine/MyBeltPrinter 0.8 nozzle.json"
-		},
 		{
 			"name": "MyToolChanger 0.2 nozzle",
 			"sub_path": "machine/MyToolChanger 0.2 nozzle.json"
@@ -1,27 +0,0 @@
-{
-	"type": "machine",
-	"name": "MyBeltPrinter 0.2 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "3w1uyJdmm14QhDnH",
-	"instantiation": "true",
-	"printer_model": "Generic Belt Printer",
-	"default_print_profile": "0.12mm Fine @MyBeltPrinter",
-	"nozzle_diameter": [
-		"0.2"
-	],
-	"max_layer_height": [
-		"0.16"
-	],
-	"min_layer_height": [
-		"0.04"
-	],
-	"printer_variant": "0.2",
-	"printable_area": [
-		"0x0",
-		"350x0",
-		"350x350",
-		"0x350"
-	],
-	"printable_height": "300"
-}
@@ -1,20 +0,0 @@
-{
-	"type": "machine",
-	"name": "MyBeltPrinter 0.4 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "6nRHUtvJOUffocbu",
-	"instantiation": "true",
-	"printer_model": "Generic Belt Printer",
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"printer_variant": "0.4",
-	"printable_area": [
-		"0x0",
-		"350x0",
-		"350x350",
-		"0x350"
-	],
-	"printable_height": "300"
-}
@@ -1,26 +0,0 @@
-{
-	"type": "machine",
-	"name": "MyBeltPrinter 0.6 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "K0m9HbUNwKT4UCJV",
-	"instantiation": "true",
-	"printer_model": "Generic Belt Printer",
-	"nozzle_diameter": [
-		"0.6"
-	],
-	"max_layer_height": [
-		"0.4"
-	],
-	"min_layer_height": [
-		"0.12"
-	],
-	"printer_variant": "0.6",
-	"printable_area": [
-		"0x0",
-		"350x0",
-		"350x350",
-		"0x350"
-	],
-	"printable_height": "300"
-}
@@ -1,26 +0,0 @@
-{
-	"type": "machine",
-	"name": "MyBeltPrinter 0.8 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "rHAweDz4eNwttPNA",
-	"instantiation": "true",
-	"printer_model": "Generic Belt Printer",
-	"nozzle_diameter": [
-		"0.8"
-	],
-	"max_layer_height": [
-		"0.6"
-	],
-	"min_layer_height": [
-		"0.2"
-	],
-	"printer_variant": "0.8",
-	"printable_area": [
-		"0x0",
-		"350x0",
-		"350x350",
-		"0x350"
-	],
-	"printable_height": "300"
-}
@@ -1,12 +0,0 @@
-{
-	"type": "machine_model",
-	"name": "Generic Belt Printer",
-	"model_id": "my_belt_01",
-	"nozzle_diameter": "0.4;0.2;0.6;0.8",
-	"machine_tech": "FFF",
-	"family": "MyPrinter",
-	"bed_model": "Custom_350_bed.stl",
-	"bed_texture": "orcaslicer_bed_texture.svg",
-	"hotend_model": "",
-	"default_materials": "Generic PLA @System;Generic PLA-CF @System;Generic PETG @System;Generic TPU @System;Generic PC @System;Generic PVA @System;Generic PA @System;Generic PA-CF @System"
-}
@@ -1,95 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_belt_common",
-	"inherits": "fdm_klipper_common",
-	"from": "system",
-	"instantiation": "false",
-	"gcode_flavor": "klipper",
-	"single_extruder_multi_material": "0",
-	"default_filament_profile": [
-		"Generic PLA @System"
-	],
-	"default_print_profile": "0.20mm Standard @MyBeltPrinter",
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"deretraction_speed": [
-		"30"
-	],
-	"extruder_colour": [
-		"#FCE94F"
-	],
-	"extruder_offset": [
-		"0x0"
-	],
-	"long_retractions_when_cut": [
-		"0"
-	],
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_length_toolchange": [
-		"2"
-	],
-	"retract_lift_above": [
-		"0"
-	],
-	"retract_lift_below": [
-		"0"
-	],
-	"retract_lift_enforce": [
-		"All Surfaces"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_distances_when_cut": [
-		"18"
-	],
-	"retraction_length": [
-		"0.8"
-	],
-	"retraction_minimum_travel": [
-		"1"
-	],
-	"retraction_speed": [
-		"30"
-	],
-	"travel_slope": [
-		"3"
-	],
-	"wipe": [
-		"1"
-	],
-	"wipe_distance": [
-		"1"
-	],
-	"z_hop": [
-		"0"
-	],
-	"z_hop_types": [
-		"Normal Lift"
-	],
-	"gcode_remap_x": "rev_x",
-	"gcode_remap_y": "pos_z",
-	"gcode_remap_z": "pos_y",
-	"belt_printer": "1",
-	"belt_slice_rotation": "x",
-	"belt_slice_rotation_angle": "45",
-	"build_plate_tilt_x": "45",
-	"purge_in_prime_tower": "0",
-	"scan_first_layer": "0",
-	"auxiliary_fan": "0"
-}
@@ -1,20 +0,0 @@
-{
-	"type": "process",
-	"name": "0.12mm Fine @MyBeltPrinter",
-	"inherits": "fdm_process_klipper_common",
-	"from": "system",
-	"setting_id": "EugqqdLJ423bgEwN",
-	"instantiation": "true",
-	"layer_height": "0.12",
-	"initial_layer_print_height": "0.12",
-	"bottom_shell_layers": "5",
-	"top_shell_layers": "6",
-	"support_top_z_distance": "0.08",
-	"support_bottom_z_distance": "0.08",
-	"skirt_loops": "0",
-	"skirt_distance": "0",
-	"compatible_printers": [
-		"MyBeltPrinter 0.2 nozzle",
-		"MyBeltPrinter 0.4 nozzle"
-	]
-}
@@ -1,17 +0,0 @@
-{
-	"type": "process",
-	"name": "0.20mm Standard @MyBeltPrinter",
-	"inherits": "fdm_process_klipper_common",
-	"from": "system",
-	"setting_id": "YzCDAgH3uLOM53pF",
-	"instantiation": "true",
-	"layer_height": "0.2",
-	"initial_layer_print_height": "0.2",
-	"skirt_loops": "0",
-	"skirt_distance": "0",
-	"compatible_printers": [
-		"MyBeltPrinter 0.4 nozzle",
-		"MyBeltPrinter 0.6 nozzle",
-		"MyBeltPrinter 0.8 nozzle"
-	]
-}
@@ -1,54 +0,0 @@
-{
-    "name": "IdeaFormer",
-    "version": "02.00.00.06",
-    "force_update": "0",
-    "description": "IdeaFormer belt printer configurations",
-    "machine_model_list": [
-        {
-            "name": "IdeaFormer IR3 V2",
-            "sub_path": "machine/IdeaFormer IR3 V2.json"
-        }
-    ],
-    "process_list": [
-        {
-            "name": "fdm_process_common",
-            "sub_path": "process/fdm_process_common.json"
-        },
-        {
-            "name": "0.20mm Standard @IdeaFormer IR3 V2",
-            "sub_path": "process/0.20mm Standard @IdeaFormer IR3 V2.json"
-        }
-    ],
-    "filament_list": [
-        {
-            "name": "Generic PLA @IdeaFormer IR3 V2",
-            "sub_path": "filament/Generic PLA @IdeaFormer IR3 V2.json"
-        },
-        {
-            "name": "eSUN PLA @IdeaFormer IR3 V2",
-            "sub_path": "filament/eSUN PLA @IdeaFormer IR3 V2.json"
-        },
-        {
-            "name": "Generic PETG @IdeaFormer IR3 V2",
-            "sub_path": "filament/Generic PETG @IdeaFormer IR3 V2.json"
-        }
-    ],
-    "machine_list": [
-        {
-            "name": "fdm_machine_common",
-            "sub_path": "machine/fdm_machine_common.json"
-        },
-        {
-            "name": "fdm_klipper_common",
-            "sub_path": "machine/fdm_klipper_common.json"
-        },
-        {
-            "name": "fdm_belt_common",
-            "sub_path": "machine/fdm_belt_common.json"
-        },
-        {
-            "name": "IdeaFormer IR3 V2 0.4 nozzle",
-            "sub_path": "machine/IdeaFormer IR3 V2 0.4 nozzle.json"
-        }
-    ]
-}
@@ -1,77 +0,0 @@
-{
-	"type": "filament",
-	"name": "Generic PETG @IdeaFormer IR3 V2",
-	"inherits": "Generic PETG @System",
-	"from": "system",
-	"setting_id": "n4zaXcUUzTqAxq5f",
-	"instantiation": "true",
-	"filament_extruder_variant": [
-		"Direct Drive Standard"
-	],
-	"compatible_printers": [
-		"IdeaFormer IR3 V2 0.4 nozzle"
-	],
-	"filament_type": [
-		"PETG"
-	],
-	"filament_vendor": [
-		"Generic"
-	],
-	"filament_settings_id": [
-		"Generic PETG @IdeaFormer IR3 V2"
-	],
-	"filament_flow_ratio": [
-		"0.95"
-	],
-	"filament_cost": [
-		"25"
-	],
-	"nozzle_temperature": [
-		"240"
-	],
-	"nozzle_temperature_initial_layer": [
-		"245"
-	],
-	"cool_plate_temp": [
-		"80"
-	],
-	"cool_plate_temp_initial_layer": [
-		"80"
-	],
-	"fan_min_speed": [
-		"40"
-	],
-	"fan_max_speed": [
-		"60"
-	],
-	"overhang_fan_threshold": [
-		"25%"
-	],
-	"overhang_fan_speed": [
-		"80"
-	],
-	"full_fan_speed_layer": [
-		"8"
-	],
-	"slow_down_min_speed": [
-		"20"
-	],
-	"slow_down_layer_time": [
-		"4"
-	],
-	"fan_cooling_layer_time": [
-		"100"
-	],
-	"filament_retraction_length": [
-		"2"
-	],
-	"filament_retraction_speed": [
-		"40"
-	],
-	"filament_deretraction_speed": [
-		"40"
-	],
-	"filament_start_gcode": [
-		"; Generic PETG @IdeaFormer IR3 V2 — belt PETG, bed 80C"
-	]
-}
@@ -1,65 +0,0 @@
-{
-	"type": "filament",
-	"name": "Generic PLA @IdeaFormer IR3 V2",
-	"inherits": "Generic PLA @System",
-	"from": "system",
-	"setting_id": "1xjycsEAFh6KQIhp",
-	"instantiation": "true",
-	"filament_extruder_variant": [
-		"Direct Drive Standard"
-	],
-	"compatible_printers": [
-		"IdeaFormer IR3 V2 0.4 nozzle"
-	],
-	"filament_type": [
-		"PLA"
-	],
-	"filament_vendor": [
-		"Generic"
-	],
-	"filament_settings_id": [
-		"Generic PLA @IdeaFormer IR3 V2"
-	],
-	"nozzle_temperature": [
-		"215"
-	],
-	"hot_plate_temp": [
-		"75"
-	],
-	"hot_plate_temp_initial_layer": [
-		"75"
-	],
-	"cool_plate_temp": [
-		"75"
-	],
-	"cool_plate_temp_initial_layer": [
-		"75"
-	],
-	"textured_plate_temp": [
-		"75"
-	],
-	"textured_plate_temp_initial_layer": [
-		"75"
-	],
-	"close_fan_the_first_x_layers": [
-		"3"
-	],
-	"full_fan_speed_layer": [
-		"8"
-	],
-	"slow_down_min_speed": [
-		"20"
-	],
-	"filament_retraction_length": [
-		"1.5"
-	],
-	"filament_retraction_speed": [
-		"35"
-	],
-	"filament_deretraction_speed": [
-		"30"
-	],
-	"filament_start_gcode": [
-		"; Generic PLA @IdeaFormer IR3 V2 — belt PLA, bed 75C"
-	]
-}
@@ -1,36 +0,0 @@
-{
-	"type": "filament",
-	"name": "eSUN PLA @IdeaFormer IR3 V2",
-	"inherits": "Generic PLA @IdeaFormer IR3 V2",
-	"from": "system",
-	"setting_id": "XqkviBmFHEglXueX",
-	"filament_id": "OFkrxQC4",
-	"instantiation": "true",
-	"compatible_printers": [
-		"IdeaFormer IR3 V2 0.4 nozzle"
-	],
-	"filament_type": [
-		"PLA"
-	],
-	"filament_vendor": [
-		"eSUN"
-	],
-	"filament_settings_id": [
-		"eSUN PLA @IdeaFormer IR3 V2"
-	],
-	"nozzle_temperature_initial_layer": [
-		"200"
-	],
-	"nozzle_temperature": [
-		"200"
-	],
-	"enable_pressure_advance": [
-		"1"
-	],
-	"pressure_advance": [
-		"0.12"
-	],
-	"filament_max_volumetric_speed": [
-		"20"
-	]
-}
@@ -1,98 +0,0 @@
-{
-	"type": "machine",
-	"name": "IdeaFormer IR3 V2 0.4 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "MDQZgwRgg72lmjtu",
-	"instantiation": "true",
-	"printer_model": "IdeaFormer IR3 V2",
-	"printer_variant": "0.4",
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"printable_area": [
-		"0x0",
-		"250x0",
-		"250x2000",
-		"0x2000"
-	],
-	"printable_height": "250",
-	"belt_printer_infinite_y": "1",
-	"thumbnails": [
-		"48x48/PNG",
-		"300x300/PNG"
-	],
-	"default_filament_profile": [
-		"Generic PLA @IdeaFormer IR3 V2"
-	],
-	"default_print_profile": "0.20mm Standard @IdeaFormer IR3 V2",
-	"use_relative_e_distances": "1",
-	"machine_max_acceleration_extruding": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_retracting": [
-		"1000",
-		"1000"
-	],
-	"machine_max_acceleration_travel": [
-		"9000",
-		"9000"
-	],
-	"machine_max_acceleration_x": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_y": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_z": [
-		"100",
-		"100"
-	],
-	"machine_max_jerk_x": [
-		"10",
-		"10"
-	],
-	"machine_max_jerk_y": [
-		"10",
-		"10"
-	],
-	"machine_max_jerk_z": [
-		"0.4",
-		"0.4"
-	],
-	"machine_max_speed_e": [
-		"60",
-		"60"
-	],
-	"machine_max_speed_x": [
-		"500",
-		"500"
-	],
-	"machine_max_speed_y": [
-		"500",
-		"500"
-	],
-	"machine_max_speed_z": [
-		"20",
-		"20"
-	],
-	"retraction_length": [
-		"2"
-	],
-	"retraction_speed": [
-		"40"
-	],
-	"deretraction_speed": [
-		"40"
-	],
-	"retract_lift_below": [
-		"300"
-	],
-	"machine_start_gcode": "; === IdeaFormer IR3 V2 Belt Printer Start ===\n; Axes: X=lateral, Y=gantry height (probe), Z=belt\nG90 ; absolute positioning\nM82 ; absolute extruder\nG21 ; millimeters\nG28 ; home all axes\nG1 Y20 F500 ; lift nozzle 20mm from belt\n; Bed + hotend temps come from the active filament profile. Belt PLA requires 75 C bed — use Generic/eSun PLA @IdeaFormer IR3 V2 filament presets to get it automatically.\nM140 S[hot_plate_temp_initial_layer] ; set bed temp\nM104 S[nozzle_temperature_initial_layer] ; hotend temp\nM109 S[nozzle_temperature_initial_layer] ; wait hotend\nM190 S[hot_plate_temp_initial_layer] ; wait bed\n; --- Purge blob ---\nG92 E0 ; zero extruder\nG1 Y.1 ; nozzle 0.1mm above belt\nG1 E15 F1000 ; purge 15mm blob\nG1 Z20 E25 F800 ; belt advance 20mm + extrude\nG1 E23 ; retract 2mm\nG28 Y ; re-probe belt surface\nG1 E25 ; de-retract\n; --- Prime lines (full 250mm bed width) ---\nFMS_on ; filament motion sensor\nG1 X250 E50 F2000 ; prime line 1\nG92 Z0 ; reset belt origin\nG1 Z.4 ; belt advance 0.4mm\nG1 X0 E75 ; prime line 2\nG1 F1000 ; default feedrate\nG92 E0 Z0 ; zero extruder + belt = print origin\n",
-	"machine_end_gcode": "; === IdeaFormer IR3 V2 Belt Printer End ===\nM400 ; wait for moves to finish\nM104 S0 ; heater off\nM140 S0 ; bed off\nG92 E0 ; zero extruder\nG1 E-5 F300 ; retract 5mm\nG4 P5000 ; wait for ooze\nG91 ; relative mode - keep every end move relative on a belt\nG1 Y20 F1000 ; raise gantry 20mm for clearance over the part\nG1 Z676 F3000 ; advance belt one full machine-depth to eject the part and clean the belt\nG90 ; back to absolute\nG28 X ; home X only - NEVER 'G28' all: that homes Z/belt and reverses the whole print back into the gantry\nFMS_off ; filament motion sensor off\nBED_MESH_CLEAR\nM84 ; disable motors\n",
-	"machine_pause_gcode": "PAUSE",
-	"layer_change_gcode": "G92 E0 ; belt: reset extruder at layer change (relative E)"
-}
@@ -1,12 +0,0 @@
-{
-	"type": "machine_model",
-	"name": "IdeaFormer IR3 V2",
-	"model_id": "IdeaFormer_IR3_V2",
-	"nozzle_diameter": "0.4",
-	"machine_tech": "FFF",
-	"family": "IdeaFormer",
-	"bed_model": "",
-	"bed_texture": "",
-	"hotend_model": "",
-	"default_materials": "Generic PLA @IdeaFormer IR3 V2;Generic PETG @IdeaFormer IR3 V2"
-}
@@ -1,98 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_belt_common",
-	"inherits": "fdm_klipper_common",
-	"from": "system",
-	"instantiation": "false",
-	"gcode_flavor": "klipper",
-	"single_extruder_multi_material": "0",
-	"default_filament_profile": [
-		"Generic PLA @System"
-	],
-	"default_print_profile": "0.20mm Standard @IdeaFormer IR3 V2",
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"deretraction_speed": [
-		"30"
-	],
-	"extruder_colour": [
-		"#FCE94F"
-	],
-	"extruder_offset": [
-		"0x0"
-	],
-	"long_retractions_when_cut": [
-		"0"
-	],
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_length_toolchange": [
-		"2"
-	],
-	"retract_lift_above": [
-		"0"
-	],
-	"retract_lift_below": [
-		"0"
-	],
-	"retract_lift_enforce": [
-		"All Surfaces"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_distances_when_cut": [
-		"18"
-	],
-	"retraction_length": [
-		"0.8"
-	],
-	"retraction_minimum_travel": [
-		"1"
-	],
-	"retraction_speed": [
-		"30"
-	],
-	"travel_slope": [
-		"3"
-	],
-	"wipe": [
-		"1"
-	],
-	"wipe_distance": [
-		"1"
-	],
-	"z_hop": [
-		"0"
-	],
-	"z_hop_types": [
-		"Normal Lift"
-	],
-	"gcode_remap_x": "rev_x",
-	"gcode_remap_y": "pos_z",
-	"gcode_remap_z": "pos_y",
-	"printer_extruder_id": [
-		"1"
-	],
-	"belt_printer": "1",
-	"belt_slice_rotation": "x",
-	"belt_slice_rotation_angle": "45",
-	"build_plate_tilt_x": "45",
-	"purge_in_prime_tower": "0",
-	"scan_first_layer": "0",
-	"auxiliary_fan": "0"
-}
@@ -1,140 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_klipper_common",
-	"inherits": "fdm_machine_common",
-	"from": "system",
-	"instantiation": "false",
-	"gcode_flavor": "klipper",
-	"machine_max_acceleration_e": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_extruding": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_retracting": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_travel": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_x": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_y": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_z": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_e": [
-		"25",
-		"25"
-	],
-	"machine_max_speed_x": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_y": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_z": [
-		"12",
-		"12"
-	],
-	"machine_max_jerk_e": [
-		"2.5",
-		"2.5"
-	],
-	"machine_max_jerk_x": [
-		"9",
-		"9"
-	],
-	"machine_max_jerk_y": [
-		"9",
-		"9"
-	],
-	"machine_max_jerk_z": [
-		"0.2",
-		"0.4"
-	],
-	"machine_min_extruding_rate": [
-		"0",
-		"0"
-	],
-	"machine_min_travel_rate": [
-		"0",
-		"0"
-	],
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"printable_height": "250",
-	"extruder_clearance_radius": "65",
-	"extruder_clearance_height_to_rod": "36",
-	"extruder_clearance_height_to_lid": "140",
-	"printer_settings_id": "",
-	"printer_technology": "FFF",
-	"printer_variant": "0.4",
-	"retraction_minimum_travel": [
-		"1"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_length": [
-		"0.8"
-	],
-	"retract_length_toolchange": [
-		"2"
-	],
-	"z_hop": [
-		"0.4"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retraction_speed": [
-		"30"
-	],
-	"deretraction_speed": [
-		"30"
-	],
-	"z_hop_types": "Normal Lift",
-	"single_extruder_multi_material": "1",
-	"change_filament_gcode": "",
-	"wipe": [
-		"1"
-	],
-	"default_filament_profile": [
-		"Generic PLA @System"
-	],
-	"default_print_profile": "0.20mm Standard @MyKlipper",
-	"bed_exclude_area": [
-		"0x0"
-	],
-	"machine_start_gcode": "M190 S[bed_temperature_initial_layer_single]\nM109 S[nozzle_temperature_initial_layer]\nPRINT_START EXTRUDER=[nozzle_temperature_initial_layer] BED=[bed_temperature_initial_layer_single]\n",
-	"machine_end_gcode": "PRINT_END",
-	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
-	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
-	"machine_pause_gcode": "PAUSE",
-	"scan_first_layer": "0",
-	"nozzle_type": "undefine",
-	"auxiliary_fan": "0"
-}
@@ -1,118 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_machine_common",
-	"from": "system",
-	"instantiation": "false",
-	"printer_technology": "FFF",
-	"deretraction_speed": [
-		"40"
-	],
-	"extruder_colour": [
-		"#FCE94F"
-	],
-	"extruder_offset": [
-		"0x0"
-	],
-	"gcode_flavor": "marlin",
-	"machine_max_acceleration_e": [
-		"5000"
-	],
-	"machine_max_acceleration_extruding": [
-		"10000"
-	],
-	"machine_max_acceleration_retracting": [
-		"1000"
-	],
-	"machine_max_acceleration_x": [
-		"10000"
-	],
-	"machine_max_acceleration_y": [
-		"10000"
-	],
-	"machine_max_acceleration_z": [
-		"500"
-	],
-	"machine_max_speed_e": [
-		"60"
-	],
-	"machine_max_speed_x": [
-		"500"
-	],
-	"machine_max_speed_y": [
-		"500"
-	],
-	"machine_max_speed_z": [
-		"10"
-	],
-	"machine_max_jerk_e": [
-		"5"
-	],
-	"machine_max_jerk_x": [
-		"8"
-	],
-	"machine_max_jerk_y": [
-		"8"
-	],
-	"machine_max_jerk_z": [
-		"0.4"
-	],
-	"machine_min_extruding_rate": [
-		"0"
-	],
-	"machine_min_travel_rate": [
-		"0"
-	],
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"printable_height": "250",
-	"extruder_clearance_radius": "65",
-	"extruder_clearance_height_to_rod": "36",
-	"extruder_clearance_height_to_lid": "140",
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"printer_settings_id": "",
-	"printer_variant": "0.4",
-	"retraction_minimum_travel": [
-		"2"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_length": [
-		"1"
-	],
-	"retract_length_toolchange": [
-		"1"
-	],
-	"z_hop": [
-		"0"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retraction_speed": [
-		"60"
-	],
-	"single_extruder_multi_material": "1",
-	"change_filament_gcode": "",
-	"wipe": [
-		"1"
-	],
-	"default_print_profile": "",
-	"machine_start_gcode": "G0 Z20 F9000\nG92 E0; G1 E-10 F1200\nG28\nM970 Q1 A10 B10 C130 K0\nM970 Q1 A10 B131 C250 K1\nM974 Q1 S1 P0\nM970 Q0 A10 B10 C130 H20 K0\nM970 Q0 A10 B131 C250 K1\nM974 Q0 S1 P0\nM220 S100 ;Reset Feedrate\nM221 S100 ;Reset Flowrate\nG29 ;Home\nG90;\nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position\nM109 S205;\nG1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line\nG1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little\nG1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line\nG92 E0 ;Reset Extruder \nG1 X110 Y110 Z2.0 F3000 ;Move Z Axis up",
-	"machine_end_gcode": "M400 ; wait for buffer to clear\nG92 E0 ; zero the extruder\nG1 E-4.0 F3600; retract \nG91\nG1 Z3;\nM104 S0 ; turn off hotend\nM140 S0 ; turn off bed\nM106 S0 ; turn off fan\nG90 \nG0 X110 Y200 F3600 \nprint_end",
-	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
-	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
-	"machine_pause_gcode": "M601"
-}
@@ -1,23 +0,0 @@
-{
-	"type": "process",
-	"name": "0.20mm Standard @IdeaFormer IR3 V2",
-	"inherits": "fdm_process_common",
-	"from": "system",
-	"setting_id": "91atcIwv5728phqX",
-	"instantiation": "true",
-	"layer_height": "0.2",
-	"initial_layer_print_height": "0.2",
-	"initial_layer_line_width": "0.42",
-	"wall_loops": "2",
-	"reduce_infill_retraction": "1",
-	"detect_overhang_wall": "1",
-	"skirt_loops": "0",
-	"skirt_distance": "0",
-	"sparse_infill_pattern": "grid",
-	"sparse_infill_speed": "200",
-	"support_base_pattern": "rectilinear",
-	"support_interface_pattern": "rectilinear",
-	"compatible_printers": [
-		"IdeaFormer IR3 V2 0.4 nozzle"
-	]
-}
@@ -1,106 +0,0 @@
-{
-	"type": "process",
-	"name": "fdm_process_common",
-	"from": "system",
-	"instantiation": "false",
-	"reduce_crossing_wall": "0",
-	"max_travel_detour_distance": "0",
-	"bottom_surface_pattern": "monotonic",
-	"bottom_shell_thickness": "0",
-	"bridge_speed": "50",
-	"brim_width": "5",
-	"brim_object_gap": "0.1",
-	"compatible_printers": [],
-	"compatible_printers_condition": "",
-	"print_sequence": "by layer",
-	"default_acceleration": "1000",
-	"initial_layer_acceleration": "500",
-	"top_surface_acceleration": "1000",
-	"travel_acceleration": "1000",
-	"inner_wall_acceleration": "1000",
-	"outer_wall_acceleration": "700",
-	"bridge_no_support": "0",
-	"draft_shield": "disabled",
-	"elefant_foot_compensation": "0",
-	"enable_arc_fitting": "0",
-	"wall_infill_order": "inner wall/outer wall/infill",
-	"infill_direction": "45",
-	"sparse_infill_density": "15%",
-	"sparse_infill_pattern": "crosshatch",
-	"initial_layer_print_height": "0.2",
-	"infill_combination": "0",
-	"infill_wall_overlap": "25%",
-	"interface_shells": "0",
-	"ironing_flow": "10%",
-	"ironing_spacing": "0.15",
-	"ironing_speed": "30",
-	"ironing_type": "no ironing",
-	"reduce_infill_retraction": "1",
-	"filename_format": "{input_filename_base}_{layer_height}mm_{filament_type[initial_tool]}_{printer_model}_{print_time}.gcode",
-	"detect_overhang_wall": "1",
-	"slowdown_for_curled_perimeters": "1",
-	"overhang_1_4_speed": "0",
-	"overhang_2_4_speed": "50",
-	"overhang_3_4_speed": "30",
-	"overhang_4_4_speed": "10",
-	"line_width": "110%",
-	"inner_wall_line_width": "110%",
-	"outer_wall_line_width": "100%",
-	"top_surface_line_width": "93.75%",
-	"sparse_infill_line_width": "110%",
-	"initial_layer_line_width": "120%",
-	"internal_solid_infill_line_width": "120%",
-	"support_line_width": "96%",
-	"wall_loops": "3",
-	"print_settings_id": "",
-	"raft_layers": "0",
-	"seam_position": "aligned",
-	"skirt_distance": "2",
-	"skirt_height": "3",
-	"min_skirt_length": "4",
-	"skirt_loops": "0",
-	"minimum_sparse_infill_area": "15",
-	"spiral_mode": "0",
-	"standby_temperature_delta": "-5",
-	"enable_support": "0",
-	"resolution": "0.012",
-	"support_type": "normal(auto)",
-	"support_on_build_plate_only": "0",
-	"support_top_z_distance": "0.2",
-	"support_bottom_z_distance": "0.2",
-	"support_filament": "0",
-	"support_interface_loop_pattern": "0",
-	"support_interface_filament": "0",
-	"support_interface_top_layers": "2",
-	"support_interface_bottom_layers": "2",
-	"support_interface_spacing": "0.5",
-	"support_interface_speed": "80",
-	"support_base_pattern": "default",
-	"support_base_pattern_spacing": "2.5",
-	"support_speed": "150",
-	"support_threshold_angle": "30",
-	"support_object_xy_distance": "0.35",
-	"tree_support_branch_angle": "30",
-	"tree_support_wall_count": "0",
-	"detect_thin_wall": "0",
-	"top_surface_pattern": "monotonicline",
-	"top_shell_thickness": "0.8",
-	"enable_prime_tower": "1",
-	"wipe_tower_no_sparse_layers": "0",
-	"prime_tower_width": "60",
-	"xy_hole_compensation": "0",
-	"xy_contour_compensation": "0",
-	"layer_height": "0.2",
-	"bottom_shell_layers": "3",
-	"top_shell_layers": "4",
-	"bridge_flow": "1",
-	"initial_layer_speed": "45",
-	"initial_layer_infill_speed": "45",
-	"outer_wall_speed": "45",
-	"inner_wall_speed": "80",
-	"sparse_infill_speed": "150",
-	"internal_solid_infill_speed": "150",
-	"top_surface_speed": "50",
-	"gap_infill_speed": "30",
-	"travel_speed": "200"
-}
@@ -1,54 +0,0 @@
-{
-	"name": "Printcepts",
-	"version": "01.00.00.04",
-	"force_update": "0",
-	"description": "Printcepts belt printer configurations",
-	"machine_model_list": [
-		{
-			"name": "BabyBelt Pro",
-			"sub_path": "machine/BabyBelt Pro.json"
-		}
-	],
-	"process_list": [
-		{
-			"name": "fdm_process_common",
-			"sub_path": "process/fdm_process_common.json"
-		},
-		{
-			"name": "0.20mm Standard @BabyBelt Pro",
-			"sub_path": "process/0.20mm Standard @BabyBelt Pro.json"
-		}
-	],
-	"filament_list": [
-		{
-			"name": "Generic PLA @BabyBelt Pro",
-			"sub_path": "filament/Generic PLA @BabyBelt Pro.json"
-		},
-		{
-			"name": "eSUN PLA @BabyBelt Pro",
-			"sub_path": "filament/eSUN PLA @BabyBelt Pro.json"
-		},
-		{
-			"name": "Generic PETG @BabyBelt Pro",
-			"sub_path": "filament/Generic PETG @BabyBelt Pro.json"
-		}
-	],
-	"machine_list": [
-		{
-			"name": "fdm_machine_common",
-			"sub_path": "machine/fdm_machine_common.json"
-		},
-		{
-			"name": "fdm_klipper_common",
-			"sub_path": "machine/fdm_klipper_common.json"
-		},
-		{
-			"name": "fdm_belt_common",
-			"sub_path": "machine/fdm_belt_common.json"
-		},
-		{
-			"name": "BabyBelt Pro 0.4 nozzle",
-			"sub_path": "machine/BabyBelt Pro 0.4 nozzle.json"
-		}
-	]
-}
@@ -1,70 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="95.0mm" height="500.0mm" viewBox="0 0 95.0 500.0" preserveAspectRatio="xMidYMid meet">
-  <!-- Printcepts BabyBelt Pro bed texture: 95 x 500 mm belt plate. -->
-  <!-- Transparent plate; green (#195F30) BabyBelt Pro logo centered along X, near the bottom edge. -->
-  <rect x="0" y="0" width="95.0" height="500.0" fill="none"/>
-  <g transform="translate(14.2500,436.3488) scale(0.067538)">
-    <g transform="translate(-11.000000,692.938562) scale(0.100000,-0.100000)"
-fill="#195F30" stroke="none">
-<path d="M1963 5604 l-1423 -1324 0 -2050 0 -2050 443 0 c244 0 741 3 1105 7
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-186 -15 -189 0 -202 3 -186 45 8 22 348 22 366 0z"/>
-<path d="M7450 1267 c-14 -6 -35 -32 -47 -57 -21 -41 -23 -58 -23 -222 l0
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-</g>
-  </g>
-</svg>
@@ -1,77 +0,0 @@
-{
-	"type": "filament",
-	"name": "Generic PETG @BabyBelt Pro",
-	"inherits": "Generic PETG @System",
-	"from": "system",
-	"setting_id": "gCzHpDNgVwQR6tgk",
-	"instantiation": "true",
-	"filament_extruder_variant": [
-		"Direct Drive Standard"
-	],
-	"compatible_printers": [
-		"BabyBelt Pro 0.4 nozzle"
-	],
-	"filament_type": [
-		"PETG"
-	],
-	"filament_vendor": [
-		"Generic"
-	],
-	"filament_settings_id": [
-		"Generic PETG @BabyBelt Pro"
-	],
-	"filament_flow_ratio": [
-		"0.95"
-	],
-	"filament_cost": [
-		"25"
-	],
-	"nozzle_temperature": [
-		"240"
-	],
-	"nozzle_temperature_initial_layer": [
-		"245"
-	],
-	"cool_plate_temp": [
-		"80"
-	],
-	"cool_plate_temp_initial_layer": [
-		"80"
-	],
-	"fan_min_speed": [
-		"40"
-	],
-	"fan_max_speed": [
-		"60"
-	],
-	"overhang_fan_threshold": [
-		"25%"
-	],
-	"overhang_fan_speed": [
-		"80"
-	],
-	"full_fan_speed_layer": [
-		"8"
-	],
-	"slow_down_min_speed": [
-		"20"
-	],
-	"slow_down_layer_time": [
-		"4"
-	],
-	"fan_cooling_layer_time": [
-		"100"
-	],
-	"filament_retraction_length": [
-		"2"
-	],
-	"filament_retraction_speed": [
-		"40"
-	],
-	"filament_deretraction_speed": [
-		"40"
-	],
-	"filament_start_gcode": [
-		"; Generic PETG @BabyBelt Pro — belt PETG, bed 80C"
-	]
-}
@@ -1,65 +0,0 @@
-{
-	"type": "filament",
-	"name": "Generic PLA @BabyBelt Pro",
-	"inherits": "Generic PLA @System",
-	"from": "system",
-	"setting_id": "24PpcnhVx9v5f4fD",
-	"instantiation": "true",
-	"filament_extruder_variant": [
-		"Direct Drive Standard"
-	],
-	"compatible_printers": [
-		"BabyBelt Pro 0.4 nozzle"
-	],
-	"filament_type": [
-		"PLA"
-	],
-	"filament_vendor": [
-		"Generic"
-	],
-	"filament_settings_id": [
-		"Generic PLA @BabyBelt Pro"
-	],
-	"nozzle_temperature": [
-		"215"
-	],
-	"hot_plate_temp": [
-		"75"
-	],
-	"hot_plate_temp_initial_layer": [
-		"75"
-	],
-	"cool_plate_temp": [
-		"75"
-	],
-	"cool_plate_temp_initial_layer": [
-		"75"
-	],
-	"textured_plate_temp": [
-		"75"
-	],
-	"textured_plate_temp_initial_layer": [
-		"75"
-	],
-	"close_fan_the_first_x_layers": [
-		"3"
-	],
-	"full_fan_speed_layer": [
-		"8"
-	],
-	"slow_down_min_speed": [
-		"20"
-	],
-	"filament_retraction_length": [
-		"1.5"
-	],
-	"filament_retraction_speed": [
-		"35"
-	],
-	"filament_deretraction_speed": [
-		"30"
-	],
-	"filament_start_gcode": [
-		"; Generic PLA @BabyBelt Pro — belt PLA, bed 75C"
-	]
-}
@@ -1,36 +0,0 @@
-{
-	"type": "filament",
-	"name": "eSUN PLA @BabyBelt Pro",
-	"inherits": "Generic PLA @BabyBelt Pro",
-	"from": "system",
-	"setting_id": "EH3X7oE0DU5tSpjW",
-	"filament_id": "OFkrxQC4",
-	"instantiation": "true",
-	"compatible_printers": [
-		"BabyBelt Pro 0.4 nozzle"
-	],
-	"filament_type": [
-		"PLA"
-	],
-	"filament_vendor": [
-		"eSUN"
-	],
-	"filament_settings_id": [
-		"eSUN PLA @BabyBelt Pro"
-	],
-	"nozzle_temperature_initial_layer": [
-		"200"
-	],
-	"nozzle_temperature": [
-		"200"
-	],
-	"enable_pressure_advance": [
-		"1"
-	],
-	"pressure_advance": [
-		"0.12"
-	],
-	"filament_max_volumetric_speed": [
-		"20"
-	]
-}
@@ -1,88 +0,0 @@
-{
-	"type": "machine",
-	"name": "BabyBelt Pro 0.4 nozzle",
-	"inherits": "fdm_belt_common",
-	"from": "system",
-	"setting_id": "34OWINlJpJgA9DwQ",
-	"instantiation": "true",
-	"printer_model": "BabyBelt Pro",
-	"printer_variant": "0.4",
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"default_filament_profile": [
-		"Generic PLA @BabyBelt Pro"
-	],
-	"default_print_profile": "0.20mm Standard @BabyBelt Pro",
-	"printable_area": [
-		"0x0",
-		"95x0",
-		"95x500",
-		"0x500"
-	],
-	"printable_height": "100",
-	"best_object_pos": "0.5,0.05",
-	"nozzle_type": [
-		"hardened_steel"
-	],
-	"printer_extruder_id": [
-		"1"
-	],
-	"printer_extruder_variant": [
-		"Direct Drive Standard"
-	],
-	"thumbnails": [
-		"48x48/PNG",
-		"300x300/PNG"
-	],
-	"machine_max_acceleration_e": [
-		"500",
-		"5000"
-	],
-	"machine_max_acceleration_extruding": [
-		"500",
-		"20000"
-	],
-	"machine_max_acceleration_retracting": [
-		"500",
-		"5000"
-	],
-	"machine_max_acceleration_x": [
-		"500",
-		"20000"
-	],
-	"machine_max_acceleration_y": [
-		"500",
-		"20000"
-	],
-	"machine_max_junction_deviation": [
-		"0.01",
-		"0.01"
-	],
-	"machine_max_speed_x": [
-		"50",
-		"200"
-	],
-	"machine_max_speed_y": [
-		"50",
-		"200"
-	],
-	"machine_max_speed_z": [
-		"5",
-		"12"
-	],
-	"retraction_length": [
-		"1.5"
-	],
-	"retraction_speed": [
-		"20"
-	],
-	"deretraction_speed": [
-		"25"
-	],
-	"retract_lift_enforce": [
-		"Top and Bottom"
-	],
-	"support_chamber_temp_control": "0",
-	"machine_start_gcode": ";Start GCode\nPRINT_START ANGLE=[belt_slice_rotation_angle] EXTRUDER=[nozzle_temperature_initial_layer] BED=[hot_plate_temp_initial_layer] MATERIAL=[filament_type]\n"
-}
@@ -1,12 +0,0 @@
-{
-	"type": "machine_model",
-	"name": "BabyBelt Pro",
-	"model_id": "Printcepts_BabyBelt_Pro",
-	"nozzle_diameter": "0.4",
-	"machine_tech": "FFF",
-	"family": "Printcepts",
-	"bed_model": "",
-	"bed_texture": "BabyBelt Pro_bed_texture.svg",
-	"hotend_model": "",
-	"default_materials": "Generic PLA @BabyBelt Pro;Generic PETG @BabyBelt Pro"
-}
@@ -1,98 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_belt_common",
-	"inherits": "fdm_klipper_common",
-	"from": "system",
-	"instantiation": "false",
-	"gcode_flavor": "klipper",
-	"single_extruder_multi_material": "0",
-	"default_filament_profile": [
-		"Generic PLA @System"
-	],
-	"default_print_profile": "0.20mm Standard @BabyBelt Pro",
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"deretraction_speed": [
-		"30"
-	],
-	"extruder_colour": [
-		"#FCE94F"
-	],
-	"extruder_offset": [
-		"0x0"
-	],
-	"long_retractions_when_cut": [
-		"0"
-	],
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_length_toolchange": [
-		"2"
-	],
-	"retract_lift_above": [
-		"0"
-	],
-	"retract_lift_below": [
-		"0"
-	],
-	"retract_lift_enforce": [
-		"All Surfaces"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_distances_when_cut": [
-		"18"
-	],
-	"retraction_length": [
-		"0.8"
-	],
-	"retraction_minimum_travel": [
-		"1"
-	],
-	"retraction_speed": [
-		"30"
-	],
-	"travel_slope": [
-		"3"
-	],
-	"wipe": [
-		"1"
-	],
-	"wipe_distance": [
-		"1"
-	],
-	"z_hop": [
-		"0"
-	],
-	"z_hop_types": [
-		"Normal Lift"
-	],
-	"gcode_remap_x": "rev_x",
-	"gcode_remap_y": "pos_z",
-	"gcode_remap_z": "pos_y",
-	"printer_extruder_id": [
-		"1"
-	],
-	"belt_printer": "1",
-	"belt_slice_rotation": "x",
-	"belt_slice_rotation_angle": "45",
-	"build_plate_tilt_x": "45",
-	"purge_in_prime_tower": "0",
-	"scan_first_layer": "0",
-	"auxiliary_fan": "0"
-}
@@ -1,140 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_klipper_common",
-	"inherits": "fdm_machine_common",
-	"from": "system",
-	"instantiation": "false",
-	"gcode_flavor": "klipper",
-	"machine_max_acceleration_e": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_extruding": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_retracting": [
-		"5000",
-		"5000"
-	],
-	"machine_max_acceleration_travel": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_x": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_y": [
-		"20000",
-		"20000"
-	],
-	"machine_max_acceleration_z": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_e": [
-		"25",
-		"25"
-	],
-	"machine_max_speed_x": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_y": [
-		"500",
-		"200"
-	],
-	"machine_max_speed_z": [
-		"12",
-		"12"
-	],
-	"machine_max_jerk_e": [
-		"2.5",
-		"2.5"
-	],
-	"machine_max_jerk_x": [
-		"9",
-		"9"
-	],
-	"machine_max_jerk_y": [
-		"9",
-		"9"
-	],
-	"machine_max_jerk_z": [
-		"0.2",
-		"0.4"
-	],
-	"machine_min_extruding_rate": [
-		"0",
-		"0"
-	],
-	"machine_min_travel_rate": [
-		"0",
-		"0"
-	],
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"printable_height": "250",
-	"extruder_clearance_radius": "65",
-	"extruder_clearance_height_to_rod": "36",
-	"extruder_clearance_height_to_lid": "140",
-	"printer_settings_id": "",
-	"printer_technology": "FFF",
-	"printer_variant": "0.4",
-	"retraction_minimum_travel": [
-		"1"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_length": [
-		"0.8"
-	],
-	"retract_length_toolchange": [
-		"2"
-	],
-	"z_hop": [
-		"0.4"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retraction_speed": [
-		"30"
-	],
-	"deretraction_speed": [
-		"30"
-	],
-	"z_hop_types": "Normal Lift",
-	"single_extruder_multi_material": "1",
-	"change_filament_gcode": "",
-	"wipe": [
-		"1"
-	],
-	"default_filament_profile": [
-		"Generic PLA @System"
-	],
-	"default_print_profile": "0.20mm Standard @MyKlipper",
-	"bed_exclude_area": [
-		"0x0"
-	],
-	"machine_start_gcode": "M190 S[bed_temperature_initial_layer_single]\nM109 S[nozzle_temperature_initial_layer]\nPRINT_START EXTRUDER=[nozzle_temperature_initial_layer] BED=[bed_temperature_initial_layer_single]\n",
-	"machine_end_gcode": "PRINT_END",
-	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
-	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
-	"machine_pause_gcode": "PAUSE",
-	"scan_first_layer": "0",
-	"nozzle_type": "undefine",
-	"auxiliary_fan": "0"
-}
@@ -1,118 +0,0 @@
-{
-	"type": "machine",
-	"name": "fdm_machine_common",
-	"from": "system",
-	"instantiation": "false",
-	"printer_technology": "FFF",
-	"deretraction_speed": [
-		"40"
-	],
-	"extruder_colour": [
-		"#FCE94F"
-	],
-	"extruder_offset": [
-		"0x0"
-	],
-	"gcode_flavor": "marlin",
-	"machine_max_acceleration_e": [
-		"5000"
-	],
-	"machine_max_acceleration_extruding": [
-		"10000"
-	],
-	"machine_max_acceleration_retracting": [
-		"1000"
-	],
-	"machine_max_acceleration_x": [
-		"10000"
-	],
-	"machine_max_acceleration_y": [
-		"10000"
-	],
-	"machine_max_acceleration_z": [
-		"500"
-	],
-	"machine_max_speed_e": [
-		"60"
-	],
-	"machine_max_speed_x": [
-		"500"
-	],
-	"machine_max_speed_y": [
-		"500"
-	],
-	"machine_max_speed_z": [
-		"10"
-	],
-	"machine_max_jerk_e": [
-		"5"
-	],
-	"machine_max_jerk_x": [
-		"8"
-	],
-	"machine_max_jerk_y": [
-		"8"
-	],
-	"machine_max_jerk_z": [
-		"0.4"
-	],
-	"machine_min_extruding_rate": [
-		"0"
-	],
-	"machine_min_travel_rate": [
-		"0"
-	],
-	"max_layer_height": [
-		"0.32"
-	],
-	"min_layer_height": [
-		"0.08"
-	],
-	"printable_height": "250",
-	"extruder_clearance_radius": "65",
-	"extruder_clearance_height_to_rod": "36",
-	"extruder_clearance_height_to_lid": "140",
-	"nozzle_diameter": [
-		"0.4"
-	],
-	"printer_settings_id": "",
-	"printer_variant": "0.4",
-	"retraction_minimum_travel": [
-		"2"
-	],
-	"retract_before_wipe": [
-		"70%"
-	],
-	"retract_when_changing_layer": [
-		"1"
-	],
-	"retraction_length": [
-		"1"
-	],
-	"retract_length_toolchange": [
-		"1"
-	],
-	"z_hop": [
-		"0"
-	],
-	"retract_restart_extra": [
-		"0"
-	],
-	"retract_restart_extra_toolchange": [
-		"0"
-	],
-	"retraction_speed": [
-		"60"
-	],
-	"single_extruder_multi_material": "1",
-	"change_filament_gcode": "",
-	"wipe": [
-		"1"
-	],
-	"default_print_profile": "",
-	"machine_start_gcode": "G0 Z20 F9000\nG92 E0; G1 E-10 F1200\nG28\nM970 Q1 A10 B10 C130 K0\nM970 Q1 A10 B131 C250 K1\nM974 Q1 S1 P0\nM970 Q0 A10 B10 C130 H20 K0\nM970 Q0 A10 B131 C250 K1\nM974 Q0 S1 P0\nM220 S100 ;Reset Feedrate\nM221 S100 ;Reset Flowrate\nG29 ;Home\nG90;\nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position\nM109 S205;\nG1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line\nG1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little\nG1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line\nG92 E0 ;Reset Extruder \nG1 X110 Y110 Z2.0 F3000 ;Move Z Axis up",
-	"machine_end_gcode": "M400 ; wait for buffer to clear\nG92 E0 ; zero the extruder\nG1 E-4.0 F3600; retract \nG91\nG1 Z3;\nM104 S0 ; turn off hotend\nM140 S0 ; turn off bed\nM106 S0 ; turn off fan\nG90 \nG0 X110 Y200 F3600 \nprint_end",
-	"layer_change_gcode": ";AFTER_LAYER_CHANGE\n;[layer_z]",
-	"before_layer_change_gcode": ";BEFORE_LAYER_CHANGE\n;[layer_z]\nG92 E0\n",
-	"machine_pause_gcode": "M601"
-}
@@ -1,23 +0,0 @@
-{
-	"type": "process",
-	"name": "0.20mm Standard @BabyBelt Pro",
-	"inherits": "fdm_process_common",
-	"from": "system",
-	"setting_id": "JGfGtqX6CWjCt437",
-	"instantiation": "true",
-	"layer_height": "0.2",
-	"initial_layer_print_height": "0.2",
-	"initial_layer_line_width": "0.42",
-	"wall_loops": "2",
-	"reduce_infill_retraction": "1",
-	"detect_overhang_wall": "1",
-	"skirt_loops": "0",
-	"skirt_distance": "0",
-	"sparse_infill_pattern": "grid",
-	"sparse_infill_speed": "200",
-	"support_base_pattern": "rectilinear",
-	"support_interface_pattern": "rectilinear",
-	"compatible_printers": [
-		"BabyBelt Pro 0.4 nozzle"
-	]
-}
@@ -1,106 +0,0 @@
-{
-	"type": "process",
-	"name": "fdm_process_common",
-	"from": "system",
-	"instantiation": "false",
-	"reduce_crossing_wall": "0",
-	"max_travel_detour_distance": "0",
-	"bottom_surface_pattern": "monotonic",
-	"bottom_shell_thickness": "0",
-	"bridge_speed": "50",
-	"brim_width": "5",
-	"brim_object_gap": "0.1",
-	"compatible_printers": [],
-	"compatible_printers_condition": "",
-	"print_sequence": "by layer",
-	"default_acceleration": "1000",
-	"initial_layer_acceleration": "500",
-	"top_surface_acceleration": "1000",
-	"travel_acceleration": "1000",
-	"inner_wall_acceleration": "1000",
-	"outer_wall_acceleration": "700",
-	"bridge_no_support": "0",
-	"draft_shield": "disabled",
-	"elefant_foot_compensation": "0",
-	"enable_arc_fitting": "0",
-	"wall_infill_order": "inner wall/outer wall/infill",
-	"infill_direction": "45",
-	"sparse_infill_density": "15%",
-	"sparse_infill_pattern": "crosshatch",
-	"initial_layer_print_height": "0.2",
-	"infill_combination": "0",
-	"infill_wall_overlap": "25%",
-	"interface_shells": "0",
-	"ironing_flow": "10%",
-	"ironing_spacing": "0.15",
-	"ironing_speed": "30",
-	"ironing_type": "no ironing",
-	"reduce_infill_retraction": "1",
-	"filename_format": "{input_filename_base}_{layer_height}mm_{filament_type[initial_tool]}_{printer_model}_{print_time}.gcode",
-	"detect_overhang_wall": "1",
-	"slowdown_for_curled_perimeters": "1",
-	"overhang_1_4_speed": "0",
-	"overhang_2_4_speed": "50",
-	"overhang_3_4_speed": "30",
-	"overhang_4_4_speed": "10",
-	"line_width": "110%",
-	"inner_wall_line_width": "110%",
-	"outer_wall_line_width": "100%",
-	"top_surface_line_width": "93.75%",
-	"sparse_infill_line_width": "110%",
-	"initial_layer_line_width": "120%",
-	"internal_solid_infill_line_width": "120%",
-	"support_line_width": "96%",
-	"wall_loops": "3",
-	"print_settings_id": "",
-	"raft_layers": "0",
-	"seam_position": "aligned",
-	"skirt_distance": "2",
-	"skirt_height": "3",
-	"min_skirt_length": "4",
-	"skirt_loops": "0",
-	"minimum_sparse_infill_area": "15",
-	"spiral_mode": "0",
-	"standby_temperature_delta": "-5",
-	"enable_support": "0",
-	"resolution": "0.012",
-	"support_type": "normal(auto)",
-	"support_on_build_plate_only": "0",
-	"support_top_z_distance": "0.2",
-	"support_bottom_z_distance": "0.2",
-	"support_filament": "0",
-	"support_interface_loop_pattern": "0",
-	"support_interface_filament": "0",
-	"support_interface_top_layers": "2",
-	"support_interface_bottom_layers": "2",
-	"support_interface_spacing": "0.5",
-	"support_interface_speed": "80",
-	"support_base_pattern": "default",
-	"support_base_pattern_spacing": "2.5",
-	"support_speed": "150",
-	"support_threshold_angle": "30",
-	"support_object_xy_distance": "0.35",
-	"tree_support_branch_angle": "30",
-	"tree_support_wall_count": "0",
-	"detect_thin_wall": "0",
-	"top_surface_pattern": "monotonicline",
-	"top_shell_thickness": "0.8",
-	"enable_prime_tower": "1",
-	"wipe_tower_no_sparse_layers": "0",
-	"prime_tower_width": "60",
-	"xy_hole_compensation": "0",
-	"xy_contour_compensation": "0",
-	"layer_height": "0.2",
-	"bottom_shell_layers": "3",
-	"top_shell_layers": "4",
-	"bridge_flow": "1",
-	"initial_layer_speed": "45",
-	"initial_layer_infill_speed": "45",
-	"outer_wall_speed": "45",
-	"inner_wall_speed": "80",
-	"sparse_infill_speed": "150",
-	"internal_solid_infill_speed": "150",
-	"top_surface_speed": "50",
-	"gap_infill_speed": "30",
-	"travel_speed": "200"
-}
@@ -26,7 +26,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform vec4 uniform_color;
@@ -23,7 +23,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform mat4 view_model_matrix;
@@ -78,8 +77,8 @@ void main()
    // Point in homogenous coordinates.
    world_pos = volume_world_matrix * vec4(v_position, 1.0);

-    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
+    // z component of normal vector in world coordinate used for slope shading
+    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;

    gl_Position = projection_matrix * position;
    if (is_outline) {
@@ -37,7 +37,6 @@ struct SlopeDetection
    bool actived;
 	 float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };
 uniform SlopeDetection slope;

@@ -86,7 +85,7 @@ void main()
              color = LightBlue;
              alpha = 1.0;
         }
-         else if( dot(transformed_normal, slope.up_direction) < slope.normal_z - EPSILON)
+         else if( transformed_normal.z < slope.normal_z - EPSILON)
        {
            color = color * 0.5 + LightRed * 0.5;
            alpha = 1.0;
@@ -24,7 +24,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 void main()
@@ -41,7 +41,6 @@ struct SlopeDetection
    bool actived;
    float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform vec4 uniform_color;
@@ -7,7 +7,6 @@ struct SlopeDetection
    bool actived;
    float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform mat4 view_model_matrix;
@@ -47,8 +46,8 @@ void main()
    // Point in homogenous coordinates.
    world_pos = volume_world_matrix * vec4(v_position, 1.0);

-    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
+    // z component of normal vector in world coordinate used for slope shading
+    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;

    gl_Position = projection_matrix * position;
    if (is_outline) {
@@ -29,7 +29,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform vec4 uniform_color;
@@ -23,7 +23,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform mat4 view_model_matrix;
@@ -78,8 +77,8 @@ void main()
    // Point in homogenous coordinates.
    world_pos = volume_world_matrix * vec4(v_position, 1.0);

-    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
+    // z component of normal vector in world coordinate used for slope shading
+    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;

    gl_Position = projection_matrix * position;
    if (is_outline) {
@@ -37,7 +37,6 @@ struct SlopeDetection
    bool actived;
 	 float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };
 uniform SlopeDetection slope;

@@ -88,7 +87,7 @@ void main()
              color = LightBlue;
              alpha = 1.0;
         }
-         else if( dot(transformed_normal, slope.up_direction) < slope.normal_z - EPSILON)
+         else if( transformed_normal.z < slope.normal_z - EPSILON)
        {
            color = color * 0.5 + LightRed * 0.5;
            alpha = 1.0;
@@ -24,7 +24,6 @@ struct SlopeDetection
    bool actived;
 	float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };
 uniform SlopeDetection slope;
 void main()
@@ -44,7 +44,6 @@ struct SlopeDetection
    bool actived;
    float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform vec4 uniform_color;
@@ -7,7 +7,6 @@ struct SlopeDetection
    bool actived;
    float normal_z;
    mat3 volume_world_normal_matrix;
-    vec3 up_direction;
 };

 uniform mat4 view_model_matrix;
@@ -47,8 +46,8 @@ void main()
    // Point in homogenous coordinates.
    world_pos = volume_world_matrix * vec4(v_position, 1.0);

-    // dot product of world normal with up direction, used for slope shading
-    world_normal_z = slope.actived ? dot(normalize(slope.volume_world_normal_matrix * v_normal), slope.up_direction) : 0.0;
+    // z component of normal vector in world coordinate used for slope shading
+    world_normal_z = slope.actived ? (normalize(slope.volume_world_normal_matrix * v_normal)).z : 0.0;

    gl_Position = projection_matrix * position;
    if (is_outline) {
@@ -311,7 +311,7 @@ function CreatePrinterBlock(OneModel)

 	return	'<div class="PrinterBlock" onClick="ChooseModel(\''+vendor+'\',\''+OneModel['model']+'\')">'+
 			'	<div class="PImg">'+
-			'		<img class="ModelThumbnail" src="' + OneModel['cover'] + '" />'+
+			'		<img class="ModelThumbnail" src="' + OneModel['cover'] + '" onerror="this.onerror=null;this.src=\'../img/printer-dummy.png\';"/>'+
 			'	</div>'+
 			'	<div class="PrinterInfoMark">?</div>'+
 			'	<div class="PrinterInfo">'+
@@ -311,11 +311,12 @@ def main():
        for path in fixed:
            print(f"    {path}")
    if failed and fixed:
-        print(f"\nclang-tidy still fails on {len(failed)} file(s); the findings above are what --fix could not add.")
+        print(f"\nclang-tidy still fails on {len(failed)} file(s); the findings above are what --fix could not fix.")
        return 1
    if failed:
        print(f"\nclang-tidy failed on {len(failed)} file(s). Add the includes it names, or apply its "
-              "suggestions locally with scripts/run_clang_tidy.sh --fix (scripts\\run_clang_tidy.ps1 -Fix on Windows).")
+              "suggestions locally with scripts/run_clang_tidy.sh --fix (scripts\\run_clang_tidy.ps1 -Fix on Windows). "
+              "Other findings need a manual fix.")
        return 1
    print("clang-tidy passed.")
    return 0
@@ -4,5 +4,10 @@
 <dict>
    <key>com.apple.security.cs.disable-library-validation</key>
    <true/>
+    <!-- The Bambu network plug-in's code protector rewrites one of its own signed code pages
+         after loading. Under the hardened runtime macOS kills the process when that page is
+         paged back in; this lets it run, as Bambu Studio's signature does. -->
+    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
+    <true/>
 </dict>
 </plist>
@@ -167,11 +167,6 @@ OBSOLETE_KEYS = {
    "filament_load_time", "filament_unload_time", "smooth_coefficient",
    "overhang_totally_speed", "silent_mode", "overhang_speed_classic",
    "anisotropic_surfaces",
-    # Belt printer options retired before the feature shipped (#16236).
-    "belt_slice_rotation_global", "preslice_remap_x", "preslice_remap_y", "preslice_remap_z",
-    "preslice_remap_global", "belt_support_z_offset_mode", "first_layer_plane",
-    "first_layer_plane_offset", "belt_preslice_global", "gcode_back_transform",
-    "belt_support_floor_mode", "first_layer_plane_thickness",
 }

 # Keys renamed at some point, whose old and new spellings must never co-exist:
@@ -91,12 +91,6 @@ if (SLIC3R_GUI)
 #    list(REMOVE_ITEM wxWidgets_LIBRARIES oleacc)

    find_package(wxInspector REQUIRED)
-    # wxInspector 1.0.0 installs its headers but accidentally declares the
-    # INSTALL_INTERFACE include directory PRIVATE, so its imported target does
-    # not expose them to consumers. Restore the package prefix include path until
-    # the upstream export is fixed.
-    get_filename_component(WXINSPECTOR_PREFIX "${wxInspector_DIR}/../../.." ABSOLUTE)
-    target_include_directories(wxInspector::wxInspector INTERFACE "${WXINSPECTOR_PREFIX}/include")

    # wxInspector's exported interface names the release wxWidgets import
    # libraries, which a Debug build cannot link. wx is linked above instead.
@@ -192,7 +186,7 @@ endif ()
 # Add the Slic3r GUI library, libcurl, OpenGL and GLU libraries.
 if (SLIC3R_GUI)
 #    target_link_libraries(OrcaSlicer ws2_32 uxtheme setupapi libslic3r_gui ${wxWidgets_LIBRARIES})
-target_link_libraries(OrcaSlicer libslic3r_gui wxInspector::wxInspector)
+target_link_libraries(OrcaSlicer libslic3r_gui)
    if (MSVC)
        # Generate debug symbols even in release mode.
        target_link_options(OrcaSlicer PUBLIC "$<$<CONFIG:RELEASE>:/DEBUG>")
@@ -23,7 +23,6 @@
 #include <map>
 #include <vector>
 #include "libslic3r/PrintBase.hpp"
-#include "slic3r/Utils/json_diff.hpp"
 #include <boost/date_time/posix_time/posix_time_duration.hpp>
 #include <cerrno>
 #include <utility>
@@ -78,12 +77,10 @@
 #include <condition_variable>
 #include <mutex>
 #include <boost/thread.hpp>
-//add json logic
-#include "nlohmann/json.hpp"
-
-using namespace nlohmann;
 #endif

+#include "nlohmann/json.hpp"
+
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/nowide/args.hpp>
@@ -157,6 +154,7 @@ using namespace nlohmann;
 #include <stdio.h>

 namespace fs = boost::filesystem;
+using json = nlohmann::json;

 #ifdef __WXGTK__
 #if __has_include(<X11/Xlib.h>)
@@ -3434,14 +3432,9 @@ int CLI::run(int argc, char **argv)
                max_self_index = std::max(max_self_index, v);
                min_self_index = std::min(min_self_index, v);
            }
-            // And a project saved with FEWER filaments than are now loaded (a
-            // one-filament project sliced with two --load-filaments) leaves the tables half filled:
-            // the variant matching below then reads past filament_extruder_variant and
-            // set_with_restore_2 throws an uncaught size error. Regenerate in that case too.
-            if (max_self_index > filament_count || min_self_index < 1 || max_self_index < filament_count
-                || (int) filament_self_index_opt->values.size() < filament_count) {
-                BOOST_LOG_TRIVIAL(warning) << boost::format("filament_self_index range [%1%, %2%] (size %4%) is invalid for filament_count %3%, regenerating")
-                        % min_self_index % max_self_index % filament_count % filament_self_index_opt->values.size();
+            if (max_self_index > filament_count || min_self_index < 1) {
+                BOOST_LOG_TRIVIAL(warning) << boost::format("filament_self_index range [%1%, %2%] is invalid for filament_count %3%, regenerating")
+                        % min_self_index % max_self_index % filament_count;
                need_regenerate_self_index = true;
            }
        }
@@ -3529,13 +3522,9 @@ int CLI::run(int argc, char **argv)
            ConfigOptionStrings *curr_variant_opt = m_print_config.option<ConfigOptionStrings>("filament_extruder_variant");
            if (!curr_variant_opt) {
                curr_variant_opt = m_print_config.option<ConfigOptionStrings>("filament_extruder_variant", true);
-                std::vector<string>& filament_variants = curr_variant_opt->values;
+                std::vector<std::string>& filament_variants = curr_variant_opt->values;
                filament_variants.resize(filament_count, get_extruder_variant_string(etDirectDrive, nvtStandard));
            }
-            // See the filament_self_index note above: one variant per filament for
-            // the filaments the project did not know about.
-            if ((int) curr_variant_opt->values.size() < filament_count)
-                curr_variant_opt->values.resize(filament_count, get_extruder_variant_string(etDirectDrive, nvtStandard));
            const ConfigOptionStrings *new_variant_opt = dynamic_cast<const ConfigOptionStrings*>(config.option("filament_extruder_variant", true));

            std::vector<int> new_variant_indice;
@@ -3544,7 +3533,7 @@ int CLI::run(int argc, char **argv)

            for (int i = 0; i < new_variant_count; i++)
            {
-                for (int j = old_start_indice[filament_index - 1]; j < old_start_indice[filament_index - 1] + old_variant_count && j < (int) curr_variant_opt->values.size(); j++)
+                for (int j = old_start_indice[filament_index - 1]; j < old_start_indice[filament_index - 1] + old_variant_count; j++)
                {
                    if (curr_variant_opt->values[j] == new_variant_opt->values[i]) {
                        new_variant_indice[i] = j;
@@ -3596,18 +3585,7 @@ int CLI::run(int argc, char **argv)
                                ConfigOptionVectorBase* opt_vec_dst = static_cast<ConfigOptionVectorBase*>(opt);
                                const ConfigOptionVectorBase* opt_vec_src = static_cast<const ConfigOptionVectorBase*>(source_opt);
                                //set with index
-                                try {
-                                    // A project with fewer filaments than are loaded: grow the
-                                    // destination to the filament's slot first (set_with_restore_2 only restores).
-                                    if (opt_vec_src->size() > 0 && opt_vec_dst->size() < size_t(old_start_indice[filament_index - 1] + old_variant_count))
-                                        opt_vec_dst->resize(size_t(old_start_indice[filament_index - 1] + old_variant_count), opt_vec_src);
-                                    opt_vec_dst->set_with_restore_2(opt_vec_src, new_variant_indice, old_start_indice[filament_index - 1], old_variant_count);
-                                } catch (const std::exception &ex) {   // Was an uncaught abort
-                                    BOOST_LOG_TRIVIAL(error) << boost::format("filament %1%: option %2% could not be applied: %3%") % filament_index % opt_key % ex.what();
-                                    boost::nowide::cerr << "filament " << filament_index << ": option " << opt_key << " could not be applied: " << ex.what() << std::endl;
-                                    record_exit_reson(outfile_dir, CLI_CONFIG_FILE_ERROR, 0, cli_errors[CLI_CONFIG_FILE_ERROR], sliced_info);
-                                    flush_and_exit(CLI_CONFIG_FILE_ERROR);
-                                }
+                                opt_vec_dst->set_with_restore_2(opt_vec_src, new_variant_indice, old_start_indice[filament_index - 1], old_variant_count);
                            }

                            continue;
@@ -3640,6 +3618,9 @@ int CLI::run(int argc, char **argv)
                {
                    if (opt_key == "compatible_prints" || opt_key == "compatible_printers" || opt_key == "model_id" || opt_key == "dev_model_name" || opt_key == "filament_settings_id")
                        continue;
+                    // rebuilt from every filament after this loop
+                    if (filament_dev_options.find(opt_key) != filament_dev_options.end())
+                        continue;
                    ConfigOption *opt = m_print_config.option(opt_key, true);
                    if (opt == nullptr) {
                        // opt_key does not exist in this ConfigBase and it cannot be created, because it is not defined by this->def().
@@ -3653,16 +3634,7 @@ int CLI::run(int argc, char **argv)
                    if (filament_options_with_variant.find(opt_key) != filament_options_with_variant.end()) {
                        std::vector<int> temp_variant_indice;
                        temp_variant_indice.resize(new_variant_count, -1);
-                        try {
-                            if (opt_vec_src->size() > 0 && opt_vec_dst->size() < size_t(old_start_indice[filament_index - 1] + old_variant_count))   // See above
-                                opt_vec_dst->resize(size_t(old_start_indice[filament_index - 1] + old_variant_count), opt_vec_src);
-                            opt_vec_dst->set_with_restore_2(opt_vec_src, temp_variant_indice, old_start_indice[filament_index - 1], old_variant_count, true);
-                        } catch (const std::exception &ex) {   // Was an uncaught abort
-                            BOOST_LOG_TRIVIAL(error) << boost::format("filament %1%: option %2% could not be applied: %3%") % filament_index % opt_key % ex.what();
-                            boost::nowide::cerr << "filament " << filament_index << ": option " << opt_key << " could not be applied: " << ex.what() << std::endl;
-                            record_exit_reson(outfile_dir, CLI_CONFIG_FILE_ERROR, 0, cli_errors[CLI_CONFIG_FILE_ERROR], sliced_info);
-                            flush_and_exit(CLI_CONFIG_FILE_ERROR);
-                        }
+                        opt_vec_dst->set_with_restore_2(opt_vec_src, temp_variant_indice, old_start_indice[filament_index - 1], old_variant_count, true);

                        if (opt_key == "filament_extruder_variant")
                            new_variant_counts[filament_index - 1] = opt_vec_src->size();
@@ -3712,6 +3684,14 @@ int CLI::run(int argc, char **argv)
            }
        }

+        // The stored values cannot be told apart per filament, so they are kept as they are unless every slot has a config.
+        std::vector<const DynamicPrintConfig *> filament_configs(filament_count, nullptr);
+        for (size_t index = 0; index < load_filaments_config.size(); index++)
+            if (load_filaments_index[index] >= 1 && load_filaments_index[index] <= filament_count)
+                filament_configs[load_filaments_index[index] - 1] = &load_filaments_config[index];
+        if (std::find(filament_configs.begin(), filament_configs.end(), nullptr) == filament_configs.end())
+            set_filament_dev_options(m_print_config, filament_configs);
+
        if (m_print_config.option<ConfigOptionStrings>("filament_extruder_variant")) {
            std::vector<int>& filament_self_indice = m_print_config.option<ConfigOptionInts>("filament_self_index", true)->values;
            int index_size = m_print_config.option<ConfigOptionStrings>("filament_extruder_variant")->size();
@@ -4168,10 +4148,6 @@ int CLI::run(int argc, char **argv)
        BOOST_LOG_TRIVIAL(info) << boost::format("%1%, set disable_wipe_tower_after_mapping back to false due to wrapping detect")%__LINE__;
    }

-    // Belt printers never get the classic wipe tower (see Print::has_wipe_tower()), so reserve no space for it.
-    const ConfigOptionBool* belt_printer_opt = m_print_config.option<ConfigOptionBool>("belt_printer");
-    const bool is_belt_printer = belt_printer_opt && belt_printer_opt->value;
-
    auto timelapse_type_opt = m_print_config.option("timelapse_type");
    bool is_smooth_timelapse = false;
    if (enable_timelapse && timelapse_type_opt && (timelapse_type_opt->getInt() == TimelapseType::tlSmooth))
@@ -4409,11 +4385,11 @@ int CLI::run(int argc, char **argv)
        }
    };

-    auto check_plate_wipe_tower = [get_print_sequence, is_smooth_timelapse, is_belt_printer](Slic3r::GUI::PartPlate* plate, int plate_index, DynamicPrintConfig& print_config, plate_obj_size_info_t &plate_obj_size_info) {
+    auto check_plate_wipe_tower = [get_print_sequence, is_smooth_timelapse](Slic3r::GUI::PartPlate* plate, int plate_index, DynamicPrintConfig& print_config, plate_obj_size_info_t &plate_obj_size_info) {
        plate_obj_size_info.obj_bbox= plate->get_objects_bounding_box();
        BOOST_LOG_TRIVIAL(info) << boost::format("plate %1%, object bbox: min {%2%, %3%, %4%} - max {%5%, %6%, %7%}")
                    %(plate_index+1) %plate_obj_size_info.obj_bbox.min.x() % plate_obj_size_info.obj_bbox.min.y() % plate_obj_size_info.obj_bbox.min.z() %plate_obj_size_info.obj_bbox.max.x() % plate_obj_size_info.obj_bbox.max.y() % plate_obj_size_info.obj_bbox.max.z();
-        if (is_belt_printer || !print_config.has("wipe_tower_x")) {
+        if (!print_config.has("wipe_tower_x")) {
            plate_obj_size_info.has_wipe_tower = false;
            BOOST_LOG_TRIVIAL(info) << boost::format("can not found wipe_tower_x in config, set to no wipe tower");
            return;
@@ -5283,7 +5259,7 @@ int CLI::run(int argc, char **argv)
                    }
                }

-                if (!is_belt_printer && ((!arrange_cfg.is_seq_print && (assemble_plate.filaments_count > 1)) || (enable_wrapping_detect && !current_wrapping_exclude_area.empty())))
+                if ((!arrange_cfg.is_seq_print && (assemble_plate.filaments_count > 1))||(enable_wrapping_detect && !current_wrapping_exclude_area.empty()))
                {
                    //prepare the wipe tower
                    int plate_count = partplate_list.get_plate_count();
@@ -5435,7 +5411,7 @@ int CLI::run(int argc, char **argv)
                bool is_seq_print = false;
                get_print_sequence(cur_plate, m_print_config, is_seq_print);

-                if (!is_belt_printer && !is_seq_print && (assemble_plate.filaments_count > 1) && !has_wipe_tower_position)
+                if (!is_seq_print && (assemble_plate.filaments_count > 1) && !has_wipe_tower_position)
                {
                    //prepare the wipe tower
                    auto printer_structure_opt = m_print_config.option<ConfigOptionEnum<PrinterStructure>>("printer_structure");
@@ -5603,7 +5579,7 @@ int CLI::run(int argc, char **argv)
                    };
                    const int max_filament_count = plate_count > 0 ? *std::max_element(plate_filament_counts.begin(), plate_filament_counts.end()) : 0;

-                    if (!is_belt_printer && plate_needs_wipe_tower(max_filament_count))
+                    if (plate_needs_wipe_tower(max_filament_count))
                    {
                        //prepare the wipe tower
                        auto printer_structure_opt = m_print_config.option<ConfigOptionEnum<PrinterStructure>>("printer_structure");
@@ -5710,7 +5686,7 @@ int CLI::run(int argc, char **argv)
                        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(": found single object mode");
                    }

-                    if (!is_belt_printer && m_print_config.has("wipe_tower_x") && (is_smooth_timelapse || !arrange_cfg.is_seq_print || (selected.size() <= 1))) {
+                    if (m_print_config.has("wipe_tower_x") && (is_smooth_timelapse || !arrange_cfg.is_seq_print || (selected.size() <= 1))) {
                        float x;
                        float y;
                        if (duplicate_count > 0) {
@@ -6335,7 +6311,7 @@ int CLI::run(int argc, char **argv)
                // The stored (or default) tower position may not fit the tower these plates
                // need, and no CLI placement site runs on a plain slice - mirror the GUI's
                // reload clamp and fit every plate's tower into the printable area first.
-                if (!is_belt_printer && m_print_config.option<ConfigOptionBool>("enable_prime_tower", true)->value) {
+                if (m_print_config.option<ConfigOptionBool>("enable_prime_tower", true)->value) {
                    for (int index = 0; index < partplate_list.get_plate_count(); index++) {
                        if ((plate_to_slice != 0) && (plate_to_slice != (index + 1)))
                            continue;
@@ -6587,7 +6563,7 @@ int CLI::run(int argc, char **argv)
                                                std::vector<int> result_filaments;
                                                //result_filaments.reserve(conflict_filaments.size());
                                                std::set_intersection(conflict_filament_vector.begin(), conflict_filament_vector.end(), unprintable_filament_vec[index].begin(),
-                                                    unprintable_filament_vec[index].end(), insert_iterator<vector<int>>(result_filaments, result_filaments.begin()));
+                                                    unprintable_filament_vec[index].end(), std::insert_iterator<std::vector<int>>(result_filaments, result_filaments.begin()));
                                                conflict_filament_vector = result_filaments;
                                            }
                                        }
@@ -521,16 +521,11 @@ int slice_all_printers(const std::string &vendor, const std::string &outdir)
        const std::string filament_name = bundle.filaments.get_selected_preset_name();
        const std::string what          = "Printer \"" + printer + "\"";
        const std::string file_base     = sanitize_filename(vendor_name) + "__" + sanitize_filename(printer);
-        // A belt printer has no wipe tower (it purges into a prism object on the belt), so its
-        // filament change is the plain tool change set_extruder() emits rather than the tower's block.
-        const bool        belt   = bundle.printers.get_selected_preset().config.opt_bool("belt_printer");
-        const std::string marker = belt ? "\nT1\n" : "CP TOOLCHANGE START";
        if (const std::string out = slice_selection(bundle, what, false, outdir, file_base); out.empty())
            ++failures;
-        else if (out.find(marker) == std::string::npos) {
-            // The filament change never fired, so change_filament_gcode was not exercised.
-            BOOST_LOG_TRIVIAL(error) << what << " sliced but the filament change never fired (no "
-                                     << (belt ? "T1" : "CP TOOLCHANGE START") << ")";
+        else if (out.find("CP TOOLCHANGE START") == std::string::npos) {
+            // The filament change never rode the tower, so change_filament_gcode was not exercised.
+            BOOST_LOG_TRIVIAL(error) << what << " sliced but the filament change never fired (no CP TOOLCHANGE START)";
            ++failures;
        }
        cover(bundle.prints.get_selected_preset());
@@ -5,5 +5,10 @@
  <!-- for dynamic loading of libraries without signature validation. Used for 3dconnection drivers.-->
  <key>com.apple.security.cs.disable-library-validation</key>  
  <true/>
+  <!-- The Bambu network plug-in's code protector rewrites one of its own signed code pages
+       after loading. Under the hardened runtime macOS kills the process when that page is
+       paged back in; this lets it run, as Bambu Studio's signature does. -->
+  <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
+  <true/>
 </dict>
 </plist>
@@ -15,8 +15,6 @@
 #include "libslic3r/Semver.hpp"
 #include "calib.hpp"

-using namespace nlohmann;
-
 #define ENV_DEV_HOST		"0"
 #define ENV_QAT_HOST		"1"
 #define ENV_PRE_HOST		"2"
@@ -466,8 +466,6 @@ void SkeletalTrapezoidation::constructFromPolygons(const Polygons& polys)
            edge.from->incident_edge = &edge;
 }

-using NodeSet = SkeletalTrapezoidation::NodeSet;
-
 void SkeletalTrapezoidation::separatePointyQuadEndNodes()
 {
    NodeSet visited_nodes;
@@ -93,7 +93,6 @@ using namespace libnest2d;
 using Item         = _Item<ExPolygon>;
 using Box          = _Box<Point>;
 using Circle       = _Circle<Point>;
-using Segment      = _Segment<Point>;
 using MultiPolygon = ExPolygons;

 // Summon the spatial indexing facilities from boost
@@ -300,15 +299,7 @@ Points get_shrink_bedpts(const DynamicPrintConfig* print_cfg, const ArrangeParam
 template<class PConf>
 void fill_config(PConf& pcfg, const ArrangeParams &params) {

-        if (params.is_belt) {
-            // Pack from the end of the belt that prints first, and keep the pile on the
-            // bed when it is larger than the room around that end.
-            pcfg.starting_point = !params.belt_reversed    ? PConf::Alignment::BOTTOM_LEFT :
-                                  params.belt_axis == 1    ? PConf::Alignment::TOP_LEFT :
-                                                             PConf::Alignment::BOTTOM_RIGHT;
-            pcfg.clamp_to_bin = true;
-        }
-        else if (params.is_seq_print) {
+        if (params.is_seq_print) {
            // Start placing the items from the center of the print bed
            pcfg.starting_point = PConf::Alignment::BOTTOM_LEFT;
        }
@@ -453,50 +444,6 @@ protected:
        return bindist;
    }

-    // Belt printers pack from the end of the belt that prints first, and a corner
-    // packer's checks (pile inside the bin, pack origin) apply to them as well.
-    bool corner_packing() const { return params.is_belt || m_pconf.starting_point == PConfig::Alignment::BOTTOM_LEFT; }
-
-    static double at(const Box::PointType &pt, int i) { return double(i == 0 ? getX(pt) : getY(pt)); }
-
-    // Position along the belt in print order: increasing from the end that prints first.
-    double belt_pos(const Box::PointType &pt) const { return params.belt_reversed ? -at(pt, params.belt_axis) : at(pt, params.belt_axis); }
-    double belt_start(const Box &bb) const { return belt_pos(params.belt_reversed ? bb.maxCorner() : bb.minCorner()); }
-    double belt_end(const Box &bb) const { return belt_pos(params.belt_reversed ? bb.minCorner() : bb.maxCorner()); }
-
-    // The corner of the bin the belt pile grows from.
-    Box::PointType belt_origin() const
-    {
-        const Box bb = sl::boundingBox(m_bin);
-        auto o = bb.minCorner();
-        if (params.belt_reversed) {
-            if (params.belt_axis == 0) setX(o, getX(bb.maxCorner()));
-            else                       setY(o, getY(bb.maxCorner()));
-        }
-        return o;
-    }
-
-    // An item's far edge in print order is what it costs (so a row fills across the
-    // belt before the pile advances), with a slight pull toward the near lateral
-    // edge and the same penalty as the bottom-left heuristic for sitting outside
-    // the corner.
-    double dist_along_belt(const Box &ibb)
-    {
-        const Box    bin = sl::boundingBox(m_bin);
-        const int    l   = 1 - params.belt_axis;
-        const double lat = at(ibb.minCorner(), l) - at(bin.minCorner(), l);
-        double       d   = belt_end(ibb) - belt_start(bin);
-        d += lat < 0 ? 10 * -lat : 0.1 * lat;
-        if (double behind = belt_start(ibb) - belt_start(bin); behind < 0)
-            d += 10 * -behind;
-        return norm(d);
-    }
-
-    double corner_bindist(const Box &ibb, const Slic3r::Point &origin_pack)
-    {
-        return params.is_belt ? dist_along_belt(ibb) : dist_for_BOTTOM_LEFT(ibb, origin_pack);
-    }
-
    double dist_to_bin(const Box& ibb, const Slic3r::Point& origin_pack, typename Packer::PlacementConfig::Alignment starting_point_alignment)
    {
        double bindist = 0;
@@ -586,8 +533,8 @@ protected:

            // The smalles distance from the arranged pile center:
            double dist = norm(*(std::min_element(dists.begin(), dists.end())));
-            if (corner_packing()) {
-                double bindist = corner_bindist(ibb, origin_pack);
+            if (m_pconf.starting_point == PConfig::Alignment::BOTTOM_LEFT) {
+                double bindist = dist_for_BOTTOM_LEFT(ibb, origin_pack);
                score = 0.2 * dist + 0.8 * bindist;
            }
            else {
@@ -644,8 +591,8 @@ protected:
            break;
        }
        case LAST_BIG_ITEM: {
-            if (corner_packing()) {
-                score = corner_bindist(ibb, origin_pack);
+            if (m_pconf.starting_point == PConfig::Alignment::BOTTOM_LEFT) {
+                score = dist_for_BOTTOM_LEFT(ibb, origin_pack);
            }
            else {
                if (m_pilebb.defined)
@@ -660,8 +607,8 @@ protected:
            // already processed bigger items.
            // No need to play around with the anchor points, the center will be
            // just fine for small items
-            if (corner_packing())
-                score = corner_bindist(ibb, origin_pack);
+            if (m_pconf.starting_point == PConfig::Alignment::BOTTOM_LEFT)
+                score = dist_for_BOTTOM_LEFT(ibb, origin_pack);
            else {
                // Align mainly around existing items
                score = 0.8 * norm(pl::distance(ibb.center(), bigbb.center()))+ 0.2*norm(pl::distance(ibb.center(), origin_pack));
@@ -762,28 +709,6 @@ protected:
            score += 1 * (new_extruder_cnt-last_extruder_cnt);
        }

-        // On a belt the parts print in belt order, so every colour change between
-        // parts is a filament change. Items arrive sorted by extruder and the pile
-        // grows from the leading end; keep each colour's run contiguous by charging
-        // an item for every packed item of another colour it does not fully follow,
-        // counting the tilted layers that reach belt_tilt_slope * height past that
-        // item's far edge.
-        if (params.is_belt && !params.is_seq_print) {
-            const std::set<int> item_colours(item.extrude_ids.begin(), item.extrude_ids.end());
-            const double        item_start = belt_start(ibb);
-            for (Item &p : m_items) {
-                if (p.is_virt_object)
-                    continue;
-                const std::set<int> p_colours(p.extrude_ids.begin(), p.extrude_ids.end());
-                const bool same_colour = std::includes(item_colours.begin(), item_colours.end(), p_colours.begin(), p_colours.end())
-                                      || std::includes(p_colours.begin(), p_colours.end(), item_colours.begin(), item_colours.end());
-                if (same_colour)
-                    continue;
-                if (item_start < belt_end(p.boundingBox()) + scaled(p.height * params.belt_tilt_slope))
-                    score += 10.;
-            }
-        }
-
        return std::make_tuple(score, fullbb);
    }

@@ -860,8 +785,7 @@ public:

            auto binbb = sl::boundingBox(m_bin);

-            auto starting_point = this->params.is_belt ? belt_origin() :
-                cfg.starting_point == PConfig::Alignment::BOTTOM_LEFT ? binbb.minCorner() : binbb.center();
+            auto starting_point = cfg.starting_point == PConfig::Alignment::BOTTOM_LEFT ? binbb.minCorner() : binbb.center();
            // if we have wipe tower, items should be arranged around wipe tower
            for (Item itm : items) {
                if (itm.is_wipe_tower) {
@@ -1012,7 +936,7 @@ std::function<double(const Item &, const ItemGroup&)> AutoArranger<ExPolygon>::g
        auto mp = m_merged_pile;
        mp.emplace_back(itm.transformedShape());
        auto chull = sl::convexHull(mp);
-        if (corner_packing())
+        if (m_pconf.starting_point == PConfig::Alignment::BOTTOM_LEFT)
        {
            if (!sl::isInside(chull, m_bin))
                score += LARGE_COST_TO_REJECT;
@@ -146,13 +146,6 @@ struct ArrangeParams {
    float nozzle_height = 0;
    float printable_height = 256.0;
    Vec2d align_center{ 0.5,0.5 };
-    // Belt printer: items print in the order they lie along the belt axis, from
-    // its low end unless belt_reversed, and a part's top prints
-    // belt_tilt_slope * height further along it than its base.
-    bool  is_belt         = false;
-    int   belt_axis       = 1;   // 0 = X, 1 = Y
-    bool  belt_reversed   = false;
-    float belt_tilt_slope = 1.f; // cot(belt tilt angle), 0 when the belt is not tilted

    ArrangePolygons excluded_regions;   // regions cant't be used
    ArrangePolygons nonprefered_regions; // regions can be used but not prefered
@@ -1,554 +0,0 @@
-#include <limits>
-#include "BeltBrim.hpp"
-
-#include "ClipperUtils.hpp"
-#include "Flow.hpp"
-#include "Layer.hpp"
-#include "Polygon.hpp"
-#include "Print.hpp"
-#include "ShortestPath.hpp"
-#include "Support/BeltFloorContext.hpp"
-#include "BoundingBox.hpp"
-#include "ExPolygon.hpp"
-#include "ExtrusionEntity.hpp"
-#include "ExtrusionEntityCollection.hpp"
-#include "Point.hpp"
-#include "Polyline.hpp"
-#include "PrintConfig.hpp"
-#include "libslic3r.h"
-
-#include <algorithm>
-#include <cmath>
-#include <cstddef>
-#include <cstdint>
-#include <cstdlib>
-#include <utility>
-#include <vector>
-
-namespace Slic3r {
-
-// ---------------------------------------------------------------- scaling
-
-static inline Point scale_u_point(const Point &p, int from_axis, double factor)
-{
-    // llround, not a cast: casting truncates toward zero, so a round trip would
-    // walk every vertex toward the origin by up to one unit per pass.
-    return from_axis == 0 ?
-        Point(coord_t(std::llround(double(p.x()) * factor)), p.y()) :
-        Point(p.x(), coord_t(std::llround(double(p.y()) * factor)));
-}
-
-static inline void scale_u_polygon(Polygon &poly, int from_axis, double factor)
-{
-    for (Point &p : poly.points)
-        p = scale_u_point(p, from_axis, factor);
-}
-
-ExPolygons belt_scale_u(const ExPolygons &src, const BeltBrimFrame &frame, double factor)
-{
-    ExPolygons out = src;
-    for (ExPolygon &ex : out) {
-        scale_u_polygon(ex.contour, frame.from_axis, factor);
-        for (Polygon &hole : ex.holes)
-            scale_u_polygon(hole, frame.from_axis, factor);
-    }
-    return out;
-}
-
-Polylines belt_scale_u(const Polylines &src, const BeltBrimFrame &frame, double factor)
-{
-    Polylines out = src;
-    for (Polyline &pl : out)
-        for (Point &p : pl.points)
-            p = scale_u_point(p, frame.from_axis, factor);
-    return out;
-}
-
-// ---------------------------------------------------------------- sweep
-
-ExPolygons sweep_ex(const ExPolygons &src, const Point &t)
-{
-    if (src.empty())
-        return {};
-    if (t == Point(0, 0))
-        return src;
-
-    // One parallelogram per boundary edge.  Together with P and P + t these
-    // cover the Minkowski sum exactly: for any q = p + s*t with p in P and
-    // s in [0, 1], let s* be the smallest lambda >= 0 with q - lambda*t in P.
-    // Either s* == 0 (so q is in P) or q - s* * t lies on some boundary edge e,
-    // putting q in that edge's parallelogram.  Hole edges must be included, or
-    // holes narrower than t along t would wrongly survive the sweep.
-    Polygons quads;
-    for (const ExPolygon &ex : src)
-        for (size_t c = 0; c < ex.num_contours(); ++ c)
-            for (const Line &e : ex.contour_or_hole(c).lines()) {
-                if (e.a == e.b)
-                    continue;
-                Polygon q;
-                q.points = { e.a, e.b, e.b + t, e.a + t };
-                // The non-zero fill rule counts a clockwise ring as -1, which
-                // would punch a hole instead of adding material.  Edges parallel
-                // to t give a zero-area quad; Clipper discards those harmlessly.
-                if (q.is_clockwise())
-                    q.reverse();
-                quads.emplace_back(std::move(q));
-            }
-
-    ExPolygons shifted = src;
-    for (ExPolygon &ex : shifted)
-        ex.translate(t);
-
-    // union_ex(ExPolygons, Polygons) uses pftNonZero, which is the fill rule the
-    // argument above relies on.
-    return union_ex(union_ex(src, shifted), quads);
-}
-
-// ---------------------------------------------------------------- brim region
-
-ExPolygons belt_brim_region(const ExPolygons    &footprint_flat,
-                            bool                 has_outer,
-                            bool                 has_inner,
-                            coord_t              brim_width,
-                            coord_t              object_gap,
-                            coord_t              leading,
-                            coord_t              lateral,
-                            const BeltBrimFrame &frame)
-{
-    if (footprint_flat.empty() || (! has_outer && ! has_inner))
-        return {};
-
-    ExPolygons out;
-
-    if (has_outer) {
-        // Offset the outer ring from the contours only, so a hole cannot punch
-        // through it.  Same reasoning as the plate brim in Brim.cpp.
-        Polygons contours;
-        contours.reserve(footprint_flat.size());
-        for (const ExPolygon &ex : footprint_flat)
-            contours.emplace_back(ex.contour);
-
-        // Inner and outer boundary offset from the same polygon, to avoid
-        // round-off mismatch between them.
-        ExPolygons inner = offset_ex(contours, float(object_gap), jtRound, SCALED_RESOLUTION);
-
-        // Close the interior before offsetting outwards.  A belt contact patch is often a
-        // narrow, broken-up strip, and the offset rings of two islands less than
-        // 2 x brim_width apart merge and fill the space between them - space that lies
-        // UNDER the part, which is not what "outer brim" means.  Closing also swallows
-        // holes in the patch for the same reason.  Concavity-filling only, so an apron or
-        // any other outward protrusion is untouched.
-        ExPolygons envelope = brim_width > 0 ? closing_ex(inner, float(brim_width)) : inner;
-
-        ExPolygons base  = envelope;
-        if (leading > 0) {
-            // Sweep downhill from the gapped keep-out, so the apron is contiguous with
-            // the ring instead of starting inside the gap.
-            const Point t = frame.from_axis == 0 ?
-                Point(frame.downhill_sign() * leading, 0) :
-                Point(0, frame.downhill_sign() * leading);
-            base = union_ex(base, sweep_ex(envelope, t));
-        }
-        if (lateral > 0) {
-            // Across the belt, both ways.  Swept from `base` so the apron is widened
-            // too, and in the flattened frame the cross-belt axis is unscaled, so this
-            // distance is already a true on-belt distance.
-            const Point t = frame.from_axis == 0 ? Point(0, lateral) : Point(lateral, 0);
-            ExPolygons widened = union_ex(sweep_ex(base, t), sweep_ex(base, Point(-t.x(), -t.y())));
-            base = union_ex(base, to_polygons(widened));
-        }
-        ExPolygons outer = offset_ex(base, float(brim_width), jtRound, SCALED_RESOLUTION);
-        expolygons_append(out, diff_ex(outer, envelope));
-    }
-
-    if (has_inner) {
-        // Holes reversed so a negative offset grows inward, mirroring Brim.cpp.
-        // No apron here: an apron growing into a hole interior is never useful.
-        Polygons holes;
-        for (const ExPolygon &ex : footprint_flat)
-            polygons_append(holes, ex.holes);
-        polygons_reverse(holes);
-        if (! holes.empty()) {
-            ExPolygons hole_inner = offset_ex(holes, - float(brim_width + object_gap));
-            ExPolygons hole_outer = offset_ex(holes, - float(object_gap));
-            expolygons_append(out, intersection_ex(diff_ex(hole_outer, hole_inner), holes));
-        }
-    }
-
-    return union_ex(out);
-}
-
-// ---------------------------------------------------------------- line lattice
-
-std::vector<coord_t> belt_brim_line_positions(coord_t u_lo,
-                                              coord_t u_hi,
-                                              coord_t pitch_u,
-                                              coord_t u_anchor)
-{
-    std::vector<coord_t> out;
-    if (pitch_u <= 0 || u_hi <= u_lo)
-        return out;
-
-    // Walk the lattice from just below u_lo.  Integer arithmetic throughout, so
-    // the half-open interval needs no epsilon: a point landing exactly on u_hi
-    // belongs to the next band.
-    int64_t k = int64_t(std::floor(double(u_lo - u_anchor) / double(pitch_u))) - 1;
-    while (u_anchor + coord_t(k) * pitch_u < u_lo)
-        ++ k;
-    for (;; ++ k) {
-        const coord_t u = u_anchor + coord_t(k) * pitch_u;
-        if (u >= u_hi)
-            break;
-        out.emplace_back(u);
-    }
-    return out;
-}
-
-// ---------------------------------------------------------------- pipeline
-
-// A band of the belt surface as an explicit box, clamped to `bounds` along the
-// shear axis.  Deliberately not BeltFloorContext::surface_polygon(): those
-// half-planes span +-1000 mm, which is wasteful to clip against and dangerous to
-// feed through the flattening scale.
-static Polygon band_box(const BoundingBox &bounds, int from_axis, coordf_t u_lo, coordf_t u_hi)
-{
-    coord_t lo = scale_(u_lo);
-    coord_t hi = scale_(u_hi);
-    const coord_t bmin = from_axis == 0 ? bounds.min.x() : bounds.min.y();
-    const coord_t bmax = from_axis == 0 ? bounds.max.x() : bounds.max.y();
-    lo = std::max(lo, bmin);
-    hi = std::min(hi, bmax);
-    Polygon poly;
-    if (hi <= lo)
-        return poly;
-    if (from_axis == 0)
-        poly.points = { Point(lo, bounds.min.y()), Point(hi, bounds.min.y()),
-                        Point(hi, bounds.max.y()), Point(lo, bounds.max.y()) };
-    else
-        poly.points = { Point(bounds.min.x(), lo), Point(bounds.max.x(), lo),
-                        Point(bounds.max.x(), hi), Point(bounds.min.x(), hi) };
-    return poly;
-}
-
-ExPolygons belt_brim_clip_leading_edge(const ExPolygons &region, const BeltBrimFrame &frame, coordf_t u_cut)
-{
-    if (region.empty())
-        return region;
-    BoundingBox keep_bb = get_extents(region);
-    keep_bb.offset(scale_(1.));
-    const bool    low_side = frame.downhill_sign() < 0;   // downhill is -u
-    const Polygon keep = band_box(keep_bb, frame.from_axis,
-        low_side ? unscale<double>(frame.from_axis == 0 ? keep_bb.min.x() : keep_bb.min.y()) : u_cut,
-        low_side ? u_cut : unscale<double>(frame.from_axis == 0 ? keep_bb.max.x() : keep_bb.max.y()));
-    return keep.empty() ? ExPolygons{} : intersection_ex(region, Polygons{ keep });
-}
-
-// Everything the per-band line generator needs, gathered once per object.
-struct BeltBrimContext
-{
-    BeltFloorContext ctx;
-    BeltBrimFrame    frame;
-    ExPolygons       region;      // brim region, object-local slicing XY
-    BoundingBox      region_bbox;
-    Flow             brim_flow;
-    coord_t          pitch_u   = 0;
-    coord_t          u_anchor  = 0;
-    double           in_plane_pitch = 0.;   // mm
-};
-
-// Emit the cross-belt brim lines that belong to the band [print_z - height, print_z].
-static void belt_brim_band_paths(const BeltBrimContext      &bc,
-                                 coordf_t                    print_z,
-                                 coordf_t                    height,
-                                 const Polygons             &obstacles,
-                                 ExtrusionEntityCollection  &out,
-                                 ExPolygons                 &areas_out)
-{
-    coordf_t u_lo = bc.ctx.cutoff_u(print_z - height);
-    coordf_t u_hi = bc.ctx.cutoff_u(print_z);
-    if (u_lo > u_hi)
-        std::swap(u_lo, u_hi);
-
-    // How wide this band is measured ON the belt, versus one nominal bead.
-    const double band_in_plane = (u_hi - u_lo) * bc.frame.u_stretch();
-
-    // Fraction of the layer height at which a line sits above the belt.  Toward the
-    // downhill edge, so the sheet is reasonably thick while the nozzle stays clear of
-    // the belt itself.
-    static constexpr double BAND_CLEARANCE_FRACTION = 0.75;
-
-    std::vector<coord_t> us;
-    double uniform_clearance = 0.;   // 0 => derive per line from its own position
-    double line_pitch        = bc.in_plane_pitch;
-    // One line also serves a band up to half a bead wider than the nominal pitch (a 0.3 mm
-    // first layer at 45 degrees): its flow is matched to the band, so the bead is that much
-    // wider. Two lattice lines in such a band would land almost on top of each other.
-    if (band_in_plane <= 1.5 * bc.in_plane_pitch + EPSILON) {
-        // Steep belt, which is the normal case: the band is narrower than one bead, so
-        // exactly one line fits.  Place it at a FIXED fraction of the band rather than
-        // on a nominal-spacing lattice.  On a lattice each line lands at an arbitrary
-        // point in its band, the clearance sweeps [0, height] from band to band, and the
-        // bead width therefore varies by 2x - visible as ragged, uneven brim lines.
-        // Anchoring to the band makes the clearance identical everywhere, so every bead
-        // is the same width.
-        //
-        // The spacing is then whatever the bands give (height / sin(tilt) on the belt)
-        // rather than the nominal bead spacing, so the flow below is matched to THAT
-        // pitch.  Matched flow at the real pitch is what keeps the sheet uniform and
-        // gap-free; using nominal flow at band spacing would over-feed it.
-        us.push_back(scale_(bc.ctx.cutoff_u(print_z - BAND_CLEARANCE_FRACTION * height)));
-        uniform_clearance = BAND_CLEARANCE_FRACTION * height;
-        line_pitch        = band_in_plane;
-    } else {
-        // Shallow belt: the band is wider than a bead, so it takes several lines and they
-        // have to sit on the nominal lattice.  Their clearances then differ, and so do
-        // their widths - unavoidable here, but shallow belts are the rare case.
-        us = belt_brim_line_positions(scale_(u_lo), scale_(u_hi), bc.pitch_u, bc.u_anchor);
-    }
-    if (us.empty())
-        return;
-
-    const Polygons region_polys = to_polygons(bc.region);
-
-    // One lattice line at a time: the clearance - and therefore the extrusion
-    // volume - is a property of the line's u, so the pieces of different lines
-    // must not be pooled before the flow is resolved.
-    // Overshoot the region so the clip, not the line's ends, decides the extent.
-    const coord_t margin = coord_t(SCALED_EPSILON) + 1;
-    coord_t       u_prev = std::numeric_limits<coord_t>::min();
-    for (coord_t u : us) {
-        // Nozzle-to-belt clearance for this line.  Constant along the line, because the
-        // belt height depends only on the shear-axis coordinate.  Band-anchored lines
-        // share one clearance by construction; lattice lines (shallow belts, or a first
-        // layer thick enough that the band is wider than a bead) each get their own.
-        //
-        // A lattice line can fall where the belt is only a hair below the band's print_z.
-        // The bead there would be laid scraping the belt while its flow is sized for a
-        // taller cell, so it is moved uphill to the same fraction of the band the
-        // single-line case uses.  (The clearance is along slice Z; the real gap under the
-        // nozzle is clearance x cos(tilt), 0.53 h at 45 degrees for the 0.75 fraction.)
-        double clearance = uniform_clearance;
-        if (clearance <= 0.) {
-            const Point probe = bc.frame.from_axis == 0 ? Point(u, 0) : Point(0, u);
-            clearance = print_z - bc.ctx.floor_print_z(probe);
-            if (clearance < BAND_CLEARANCE_FRACTION * height) {
-                clearance = BAND_CLEARANCE_FRACTION * height;
-                u         = scale_(bc.ctx.cutoff_u(print_z - clearance));
-            }
-            clearance = std::min(clearance, height);
-        }
-        // A line moved uphill can land on, or almost on, its neighbour; two beads closer
-        // than half a pitch would be laid into the same cell.
-        if (u_prev != std::numeric_limits<coord_t>::min() && std::abs(u - u_prev) < bc.pitch_u / 2)
-            continue;
-        u_prev = u;
-
-        Polyline line;
-        if (bc.frame.from_axis == 0)
-            line.points = { Point(u, coord_t(bc.region_bbox.min.y() - margin)),
-                            Point(u, coord_t(bc.region_bbox.max.y() + margin)) };
-        else
-            line.points = { Point(coord_t(bc.region_bbox.min.x() - margin), u),
-                            Point(coord_t(bc.region_bbox.max.x() + margin), u) };
-
-        Polylines pieces = intersection_pl(Polylines{ line }, region_polys);
-        if (! obstacles.empty())
-            pieces = diff_pl(pieces, obstacles);
-        if (pieces.empty())
-            continue;
-
-        // with_cross_section, not with_height: it reaches the prescribed volume while
-        // KEEPING the extrusion spacing, so the bead is sized to fill exactly one
-        // pitch x clearance cell of the sheet.
-        const Flow f = bc.brim_flow.with_cross_section(float(line_pitch * clearance));
-
-        // Footprint of these beads, for the first-layer convex hull and bbox.
-        for (const Polygon &p : offset(pieces, 0.5f * float(f.scaled_width())))
-            areas_out.emplace_back(ExPolygon(p));
-
-        extrusion_entities_append_paths(out.entities, chain_polylines(std::move(pieces)),
-                                        erBrim, f.mm3_per_mm(), f.width(), float(clearance));
-    }
-}
-
-// Union of everything extruded at `print_z` that the brim must keep clear of, expressed
-// in `self`'s local slicing frame.  Includes `self` itself: its slice at this Z can
-// overhang outside the belt footprint and land in the brim ring, which the flattened
-// brim_object_gap - a belt-plane separation - does not cover.
-//
-// THREADING: this runs inside posSupportMaterial, which Print::process() executes for all
-// objects in a tbb::parallel_for (Print.cpp).  Object slices are finished by then and safe
-// to read across objects, but SUPPORT layers are not: another object's thread may be
-// inside clear_support_layers() - which deletes the SupportLayer pointers - right now, so
-// touching a foreign object's support_layers() here is a use-after-free.  Only this
-// object's own supports are consulted; they are complete, because make_belt_brim() runs at
-// the tail of this object's own generate_support_material().  The cost is that the brim
-// does not dodge a *different* object's support at the same Z, which needs the objects to
-// overlap in the belt direction in the first place.
-// `region_bbox` bounds the brim; anything outside it cannot clip a brim line, so whole
-// objects are skipped without materialising their polygons.  On a typical plate the
-// objects do not overlap and every foreign object drops out here, which matters because
-// this runs once per band - hundreds of times per object.
-static Polygons belt_brim_obstacles(const Print &print, const PrintObject &self,
-                                    const BoundingBox &region_bbox, coordf_t print_z, coordf_t tol)
-{
-    const Point shift_self = self.instances().empty() ? Point(0, 0)
-                                                      : self.instances().front().shift_without_plate_offset();
-    Polygons out;
-    for (const PrintObject *o : print.objects()) {
-        const bool is_self = (o == &self);
-        for (const PrintInstance &inst : o->instances()) {
-            const Point delta = inst.shift_without_plate_offset() - shift_self;
-            if (const Layer *l = o->get_layer_at_printz(print_z, tol)) {
-                BoundingBox lb = get_extents(l->lslices);
-                lb.translate(delta.x(), delta.y());
-                if (lb.overlap(region_bbox)) {
-                    Polygons ps = to_polygons(l->lslices);
-                    for (Polygon &p : ps)
-                        p.translate(delta);
-                    polygons_append(out, std::move(ps));
-                }
-            }
-            if (! is_self)
-                continue;
-            if (const SupportLayer *sl = o->get_support_layer_at_printz(print_z, tol)) {
-                Polygons ps = sl->support_fills.polygons_covered_by_spacing();
-                for (Polygon &p : ps)
-                    p.translate(delta);
-                polygons_append(out, std::move(ps));
-            }
-        }
-    }
-    if (out.size() < 2)
-        return out;   // union_() of 0 or 1 polygons is pure overhead
-    return union_(out);
-}
-
-void make_belt_brim(PrintObject &object)
-{
-    object.clear_belt_brim();
-    if (! object.has_belt_brim())
-        return;
-
-    const Print &print = *object.print();
-    BeltBrimContext bc;
-    if (! bc.ctx.init(object.slicing_parameters(), print.config()))
-        return;
-    bc.frame = BeltBrimFrame{ bc.ctx.shear_factor(), bc.ctx.from_axis() };
-
-    const size_t nlayers = object.layers().size();
-    if (nlayers == 0)
-        return;
-
-    // 1. Belt footprint: the union of each layer's slice clipped to that layer's
-    //    own contact band.  This is the object's bottom face, which on a belt is
-    //    spread over every layer instead of sitting in layer 0.
-    ExPolygons footprint_acc;
-    for (size_t i = 0; i < nlayers; ++ i) {
-        const Layer &layer = *object.layers()[i];
-        if (layer.lslices.empty())
-            continue;
-        // print_z - height, not the previous layer's print_z: variable layer
-        // heights make the latter wrong.
-        coordf_t u_lo = bc.ctx.cutoff_u(layer.print_z - layer.height);
-        coordf_t u_hi = bc.ctx.cutoff_u(layer.print_z);
-        if (u_lo > u_hi)
-            std::swap(u_lo, u_hi);
-        BoundingBox bb = get_extents(layer.lslices);
-        bb.offset(scale_(1.));
-        const Polygon band = band_box(bb, bc.frame.from_axis, u_lo, u_hi);
-        if (band.empty())
-            continue;
-        expolygons_append(footprint_acc, intersection_ex(layer.lslices, Polygons{ band }));
-    }
-    const ExPolygons footprint = union_ex(footprint_acc);
-    if (footprint.empty())
-        return;
-
-    // 2. Brim region, offset in the flattened (true on-belt) metric.
-    const PrintObjectConfig &cfg = object.config();
-    bc.brim_flow = print.brim_flow();
-    const double  flow_w = bc.brim_flow.scaled_spacing() * SCALING_FACTOR;
-    // Quantize to an even number of lines, as the plate brim does.
-    const coord_t width   = scale_(std::floor(cfg.brim_width.value / flow_w / 2) * flow_w * 2);
-    const coord_t leading = scale_(cfg.leading_brim_length.value);
-    const coord_t lateral = scale_(cfg.extra_brim_width.value);
-    const coord_t gap     = scale_(cfg.brim_object_gap.value);
-
-    // Belt printers collapse Auto / Mouse ear / Painted to outer-only: the auto width
-    // heuristic and flat ear discs have no meaning on a tilted plane.  Leading-edge-only
-    // is an outer brim too; it is narrowed down to the first contact below.
-    const BrimType bt = cfg.brim_type.value;
-    const bool has_outer = bt == btOuterOnly || bt == btOuterAndInner
-                        || bt == btAutoBrim  || bt == btEar || bt == btPainted
-                        || bt == btLeadingEdgeOnly;
-    const bool has_inner = bt == btInnerOnly || bt == btOuterAndInner;
-
-    bc.region = belt_unflatten(
-        belt_brim_region(belt_flatten(footprint, bc.frame), has_outer, has_inner,
-                         width, gap, leading, lateral, bc.frame),
-        bc.frame);
-
-    if (bt == btLeadingEdgeOnly && ! bc.region.empty())
-        // The cut is the uphill edge of the first layer's contact band: everything
-        // past it belongs to later contacts.
-        bc.region = belt_brim_clip_leading_edge(bc.region, bc.frame,
-                                                bc.ctx.cutoff_u(object.layers().front()->print_z));
-
-    if (bc.region.empty())
-        return;
-    bc.region_bbox = get_extents(bc.region);
-
-    // 3. Line lattice.  Fixed pitch in the flattened metric, anchored at the
-    //    footprint's leading-most edge so lines stay collinear across
-    //    disconnected islands and across the apron prologue.
-    bc.pitch_u = std::max<coord_t>(1, coord_t(bc.brim_flow.scaled_spacing() * bc.frame.cos_tilt()));
-    bc.in_plane_pitch = unscale<double>(bc.pitch_u) * bc.frame.u_stretch();
-    {
-        const BoundingBox fbb = get_extents(footprint);
-        const bool low_side = bc.frame.shear > 0.;
-        bc.u_anchor = bc.frame.from_axis == 0 ? (low_side ? fbb.min.x() : fbb.max.x())
-                                              : (low_side ? fbb.min.y() : fbb.max.y());
-    }
-
-    // 4. Bands coincident with an object layer.
-    std::vector<ExtrusionEntityCollection> by_layer(nlayers);
-    std::vector<ExPolygons>                areas_by_layer(nlayers);
-    for (size_t i = 0; i < nlayers; ++ i) {
-        const Layer &layer = *object.layers()[i];
-        const Polygons obstacles = belt_brim_obstacles(print, object, bc.region_bbox, layer.print_z, 0.5 * layer.height);
-        belt_brim_band_paths(bc, layer.print_z, layer.height, obstacles, by_layer[i], areas_by_layer[i]);
-    }
-
-    // 5. Apron prologue: the part of the region downhill of the object's first
-    //    layer, which has no object layer to ride on.
-    std::vector<BeltBrimBand> prologue;
-    {
-        const Layer   &first  = *object.layers().front();
-        const coordf_t h      = first.height;
-        const bool     low_side = bc.frame.shear > 0.;
-        const coord_t  u_lead_s = bc.frame.from_axis == 0
-            ? (low_side ? bc.region_bbox.min.x() : bc.region_bbox.max.x())
-            : (low_side ? bc.region_bbox.min.y() : bc.region_bbox.max.y());
-        const coordf_t u_lead  = unscale<double>(u_lead_s);
-        // print_z at which the belt surface crosses the region's leading edge.
-        const coordf_t z_lead  = bc.ctx.shear_factor() * u_lead
-                               + bc.ctx.floor_offset() + bc.ctx.z_shift();
-        if (h > EPSILON)
-            for (coordf_t z = first.print_z - h; z > z_lead - h; z -= h) {
-                const Polygons obstacles = belt_brim_obstacles(print, object, bc.region_bbox, z, 0.5 * h);
-                BeltBrimBand band;
-                band.print_z = z;
-                band.height  = h;
-                belt_brim_band_paths(bc, z, h, obstacles, band.fills, band.areas);
-                if (! band.fills.empty())
-                    prologue.emplace_back(std::move(band));
-            }
-        // Lowest Z first, so collect_layers_to_print sees them in print order.
-        std::reverse(prologue.begin(), prologue.end());
-    }
-
-    object.set_belt_brim(std::move(by_layer), std::move(areas_by_layer), std::move(prologue));
-}
-
-} // namespace Slic3r
@@ -1,178 +0,0 @@
-#ifndef slic3r_BeltBrim_hpp_
-#define slic3r_BeltBrim_hpp_
-
-#include "ExPolygon.hpp"
-#include "ExtrusionEntityCollection.hpp"
-#include "Point.hpp"
-#include "Polyline.hpp"
-#include "libslic3r.h"
-
-#include <cmath>
-#include <vector>
-
-// Belt-printer brim geometry.
-//
-// A belt printer slices in a ROTATED frame, so the belt surface is not the
-// Z=0 bed plane but a tilted plane in slicing space:
-//
-//     z_slicing(u) = shear * u + floor_offset + z_shift,   u = X or Y
-//
-// where `shear == tan(tilt)` (SlicingParameters::belt_floor_shear_factor) and
-// the axis is selected by SlicingParameters::belt_floor_from_axis.  See
-// Support/BeltFloorContext.hpp for the canonical accessors.
-//
-// Consequences that drive everything in this file:
-//
-//   * A horizontal slicing layer touches the belt only along a narrow strip at
-//     its leading edge, `layer_height / shear` wide (~0.2 mm at 45 degrees).
-//     The object's belt footprint - its bottom face - is therefore spread over
-//     every layer, not contained in layer 0.
-//   * Distances measured in slicing XY are NOT on-belt distances: moving `du`
-//     along the shear axis travels `du / cos(tilt)` across the belt.  So brim
-//     offsets have to be taken in a "flattened" space where the shear axis is
-//     stretched by `1 / cos(tilt)`, then mapped back.
-//   * Brim ahead of the part (downhill) lies at slicing Z BELOW the object's
-//     first layer, because the object's layer 0 is precisely its leading
-//     contact with the belt.
-//
-// Everything here is pure geometry on ExPolygons/Polylines so it can be unit
-// tested without a Print.  Keep user-visible strings out of this file: it is
-// not listed in localization/i18n/list.txt.
-
-namespace Slic3r {
-
-// Tilt window within which the BELT plane, not the bed plane, is the adhesion
-// surface.  Below ~1 degree a belt is a flat bed as far as adhesion goes, and the
-// contact band would be layer_height/sin(tilt) - tens of millimetres - so the
-// ordinary plate brim is both correct and cheaper.  Above ~85 degrees the whole
-// brim compresses into a sliver and is not worth generating.
-inline constexpr double BELT_BRIM_MIN_TILT_DEG = 1.;
-inline constexpr double BELT_BRIM_MAX_TILT_DEG = 85.;
-
-// Description of the tilted belt plane, reduced to what the brim geometry needs.
-struct BeltBrimFrame
-{
-    // tan(tilt).  Sign selects which way is downhill.
-    double shear     = 0.;
-    // 0 = X, 1 = Y.  Matches BeltFloorContext::from_axis().
-    int    from_axis = 1;
-
-    // 1 / cos(tilt).  Stretch factor that turns a projected distance along
-    // `from_axis` into the true distance travelled across the belt.
-    double u_stretch() const { return std::sqrt(1. + shear * shear); }
-    // cos(tilt).  The inverse mapping.
-    double cos_tilt()  const { return 1. / this->u_stretch(); }
-    // Downhill is where the belt surface is lower, i.e. printed earlier, i.e.
-    // the leading edge of the part.  For shear > 0 that is -u.
-    int    downhill_sign() const { return shear > 0. ? -1 : +1; }
-};
-
-// Scale only the `from_axis` component by `factor`, rounding to nearest.
-//
-// Deliberately not MultiPoint::scale(fx, fy) / ExPolygon::scale(fx, fy): those
-// truncate toward zero, which is asymmetric about the origin and loses up to a
-// full coordinate unit per vertex on every round trip.
-ExPolygons belt_scale_u(const ExPolygons &src, const BeltBrimFrame &frame, double factor);
-Polylines  belt_scale_u(const Polylines  &src, const BeltBrimFrame &frame, double factor);
-
-// Into / out of the space where Euclidean offsets equal true on-belt distances.
-inline ExPolygons belt_flatten(const ExPolygons &src, const BeltBrimFrame &frame)
-    { return belt_scale_u(src, frame, frame.u_stretch()); }
-inline ExPolygons belt_unflatten(const ExPolygons &src, const BeltBrimFrame &frame)
-    { return belt_scale_u(src, frame, frame.cos_tilt()); }
-
-// Minkowski sum of `src` with the segment [0, t]: the region swept by sliding
-// `src` along t.  Used to grow the brim downhill for "extra brim width".
-//
-// Implemented as union_(P, P + t, {parallelogram per boundary edge}) over ALL
-// contours including holes, with every parallelogram forced counter-clockwise
-// so the non-zero fill rule closes holes narrower than t along the sweep
-// direction.  A hole survives exactly when it is wider than |t| measured along
-// t - not when it is wider in its narrowest Euclidean direction.
-ExPolygons sweep_ex(const ExPolygons &src, const Point &t);
-
-// "Leading edge only": keep the part of a brim region (unflattened, slicing XY)
-// at or downhill of the object's first contact with the belt, so the part is
-// supported as it lands and nothing is printed alongside it afterwards.  `u_cut`
-// is the uphill edge of the first layer's contact band along `frame.from_axis`,
-// in mm (BeltFloorContext::cutoff_u of the first layer); downhill is the side
-// `frame.downhill_sign()` points to.
-ExPolygons belt_brim_clip_leading_edge(const ExPolygons &region, const BeltBrimFrame &frame, coordf_t u_cut);
-
-// Brim region for one already-flattened belt footprint.  All lengths are scaled
-// and measured in the flattened (true on-belt) metric.
-//
-// `has_outer` / `has_inner` are the resolved BrimType: belt printers collapse
-// Auto / Mouse ear / Painted to outer-only, so the caller does that mapping and
-// this function never needs PrintConfig.
-//
-// Two directional extras are applied to the footprint before the outer offset, so
-// each one buys reach in one direction only:
-//
-//   `leading` (leading_brim_length) sweeps the footprint DOWNHILL along the belt,
-//   so every leading-facing edge gains an apron ahead of it.
-//   `lateral`  (extra_brim_width)   sweeps it BOTH WAYS across the belt, widening
-//   the brim sideways without pushing it further ahead or behind.
-//
-// Neither is applied to the inner (hole) ring.
-ExPolygons belt_brim_region(const ExPolygons   &footprint_flat,
-                            bool                has_outer,
-                            bool                has_inner,
-                            coord_t             brim_width,
-                            coord_t             object_gap,
-                            coord_t             leading,
-                            coord_t             lateral,
-                            const BeltBrimFrame &frame);
-
-// Brim line positions for one layer band.
-//
-// Lines sit on a fixed lattice `u_anchor + k * pitch_u` so the on-belt spacing
-// between neighbouring brim lines is constant regardless of how the lattice
-// falls across layer bands.  Snapping to band centres instead would quantise
-// the spacing to whole bands and under-deposit by ~35% at 45 degrees.
-//
-// The band is half-open, [u_lo, u_hi), so every lattice point belongs to
-// exactly one band: none duplicated at a boundary, none dropped.  A band
-// narrower than the pitch simply yields nothing; a band much wider (shallow
-// tilt) yields several lines.
-std::vector<coord_t> belt_brim_line_positions(coord_t u_lo,
-                                              coord_t u_hi,
-                                              coord_t pitch_u,
-                                              coord_t u_anchor);
-
-// ---------------------------------------------------------------- pipeline
-
-// One brim-only layer printed BEFORE the object's first layer, carrying the
-// apron that has to be stuck to the belt ahead of the part.
-//
-// Deliberately not a Layer subclass.  A synthetic Layer would inherit id()
-// semantics that leak into initial-layer temperature selection, the spiral vase
-// probe, gradual interpolation, avoid-crossing-perimeters and cooling, all of
-// which key off Layer::id() == 0 or off a layer's regions.  A plain record
-// carries only what the emitter needs.
-//
-// `height` is the LAYER height, used for the Z move and ordering metadata only.
-// Each extrusion path inside `fills` carries its own height, equal to that
-// line's nozzle-to-belt clearance, which varies across the band.
-struct BeltBrimBand
-{
-    coordf_t                  print_z = 0.;
-    coordf_t                  height  = 0.;
-    // erBrim paths in the object's local slicing frame, untranslated.
-    ExtrusionEntityCollection fills;
-    // Footprint of those paths, for the first-layer convex hull / bbox.
-    ExPolygons                areas;
-};
-
-class PrintObject;
-
-// Generate the belt brim for one object: fills its per-object-layer bands and
-// its apron prologue.  No-op unless PrintObject::has_belt_brim().
-//
-// Runs inside posSupportMaterial rather than the brim step, because the prologue
-// print_z values must exist before ToolOrdering is built at psWipeTower.
-void make_belt_brim(PrintObject &object);
-
-} // namespace Slic3r
-
-#endif // slic3r_BeltBrim_hpp_
@@ -1,50 +0,0 @@
-#include "BeltGCode.hpp"
-#include "GCodeWriter.hpp"
-#include "GCode/BeltKinematics.hpp"
-#include "BeltTransform.hpp"
-#include "Print.hpp"
-#include "Point.hpp"
-#include "PrintConfig.hpp"
-#include "libslic3r.h"
-#include <cstdlib>
-
-namespace Slic3r {
-
-void BeltGCode::init_belt_writer(Print &print)
-{
-    // Axis remap and build volume max are set by base GCode after init_belt_writer
-    // returns; set_kinematics() replays them, so install order does not matter.
-    install_belt_kinematics(m_writer, print.config());
-    m_writer.set_force_normal_lift(true);
-}
-
-void BeltGCode::write_belt_header(GCodeOutputStream &file, const Print &print)
-{
-    const auto &full_cfg = print.full_print_config();
-    // Slicing rotation: the belt tilt (axis + angle) and the single source of truth
-    // for the physical tilt the G-code viewer uses to enable belt view.
-    file.write_format("; belt_slice_rotation = %s\n", full_cfg.opt_serialize("belt_slice_rotation").c_str());
-    file.write_format("; belt_slice_rotation_angle = %.1f\n", print.config().belt_slice_rotation_angle.value);
-    // Machine-frame transform: shear (tan) + scale (1/cos) derived from the belt
-    // tilt angle (or belt_frame_tilt_angle when decoupled).
-    file.write_format("; belt_frame_tilt_decouple = %d\n", print.config().belt_frame_tilt_decouple.value ? 1 : 0);
-    file.write_format("; belt_frame_tilt_angle = %.1f\n", print.config().belt_frame_tilt_angle.value);
-}
-
-void BeltGCode::on_set_origin(const PrintObject * /*obj*/, const Point & /*inst_shift*/)
-{
-    // Matches the per-instance Z-offset added in PrintObjectSlice.cpp: transform
-    // the origin through the belt pipeline so that back_transform(T * origin) =
-    // origin (correct machine position). The back_transform applied during
-    // G-code emission is the inverse of the forward transform.
-
-    // Adjust origin: transform through belt forward pipeline so that
-    // the back-transform correctly recovers model-space positions.
-    Transform3d T = BeltTransformPipeline::build_forward_transform(m_config);
-    Vec2d cur_origin = this->origin();
-    Vec3d origin3d(cur_origin.x(), cur_origin.y(), 0.);
-    Vec3d adjusted = T.linear() * origin3d;
-    this->set_origin(Vec2d(adjusted.x(), adjusted.y()));
-}
-
-} // namespace Slic3r
@@ -1,25 +0,0 @@
-#pragma once
-
-#include "GCode.hpp"
-#include "Point.hpp"
-#include "Print.hpp"
-
-namespace Slic3r {
-
-// Belt-printer-specific GCode export.
-//
-// Inherits from GCode and overrides virtual hooks to:
-// - Install a BeltKinematics on the GCodeWriter
-// - Write belt configuration to the G-code header
-// - Adjust the origin for global pre-slice transforms when switching instances
-// (Arc fitting is disabled for belt printers by BeltKinematics::supports_arc_moves(),
-//  which the base GCode::should_disable_arc_fitting() consults -- no override needed.)
-class BeltGCode : public GCode
-{
-protected:
-    void init_belt_writer(Print &print) override;
-    void write_belt_header(GCodeOutputStream &file, const Print &print) override;
-    void on_set_origin(const PrintObject *obj, const Point &inst_shift) override;
-};
-
-} // namespace Slic3r
@@ -1,433 +0,0 @@
-// ORCA-Belt: backend of the belt purge tower (the belt replacement for the
-// classic wipe/prime tower).
-//
-// Kept in its own translation unit so the belt-purge logic stays out of the way
-// of unrelated upstream changes to Print.cpp / PrintObjectSlice.cpp and carries
-// no regression risk for normal printers: none of these methods do anything
-// unless the print is a belt printer with the belt purge tower enabled.
-//
-//   Print::has_belt_purge_tower()      - is the belt purge tower active?
-//   Print::_align_belt_purge_layers()  - snap the prism's layer grid onto the
-//                                        printed objects' grid
-//   Print::_plan_belt_purge()          - route filament-change purging into the
-//                                        prism (flush-into-objects), no wipe tower
-//   PrintObject::belt_shift_layer_grid()      - shift a sliced layer grid
-//   PrintObject::belt_truncate_layers_above() - cancel the prism past the last swap
-//
-// (Declarations live in Print.hpp alongside the rest of the Print interface.)
-
-#include "Print.hpp"
-#include "PrintConfig.hpp"
-#include "Exception.hpp"
-#include "GCode/ToolOrdering.hpp"
-#include "Layer.hpp"
-#include "ExtrusionEntity.hpp"
-#include "ExtrusionEntityCollection.hpp"
-#include "I18N.hpp"
-#include "format.hpp"
-#include "LocalesUtils.hpp"
-#include "libslic3r.h"
-#include "BeltBrim.hpp"
-#include "PrintBase.hpp"
-
-#include <algorithm>
-#include <cmath>
-#include <limits>
-
-#include <boost/log/trivial.hpp>
-#include <cassert>
-#include <cstddef>
-#include <functional>
-#include <utility>
-#include <vector>
-
-namespace Slic3r {
-
-// Belt purge prism: purging after filament changes is routed into a sliced
-// prism object via the flush-into-objects machinery instead of a wipe tower.
-bool Print::has_belt_purge_tower() const
-{
-    // Its own purge-tower "type", gated by the belt-only enable_belt_purge_tower
-    // option (not the classic enable_prime_tower).
-    if (!(m_config.belt_printer.value
-          && m_config.enable_belt_purge_tower.value
-          && !m_config.spiral_mode.value
-          && m_config.filament_diameter.values.size() > 1))
-        return false;
-
-    return std::any_of(m_objects.begin(), m_objects.end(), [](const PrintObject *object) {
-        return object->config().belt_purge_tower_object.value;
-    });
-}
-
-// Belt mode: align ALL objects on the plate (the printed objects AND the purge
-// prism) onto one common layer grid, so the prism can absorb every toolchange.
-//
-// After belt slicing each object's layer print_z carries a per-object global z
-// offset (mesh-vertex-scan belt_z_shift + instance-Y-dependent terms), so
-// objects at different belt-Y positions get layer grids with DIFFERENT residues
-// (mod layer height). Purge marking looks absorbers up with
-// get_layer_at_printz(lt.print_z, EPSILON), so a toolchange on object B only
-// absorbs into the prism if the prism has a layer at B's print_z. Snapping only
-// the prism to one object therefore worked for a single (assembled) multi-color
-// object but failed with multiple separate objects — the prism could follow only
-// one grid, and toolchanges on the others went unabsorbed ("multiple layer
-// grids" warning).
-//
-// Fix: pick one reference grid (the tallest object) and shift every object onto
-// it. Each shift is at most half a layer height — a sub-100µm move along the
-// belt, the very same mechanism the per-object global_z_offset already uses, and
-// it keeps each object internally consistent (belt_shift_layer_grid moves the
-// object's layers, its support layers, and its belt floor together). Equal layer
-// height across objects is enforced by Print::validate(), so once residues match
-// every object steps on the same lattice {ref_offset + k*h} and every toolchange
-// layer coincides with a prism layer.
-void Print::_align_belt_purge_layers()
-{
-    PrintObject *prism = nullptr;
-    for (PrintObject *po : m_objects)
-        if (po->config().belt_purge_tower_object.value && !po->layers().empty()) {
-            prism = po;
-            break;
-        }
-    if (prism == nullptr || prism->layers().empty())
-        return;
-
-    const double h = prism->config().layer_height.value;
-    if (h <= EPSILON)
-        return;
-
-    // Grid residue of an object's layer grid: identical for all of an object's
-    // layers above the first since they step by h.
-    auto grid_offset = [h](const PrintObject *po) -> double {
-        if (po->layers().empty())
-            return 0.;
-        const double z = po->layers().front()->print_z;
-        return z - std::floor(z / h) * h; // in [0, h)
-    };
-
-    // Reference grid: the tallest non-prism object (proxy for the object with
-    // the most toolchange layers — minimizes how far the rest must move).
-    const PrintObject *ref     = nullptr;
-    double             ref_top = -std::numeric_limits<double>::max();
-    for (const PrintObject *po : m_objects) {
-        if (po->config().belt_purge_tower_object.value || po->layers().empty())
-            continue;
-        const double top = po->layers().back()->print_z;
-        if (top > ref_top) {
-            ref_top = top;
-            ref     = po;
-        }
-    }
-    if (ref == nullptr)
-        return;
-
-    const double ref_offset = grid_offset(ref);
-
-    // Snap every object (printed objects AND the prism) onto the reference grid.
-    for (PrintObject *po : m_objects) {
-        if (po->layers().empty())
-            continue;
-        double delta = ref_offset - grid_offset(po);
-        if (delta > 0.5 * h)
-            delta -= h;
-        else if (delta <= -0.5 * h)
-            delta += h;
-        po->belt_shift_layer_grid(delta); // no-op for the reference object (delta ~ 0)
-    }
-}
-
-// Belt mode replacement for _make_wipe_tower(): plan filament-change purging
-// into the belt purge prism (and any other flush_into_* object) using the
-// flush-into-objects machinery, without generating classic wipe tower G-code.
-// The toolchange itself is emitted by GCode::set_extruder() via the
-// change_filament_gcode macro; the overrides marked here make the new
-// filament's first extrusions land in the purge prism.
-void Print::_plan_belt_purge()
-{
-    m_wipe_tower_data.clear();
-
-    // psWipeTower may be invalidated without posSlice (for example after a
-    // filament-map or tool-ordering change). Restore a prism shortened by the
-    // previous plan so a newly higher toolchange can use its original layers.
-    for (PrintObject *po : m_objects)
-        if (po->config().belt_purge_tower_object.value)
-            po->belt_undo_purge_plan();
-
-    // Must run before ToolOrdering is built: LayerTools merge per-object layer
-    // print_z values, and the prism only absorbs purge where its (snapped)
-    // layers coincide with the toolchange layers.
-    this->_align_belt_purge_layers();
-
-    const unsigned int number_of_extruders = (unsigned int) m_config.filament_colour.values.size();
-
-    // No initial priming extrusions: there is no tower to prime on.
-    m_wipe_tower_data.tool_ordering = ToolOrdering(*this, (unsigned int) -1, false);
-    m_wipe_tower_data.tool_ordering.sort_and_build_data(*this, (unsigned int) -1, false);
-
-    if (m_wipe_tower_data.tool_ordering.empty() || m_wipe_tower_data.tool_ordering.last_extruder() == unsigned(-1))
-        throw Slic3r::SlicingError("The print is empty. The model is not printable with current print settings.");
-
-    // Is there any filament change at all? Not ToolOrdering::has_wipe_tower(): that reads the
-    // FIRST layer's flag, and on a belt the first layer may be a brim apron band, which carries
-    // neither object nor support and so never gets the flag even when the print changes filament.
-    {
-        bool         any_change = false;
-        unsigned int cur        = m_wipe_tower_data.tool_ordering.first_extruder();
-        for (const auto &lt : m_wipe_tower_data.tool_ordering.layer_tools())
-            for (const unsigned int e : lt.extruders)
-                if (e != cur) { any_change = true; cur = e; }
-        if (! any_change)
-            return;
-    }
-
-    this->throw_if_canceled();
-
-    // Flush volumes per filament pair, mirroring the generic wipe tower path:
-    // full flush matrix for single extruder multi material with purging enabled,
-    // plain prime volume otherwise.
-    std::vector<float> flush_matrix(cast<float>(
-        get_flush_volumes_matrix(m_config.flush_volumes_matrix.values, 0, m_config.nozzle_diameter.values.size())));
-    std::vector<std::vector<float>> wipe_volumes;
-    for (unsigned int i = 0; i < number_of_extruders; ++i)
-        wipe_volumes.push_back(std::vector<float>(flush_matrix.begin() + i * number_of_extruders,
-                                                  flush_matrix.begin() + (i + 1) * number_of_extruders));
-    const bool  use_flush_matrix = m_config.purge_in_prime_tower && m_config.single_extruder_multi_material;
-    const float flush_multiplier = (float) m_config.flush_multiplier.get_at(0);
-
-    // Cancel the purge prism early: pre-scan the tool ordering for the highest
-    // print_z that actually has a toolchange, then drop the prism's layers above
-    // it so the tower stops at the last color swap (saves filament/time). This
-    // MUST happen before the marking loop below: ensure_perimeters_infills_order
-    // force-overrides the prism's extrusions on every layer (it is a dedicated
-    // flush object), so truncating afterwards would leave dangling overrides
-    // pointing into deleted layers.
-    {
-        // The tool ordering covers the WHOLE print, and the prism is a printed
-        // object in it. Left unbounded, the scan below sees the prism's own
-        // toolchanges on layers above every model object -- the prism runs past
-        // them by design (ramp/height compensation at the tilted ends) -- so
-        // last_tc_z lands at the prism's own top and the truncation cancels
-        // nothing. The tower ends up justifying its own existence.
-        //
-        // Nothing above the tallest printed object can require a color change,
-        // so bound the scan there. On MCTEST5 that is 197 toolchanges spanning
-        // z=154.00..193.20 with the tallest object topping out at 153.80, i.e.
-        // 39.4 mm of tower that no swap ever needed.
-        // Support layers count too: on a belt they can extend above the object's
-        // own top, and a toolchange there is a real one.
-        double obj_top_z = -1.;
-        for (const PrintObject *po : m_objects) {
-            if (po->config().belt_purge_tower_object.value)
-                continue;
-            if (!po->layers().empty())
-                obj_top_z = std::max(obj_top_z, po->layers().back()->print_z);
-            if (!po->support_layers().empty())
-                obj_top_z = std::max(obj_top_z, po->support_layers().back()->print_z);
-        }
-
-        double       last_tc_z   = -1.;
-        unsigned int cur_ext     = m_wipe_tower_data.tool_ordering.first_extruder();
-        for (const auto &lt : m_wipe_tower_data.tool_ordering.layer_tools()) {
-            // layer_tools() is ordered by print_z ascending.
-            if (obj_top_z >= 0. && lt.print_z > obj_top_z + EPSILON)
-                break;
-            for (const unsigned int e : lt.extruders)
-                if (e != cur_ext) { last_tc_z = lt.print_z; cur_ext = e; }
-        }
-        // Deliberately NOT cancelling the prism outright when no object toolchange
-        // exists: belt_truncate_layers_above(0.) empties m_layers, and an object
-        // with zero layers is not something the rest of the pipeline expects. The
-        // GUI already declines to create a prism unless more than one filament is
-        // in use, so this case is a stale prism, not a hot path -- leave it whole
-        // rather than risk a zero-layer object.
-        if (last_tc_z >= 0.)
-            for (PrintObject *po : m_objects)
-                if (po->config().belt_purge_tower_object.value && !po->layers().empty()) {
-                    po->belt_truncate_layers_above(last_tc_z);
-                    break;
-                }
-    }
-
-    // The prism only absorbs purge at toolchange layers whose print_z coincides
-    // with one of its own layers.
-    PrintObject *prism_po = nullptr;
-    for (PrintObject *po : m_objects)
-        if (po->config().belt_purge_tower_object.value && !po->layers().empty()) { prism_po = po; break; }
-
-    float  total_leftover      = 0.f;
-    float  worst_layer_leftover = 0.f;
-    double worst_layer_z       = 0.;
-
-    unsigned int current_extruder_id = m_wipe_tower_data.tool_ordering.first_extruder();
-    for (auto &layer_tools : m_wipe_tower_data.tool_ordering.layer_tools()) {
-        float layer_leftover = 0.f;
-        for (const unsigned int extruder_id : layer_tools.extruders) {
-            if (extruder_id == current_extruder_id)
-                continue;
-            float volume_to_wipe = use_flush_matrix ?
-                wipe_volumes[current_extruder_id][extruder_id] * flush_multiplier :
-                (float) m_config.prime_volume;
-            float leftover = layer_tools.wiping_extrusions().mark_wiping_extrusions(*this, current_extruder_id, extruder_id,
-                                                                                    volume_to_wipe);
-            layer_leftover += leftover;
-            current_extruder_id = extruder_id;
-        }
-
-        // Plastic saving: drop the prism's fills that no toolchange on this layer
-        // claimed. At this point the prism's OVERRIDDEN fills are exactly the
-        // purge; the rest would print as solid infill in the prism's own filament
-        // for nothing -- which is the whole prism on a layer with no toolchange
-        // (141 of 692 layers on MCTEST5 before the truncation fix). Perimeters are
-        // left alone so the bar keeps a continuous wall along the belt.
-        //
-        // Non-destructive: the entities are stashed with their positions and put
-        // back by belt_restore_dropped_fills() at the top of the next plan. An
-        // earlier version deleted them outright, which broke replanning when a
-        // later tool ordering needed what this one had not claimed -- that is why
-        // it was removed rather than kept.
-        if (prism_po != nullptr) {
-            const auto &we = layer_tools.wiping_extrusions();
-            prism_po->belt_drop_unclaimed_fills(
-                prism_po->get_layer_at_printz(layer_tools.print_z, EPSILON),
-                [&we, prism_po](const ExtrusionEntity *e) { return we.is_entity_overridden(e, prism_po, 0); });
-        }
-
-        layer_tools.wiping_extrusions().ensure_perimeters_infills_order(*this);
-        if (layer_leftover > 0.f) {
-            total_leftover += layer_leftover;
-            if (layer_leftover > worst_layer_leftover) {
-                worst_layer_leftover = layer_leftover;
-                worst_layer_z        = layer_tools.print_z;
-            }
-        }
-        this->throw_if_canceled();
-    }
-
-    if (total_leftover > 1.f) {
-        this->active_step_add_warning(
-            PrintStateBase::WarningLevel::CRITICAL,
-            Slic3r::format(_u8L("The belt purge tower cannot absorb the full purge volume: %1% mm³ in total could not "
-                                "be purged (worst layer: %2% mm³ at height %3%). The print may show color bleeding. "
-                                "Increase the belt purge tower width, or reduce flushing volumes."),
-                           int(std::ceil(total_leftover)), int(std::ceil(worst_layer_leftover)),
-                           Slic3r::float_to_string_decimal_point(worst_layer_z, 2)));
-    }
-}
-
-// Belt mode: shift the sliced layer grid by delta. Mirrors the global_z_offset
-// application in slice() — layer print_z and belt_floor_z_shift move together
-// so belt floor clipping stays consistent with the shifted grid. Used by
-// Print::_align_belt_purge_layers() to snap the purge prism onto the printed
-// objects' layer grid; |delta| <= half a layer height, i.e. a sub-layer shift
-// of the prism along the belt.
-void PrintObject::belt_shift_layer_grid(double delta)
-{
-    if (std::abs(delta) < EPSILON)
-        return;
-    for (Layer *layer : m_layers)
-        layer->print_z += delta;
-    for (SupportLayer *layer : m_support_layers)
-        layer->print_z += delta;
-    // The brim's apron bands below the first layer carry their own print_z.
-    for (BeltBrimBand &band : m_belt_brim_prologue)
-        band.print_z += delta;
-    m_slicing_params.belt_floor_z_shift += delta;
-    // The grid stays shifted across a support-only or brim-only change (posSlice does
-    // not rerun), so everything slice() derived from it has to follow: the cached floor
-    // that update_slicing_parameters() restores, and the global offset the organic
-    // support layers and the adaptive infill octree are placed with. Left alone, the
-    // next alignment finds a delta of 0 and the floor and the supports sit up to half
-    // a layer off the grid, unlike a fresh slice.
-    if (m_belt_floor_z_shift_cache_valid)
-        m_belt_floor_z_shift_cached += delta;
-    m_belt_global_z_offset += delta;
-}
-
-// Belt mode: drop layers strictly above z (used to cancel the purge prism early
-// once there are no more toolchanges above z, so the tower stops at the last
-// color swap instead of wasting filament up the rest of the belt). Each layer's
-// cross-section is already sliced, so removing upper layers does not affect the
-// last toolchange's coverage. Deletes the Layer objects and clears the new top
-// layer's upper-layer link. Returns the number of layers removed.
-size_t PrintObject::belt_truncate_layers_above(coordf_t z)
-{
-    // A repeated plan always starts from the restored full layer set.
-    assert(m_belt_truncated_layers.empty());
-    size_t keep = m_layers.size();
-    while (keep > 0 && m_layers[keep - 1]->print_z > z + EPSILON)
-        --keep;
-    if (keep >= m_layers.size())
-        return 0;
-    const size_t removed = m_layers.size() - keep;
-    m_belt_truncated_layers.assign(m_layers.begin() + keep, m_layers.end());
-    m_layers.resize(keep);
-    if (!m_layers.empty())
-        m_layers.back()->upper_layer = nullptr;
-    return removed;
-}
-
-// Plastic saving on the purge prism: keep only the fills a toolchange claimed.
-//
-// Called per layer from _plan_belt_purge(), after the real-purge marking and
-// BEFORE ensure_perimeters_infills_order() -- that pass force-overrides every
-// remaining fill on the prism (it is a dedicated flush object), so afterwards
-// everything looks claimed and nothing could be distinguished.
-size_t PrintObject::belt_drop_unclaimed_fills(Layer *layer, const std::function<bool(const ExtrusionEntity*)> &claimed)
-{
-    if (layer == nullptr)
-        return 0;
-    size_t dropped = 0;
-    for (size_t ri = 0; ri < layer->regions().size(); ++ri) {
-        LayerRegion *lr = layer->get_region(ri);
-        auto        &ents = lr->fills.entities;
-        ExtrusionEntitiesPtr keep;
-        keep.reserve(ents.size());
-        for (size_t i = 0; i < ents.size(); ++i) {
-            if (claimed(ents[i])) {
-                keep.emplace_back(ents[i]);
-            } else {
-                // Stash with its original index so the restore is exact.
-                m_belt_dropped_fills.push_back(BeltDroppedFill{ layer, ri, i, ents[i] });
-                ++dropped;
-            }
-        }
-        ents = std::move(keep);
-    }
-    return dropped;
-}
-
-void PrintObject::belt_restore_dropped_fills()
-{
-    if (m_belt_dropped_fills.empty())
-        return;
-    // Ascending index per (layer, region): inserting in that order lands every
-    // entity back at its original position, because each insertion shifts only
-    // the entries after it, which are themselves still to be inserted.
-    std::stable_sort(m_belt_dropped_fills.begin(), m_belt_dropped_fills.end(),
-                     [](const BeltDroppedFill &a, const BeltDroppedFill &b) {
-                         if (a.layer != b.layer)           return a.layer < b.layer;
-                         if (a.region_idx != b.region_idx) return a.region_idx < b.region_idx;
-                         return a.index < b.index;
-                     });
-    for (const BeltDroppedFill &d : m_belt_dropped_fills) {
-        auto &ents = d.layer->get_region(d.region_idx)->fills.entities;
-        ents.insert(ents.begin() + std::min(d.index, ents.size()), d.entity);
-    }
-    m_belt_dropped_fills.clear();
-}
-
-void PrintObject::belt_restore_truncated_layers()
-{
-    if (m_belt_truncated_layers.empty())
-        return;
-
-    m_layers.insert(m_layers.end(), m_belt_truncated_layers.begin(), m_belt_truncated_layers.end());
-    m_belt_truncated_layers.clear();
-    for (size_t i = 0; i < m_layers.size(); ++i) {
-        m_layers[i]->lower_layer = i == 0 ? nullptr : m_layers[i - 1];
-        m_layers[i]->upper_layer = i + 1 < m_layers.size() ? m_layers[i + 1] : nullptr;
-    }
-}
-
-} // namespace Slic3r
@@ -1,83 +0,0 @@
-#include "BeltSliceStrategy.hpp"
-#include "Model.hpp"
-#include "BeltTransform.hpp"
-#include "Point.hpp"
-#include "PrintConfig.hpp"
-
-#include <limits>
-#include <algorithm>
-
-namespace Slic3r {
-
-void BeltSliceStrategy::apply_preslice_transforms(Transform3d           &trafo,
-                                                  const PrintConfig     &config,
-                                                  const ModelVolumePtrs &model_volumes,
-                                                  double                *out_belt_min_z)
-{
-    // 1. Belt rotation — the sole mesh-side belt transform (matching
-    //    BeltTransformPipeline::build_forward_transform).  Only active in
-    //    belt-printer mode.
-    bool has_rotation = false;
-    if (config.belt_printer.value) {
-        const Matrix3d rot = BeltTransformPipeline::build_rotation_matrix(config, &has_rotation);
-        if (has_rotation) {
-            Transform3d belt_xform = Transform3d::Identity();
-            belt_xform.linear() = rot;
-            trafo = belt_xform * trafo;
-        }
-    }
-
-    if (!has_rotation)
-        return;
-
-    // 2. Z-shift — detect if the mesh clips below the build plate after the
-    // transforms and lift it.  Each mesh vertex must be brought into object space
-    // via mv->get_matrix() before applying the full trafo (which is in object
-    // space).  Missing this on assemblies (where per-volume get_matrix() positions
-    // each volume within the object) would compute min_z against mesh-local vertex
-    // coordinates rather than object-space coordinates, so volumes translated along
-    // the slicer's Z axis would be silently excluded from the bound check.
-
-    //
-    // The lift is measured to the lowest point of the SUPPORT region, not of the
-    // mesh: the belt floor (z = shear * u in this rotated frame, u the from-axis
-    // coordinate) runs below every vertex, and under the leading end of an
-    // overhang it lies below the lowest vertex by up to the overhang's length
-    // times the shear.  Supports have to reach that floor, and every support
-    // generator works in layers at z >= 0, so z = 0 has to be the lowest floor
-    // point under the footprint.  The layers between it and the first vertex
-    // come out empty, which belt slicing already tolerates (the bottom corner
-    // of a tilted part is a point).  Vertices on the belt have z == floor, so
-    // for a part resting on the belt this is simply the floor at its leading
-    // extreme, less the frame margin (see BeltTransformPipeline::frame_margin).
-    BeltTransformPipeline::BeltFloorParams floor;
-    const bool has_floor = BeltTransformPipeline::floor_shear(config, floor);
-    double min_z = std::numeric_limits<double>::max();
-    for (const ModelVolume *mv : model_volumes) {
-        if (!mv->is_model_part()) continue;
-        Transform3d vol_trafo = trafo * mv->get_matrix();
-        const auto &its = mv->mesh().its;
-        for (const stl_vertex &v : its.vertices) {
-            Vec3d vm = v.cast<double>();
-            Vec3d pt = vol_trafo * vm;
-            min_z = std::min(min_z, pt.z());
-            if (has_floor)
-                min_z = std::min(min_z, floor.shear_factor * (floor.from_axis == 0 ? pt.x() : pt.y()));
-        }
-    }
-    if (has_floor && min_z != std::numeric_limits<double>::max())
-        min_z -= BeltTransformPipeline::frame_margin(floor);
-    const double z_shift_val = (min_z < 0. && min_z != std::numeric_limits<double>::max()) ? -min_z : 0.;
-    if (z_shift_val > 0.) {
-        Transform3d z_shift = Transform3d::Identity();
-        z_shift.matrix()(2, 3) = z_shift_val;
-        trafo = z_shift * trafo;
-    }
-    // out_belt_min_z is only meaningful in belt mode; the standalone-remap path
-    // never reported it.
-    if (out_belt_min_z && config.belt_printer.value) {
-        *out_belt_min_z = (min_z != std::numeric_limits<double>::max()) ? min_z : 0.;
-    }
-}
-
-} // namespace Slic3r
@@ -1,36 +0,0 @@
-#pragma once
-
-#include "libslic3r.h"
-#include "Point.hpp"
-#include "BeltTransform.hpp"
-#include "PrintConfig.hpp"
-#include "Model.hpp"
-
-namespace Slic3r {
-
-// Belt printer / pre-slice transform strategy.
-//
-// Composes, in order, the pre-slice mesh transforms applied before slicing:
-//   1. Pre-slice axis remap (standalone — works without belt mode)
-//   2. Belt rotation (the sole mesh-side belt transform; shear & scale are a
-//      g-code-side stage, see MachineFrameTransform)
-//   3. Per-object Z-shift that lifts the mesh above the build plate
-//
-// Isolates this belt/remap-specific logic from the generic slicing pipeline in
-// PrintObjectSlice.cpp.
-class BeltSliceStrategy
-{
-public:
-    // Apply the pre-slice remap + belt rotation + Z-shift to `trafo` in place.
-    // No-op when neither a remap nor a belt rotation is configured.
-    //
-    // out_belt_min_z (if non-null) receives the minimum mesh Z after the
-    // transforms, but only in belt-printer mode — the standalone-remap path
-    // never reported it.
-    static void apply_preslice_transforms(Transform3d           &trafo,
-                                          const PrintConfig     &config,
-                                          const ModelVolumePtrs &model_volumes,
-                                          double                *out_belt_min_z = nullptr);
-};
-
-} // namespace Slic3r
@@ -1,179 +0,0 @@
-#include "BeltTransform.hpp"
-#include "Model.hpp"
-#include "BoundingBox.hpp"
-#include "Config.hpp"
-#include "Geometry.hpp"
-#include "Point.hpp"
-#include "PrintConfig.hpp"
-#include "libslic3r.h"
-
-#include <limits>
-#include <algorithm>
-#include <cmath>
-#include <cstdlib>
-
-namespace Slic3r {
-
-// ---- Matrix builders ------------------------------------------------------
-
-Matrix3d BeltTransformPipeline::build_rotation_matrix(const PrintConfig &config, bool *has_rot_out)
-{
-    BeltRotationAxis axis = config.belt_slice_rotation.value;
-    double angle_deg = config.belt_slice_rotation_angle.value;
-    bool active = axis != BeltRotationAxis::None && std::abs(angle_deg) > EPSILON;
-    if (has_rot_out) *has_rot_out = active;
-    if (!active)
-        return Matrix3d::Identity();
-    double angle_rad = Geometry::deg2rad(angle_deg);
-    Vec3d unit_axis;
-    switch (axis) {
-    case BeltRotationAxis::X: unit_axis = Vec3d::UnitX(); break;
-    case BeltRotationAxis::Y: unit_axis = Vec3d::UnitY(); break;
-    case BeltRotationAxis::Z: unit_axis = Vec3d::UnitZ(); break;
-    default:                  return Matrix3d::Identity();
-    }
-    return Eigen::AngleAxisd(angle_rad, unit_axis).toRotationMatrix();
-}
-
-Transform3d BeltTransformPipeline::build_forward_transform(const PrintConfig &config)
-{
-    // Mesh-side belt transform: the rotation. (Shear & scale are a g-code-side
-    // stage, not part of the mesh transform.)
-    Transform3d combined = Transform3d::Identity();
-    combined.linear() = build_rotation_matrix(config);
-    return combined;
-}
-
-// ---- Belt floor parameters ------------------------------------------------
-
-// Shared implementation for both PrintConfig and DynamicPrintConfig.
-// Template avoids duplicating the math for the two config types.
-namespace {
-
-// Belt floor in the rotated slicer frame: the image of z_machine = 0 under R.
-//   R(+α, X): point (·, y, 0) → (·, cos α · y, sin α · y) ⇒ z = tan(α) · y_s
-//   R(+α, Y): point (x, ·, 0) → (cos α · x, ·, -sin α · x) ⇒ z = -tan(α) · x_s
-//   R(+α, Z): point (·, ·, 0) → (·, ·, 0); no tilt → no floor
-void belt_floor_shear(BeltRotationAxis rot_axis, double angle_rad, BeltTransformPipeline::BeltFloorParams &out)
-{
-    double sin_a = std::sin(angle_rad), cos_a = std::cos(angle_rad);
-    switch (rot_axis) {
-    case BeltRotationAxis::X:
-        out.shear_factor = (std::abs(cos_a) > EPSILON) ?  sin_a / cos_a : 0.;
-        out.from_axis    = 1; // Y
-        break;
-    case BeltRotationAxis::Y:
-        out.shear_factor = (std::abs(cos_a) > EPSILON) ? -sin_a / cos_a : 0.;
-        out.from_axis    = 0; // X
-        break;
-    case BeltRotationAxis::Z:
-    default:
-        out.shear_factor = 0.0;
-        out.from_axis    = 1;
-        break;
-    }
-}
-
-// Z of the belt floor directly under a point of the rotated (unshifted) frame.
-inline double belt_floor_z(const BeltTransformPipeline::BeltFloorParams &fp, const Vec3d &pt)
-{
-    return fp.shear_factor * (fp.from_axis == 0 ? pt.x() : pt.y());
-}
-
-
-template<typename Config>
-BeltTransformPipeline::BeltHeightResult compute_belt_height_and_floor_impl(
-    const Config &config, const BoundingBoxf3 &bb, double original_height)
-{
-    BeltTransformPipeline::BeltHeightResult result;
-    result.object_height = original_height;
-
-    // Extract the mesh rotation from config (the sole mesh-side belt transform).
-    BeltRotationAxis rot_axis;
-    double           rot_angle;
-
-    if constexpr (std::is_same_v<Config, PrintConfig>) {
-        rot_axis  = config.belt_slice_rotation.value;
-        rot_angle = config.belt_slice_rotation_angle.value;
-    } else {
-        // DynamicPrintConfig path
-        auto get_float = [&](const char *key) {
-            auto *opt = config.template option<ConfigOptionFloat>(key);
-            return opt ? opt->value : 0.0;
-        };
-        auto get_rot_axis = [&](const char *key) {
-            auto *opt = config.template option<ConfigOptionEnum<BeltRotationAxis>>(key);
-            return opt ? opt->value : BeltRotationAxis::None;
-        };
-        rot_axis  = get_rot_axis("belt_slice_rotation");
-        rot_angle = get_float("belt_slice_rotation_angle");
-    }
-
-    bool has_rotation = rot_axis != BeltRotationAxis::None && std::abs(rot_angle) > EPSILON;
-    if (!has_rotation)
-        return result;
-
-    // Rotation path: sweep the 8 bbox corners through R to get the rotated height,
-    // then derive the belt floor (the image of machine-Z = 0 under R).
-    double angle_rad = Geometry::deg2rad(rot_angle);
-    Vec3d unit_axis;
-    switch (rot_axis) {
-    case BeltRotationAxis::X: unit_axis = Vec3d::UnitX(); break;
-    case BeltRotationAxis::Y: unit_axis = Vec3d::UnitY(); break;
-    case BeltRotationAxis::Z: unit_axis = Vec3d::UnitZ(); break;
-    default:                  unit_axis = Vec3d::UnitX(); break;
-    }
-    Matrix3d R = Eigen::AngleAxisd(angle_rad, unit_axis).toRotationMatrix();
-    belt_floor_shear(rot_axis, angle_rad, result.floor_params);
-    // The slicing frame starts at the lowest point of the support region: the
-    // lowest belt-floor point under the footprint, not the lowest vertex.  The
-    // belt under the leading end of an overhang lies below every vertex of the
-    // part, and supports have to be able to reach it (see
-    // BeltSliceStrategy::apply_preslice_transforms for the exact vertex-scan
-    // counterpart of this bbox estimate).
-    double min_rz = std::numeric_limits<double>::max();
-    double max_rz = std::numeric_limits<double>::lowest();
-    for (int i = 0; i < 8; ++i) {
-        Vec3d c((i & 1) ? bb.max.x() : bb.min.x(),
-                (i & 2) ? bb.max.y() : bb.min.y(),
-                (i & 4) ? bb.max.z() : bb.min.z());
-        Vec3d  rc = R * c;
-        double z  = rc.z();
-        min_rz = std::min(min_rz, z);
-        max_rz = std::max(max_rz, z);
-        min_rz = std::min(min_rz, belt_floor_z(result.floor_params, rc));
-    }
-    min_rz -= BeltTransformPipeline::frame_margin(result.floor_params);
-    result.object_height = max_rz - min_rz;
-
-    result.floor_params.z_shift = bb.min.z() + ((min_rz < 0.) ? -min_rz : 0.);
-
-    return result;
-}
-
-} // anonymous namespace
-
-BeltTransformPipeline::BeltHeightResult BeltTransformPipeline::compute_belt_height_and_floor(
-    const PrintConfig &config, const BoundingBoxf3 &bbox, double original_height)
-{
-    return compute_belt_height_and_floor_impl(config, bbox, original_height);
-}
-
-BeltTransformPipeline::BeltHeightResult BeltTransformPipeline::compute_belt_height_and_floor(
-    const DynamicPrintConfig &config, const BoundingBoxf3 &bbox, double original_height)
-{
-    return compute_belt_height_and_floor_impl(config, bbox, original_height);
-}
-
-bool BeltTransformPipeline::floor_shear(const PrintConfig &config, BeltFloorParams &out)
-{
-    out = BeltFloorParams{};
-    const BeltRotationAxis rot_axis  = config.belt_slice_rotation.value;
-    const double           rot_angle = config.belt_slice_rotation_angle.value;
-    if (rot_axis == BeltRotationAxis::None || std::abs(rot_angle) <= EPSILON)
-        return false;
-    belt_floor_shear(rot_axis, Geometry::deg2rad(rot_angle), out);
-    return std::abs(out.shear_factor) > EPSILON;
-}
-
-} // namespace Slic3r
@@ -1,143 +0,0 @@
-#pragma once
-
-#include "libslic3r.h"
-#include "Point.hpp"
-#include "BoundingBox.hpp"
-#include "PrintConfig.hpp"
-#include "Geometry.hpp"
-#include "Config.hpp"
-
-#include <cmath>
-
-namespace Slic3r {
-
-class ModelObject;
-
-// Shared belt-printer transform math.
-//
-// The pre-slice pipeline applied in PrintObjectSlice.cpp is:
-//     trafo_out = z_shift * rotation * trafo_in
-//
-// Rotation is the sole mesh-side belt transform; shear & scale are applied
-// to the g-code instead (see MachineFrameTransform).  This class provides the
-// building blocks so every call site uses the same implementation.  z_shift is
-// object-dependent (computed from mesh vertex bounds) and is NOT included in
-// build_forward_transform().  The machine-frame shear/scale is derived directly
-// from the tilt angle in MachineFrameTransform and no longer lives here.
-//
-// Design note: this mesh-rotation approach replaced an earlier pre-shear
-// method (now removed).  While that initial pre-shear method was instrumental
-// in getting belt printer slicing off the ground in the first place, its place is
-// in the past.  A big thank you goes to the Unlayered3D team, who recommended 
-// switching to a pre-slice rotation stage instead.  Doing so keeps the slicing 
-// operation isometric — no distortion of the sliced geometry — while the 
-// non-orthogonal machine-axis compensation is confined to a g-code-side shear/scale
-// derived from the same tilt angle.
-// 
-// This fixed a number of issues, including several issues noticed by hotcubcar
-// regarding adaptive infills not working, gyroid becoming anisotropic, and more 
-// that were all mostly resolved as a result of the switch.
-// 
-// This also means that the pre-slice rotation transform methodology can be used 
-// more cleanly on non-belt printers.
-// - HarrierPigeon (Joseph Robertson)
-
-class BeltTransformPipeline
-{
-public:
-    // ---- Identity checks --------------------------------------------------
-
-    // Whether the G-code axis remap applies at all. The remap fields are only
-    // offered in the belt printer group, so a value left in a profile must not
-    // change a non-belt print: with belt mode off every belt-only key is a no-op.
-    // This is the one place to widen if a non-belt use ever needs them.
-    static bool axis_remap_enabled(const PrintConfig &config) { return config.belt_printer.value; }
-
-    static bool has_rotation(const PrintConfig &config)
-    {
-        return config.belt_slice_rotation.value != BeltRotationAxis::None &&
-               std::abs(config.belt_slice_rotation_angle.value) > EPSILON;
-    }
-
-    // Physical belt tilt derived from the slicing rotation — the single source of
-    // truth for bed rendering, support gravity tilt and the bed-exclusion
-    // projection.  Returns the tilt magnitude in degrees split onto the X and Y
-    // build-plate tilt axes according to the rotation axis:
-    //   rotation about X  → tilt_x = angle   (gantry tilts in the YZ plane)
-    //   rotation about Y  → tilt_y = angle   (gantry tilts in the XZ plane)
-    //   rotation about Z / None → no tilt    (in-plane spin doesn't tilt the belt)
-    // The magnitude uses abs(angle) so a negative rotation still reports a positive
-    // physical tilt.
-    struct PhysicalTilt { double tilt_x_deg = 0.; double tilt_y_deg = 0.; };
-
-    static PhysicalTilt physical_tilt(BeltRotationAxis axis, double angle_deg)
-    {
-        PhysicalTilt t;
-        double mag = std::abs(angle_deg);
-        switch (axis) {
-        case BeltRotationAxis::X: t.tilt_x_deg = mag; break;
-        case BeltRotationAxis::Y: t.tilt_y_deg = mag; break;
-        default: break; // Z / None: no physical tilt
-        }
-        return t;
-    }
-
-    static PhysicalTilt physical_tilt(const PrintConfig &config)
-    {
-        return physical_tilt(config.belt_slice_rotation.value,
-                             config.belt_slice_rotation_angle.value);
-    }
-
-    // ---- Matrix builders --------------------------------------------------
-
-    // Build the 3x3 rotation matrix from belt_slice_rotation* config.
-    // Returns Identity if rotation axis is None or angle is ~0.
-    // Also sets has_rot_out if non-null.
-    static Matrix3d build_rotation_matrix(const PrintConfig &config, bool *has_rot_out = nullptr);
-
-    // Forward transform (the rotation) — the mesh-side belt transform that
-    // BeltSliceStrategy applies and BeltBackTransform inverts.
-    // Does NOT include the per-object Z-shift.
-    static Transform3d build_forward_transform(const PrintConfig &config);
-
-    // ---- Belt floor parameters --------------------------------------------
-
-    struct BeltFloorParams {
-        double shear_factor = 0.0;
-        int    from_axis    = 1;
-        double z_shift      = 0.0;
-    };
-
-    // Shear factor and from-axis of the belt floor in the rotated slicer frame
-    // (z_floor = shear_factor * u, u = the from-axis coordinate), for the
-    // rotation the config selects.  z_shift is left at 0.  Returns false (and
-    // zero shear) when the config has no tilt.
-    static bool floor_shear(const PrintConfig &config, BeltFloorParams &out);
-
-    // How far below the lowest belt-floor point under the footprint the slicing
-    // frame starts, in slicing Z.  A support column meeting the belt is wider at
-    // its base than at its tip, so under a leading overhang the base reaches ahead
-    // of the part along the belt, and the layers that trim it to the belt plane
-    // lie below that lowest point: 10 mm along the belt.
-    static double frame_margin(const BeltFloorParams &fp) { return 10. * std::abs(fp.shear_factor); }
-
-    // Result of computing belt height + floor params.
-    struct BeltHeightResult {
-        double          object_height;  // Effective object height after shear/scale
-        BeltFloorParams floor_params;
-    };
-
-    // Compute effective object height and belt floor parameters from config
-    // and the object's bounding box.  original_height is the input height
-    // (bb.size().z() or model_object.max_z()).
-    static BeltHeightResult compute_belt_height_and_floor(
-        const PrintConfig &config, const BoundingBoxf3 &bbox,
-        double original_height);
-
-    // Overload for DynamicPrintConfig (used by static slicing_parameters).
-    static BeltHeightResult compute_belt_height_and_floor(
-        const DynamicPrintConfig &config, const BoundingBoxf3 &bbox,
-        double original_height);
-};
-
-} // namespace Slic3r
@@ -474,9 +474,7 @@ static ExPolygons outer_inner_brim_area(const Print& print,
            const bool         use_brim_ears = object->config().brim_type == btPainted;
            const bool         use_inner_brim_ears = (use_auto_brim_ears || use_brim_ears) && !object->config().brim_ears_outer_only.value;
            const bool         has_inner_brim = brim_type == btInnerOnly || brim_type == btOuterAndInner || use_inner_brim_ears;
-            // btLeadingEdgeOnly is a belt-printer mode; on a flat bed there is no leading
-            // edge, so it degrades to an ordinary outer brim rather than silently to none.
-            const bool         has_outer_brim = brim_type == btOuterOnly || brim_type == btOuterAndInner || brim_type == btAutoBrim || brim_type == btLeadingEdgeOnly || use_auto_brim_ears || use_brim_ears;
+            const bool         has_outer_brim = brim_type == btOuterOnly || brim_type == btOuterAndInner || brim_type == btAutoBrim || use_auto_brim_ears || use_brim_ears;
            coord_t            ear_detection_length = scale_(object->config().brim_ears_detection_length.value);
            coordf_t           brim_ears_max_angle = object->config().brim_ears_max_angle.value;
            //ORCA: Select brim base slices from EFC-compensated outline when enabled.
@@ -891,17 +889,6 @@ void make_brim(const Print& print, PrintTryCancel try_cancel, Polygons& islands_
    std::vector<unsigned int>& printExtruders,
    std::map<ObjectInstanceID, ExPolygons>* objectBrimAreasByInstanceOut)
 {
-    // Belt printers never use the flat plate brim.
-    //
-    // With a tilted belt the brim has to be laid onto the belt plane over many layers,
-    // which BeltBrim.cpp does during posSupportMaterial.  With an untilted belt this
-    // could in principle fall through and produce an ordinary brim, but it would never
-    // reach the G-code: the plate brim is emitted out of skirt_brim_groups(), which
-    // _make_skirt() builds, and that returns early for every belt printer.  Running the
-    // generator anyway would just burn time on geometry nobody prints.
-    if (print.config().belt_printer.value)
-        return;
-
    std::map<ObjectInstanceID, ExPolygons> brimAreaMap;
    Flow                 flow = print.brim_flow();
    ExPolygons           islands_area_ex = outer_inner_brim_area(print,
@@ -84,7 +84,7 @@ public:
    indexed_triangle_set        bounding_mesh(bool scale=true) const;

    // Center of the print bed, unscaled.
-    Vec2d                       bed_center()        const { return get_extents(m_bed_shape).center(); }
+    Vec2d                       bed_center()        const { return to_2d(m_bboxf.center()); }
    // Convex hull of polygon(), scaled.
    const Polygon&              convex_hull()       const { return m_convex_hull; }
    // Smallest enclosing circle of polygon(), scaled.
@@ -85,15 +85,6 @@ set(lisbslic3r_sources
    BoundingBox.hpp
    BridgeDetector.cpp
    BridgeDetector.hpp
-    BeltBrim.cpp
-    BeltBrim.hpp
-    BeltGCode.cpp
-    BeltGCode.hpp
-    BeltPurge.cpp
-    BeltSliceStrategy.cpp
-    BeltSliceStrategy.hpp
-    BeltTransform.cpp
-    BeltTransform.hpp
    Brim.cpp
    BrimEarsPoint.hpp
    Brim.hpp
@@ -241,14 +232,6 @@ set(lisbslic3r_sources
    GCode/AdaptivePAProcessor.hpp
    GCode/AvoidCrossingPerimeters.cpp
    GCode/AvoidCrossingPerimeters.hpp
-    GCode/BeltBackTransform.cpp
-    GCode/BeltBackTransform.hpp
-    GCode/MachineFrameTransform.cpp
-    GCode/MachineFrameTransform.hpp
-    GCode/BeltKinematics.cpp
-    GCode/BeltKinematics.hpp
-    GCode/MachineKinematics.cpp
-    GCode/MachineKinematics.hpp
    GCode/ConflictChecker.cpp
    GCode/ConflictChecker.hpp
    GCode/CoolingBuffer.cpp
@@ -473,8 +456,6 @@ set(lisbslic3r_sources
    SlicingAdaptive.hpp
    Slicing.cpp
    Slicing.hpp
-    Support/BeltFloorContext.cpp
-    Support/BeltFloorContext.hpp
    Support/SupportCommon.cpp
    Support/SupportCommon.hpp
    Support/SupportLayer.hpp
@@ -23,11 +23,6 @@ enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor };

 } // namespace Slic3r

-// import these wherever we're included
-using Slic3r::jtMiter;
-using Slic3r::jtRound;
-using Slic3r::jtSquare;
-
 namespace Slic3r {

 static constexpr const float                        ClipperSafetyOffset     = 10.f;
@@ -2851,7 +2851,6 @@ bool is_patch_inside_of_model(const SurfacePatch &patch,
 /// <returns>shape point index</returns>
 uint32_t get_shape_point_index(const CutAOI &cut, const CutMesh &model);

-using PatchNumber = CutMesh::Property_map<FI, size_t>;
 /// <summary>
 /// Separate triangles singned with number n
 /// </summary>
@@ -403,11 +403,6 @@ inline void translate(ExPolygons &expolys, const Point &p) {
        expoly.translate(p);
 }

-inline void translate(Polygons &polys, const Point &p) {
-    for (Polygon &poly : polys)
-        poly.translate(p);
-}
-
 inline void polygons_append(Polygons &dst, const ExPolygon &src) 
 { 
    dst.reserve(dst.size() + src.holes.size() + 1);
@@ -32,8 +32,6 @@

 // #define DEBUG_FUZZY

-using namespace Slic3r;
-
 namespace Slic3r::Feature::FuzzySkin {

 // Produces a random value between 0 and 1. Thread-safe.
@@ -122,8 +122,6 @@ Polylines get_polylines(const ScalarField& sf, const double tolerance = SCALED_E

 namespace Slic3r {

-using namespace std;
-
 void FillTpmsFK::_fill_surface_single(const FillParams&              params,
                                      unsigned int                   thickness_layers,
                                      const std::pair<float, Point>& direction,
@@ -25,7 +25,6 @@
 #include <boost/property_tree/xml_parser.hpp>
 #include <vector>
 #include <utility>
-namespace pt = boost::property_tree;

 #include <boost/filesystem/operations.hpp>
 #include <boost/algorithm/string.hpp>
@@ -1041,10 +1041,10 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
            void _stop_object_xml_parser(const std::string& msg = std::string())
            {
                assert(! obj_parse_error);
+                assert(obj_parse_error_message.empty());
                assert(object_xml_parser != nullptr);
                obj_parse_error = true;
-                if (! msg.empty() || obj_parse_error_message.empty())   // a handler may have set the message already
-                    obj_parse_error_message = msg;
+                obj_parse_error_message = msg;
                XML_StopParser(object_xml_parser, false);
            }

@@ -3901,18 +3901,11 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
    {
        // appends the vertex coordinates
        // missing values are set equal to ZERO
-        if (m_curr_object) {
-            const Vec3f v(m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, X_ATTR),
-                          m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Y_ATTR),
-                          m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Z_ATTR));
-            // A non-finite coordinate ("nan", "inf") used to be accepted and crashed
-            // qhull in ModelVolume's convex hull while the file was still loading. Refuse the file.
-            if (! v.allFinite()) {
-                _stop_xml_parser("Invalid vertex coordinate: not a finite number");
-                return true;   // the parser is stopped; returning false would overwrite the message
-            }
-            m_curr_object->geometry.vertices.emplace_back(v);
-        }
+        if (m_curr_object)
+            m_curr_object->geometry.vertices.emplace_back(
+                m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, X_ATTR),
+                m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Y_ATTR),
+                m_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Z_ATTR));
        return true;
    }

@@ -5202,11 +5195,6 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
                    }
                }

-                for (const Vec3f &v : sub_object->geometry.vertices)
-                    if (! v.allFinite()) {   // Qhull cannot take a NaN vertex
-                        add_error("invalid (non-finite) vertex in object " + std::to_string(sub_object->id));
-                        return false;
-                    }
                its.vertices.assign(sub_object->geometry.vertices.begin(), sub_object->geometry.vertices.end());

                // BBS
@@ -5720,18 +5708,11 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
    {
        // appends the vertex coordinates
        // missing values are set equal to ZERO
-        if (current_object) {
-            const Vec3f v(object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, X_ATTR),
-                          object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Y_ATTR),
-                          object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Z_ATTR));
-            // See _BBS_3MF_Importer::_handle_start_vertex: a non-finite coordinate
-            // crashed qhull while the file loaded. The dispatcher stops this parser on `false`.
-            if (! v.allFinite()) {
-                obj_parse_error_message = "Invalid vertex coordinate: not a finite number";
-                return false;
-            }
-            current_object->geometry.vertices.emplace_back(v);
-        }
+        if (current_object)
+            current_object->geometry.vertices.emplace_back(
+                object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, X_ATTR),
+                object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Y_ATTR),
+                object_unit_factor * bbs_get_attribute_value_float(attributes, num_attributes, Z_ATTR));
        return true;
    }

@@ -29,13 +29,10 @@
 #include "libslic3r.h"
 #include "I18N.hpp"
 #include "GCode.hpp"
-#include <cstdio>
 #include "Exception.hpp"
 #include "LifecycleEvents.hpp"
 #include "ExtrusionEntity.hpp"
 #include "EdgeGrid.hpp"
-#include "BeltTransform.hpp"
-#include "Geometry.hpp"
 #include "Geometry/ConvexHull.hpp"
 #include "GCode/PrintExtents.hpp"
 #include "GCode/Thumbnails.hpp"
@@ -59,7 +56,6 @@
 #include <boost/filesystem/operations.hpp>
 #include <boost/filesystem/path.hpp>
 #include <cfloat>
-#include <climits>
 #include <cmath>
 #include <cstdio>
 #include <cstdint>
@@ -106,7 +102,6 @@
 #include <vector>
 #include "calib.hpp"
 #include "libslic3r_version.h"
-#include "GCode/BeltKinematics.hpp"
 // Intel redesigned some TBB interface considerably when merging TBB with their oneAPI set of libraries, see GH #7332.
 // We are using quite an old TBB 2017 U7. Before we update our build servers, let's use the old API, which is deprecated in up to date TBB.
 #if ! defined(TBB_VERSION_MAJOR)
@@ -2222,7 +2217,7 @@ void GCode::PlaceholderParserIntegration::validate_output_vector_variables()

 // Collect pairs of object_layer + support_layer sorted by print_z.
 // object_layer & support_layer are considered to be on the same print_z, if they are not further than EPSILON.
-std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObject& object, bool skip_empty_first_layer)
+std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObject& object)
 {
    std::vector<GCode::LayerToPrint> layers_to_print;
    layers_to_print.reserve(object.layers().size() + object.support_layers().size());
@@ -2246,19 +2241,10 @@ std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObjec
    std::vector<std::pair<double, double>> warning_ranges;

    // Pair the object layers with the support layers by z.
-    //
-    // Belt printers add a third stream: brim apron bands, which sit on the belt AHEAD of
-    // the part and so print below the object's first layer.  They are merged here rather
-    // than pushed as standalone records, because a band's print_z can coincide with a
-    // support layer of this same object - and the print-wide merge downstream keeps only
-    // one record per object per z, so a standalone band would be silently overwritten.
    size_t idx_object_layer = 0;
    size_t idx_support_layer = 0;
-    size_t idx_brim_band = 0;
-    const auto &brim_bands = object.belt_brim_prologue();   // ordered by ascending print_z
    const LayerToPrint* last_extrusion_layer = nullptr;
-    while (idx_object_layer < object.layers().size() || idx_support_layer < object.support_layers().size()
-        || idx_brim_band < brim_bands.size()) {
+    while (idx_object_layer < object.layers().size() || idx_support_layer < object.support_layers().size()) {
        LayerToPrint layer_to_print;
        double print_z_min = std::numeric_limits<double>::max();
        if (idx_object_layer < object.layers().size()) {
@@ -2271,11 +2257,6 @@ std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObjec
            print_z_min = std::min(print_z_min, layer_to_print.support_layer->print_z);
        }

-        if (idx_brim_band < brim_bands.size()) {
-            layer_to_print.belt_brim_band = &brim_bands[idx_brim_band++];
-            print_z_min = std::min(print_z_min, layer_to_print.belt_brim_band->print_z);
-        }
-
        if (layer_to_print.object_layer && layer_to_print.object_layer->print_z > print_z_min + EPSILON) {
            layer_to_print.object_layer = nullptr;
            --idx_object_layer;
@@ -2286,29 +2267,16 @@ std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObjec
            --idx_support_layer;
        }

-        if (layer_to_print.belt_brim_band && layer_to_print.belt_brim_band->print_z > print_z_min + EPSILON) {
-            layer_to_print.belt_brim_band = nullptr;
-            --idx_brim_band;
-        }
-
        layer_to_print.original_object = &object;
        layers_to_print.push_back(layer_to_print);

        bool has_extrusions = (layer_to_print.object_layer && layer_to_print.object_layer->has_extrusions())
-            || (layer_to_print.support_layer && layer_to_print.support_layer->has_extrusions())
-            || (layer_to_print.belt_brim_band && ! layer_to_print.belt_brim_band->fills.empty());
+            || (layer_to_print.support_layer && layer_to_print.support_layer->has_extrusions());

        // Check that there are extrusions on the very first layer. The case with empty
        // first layer may result in skirt/brim in the air and maybe other issues.
-        // Skip this check for belt printers.  The shear transform tilts the
-        // model so the first horizontal layer plane intersects only a thin
-        // sliver of the model (width ≈ first_layer_height / shear_factor).
-        // This sliver is often narrower than the nozzle diameter, producing
-        // zero perimeters and an empty first layer — which is expected, not
-        // an error.  In global shear mode the object may also start above
-        // Z=0 on the tilted belt surface.
        if (layers_to_print.size() == 1u) {
-            if (!has_extrusions && !skip_empty_first_layer)
+            if (!has_extrusions)
                throw Slic3r::SlicingError(_(L("One object has an empty first layer and can't be printed. Please Cut the bottom or enable supports.")), object.id().id);
        }

@@ -2339,32 +2307,14 @@ std::vector<GCode::LayerToPrint> GCode::collect_layers_to_print(const PrintObjec
                + std::max(0., extra_gap);
            // Negative support_contact_z is not taken into account, it can result in false positives in cases

-            if (has_extrusions && layer_to_print.print_z() > maximal_print_z + 2. * EPSILON) {
-                // Belt printers: a *leading* empty range (no prior extrusion layer, so the
-                // gap starts at Z=0) is not a floating object — it is just the belt lead-in.
-                // The part rests on the conveyor as it advances, so the first material can
-                // legitimately appear well above Z=0. This empty-layer check assumes a fixed
-                // bed, where material with nothing below it is unprintable; that assumption
-                // does not hold on a belt for the lead-in. Suppress only this leading case,
-                // and keep flagging genuine *internal* gaps (which on a belt may still be an
-                // over-angle overhang that would print into air).
-                const bool belt_leading_gap = object.print()->config().belt_printer.value
-                                           && last_extrusion_layer == nullptr;
-                if (!belt_leading_gap)
-                    warning_ranges.emplace_back(std::make_pair((last_extrusion_layer ? last_extrusion_layer->print_z() : 0.), layers_to_print.back().print_z()));
-            }
+            if (has_extrusions && layer_to_print.print_z() > maximal_print_z + 2. * EPSILON)
+                warning_ranges.emplace_back(std::make_pair((last_extrusion_layer ? last_extrusion_layer->print_z() : 0.), layers_to_print.back().print_z()));
        }
        // Remember last layer with extrusions.
        if (has_extrusions)
            last_extrusion_layer = &layers_to_print.back();
    }

-    // ORCA-Belt: objects print at their position along the belt, so the first
-    // extrusions legitimately start far above Z=0. Drop the spurious
-    // "empty layers from the bed" range while keeping genuine mid-print gaps.
-    if (skip_empty_first_layer && !warning_ranges.empty() && warning_ranges.front().first == 0.)
-        warning_ranges.erase(warning_ranges.begin());
-
    if (! warning_ranges.empty()) {
        std::string warning;
        size_t i = 0;
@@ -2399,7 +2349,7 @@ std::vector<std::pair<coordf_t, std::vector<GCode::LayerToPrint>>> GCode::collec

    for (size_t i = 0; i < print.objects().size(); ++i) {
        try {
-            per_object[i] = collect_layers_to_print(*print.objects()[i], print.config().belt_printer.value);
+            per_object[i] = collect_layers_to_print(*print.objects()[i]);
        } catch (const Slic3r::SlicingError &e) {
            errors.push_back(e);
            continue;
@@ -3129,45 +3079,9 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato

    m_fan_mover.release();
    m_ordering_cache.clear();
-
-    // Belt printer: initialize belt-specific writer via virtual hook.
-    this->init_belt_writer(print);
+    
    m_writer.set_is_bbl_machine(is_bbl_printers);

-    // G-code axis remap. Only belt printers get one (see
-    // BeltTransformPipeline::axis_remap_enabled): a remap left in a profile must
-    // not change a non-belt print. Sync the writer's remap state to the current
-    // export UNCONDITIONALLY — even at the identity mapping (0,1,2) — so a reused
-    // writer never retains a stale non-identity mapping from a prior export.
-    // has_axis_remap() returns false at identity, so identity/default output stays
-    // unchanged.
-    {
-        const bool remap = BeltTransformPipeline::axis_remap_enabled(print.config());
-        int rx = remap ? int(print.config().gcode_remap_x.value) : int(RemapAxis::PosX);
-        int ry = remap ? int(print.config().gcode_remap_y.value) : int(RemapAxis::PosY);
-        int rz = remap ? int(print.config().gcode_remap_z.value) : int(RemapAxis::PosZ);
-        m_writer.set_axis_remap(rx, ry, rz);
-        BoundingBoxf bbox_bed(print.config().printable_area.values);
-        m_writer.set_build_volume_max(Vec3d(bbox_bed.max.x(), bbox_bed.max.y(),
-                                              print.config().printable_height.value));
-    }
-
-    // Belt writers only: travel-speed selection becomes per-point (see
-    // GCodeWriter::uses_pointwise_travel_speed()), which must not change for
-    // non-belt printers. The writer gets the same test the extrusions use, so a
-    // travel is judged against the belt surface (belt_height_above_floor) exactly
-    // like the path it leads to. Writer points carry the G-code origin and
-    // extruder offset that point_to_gcode() added; the belt surface is described
-    // in the object's own frame.
-    if (print.config().belt_printer.value) {
-        m_writer.set_first_layer_point_test([this](const Vec3d &point_logical) {
-            const Vec2d extruder_offset = m_writer.filament() != nullptr ? EXTRUDER_CONFIG(extruder_offset) : Vec2d::Zero();
-            return this->on_first_layer(Vec3d(point_logical.x() - m_origin.x() + extruder_offset.x(),
-                                              point_logical.y() - m_origin.y() + extruder_offset.y(),
-                                              point_logical.z()));
-        });
-    }
-
    // How many times will be change_layer() called?
    // change_layer() in turn increments the progress bar status.
    m_layer_count = 0;
@@ -3180,9 +3094,6 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                zs.push_back(layer->print_z);
            for (auto layer : object->support_layers())
                zs.push_back(layer->print_z);
-            // Belt brim apron bands each get their own change_layer() call.
-            for (const BeltBrimBand &band : object->belt_brim_prologue())
-                zs.push_back(band.print_z);
            std::sort(zs.begin(), zs.end());
            //BBS: merge numerically very close Z values.
            auto end_it = std::unique(zs.begin(), zs.end());
@@ -3202,9 +3113,6 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                zs.push_back(layer->print_z);
            for (auto layer : object->support_layers())
                zs.push_back(layer->print_z);
-            // See the ByObject branch: apron bands are real printed layers.
-            for (const BeltBrimBand &band : object->belt_brim_prologue())
-                zs.push_back(band.print_z);
        }
        if (!zs.empty())
        {
@@ -3838,10 +3746,6 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
        }
    }

-    // Belt printer: the tilt and transform settings the G-code viewer reads back. They
-    // are comments outside the config block, so they go after the thumbnails that a
-    // BTT TFT firmware needs first, and are written whether or not that header block is.
-    this->write_belt_header(file, print);

    // Write some terse information on the slicing parameters.
    const PrintObject *first_object         = print.objects().front();
@@ -4055,16 +3959,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato

        pa_test.set_speed(fast_speed, slow_speed);
        pa_test.draw_numbers() = print.calib_params().print_numbers;
-
-        // ORCA-Belt: the PA line test draws directly on the build surface in
-        // logical bed coordinates — on a belt printer that surface is the
-        // belt plane, not the slicing plane.
-        const bool belt_world_coords = print.config().belt_printer.value;
-        if (belt_world_coords)
-            install_belt_kinematics(m_writer, print.config(), /*world_coordinates=*/true);
        gcode += pa_test.generate_test(params.start, params.step, std::llround(std::ceil((params.end - params.start) / params.step)) + 1);
-        if (belt_world_coords)
-            install_belt_kinematics(m_writer, print.config(), /*world_coordinates=*/false);

        file.write(gcode);
    } else {
@@ -4101,8 +3996,6 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                }
                print.throw_if_canceled();
                this->set_origin(unscale((*print_object_instance_sequential_active)->shift));
-                this->on_set_origin((*print_object_instance_sequential_active)->print_object,
-                                    (*print_object_instance_sequential_active)->shift);

                // BBS: prime extruder if extruder change happens before this object instance
                bool prime_extruder = false;
@@ -4148,7 +4041,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                // and export G-code into file.
                tool_ordering.cal_most_used_extruder(print.config());
                m_printed_objects.emplace_back(&object);
-                this->process_layers(print, tool_ordering, collect_layers_to_print(object, print.config().belt_printer.value), *print_object_instance_sequential_active - object.instances().data(), file,
+                this->process_layers(print, tool_ordering, collect_layers_to_print(object), *print_object_instance_sequential_active - object.instances().data(), file,
                                     prime_extruder);
                {
                    // save the flush statitics stored in tool ordering by object
@@ -5451,43 +5344,8 @@ std::string GCode::generate_object_skirt_group(const Print &print,
                          object_skirt_tools, layer, extruder_id, m_skirt_group_done[group_idx]);
 }

-std::string GCode::generate_object_brim(const Print &print, const PrintObject &object, size_t instance_id, bool first_layer,
-                                        const Layer *object_layer)
+std::string GCode::generate_object_brim(const Print &print, const PrintObject &object, size_t instance_id, bool first_layer)
 {
-    // Belt printers lay the brim onto the tilted belt over many layers, so there is
-    // nothing special about the first one.  The bands that coincide with an object
-    // layer are emitted here; those below the object's first layer are apron and go
-    // through process_belt_brim_layer() instead.
-    if (object.has_belt_brim()) {
-        if (object_layer == nullptr)
-            return {};
-        const std::vector<ExtrusionEntityCollection> &by_layer = object.belt_brim_by_layer();
-        const size_t layer_idx = object_layer->id();
-        if (layer_idx >= by_layer.size() || by_layer[layer_idx].empty())
-            return {};
-        std::string gcode;
-        // The band geometry is in the object's local slicing frame, exactly like its
-        // perimeters, so it needs this instance's origin.  The caller does not set it
-        // until later, and the plate brim path deliberately uses (0, 0) because its
-        // geometry is already in plate coordinates.
-        m_config.apply(print.default_region_config());
-        m_config.apply(object.config(), true);
-        // m_layer is not switched to this object until after brim emission, so name
-        // the belt-floor owner explicitly or the classification borrows whichever
-        // object was visited last.
-        BeltFloorObjectGuard floor_owner{ m_belt_floor_object, &object };
-        const Point &offset = object.instances()[instance_id].shift;
-        this->set_origin(unscale(offset));
-        this->on_set_origin(&object, offset);
-        m_avoid_crossing_perimeters.use_external_mp();
-        for (const ExtrusionEntity *ee : by_layer[layer_idx].entities)
-            if (ee != nullptr)
-                gcode += this->extrude_entity(*ee, "brim", NOZZLE_CONFIG(support_speed));
-        m_avoid_crossing_perimeters.use_external_mp(false);
-        m_avoid_crossing_perimeters.disable_once();
-        return gcode;
-    }
-
    if (!first_layer)
        return {};

@@ -5524,158 +5382,6 @@ std::string GCode::generate_object_brim(const Print &print, const PrintObject &o
    return {};
 }

-// Belt printers: emit one brim-only apron layer.  On a tilted belt the brim ahead
-// of the part lands at slicing Z below the object's first layer, because the
-// object's layer 0 IS its leading contact with the belt.  Those layers carry brim
-// and nothing else.
-//
-// This is intentionally a short path rather than a variant of process_layer(): an
-// apron band has no Layer, and giving it a synthetic one would feed a fabricated
-// Layer::id() into initial-layer temperature selection, the spiral vase probe,
-// gradual interpolation and cooling.  Correct first-layer treatment comes from
-// the height above the belt, which is evaluated per point.
-LayerResult GCode::process_belt_brim_layer(
-    const Print                     &print,
-    const std::vector<LayerToPrint> &layers,
-    const LayerTools                &layer_tools,
-    const bool                       last_layer,
-    const size_t                     single_object_instance_idx)
-{
-    // layer_id 0 is deliberate, not a placeholder.  CoolingBuffer reads it for the
-    // initial_layer_fan_speed override and the close_fan_the_first_x_layers gate
-    // (CoolingBuffer.cpp), and every apron band is first-layer material by the only
-    // definition that means anything on a belt: it lies on the belt plane itself.  Numbering
-    // the bands 1, 2, 3... would ramp the fan up while still printing on the belt.
-    // spiral_vase_enable false: spiral vase is refused alongside belt brim in
-    // Print::validate().  cooling_buffer_flush true: an apron layer is a complete layer, and
-    // the default (object_layer || raft_layer || last_layer) is false here, so fan and
-    // slowdown would otherwise never be applied to it.
-    LayerResult result { {}, 0, false, true };
-    if (layer_tools.extruders.empty())
-        // Nothing to extrude.
-        return result;
-
-    coordf_t print_z = 0.;
-    coordf_t height  = 0.;
-    for (const LayerToPrint &ltp : layers)
-        if (ltp.belt_brim_band != nullptr) {
-            print_z = ltp.belt_brim_band->print_z;
-            height  = ltp.belt_brim_band->height;
-            break;
-        }
-
-    // Apron bands precede object layer 0 and have no layer id of their own; they take the
-    // filament and nozzle assignment in effect at the first object layer.
-    m_cur_layer_idx = 0;
-
-    // Publish the band's Z for _extrude()'s first-layer-plane probe, and make sure
-    // it cannot leak past this layer even if an extrusion throws.
-    struct BeltBrimZGuard {
-        std::optional<coordf_t> &slot;
-        ~BeltBrimZGuard() { slot.reset(); }
-    } z_guard { m_belt_brim_z };
-    m_belt_brim_z = print_z;
-    m_layer = nullptr;
-
-    std::string gcode;
-    const unsigned int extruder_id = layer_tools.extruders.front();
-    if (m_writer.filament() == nullptr || m_writer.filament()->id() != extruder_id)
-        gcode += this->set_extruder(extruder_id, print_z);
-
-    // An apron band is a real printed layer: it is counted in m_layer_count, it advances
-    // m_layer_index through change_layer(), and the G-code viewer needs its Z/height tags.
-    // Keep the same caches and hooks the ordinary path maintains, or the first object layer
-    // would compute its height against a stale pre-apron Z and layer-change templates would
-    // skip these layers entirely.
-    {
-        char buf[64];
-        gcode += ";" + GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Layer_Change) + "\n";
-        sprintf(buf, ";Z:%g\n", print_z);
-        gcode += buf;
-        const float band_height = float(height);
-        sprintf(buf, ";%s%g\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Height).c_str(), band_height);
-        gcode += buf;
-        m_last_layer_z = float(print_z);
-        m_max_layer_z  = std::max(m_max_layer_z, m_last_layer_z);
-        m_last_height  = band_height;
-    }
-
-    if (! m_config.before_layer_change_gcode.value.empty()) {
-        DynamicConfig config;
-        config.set_key_value("layer_num",   new ConfigOptionInt(m_layer_index + 1));
-        config.set_key_value("layer_z",     new ConfigOptionFloat(print_z));
-        config.set_key_value("max_layer_z", new ConfigOptionFloat(m_max_layer_z));
-        gcode += this->placeholder_parser_process("before_layer_change_gcode",
-            print.config().before_layer_change_gcode.value, m_writer.filament()->id(), &config) + "\n";
-    }
-
-    gcode += this->change_layer(print_z);
-
-    if (! m_config.layer_change_gcode.value.empty()) {
-        DynamicConfig config;
-        config.set_key_value("layer_num",   new ConfigOptionInt(m_layer_index));
-        config.set_key_value("layer_z",     new ConfigOptionFloat(print_z));
-        config.set_key_value("max_layer_z", new ConfigOptionFloat(m_max_layer_z));
-        gcode += this->placeholder_parser_process("layer_change_gcode",
-            print.config().layer_change_gcode.value, m_writer.filament()->id(), &config) + "\n";
-    }
-
-    // Objects sharing this apron Z may use different brim filaments; print each in its own tool.
-    for (const unsigned int brim_extruder : layer_tools.extruders) {
-        if (m_writer.filament() == nullptr || m_writer.filament()->id() != brim_extruder)
-            gcode += this->set_extruder(brim_extruder, print_z);
-        gcode += this->emit_belt_brim_bands(print, layers, single_object_instance_idx, brim_extruder);
-    }
-
-    result.gcode = std::move(gcode);
-    return result;
-}
-
-// Emit every apron band carried by this set of layers.
-//
-// Shared by the brim-only branch above and the ordinary process_layer() path.  Both need
-// it: an apron band prints below its OWN object's first layer, but on a multi-object belt
-// another object can already be printing at that print_z, in which case the layer has an
-// object layer, takes the ordinary path, and the band would be silently dropped.
-std::string GCode::emit_belt_brim_bands(const Print                     &print,
-                                        const std::vector<LayerToPrint> &layers,
-                                        const size_t                     single_object_instance_idx,
-                                        const unsigned int               extruder_id)
-{
-    std::string gcode;
-    for (const LayerToPrint &ltp : layers) {
-        const BeltBrimBand *band = ltp.belt_brim_band;
-        if (band == nullptr || band->fills.empty() || ltp.original_object == nullptr)
-            continue;
-        const PrintObject &object = *ltp.original_object;
-        // belt_brim_filament() is 1-based.
-        if (! object.has_belt_brim() || static_cast<unsigned int>(object.belt_brim_filament() - 1) != extruder_id)
-            continue;
-        // Speeds, flow and retraction all read m_config.
-        m_config.apply(print.default_region_config());
-        m_config.apply(object.config(), true);
-        // Apron bands have no Layer at all (m_layer is null here), so the belt
-        // floor owner has to be named the same way the object brim names it.
-        BeltFloorObjectGuard floor_owner{ m_belt_floor_object, &object };
-        const size_t i_begin = single_object_instance_idx == size_t(-1) ? 0 : single_object_instance_idx;
-        const size_t i_end   = single_object_instance_idx == size_t(-1) ? object.instances().size()
-                                                                       : single_object_instance_idx + 1;
-        for (size_t i = i_begin; i < i_end && i < object.instances().size(); ++ i) {
-            // Band geometry is object-local, like the object's own extrusions.
-            const Point &offset = object.instances()[i].shift;
-            this->set_origin(unscale(offset));
-            this->on_set_origin(&object, offset);
-            m_avoid_crossing_perimeters.use_external_mp();
-            for (const ExtrusionEntity *ee : band->fills.entities)
-                if (ee != nullptr)
-                    gcode += this->extrude_entity(*ee, "brim", NOZZLE_CONFIG(support_speed));
-            m_avoid_crossing_perimeters.use_external_mp(false);
-            m_avoid_crossing_perimeters.disable_once();
-        }
-    }
-    return gcode;
-}
-
 // Bedslinger model. The heavier the bed load, the lower the achievable Y acceleration for a given
 // drive force (a = F / (bed_mass + printed_mass)). Reads machine_max_force_Y / machine_bed_mass_Y (both
 // default 0, i.e. absent on every existing printer), in which case it just returns the min configured Y
@@ -5998,13 +5704,6 @@ LayerResult GCode::process_layer(
        }
    }

-    // Belt printers: a brim-only apron layer has neither an object nor a support
-    // layer, so it must be handled before layer_ptr is dereferenced below.
-    if (object_layer == nullptr && support_layer == nullptr &&
-        std::any_of(layers.begin(), layers.end(),
-                    [](const LayerToPrint &l) { return l.belt_brim_band != nullptr; }))
-        return this->process_belt_brim_layer(print, layers, layer_tools, last_layer, single_object_instance_idx);
-
    const Layer* layer_ptr = nullptr;
    if (object_layer != nullptr)
        layer_ptr = object_layer;
@@ -6168,29 +5867,7 @@ LayerResult GCode::process_layer(
    //BBS: set layer time fan speed after layer change gcode
    gcode += ";_SET_FAN_SPEED_CHANGING_LAYER\n";

-    // Belt printers: ordinary-layer apron bands (a band whose print_z coincides with an
-    // object/support layer, so it takes this path rather than the brim-only branch) are
-    // NOT emitted here anymore.  They used to be laid down with whatever tool happened to
-    // be active; instead they are now emitted inside the extruder loop below, in their
-    // own brim-filament pass and before that pass's object extrusion, so the brim goes
-    // down first with the correct tool.  See the emit_belt_brim_for_extruder call.
-
    //Calibration Layer-specific GCode
-    // ORCA-Belt: on belt printers the calibration object is counter-rotated to
-    // stand upright in slicing space on top of a support wedge, so its first
-    // layer starts above Z=0 (at its position along the belt) with support-only
-    // layers below it. Reference the per-height calibration bands to the bottom
-    // of the object so they keep their designed meaning; on regular printers
-    // the object base is at Z=0 and calib_z == print_z.
-    double calib_z = print_z;
-    if (m_config.belt_printer.value && print.calib_mode() != CalibMode::Calib_None) {
-        // Skip empty ghost layers the grid may produce below the object.
-        for (const Layer* l : layer.object()->layers())
-            if (!l->lslices.empty()) {
-                calib_z = print_z - (l->print_z - l->height);
-                break;
-            }
-    }
    switch (print.calib_mode()) {
        case CalibMode::Calib_PA_Tower: {
            gcode += writer().set_pressure_advance(this->interpolate_value_across_layers(static_cast<float>(print.calib_params().start),
@@ -6199,18 +5876,7 @@ LayerResult GCode::process_layer(
            break;
        }
        case CalibMode::Calib_Temp_Tower: {
-            // ORCA-Belt: the sectioned variant prints each temperature as its
-            // own object in native belt orientation, with the temperature
-            // encoded in the object name ("temp_230") — step per object
-            // instead of ramping per layer band.
-            int sectioned_temp = 0;
-            if (m_config.belt_printer.value &&
-                sscanf(layer.object()->model_object()->name.c_str(), "temp_%d", &sectioned_temp) == 1 &&
-                sectioned_temp > 0) {
-                gcode += writer().set_temperature(static_cast<unsigned int>(sectioned_temp));
-            } else {
-                gcode += writer().set_temperature(this->interpolate_value_across_layers(static_cast<float>(print.calib_params().start), static_cast<float>(print.calib_params().end), 5.0f));
-            }
+            gcode += writer().set_temperature(this->interpolate_value_across_layers(static_cast<float>(print.calib_params().start), static_cast<float>(print.calib_params().end), 5.0f));
            break;
        }
        case CalibMode::Calib_VFA_Tower: {
@@ -6224,16 +5890,16 @@ LayerResult GCode::process_layer(
            break;
        }
        case CalibMode::Calib_Vol_speed_Tower: {
-            auto _speed = print.calib_params().start + std::max(0.0, calib_z) * print.calib_params().step;
+            auto _speed = print.calib_params().start + print_z * print.calib_params().step;
            m_calib_config.set_key_value("outer_wall_speed", new ConfigOptionFloatsNullable({std::round(_speed)}));
            break;
        }
        case CalibMode::Calib_Retraction_tower: {
-            auto _length = print.calib_params().start + std::floor(std::max(0.0,calib_z-0.4)) * print.calib_params().step;
+            auto _length = print.calib_params().start + std::floor(std::max(0.0,print_z-0.4)) * print.calib_params().step;
            DynamicConfig _cfg;
            _cfg.set_key_value("retraction_length", new ConfigOptionFloats{_length});
            writer().config.apply(_cfg);
-            sprintf(buf, "; Calib_Retraction_tower: Z_HEIGHT: %g, length:%g\n", calib_z, _length);
+            sprintf(buf, "; Calib_Retraction_tower: Z_HEIGHT: %g, length:%g\n", print_z, _length);
            gcode += buf;
            break;
        }
@@ -6295,15 +5961,7 @@ LayerResult GCode::process_layer(
        }
    }

-    // Belt printers: defer the temperature/PLR transition until the entire layer
-    // is past the first-layer band above the belt.  Elsewhere (non-belt printers,
-    // support-only layers) the legacy `!first_layer` predicate applies, so
-    // behavior is bit-identical to the pre-feature path.
-    bool past_first_layer_band = !first_layer;
-    if (int past = this->belt_layer_past_first_layer_band(object_layer); past >= 0)
-        past_first_layer_band = past > 0;
-
-    if (past_first_layer_band && !m_second_layer_things_done) {
+    if (!first_layer && !m_second_layer_things_done) {
        // Orca: set power loss recovery
        const auto plr_mode = print.config().enable_power_loss_recovery.value;
        gcode += m_writer.enable_power_loss_recovery(plr_mode);
@@ -6696,7 +6354,6 @@ LayerResult GCode::process_layer(
            std::vector<GCode::ObjectByExtruder> &objects_by_extruder = objects_by_extruder_it->second;
            std::vector<InstanceToPrint> &instances = filament_plan.first;
            std::vector<IslandOrderNode> nodes;
-            std::vector<std::pair<size_t, bool>> layout;   // Per instance, see IslandOrderCacheEntry
            std::vector<size_t>          node_instances;
            auto quantize_to_mm = [](const Point &pt) -> Point {
                const coord_t grid = coord_t(scale_(1.));
@@ -6721,7 +6378,6 @@ LayerResult GCode::process_layer(
                    const size_t instance_idx = instances.size();
                    instances.emplace_back(object_by_extruder, layer_id, *print_object, instance_id,
                                           print_object->instances()[instance_id].model_instance->get_labeled_id());
-                    layout.emplace_back(islands.size(), ! islands.empty() && ! islands.back().by_region.empty());
                    const Point &shift = print_object->instances()[instance_id].shift;
                    const size_t first_node = nodes.size();
                    if (islands_chainable)
@@ -6741,9 +6397,8 @@ LayerResult GCode::process_layer(

            // Reuse the cached tour while this filament's island layout is unchanged.
            auto &cache_entry = m_ordering_cache[filament_id];
-            if (! (cache_entry.nodes == nodes && cache_entry.layout == layout)) {
-                cache_entry.nodes  = nodes;
-                cache_entry.layout = layout;
+            if (!(cache_entry.first == nodes)) {
+                cache_entry.first = nodes;
                Points node_points;
                node_points.reserve(nodes.size());
                for (const IslandOrderNode &node : nodes)
@@ -6776,12 +6431,12 @@ LayerResult GCode::process_layer(
                        // A visit without explicit islands already prints everything.
                        continue;
                    std::vector<ObjectByExtruder::Island> &islands = instances[i].object_by_extruder.islands;
-                    if (! islands.empty() && ! islands.back().by_region.empty())
+                    if (!islands.back().by_region.empty())
                        last_visit.islands.emplace_back(islands.size() - 1);
                }
-                cache_entry.visits = std::move(visits);
+                cache_entry.second = std::move(visits);
            }
-            filament_plan.second = cache_entry.visits;
+            filament_plan.second = cache_entry.second;
        }
    }

@@ -6841,21 +6496,6 @@ LayerResult GCode::process_layer(

    // Extrude the skirt, brim, support, perimeters, infill ordered by the extruders.
    m_skirt_group_done.resize(print.skirt_brim_groups().size());
-
-    // Belt brim bookkeeping.  A coincident belt_brim_by_layer band must be emitted
-    // exactly once, in its object's brim-filament pass; this records which have gone
-    // down so the in-visit emit and the end-of-layer orphan sweep never double it.
-    // Key = (LayerToPrint index, instance_id).
-    std::set<std::pair<size_t, size_t>> belt_brim_emitted;
-
-    // Emit every ORDINARY-layer apron band (belt_brim_prologue band coinciding with an
-    // object/support layer) whose brim filament is this pass's extruder, so each band
-    // prints in the correct tool's pass (Finding B).  extruder_id is 0-based (the
-    // reindexed tool domain).
-    auto emit_belt_brim_for_extruder = [this, &print, &layers, single_object_instance_idx](unsigned int extruder_id) -> std::string {
-        return this->emit_belt_brim_bands(print, layers, single_object_instance_idx, extruder_id);
-    };
-
    for (unsigned int extruder_id : layer_tools.extruders)
    {
        if (print.config().skirt_type == stCombined && !print.skirt_brim_groups().empty()) {
@@ -6972,16 +6612,6 @@ LayerResult GCode::process_layer(
        if (layer_tools.has_wipe_tower && m_wipe_tower)
            m_last_processor_extrusion_role = erWipeTower;

-        // Belt printers: now that this pass's tool is selected, lay down any ordinary-layer
-        // apron band whose brim filament is this extruder, before the object extrusion at
-        // this Z (brim goes down first, with the correct tool).  Restore the origin so the
-        // object-setup code below is unaffected.
-        if (print.has_belt_brim()) {
-            const Vec2d saved_origin = m_origin;
-            gcode += emit_belt_brim_for_extruder(extruder_id);
-            this->set_origin(saved_origin);
-        }
-
        auto &filament_plan = filament_to_print_instances[extruder_id];
        std::vector<InstanceToPrint>     &instances_to_print = filament_plan.first;
        const std::vector<InstanceVisit> &instance_visits    = filament_plan.second;
@@ -6998,20 +6628,7 @@ LayerResult GCode::process_layer(
                const LayerToPrint &layer_to_print = layers[instance_to_print.layer_id];
                if (visit.first_visit && print_wipe_extrusions == (is_anything_overridden ? 1 : 0)) {
                    gcode += generate_object_skirt_group(print, instance_to_print.print_object, instance_to_print.instance_id, layer_tools, layer, extruder_id);
-                    const PrintObject &vobj = instance_to_print.print_object;
-                    if (vobj.has_belt_brim()) {
-                        // Coincident belt brim: emit once, only in this object's brim-filament
-                        // pass (extruder_id and belt_brim_filament()-1 are both 0-based here),
-                        // and dedup on the LayerToPrint index (not Layer::id()) so the orphan
-                        // sweep below never re-emits it.
-                        if (extruder_id == (unsigned int)(vobj.belt_brim_filament() - 1) &&
-                            belt_brim_emitted.insert({ instance_to_print.layer_id, instance_to_print.instance_id }).second)
-                            gcode += generate_object_brim(print, vobj, instance_to_print.instance_id, first_layer,
-                                                          layer_to_print.object_layer);
-                    } else {
-                        gcode += generate_object_brim(print, vobj, instance_to_print.instance_id, first_layer,
-                                                      layer_to_print.object_layer);
-                    }
+                    gcode += generate_object_brim(print, instance_to_print.print_object, instance_to_print.instance_id, first_layer);
                }

                // To control print speed of the 1st object layer printed over raft interface.
@@ -7062,7 +6679,6 @@ LayerResult GCode::process_layer(
                    m_avoid_crossing_perimeters.use_external_mp_once();
                m_last_obj_copy = this_object_copy;
                this->set_origin(unscale(offset));
-                this->on_set_origin(&instance_to_print.print_object, offset);
                if (visit.first_visit && instance_to_print.object_by_extruder.support != nullptr) {
                    m_layer = layers[instance_to_print.layer_id].support_layer;
                    m_object_layer_over_raft = false;
@@ -7074,7 +6690,6 @@ LayerResult GCode::process_layer(
                        m_avoid_crossing_perimeters.use_external_mp_once();
                    m_last_obj_copy = this_object_copy;
                    this->set_origin(unscale(offset));
-                    this->on_set_origin(&instance_to_print.print_object, offset);
                    ExtrusionEntityCollection support_eec;

                    // BBS
@@ -7104,13 +6719,7 @@ LayerResult GCode::process_layer(
                // in this instance's frame after set_origin() above). Empty islands are skipped;
                // the trailing catch-all island has no centroid to chain by and always goes last.
                std::vector<ObjectByExtruder::Island> &islands = instance_to_print.object_by_extruder.islands;
-                std::vector<size_t> island_order;
-                island_order.reserve(visit.islands.size());
-                for (size_t idx : visit.islands)   // Never index past the islands (see IslandOrderCacheEntry)
-                    if (idx < islands.size())
-                        island_order.emplace_back(idx);
-                    else
-                        BOOST_LOG_TRIVIAL(error) << "island tour refers to island " << idx << " of " << islands.size() << ", skipped";
+                std::vector<size_t> island_order = visit.islands;
                if (island_order.empty()) {
                    island_order.reserve(islands.size());
                    if (layer_to_print.object_layer != nullptr && islands.size() == layer_to_print.object_layer->lslices.size() + 1) {
@@ -7148,7 +6757,6 @@ LayerResult GCode::process_layer(
                        m_avoid_crossing_perimeters.use_external_mp_once();
                    m_last_obj_copy = this_object_copy;
                    this->set_origin(unscale(offset));
-                    this->on_set_origin(&instance_to_print.print_object, offset);
                    //FIXME the following code prints regions in the order they are defined, the path is not optimized in any way.

                    auto has_infill = [](const std::vector<ObjectByExtruder::Island::Region> &by_region) {
@@ -7520,37 +7128,6 @@ LayerResult GCode::process_layer(
        }

    }
-
-    // Belt brim orphan sweep (Finding C).  A coincident belt_brim_by_layer band lives on
-    // an object layer, but that layer can yield no InstanceVisit above - a zero-extrusion
-    // lead-in slice with no coinciding support - so the in-visit emit never fired and the
-    // band would be dropped.  Emit any such band exactly once here, keyed the same way as
-    // the in-visit emit so already-printed bands are skipped.  These orphan layers carry
-    // no object material, so ending on the brim's position is harmless; we still save and
-    // restore m_origin, and only toolchange when the brim filament differs from the active
-    // one - a no-op on single-extruder prints, keeping their output unchanged.
-    if (print.has_belt_brim()) {
-        const Vec2d saved_origin = m_origin;
-        for (const LayerToPrint &ltp : layers) {
-            const PrintObject *obj = ltp.original_object;
-            if (obj == nullptr || ! obj->has_belt_brim() || ltp.object_layer == nullptr)
-                continue;
-            const size_t       ltp_idx = size_t(&ltp - layers.data());
-            const unsigned int brim0   = (unsigned int)(obj->belt_brim_filament() - 1);
-            const size_t       i_begin = single_object_instance_idx == size_t(-1) ? 0 : single_object_instance_idx;
-            const size_t       i_end   = single_object_instance_idx == size_t(-1) ? obj->instances().size()
-                                                                                 : single_object_instance_idx + 1;
-            for (size_t instance_id = i_begin; instance_id < i_end && instance_id < obj->instances().size(); ++ instance_id) {
-                if (! belt_brim_emitted.insert({ ltp_idx, instance_id }).second)
-                    continue;
-                if (m_writer.filament() == nullptr || m_writer.filament()->id() != brim0)
-                    gcode += this->set_extruder(brim0, print_z);
-                gcode += generate_object_brim(print, *obj, instance_id, first_layer, ltp.object_layer);
-            }
-        }
-        this->set_origin(saved_origin);
-    }
-
    if (first_layer) {
        for (auto iter = by_extruder.begin(); iter != by_extruder.end(); ++iter) {
            if (!iter->second.empty())
@@ -7879,13 +7456,8 @@ std::string GCode::extrude_loop(const ExtrusionLoop&                       loop_
        loop.split_at(last_pos, false);

    const auto seam_scarf_type = m_config.seam_slope_type.value;
-    // Belt printers never get a scarf joint. The scarf starts one layer height
-    // below the layer, which on a tilted belt is a step backwards along the belt
-    // axis into the previous layer's wall at the seam (0.28 mm at 45 degrees per
-    // 0.2 mm layer); with an aligned seam that ram repeats at the same spot on
-    // every layer and knocks the part loose.
    bool enable_seam_slope = ((seam_scarf_type == SeamScarfType::External && !is_hole) || seam_scarf_type == SeamScarfType::All) &&
-        !m_config.spiral_mode && !m_config.belt_printer.value &&
+        !m_config.spiral_mode &&
        (loop.role() == erExternalPerimeter || (loop.role() == erPerimeter && m_config.seam_slope_inner_walls)) &&
        layer_id() > 0;
    const auto nozzle_diameter = EXTRUDER_CONFIG(nozzle_diameter);
@@ -8534,21 +8106,6 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
    const std::string  bridge_description = is_bridge(path.role()) ? path_description + " (bridge)" : std::string();
    const std::string &description        = bridge_description.empty() ? path_description : bridge_description;

-    // First-layer plane evaluation: compute the path's slicing-frame point
-    // once and reuse for every per-path call site below.  When the plane
-    // evaluator is inactive (non-belt printers, or belt printers without
-    // a Z-axis shear) `path_on_first_layer` falls back to the legacy
-    // layer-id check, so behavior is bit-identical to the pre-feature path.
-    // A belt brim apron band has no Layer of its own, so it publishes its Z
-    // through m_belt_brim_z instead; without that the plane would be probed at
-    // Z=0 and the apron mis-classified for fan and speed.
-    const Vec3d path_point_mm{
-        unscale<double>(path.first_point().x()),
-        unscale<double>(path.first_point().y()),
-        m_layer ? m_layer->print_z : (m_belt_brim_z ? *m_belt_brim_z : 0.0)
-    };
-    const bool path_on_first_layer = this->on_first_layer(path_point_mm);
-
    const ExtrusionPathSloped* sloped = dynamic_cast<const ExtrusionPathSloped*>(&path);

    const auto get_sloped_z = [&sloped, this](double z_ratio) {
@@ -8623,7 +8180,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
        const double internal_solid_infill_acceleration = role == erSolidInfill ?
            m_config.internal_solid_infill_acceleration.get_at(nozzle).get_abs_value(m_config.default_acceleration.get_at(nozzle)) : 0.;
        double acceleration;
-        if (path_on_first_layer && m_config.initial_layer_acceleration.get_at(nozzle) > 0) {
+        if (this->on_first_layer() && m_config.initial_layer_acceleration.get_at(nozzle) > 0) {
            acceleration = m_config.initial_layer_acceleration.get_at(nozzle);
 #if 0
        } else if (this->object_layer_over_raft() && m_config.first_layer_acceleration_over_raft.value > 0) {
@@ -8649,7 +8206,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d

    // adjust X Y jerk
    if (NOZZLE_CONFIG(default_jerk) > 0) {
-        if (path_on_first_layer && NOZZLE_CONFIG(initial_layer_jerk) > 0) {
+        if (this->on_first_layer() && NOZZLE_CONFIG(initial_layer_jerk) > 0) {
            jerk = NOZZLE_CONFIG(initial_layer_jerk);
        } else if (NOZZLE_CONFIG(outer_wall_jerk) > 0 && is_external_perimeter(path.role())) {
             jerk = NOZZLE_CONFIG(outer_wall_jerk);
@@ -8711,7 +8268,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
        }

        // Additionally, adjust the value if we are on the first layer (except for brims and skirts)
-        if (path_on_first_layer && (path.role() != erBrim && path.role() != erSkirt)) {
+        if (this->on_first_layer() && (path.role() != erBrim && path.role() != erSkirt)) {
            _mm3_per_mm *= m_config.first_layer_flow_ratio;
        }
    }
@@ -8778,25 +8335,9 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d

    if (speed == 0)
        speed = filament_max_volumetric_speed / _mm3_per_mm;
-    // Use the belt-aware effective layer index when on a belt printer so
-    // the speed fade tracks perpendicular distance from the plane on
-    // belt printers; otherwise this falls back to the slicing layer id.
-    const int _layer = this->effective_layer_index_for_point(path_point_mm);
-    // Belt printers: a tilted layer runs from the belt to the top of the part, so the
-    // "first layers" the fan stays off for are a band along the belt. Mark where the
-    // extrusion enters and leaves it, per segment, for the cooling buffer.
-    const bool belt_band_tags   = m_enable_cooling_markers && m_config.belt_printer.value;
-    const int  belt_band_layers = belt_band_tags ? m_config.close_fan_the_first_x_layers.get_at(m_writer.filament()->id()) : 0;
-    auto tag_belt_band = [this, &gcode, belt_band_tags, belt_band_layers, z = path_point_mm.z()](coord_t x, coord_t y) {
-        if (! belt_band_tags)
-            return;
-        const bool in_band = this->effective_layer_index_for_point(Vec3d(unscale<double>(x), unscale<double>(y), z)) < belt_band_layers;
-        if (in_band != m_belt_in_band) {
-            gcode += in_band ? ";_BELT_BAND_START\n" : ";_BELT_BAND_END\n";
-            m_belt_in_band = in_band;
-        }
-    };
-    if (path_on_first_layer || object_layer_over_raft()) {
+    
+    const auto _layer = layer_id();
+    if (this->on_first_layer() || object_layer_over_raft()) {
        //BBS: for solid infill of first layer, speed can be higher as long as
        //wall lines have be attached
        if (path.role() != erBottomSurface) {
@@ -8805,6 +8346,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
                                            NOZZLE_CONFIG(initial_layer_infill_speed);
        }
    } else if (m_config.slow_down_layers > 1 && m_config.raft_layers == 0) {
+        
        if (_layer > 0 && _layer < m_config.slow_down_layers) {
            const auto first_layer_speed =
                is_perimeter(path.role())
@@ -8891,7 +8433,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
    const bool need_overhang_detection = NOZZLE_CONFIG(enable_overhang_speed) ||
        (FILAMENT_CONFIG(enable_overhang_bridge_fan) && m_enable_cooling_markers);

-    if (need_overhang_detection && !path_on_first_layer && !object_layer_over_raft() &&
+    if (need_overhang_detection && !this->on_first_layer() && !object_layer_over_raft() &&
        (is_bridge(path.role()) || is_perimeter(path.role()))) {
            bool is_external = is_external_perimeter(path.role());
            double ref_speed   = is_external ? NOZZLE_CONFIG(outer_wall_speed) : NOZZLE_CONFIG(inner_wall_speed);
@@ -9251,7 +8793,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
            }
            // BBS: use G1 if not enable arc fitting or has no arc fitting result or in spiral_mode mode or we are doing sloped extrusion
            // Attention: G2 and G3 is not supported in spiral_mode mode
-            if (!m_config.enable_arc_fitting || path.polyline.fitting_result.empty() || m_config.spiral_mode || sloped != nullptr || path.z_contoured || this->should_disable_arc_fitting()) {
+            if (!m_config.enable_arc_fitting || path.polyline.fitting_result.empty() || m_config.spiral_mode || sloped != nullptr || path.z_contoured) {
                double path_length = 0.;
                double total_length = sloped == nullptr ? 0. : path.polyline.length() * SCALING_FACTOR;
                double saved_z      = m_writer.get_position().z();
@@ -9271,7 +8813,6 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
                            flow_description = description + Slic3r::format(" | Old Flow Value: %0.5f Length: %0.5f",oldE, line_length);
                        }
                    }
-                    tag_belt_band((line.a.x() + line.b.x()) / 2, (line.a.y() + line.b.y()) / 2);
                    if (path.z_contoured) {
                        // ZAA: Z anti-aliased extrusion with variable Z per point
                        Vec2d dest2d = this->point_to_gcode(line.b.to_point());
@@ -9402,7 +8943,6 @@ std::string GCode::_extrude(const ExtrusionPath &path, const std::string &path_d
            const ProcessedPoint &processed_point = new_points[i];
            const ProcessedPoint &pre_processed_point = new_points[i-1];
            Vec3d                 p                   = this->point_to_gcode_quantized(processed_point.p);
-            tag_belt_band((pre_processed_point.p.x() + processed_point.p.x()) / 2, (pre_processed_point.p.y() + processed_point.p.y()) / 2);
            if (m_enable_cooling_markers) {
                if (enable_overhang_bridge_fan) {
                    cur_fan_enabled = check_overhang_fan(processed_point.overlap, path.role());
@@ -9562,26 +9102,10 @@ std::string GCode::extrusion_role_to_string_for_parser(const ExtrusionRole & rol
 // Step = 0 means gradual interpolation finishing at last value.
 float GCode::interpolate_value_across_layers(float start_value, float end_value, float step) const
 {
-    float ratio;
-    // ORCA-Belt: counter-rotated calibration objects stand on a support wedge,
-    // so support-only layers below the object would stretch a layer-index
-    // interpolation. Use the object's own Z span instead, so the value ramps
-    // across the test geometry only.
-    if (m_config.belt_printer.value && m_layer != nullptr && !m_layer->object()->layers().empty()) {
-        const auto& layers = m_layer->object()->layers();
-        // Skip empty ghost layers the grid may produce below the object.
-        double z_min = layers.front()->print_z;
-        for (const Layer* l : layers)
-            if (!l->lslices.empty()) { z_min = l->print_z; break; }
-        const double z_max = layers.back()->print_z;
-        if (m_layer->print_z <= z_min + EPSILON || z_max - z_min <= EPSILON)
-            return start_value;
-        ratio = float(std::min(1.0, (m_layer->print_z - z_min) / (z_max - z_min)));
-    } else if (m_layer_index <= 1) {
+    if (m_layer_index <= 1) {
        return start_value;
-    } else {
-        ratio = m_layer_index / (m_layer_count - 1.f);
    }
+    const float ratio = m_layer_index / (m_layer_count - 1.f);
    if (step > 0.f) {
        // Discrete equal-width bands. band is clamped to the last band so the result can't overshoot the range:
        // at the top layer ratio * n_bands == n_bands, which would otherwise index one band past the end.
@@ -9694,7 +9218,6 @@ std::string GCode::travel_to(const Point& point, ExtrusionRole role, std::string
    // multi-hop travel path inside the configuration space
    if (m_config.reduce_crossing_wall
        && !m_avoid_crossing_perimeters.disabled_once()
-        && m_layer != nullptr   // A brim apron layer has no Layer to avoid crossing
        && m_writer.is_current_position_clear())
        //BBS: don't generate detour travel paths when current position is unclea
    {
@@ -9719,8 +9242,7 @@ std::string GCode::travel_to(const Point& point, ExtrusionRole role, std::string
        // When "Wipe while retracting" is enabled, then extruder moves to another position, and travel from this position can cross perimeters.
        // Because of it, it is necessary to call avoid crossing perimeters again with new starting point after calling retraction()
        // FIXME Lukas H.: Try to predict if this second calling of avoid crossing perimeters will be needed or not. It could save computations.
-        if (last_post_before_retract != this->last_pos() && m_config.reduce_crossing_wall
-            && m_layer != nullptr) {   // A brim apron layer has no Layer to avoid crossing
+        if (last_post_before_retract != this->last_pos() && m_config.reduce_crossing_wall) {
            // If in the previous call of m_avoid_crossing_perimeters.travel_to was use_external_mp_once set to true restore this value for next call.
            if (used_external_mp_once)
                m_avoid_crossing_perimeters.use_external_mp_once();
@@ -10574,10 +10096,6 @@ std::string GCode::set_object_info(Print *print) {
            for (PrintInstance& inst : object->instances()) {
                inst.unique_id = unique_id++;
                inst.id        = inst_id++;
-                // Outlines are in plate coordinates. On a belt printer that is the frame after
-                // the slicing rotation has been undone and before the G-code axis remap and
-                // machine-frame shear: where the object stands on the belt, which is what an
-                // object picker shows. Klipper cancels by name, so nothing depends on more.
                auto bbox      = inst.get_bounding_box();
                auto center    = print->translate_to_print_space(Vec2d(bbox.center().x(), bbox.center().y()));
                const std::string &inst_name = instance_name(inst);
@@ -10600,64 +10118,6 @@ std::string GCode::set_object_info(Print *print) {
    return gcode.str();
 }

-// Whether an object layer lies entirely past the first-layer band above the belt:
-// 1 when its lowest point is at least one band thickness above the belt, 0 when
-// any of it is inside the band, -1 when the belt surface is not known for this
-// layer (not a belt print, or no object layer), in which case the caller falls
-// back to the slicing layer index.
-int GCode::belt_layer_past_first_layer_band(const Layer *object_layer) const
-{
-    if (object_layer == nullptr)
-        return -1;
-    // The belt surface is linear in the sliced XY, so a bbox's lowest point above
-    // it is at one of its corners.
-    double min_height = std::numeric_limits<double>::max();
-    bool   known      = false;
-    for (const BoundingBox &bb : object_layer->lslices_bboxes) {
-        const double xs[2] = { unscale<double>(bb.min.x()), unscale<double>(bb.max.x()) };
-        const double ys[2] = { unscale<double>(bb.min.y()), unscale<double>(bb.max.y()) };
-        for (double x : xs)
-            for (double y : ys) {
-                double h;
-                if (! this->belt_height_above_floor(Vec3d(x, y, object_layer->print_z), h))
-                    return -1;
-                known      = true;
-                min_height = std::min(min_height, h);
-            }
-    }
-    if (! known)
-        return -1;
-    return min_height >= this->first_layer_band_mm() - EPSILON ? 1 : 0;
-}
-
-bool GCode::belt_height_above_floor(const Vec3d &point_slicing_mm, double &height_mm) const
-{
-    // The owning object, which is what carries the belt description.  During
-    // object-brim and coincident-apron emission m_layer still points at whichever
-    // object was visited last (or at nothing at all), so those paths publish the
-    // owner explicitly -- otherwise a brim's speed would depend on plate order.
-    const PrintObject *object = m_belt_floor_object != nullptr ? m_belt_floor_object
-                              : (m_layer != nullptr ? m_layer->object() : nullptr);
-    if (object == nullptr)
-        return false;
-    const SlicingParameters &sp = object->slicing_parameters();
-    // Deliberately NOT BeltFloorContext: its init() folds in
-    // belt_support_floor_offset, a support-generator diagnostic. Letting that
-    // option move the model's first-layer speed band would be a surprising
-    // coupling -- a negative value would switch the slowdown off entirely.
-    // The belt surface itself is just shear * u + z_shift.
-    if (std::abs(sp.belt_floor_shear_factor) < EPSILON)
-        return false;
-    const double u = sp.belt_floor_from_axis == 0 ? point_slicing_mm.x() : point_slicing_mm.y();
-    const double floor_z = sp.belt_floor_shear_factor * u + sp.belt_floor_z_shift;
-    // Measured along the slicing Z, not perpendicular to the belt: layers are
-    // horizontal slabs in the sliced frame, so the slab holding the material that
-    // rests on the belt at this point is the one within one layer height of it.
-    // A perpendicular measure would shrink the band by 1/cos(tilt).
-    height_mm = point_slicing_mm.z() - floor_z;
-    return true;
-}
-
 // convert a model-space scaled point into G-code coordinates
 Vec2d GCode::point_to_gcode(const Point &point) const
 {
@@ -7,7 +7,6 @@
 #include "Print.hpp"
 #include "libslic3r.h"
 #include "GCodeWriter.hpp"
-#include "GCode/BeltKinematics.hpp"
 #include "Layer.hpp"
 #include "Point.hpp"
 #include "PlaceholderParser.hpp"
@@ -41,16 +40,13 @@
 #include <memory>
 #include <map>
 #include <unordered_map>
-#include <optional>
 #include <set>
 #include <string>
 #include <cfloat>
 #include <vector>
 #include <utility>
-#include <cmath>
 #include "BoundingBox.hpp"
 #include "Polyline.hpp"
-#include "BeltBrim.hpp"

 namespace Slic3r { class ExtrusionEntityCollection; }

@@ -253,9 +249,8 @@ public:
        m_toolchange_count(0),
        m_nominal_z(0.)
        {}
-    virtual ~GCode() = default;
+    ~GCode() = default;

-public:
    // throws std::runtime_exception on error,
    // throws CanceledException through print->throw_if_canceled().
    void            do_export(Print* print, const char* path, GCodeProcessorResult* result = nullptr, ThumbnailsGeneratorCallback thumbnail_cb = nullptr);
@@ -347,13 +342,6 @@ public:
        const Layer* 		object_layer;
        const SupportLayer* support_layer;
        const PrintObject*  original_object; //BBS: used for shared object logic
-        // Belt printers only: an apron band that prints BELOW the object's first
-        // layer, so it has no object or support layer of its own.  Deliberately
-        // not a Layer, so it cannot leak Layer::id() semantics into initial-layer
-        // temperature, spiral vase, cooling or interpolation logic.  When this is
-        // the only thing set, layer() is null and process_layer() takes its
-        // dedicated brim-only branch.
-        const BeltBrimBand* belt_brim_band { nullptr };
        const Layer* 		layer()   const
        {
            if (object_layer != nullptr)
@@ -383,24 +371,11 @@ public:
                count++;
            }

-            // A brim-only apron band contributes no object/support layer, and
-            // averaging zero terms would yield NaN.  Never folded into the
-            // average, so the non-belt result is bit-identical.
-            if (count == 0 && belt_brim_band != nullptr)
-                return belt_brim_band->print_z;
-
            return sum_z / count;
        }
    };

-    // Public accessor for the first-layer plane evaluator.  Used by
-    // CoolingBuffer (which is constructed with a GCode reference and needs
-    // to read the plane for per-segment fan re-evaluation).  All other
-    // first-layer-plane access points (on_first_layer overload, effective
-    // index helper) are in the protected section since they're called from
-    // GCode internals only.
-
-protected:
+private:
    class GCodeOutputStream {
    public:
        GCodeOutputStream(FILE *f, GCodeProcessor &processor) : f(f), m_processor(processor) {}
@@ -428,21 +403,9 @@ protected:
        FILE *f = nullptr;
        GCodeProcessor &m_processor;
    };
-
-    // Virtual hooks for belt printer subclass (BeltGCode).
-    // No-ops in base GCode; overridden in BeltGCode.
-    virtual void init_belt_writer(Print &print) {}
-    virtual void write_belt_header(GCodeOutputStream &file, const Print &print) {}
-    virtual void on_set_origin(const PrintObject *obj, const Point &inst_shift) {}
-    // Arc fitting is suppressed whenever the writer's machine mapping cannot
-    // represent a G2/G3 arc. Belt printers get this through BeltKinematics
-    // rather than through an override of their own.
-    virtual bool should_disable_arc_fitting() const
-        { return ! m_writer.kinematics().supports_arc_moves(); }
-
    void            _do_export(Print &print, GCodeOutputStream &file, ThumbnailsGeneratorCallback thumbnail_cb);

-    static std::vector<LayerToPrint>        		                   collect_layers_to_print(const PrintObject &object, bool skip_empty_first_layer = false);
+    static std::vector<LayerToPrint>        		                   collect_layers_to_print(const PrintObject &object);
    static std::vector<std::pair<coordf_t, std::vector<LayerToPrint>>> collect_layers_to_print(const Print &print);

    std::string generate_skirt(const Print &print,
@@ -462,29 +425,7 @@ protected:
    std::string generate_object_brim(const Print &print,
        const PrintObject &object,
        size_t instance_id,
-        bool first_layer,
-        const Layer *object_layer);
-
-    // Belt printers: emit one brim-only apron layer.  These print below the
-    // object's first layer, so there is no object or support layer for the normal
-    // process_layer() machinery to work from.  Kept to the minimum a layer needs -
-    // tool, Z move, extrusions - so that nothing here can perturb the
-    // Layer::id()-based logic the ordinary path relies on.
-    LayerResult process_belt_brim_layer(
-        const Print                     &print,
-        const std::vector<LayerToPrint> &layers,
-        const LayerTools                &layer_tools,
-        const bool                       last_layer,
-        const size_t                     single_object_instance_idx);
-
-    // Emit the apron bands carried by these layers whose brim filament is extruder_id
-    // (0-based).  Called from both the brim-only branch and the ordinary path, since a
-    // band's print_z can coincide with another object's layer on a multi-object belt.
-    std::string emit_belt_brim_bands(
-        const Print                     &print,
-        const std::vector<LayerToPrint> &layers,
-        const size_t                     single_object_instance_idx,
-        const unsigned int               extruder_id);
+        bool first_layer);

    LayerResult process_layer(
        const Print                     &print,
@@ -688,21 +629,9 @@ protected:
    };

    // Cache the per-filament island tour to avoid recomputing while the layer's island layout is
-    // unchanged. Key: filament_id. Value: the nodes the tour was computed from, the per-instance
-    // island layout (count and whether the trailing catch-all island has anything to print), and
-    // the resulting visits.
-    // The layout is part of the key. Nodes only cover the chainable islands, so two
-    // layers with the same centroids but a different number of islands (thin walls, negative
-    // volumes come and go) matched the cache and the visit's catch-all index -- islands.size() - 1
-    // of the OLD layer -- ran past the new layer's islands (found by fuzzing: segfault in
-    // extrude_perimeters on multi-part objects).
-    struct IslandOrderCacheEntry
-    {
-        std::vector<IslandOrderNode>         nodes;
-        std::vector<std::pair<size_t, bool>> layout;
-        std::vector<InstanceVisit>           visits;
-    };
-    std::map<unsigned int, IslandOrderCacheEntry> m_ordering_cache;
+    // unchanged. Key: filament_id. Value: {nodes the tour was computed from, resulting visits}.
+    std::map<unsigned int, std::pair<std::vector<IslandOrderNode>, std::vector<InstanceVisit>>>
+                                        m_ordering_cache;

    ExtrusionQualityEstimator m_extrusion_quality_estimator;

@@ -839,11 +768,6 @@ protected:

    std::unique_ptr<CoolingBuffer>      m_cooling_buffer;
    std::unique_ptr<SpiralVase>         m_spiral_vase;
-    // First-layer plane evaluator.  Constructed once per print from the
-    // PrintConfig.  is_active() == false on non-belt printers and on belt
-    // printers without a Z-axis shear; in that case all per-path plane
-    // checks short-circuit to the legacy Layer::id() == 0 path.
-    // Plate origin, kept so a writer replaced during export can be given it again.

    std::unique_ptr<PressureEqualizer>  m_pressure_equalizer;
    
@@ -899,25 +823,6 @@ protected:
    mutable ConfigIndexCache m_filament_index_cache;
    mutable ConfigIndexCache m_nozzle_index_cache;

-    // Belt brim apron layers only.  They have no Layer, so the print_z that
-    // _extrude() needs for the first-layer-plane probe is published here instead.
-    // Scoped by BeltBrimZGuard in process_belt_brim_layer(), never left set.
-    std::optional<coordf_t> m_belt_brim_z;
-    // Belt brim only.  Brim and coincident apron bands are emitted before m_layer
-    // is switched to their object, so belt_height_above_floor() would otherwise
-    // read the previously visited object's belt description -- making a brim's
-    // classification depend on plate visiting order.  Those paths publish the
-    // owner here for the duration of the emission.  Never left set.
-    const PrintObject *m_belt_floor_object{nullptr};
-    struct BeltFloorObjectGuard {
-        const PrintObject *&slot;
-        BeltFloorObjectGuard(const PrintObject *&s, const PrintObject *o) : slot(s) { slot = o; }
-        ~BeltFloorObjectGuard() { slot = nullptr; }
-    };
-
-    // The last extrusion segment was inside the belt's first-layer fan band (see _extrude()).
-    bool m_belt_in_band{false};
-
    std::set<unsigned int>                  m_initial_layer_extruders;
    std::vector<std::vector<unsigned int>>  m_sorted_layer_filaments;
    // BBS
@@ -935,46 +840,6 @@ protected:
    // On the first printing layer. This flag triggers first layer speeds.
    //BBS
    bool    on_first_layer() const { return m_layer != nullptr && m_layer->id() == 0 && abs(m_layer->bottom_z()) < EPSILON; }
-    // Per-point first-layer test.  On a belt printer the result depends on the
-    // supplied slicing-frame point (its height above the belt); otherwise we
-    // delegate to the legacy per-layer test.  This is the entry point used by
-    // per-path call sites in _extrude.
-    bool on_first_layer(const Vec3d &point_slicing_mm) const {
-        double h;
-        if (this->belt_height_above_floor(point_slicing_mm, h))
-            return h <= m_config.initial_layer_print_height.value + EPSILON;
-        return on_first_layer();
-    }
-    // "Effective layer index" used to drive layer-count thresholds like
-    // slow_down_layers.  On a belt printer this is the height above the belt in
-    // first_layer_band_mm() units; otherwise it is the legacy slicing layer index.
-    int effective_layer_index_for_point(const Vec3d &point_slicing_mm) const {
-        double h;
-        if (this->belt_height_above_floor(point_slicing_mm, h)) {
-            const double lh = this->first_layer_band_mm();
-            return h <= 0. ? 0 : int(std::floor(h / lh));
-        }
-        return on_first_layer() ? 0 : layer_id();
-    }
-
-    // Band thickness for the *effective layer index*: one first layer height, so
-    // "the first N layers" means the same height above the belt as on a flat bed.
-    double first_layer_band_mm() const {
-        const double band = m_config.initial_layer_print_height.value;
-        return band > 0. ? band : 0.2;
-    }
-
-    // Height of a slicing-frame point above the belt surface, or false when this
-    // is not a belt print.
-    //
-    // The belt surface is known exactly in the slicing frame from the slicing
-    // parameters (belt_floor_shear_factor / _from_axis / _z_shift) -- the same
-    // description the support generator uses, independent of every remap and
-    // back-transform.
-    bool belt_height_above_floor(const Vec3d &point_slicing_mm, double &height_mm) const;
-    // 1 / 0 / -1: the object layer is entirely past the first-layer band above the
-    // belt / reaches into it / the belt surface is not known for it.
-    int  belt_layer_past_first_layer_band(const Layer *object_layer) const;
    int layer_id() const {
        if (m_layer == nullptr)
            return -1;
@@ -1,33 +0,0 @@
-#include "BeltBackTransform.hpp"
-#include "../BeltTransform.hpp"
-#include "../Point.hpp"
-#include "../PrintConfig.hpp"
-
-namespace Slic3r {
-
-bool BeltBackTransform::init_from_config(const PrintConfig &config)
-{
-    m_active  = false;
-    m_inverse = Transform3d::Identity();
-
-    if (!config.belt_printer.value)
-        return false;
-
-    // Build the forward pipeline (the rotation) and store its inverse.
-    Transform3d forward = BeltTransformPipeline::build_forward_transform(config);
-    if (forward.isApprox(Transform3d::Identity()))
-        return false;
-
-    m_inverse = forward.inverse();
-    m_active  = true;
-    return true;
-}
-
-Vec3d BeltBackTransform::apply(const Vec3d &pos) const
-{
-    if (!m_active)
-        return pos;
-    return m_inverse * pos;
-}
-
-} // namespace Slic3r
@@ -1,41 +0,0 @@
-#ifndef slic3r_BeltBackTransform_hpp_
-#define slic3r_BeltBackTransform_hpp_
-
-#include "../libslic3r.h"
-#include "../Point.hpp"
-#include "../PrintConfig.hpp"
-
-namespace Slic3r {
-
-// Reverses the pre-slice rotation that PrintObjectSlice.cpp applies to belt
-// printer geometry, converting G-code coordinates from the sliced (rotated)
-// frame back to the machine's real coordinate space.
-//
-// Initialized once from PrintConfig, then applied per-point in
-// BeltKinematics::to_machine() before axis remapping.
-//
-// Active on belt printers with a non-identity pre-slice rotation.
-class BeltBackTransform
-{
-public:
-    BeltBackTransform() = default;
-
-    // Initialize from belt printer config.  Rebuilds the same pre-slice rotation
-    // as PrintObjectSlice.cpp and precomputes the affine inverse.  Returns true if a non-identity back-transform was computed.
-    bool init_from_config(const PrintConfig &config);
-
-    // Apply the inverse transform to a point.  Returns pos unchanged if
-    // no back-transform is active.
-    Vec3d apply(const Vec3d &pos) const;
-
-    // True if a non-identity back-transform is active.
-    bool is_active() const { return m_active; }
-
-private:
-    bool       m_active  = false;
-    Transform3d m_inverse = Transform3d::Identity();
-};
-
-} // namespace Slic3r
-
-#endif // slic3r_BeltBackTransform_hpp_
@@ -1,42 +0,0 @@
-#include "BeltKinematics.hpp"
-#include "../BeltTransform.hpp"
-#include "../PrintConfig.hpp"
-#include "../GCodeWriter.hpp"
-#include "../Point.hpp"
-#include <memory>
-
-namespace Slic3r {
-
-BeltKinematics::BeltKinematics(const PrintConfig &config, bool world_coordinates)
-    : m_world_coordinates(world_coordinates)
-{
-    m_back_active = m_back_transform.init_from_config(config);
-    m_machine_frame.init_from_config(config);
-    if (m_back_active)
-        // BeltBackTransform stores the inverse of this; keep the forward so
-        // to_logical() can reverse the whole chain.
-        m_back_forward = BeltTransformPipeline::build_forward_transform(config);
-}
-
-Vec3d BeltKinematics::to_machine(const Vec3d &p) const
-{
-    const Vec3d after_back  = m_world_coordinates ? p : m_back_transform.apply(p);
-    const Vec3d after_remap = this->apply_axis_remap(after_back);
-    return m_machine_frame.apply(after_remap);
-}
-
-Vec3d BeltKinematics::to_logical(const Vec3d &machine) const
-{
-    const Vec3d before_frame = m_machine_frame.apply_inverse(machine);
-    const Vec3d before_remap = this->apply_axis_remap_inverse(before_frame);
-    if (m_world_coordinates || ! m_back_active)
-        return before_remap;
-    return m_back_forward * before_remap;
-}
-
-void install_belt_kinematics(GCodeWriter &writer, const PrintConfig &config, bool world_coordinates)
-{
-    writer.set_kinematics(std::make_unique<BeltKinematics>(config, world_coordinates));
-}
-
-} // namespace Slic3r
@@ -1,70 +0,0 @@
-#ifndef slic3r_BeltKinematics_hpp_
-#define slic3r_BeltKinematics_hpp_
-
-#include "MachineKinematics.hpp"
-#include "BeltBackTransform.hpp"
-#include "MachineFrameTransform.hpp"
-#include "../Point.hpp"
-
-namespace Slic3r {
-
-class PrintConfig;
-class GCodeWriter;
-
-// Belt-printer machine frame.
-//
-// Forward order, as applied per emitted point:
-//     machine = MachineFrameTransform( axis_remap( BeltBackTransform( logical ) ) )
-//
-// i.e. the slicer->world back-transform runs FIRST and the machine-frame
-// shear/scale LAST, so the latter acts as a global linear transform on the
-// already-placed coordinates.
-//
-// world_coordinates mode (the PA line / PA pattern calibration generators)
-// treats the incoming point as already relative to the belt surface -- X across,
-// Y along the belt, Z above it -- and therefore skips the back-transform while
-// keeping the remap and the machine frame. It is a different coordinate map, not
-// a writer mode, which is why it is fixed at construction.
-class BeltKinematics : public CartesianKinematics
-{
-public:
-    explicit BeltKinematics(const PrintConfig &config, bool world_coordinates = false);
-
-    Vec3d to_machine(const Vec3d &p) const override;
-    Vec3d to_logical(const Vec3d &machine) const override;
-    // Machine -> build-volume frame. Only the machine-frame shear/scale is undone,
-    // matching what GCodeProcessor's bounds validation wants. This is deliberately
-    // NOT to_logical().
-    Vec3d to_build_volume(const Vec3d &machine) const override
-        { return m_machine_frame.apply_inverse(machine); }
-
-    // A belt writer has always emitted full XYZ on every move, whether or not any
-    // individual stage reports itself active. Making this conditional would change
-    // emitted G-code for an identity-transform belt configuration.
-    bool must_emit_all_axes() const override { return true; }
-    bool suppress_lift_at_unknown_position() const override { return true; }
-    // The machine frame shears and scales, so a circle is an ellipse in machine
-    // coordinates and G2/G3 cannot describe it.
-    bool supports_arc_moves() const override { return false; }
-
-    bool world_coordinates() const { return m_world_coordinates; }
-
-private:
-    BeltBackTransform     m_back_transform;
-    MachineFrameTransform m_machine_frame;
-    // Forward of what m_back_transform inverts, kept so to_logical() can undo it.
-    Transform3d           m_back_forward { Transform3d::Identity() };
-    bool                  m_back_active { false };
-    bool                  m_world_coordinates { false };
-};
-
-// Install a belt machine frame on any GCodeWriter. Any axis remap and build
-// volume already configured on the writer are carried over, so this may be
-// called before or after those setters. Re-calling it with a different
-// world_coordinates value swaps the map (used around the PA line generator).
-void install_belt_kinematics(GCodeWriter &writer, const PrintConfig &config,
-                             bool world_coordinates = false);
-
-} // namespace Slic3r
-
-#endif // slic3r_BeltKinematics_hpp_
@@ -18,7 +18,6 @@
 #include <iostream>
 #include <float.h>
 #include <string>
-#include <string_view>
 #include <system_error>
 #include <unordered_map>
 #include <vector>
@@ -47,12 +46,10 @@ CoolingBuffer::CoolingBuffer(GCode &gcodegen) : m_config(gcodegen.config()), m_g
        m_num_extruders = std::max(ex.id() + 1, m_num_extruders);
        m_extruder_ids.emplace_back(ex.id());
    }
-
 }

 void CoolingBuffer::reset(const Vec3d &position)
 {
-    m_belt_band_active = false;
    // BBS: add I and J axis to store center of arc
    m_current_pos.assign(7, 0.f);
    m_current_pos[0] = float(position.x());
@@ -92,9 +89,6 @@ struct CoolingLine
        // ORCA: Add support for ironing fan speed control
        TYPE_IRONING_FAN_START         = 1 << 19,
        TYPE_IRONING_FAN_END           = 1 << 20,
-        // Belt printers: extrusions within the first-layer band above the belt.
-        TYPE_BELT_BAND_START           = 1 << 21,
-        TYPE_BELT_BAND_END             = 1 << 22,
    };

    CoolingLine(unsigned int type, size_t  line_start, size_t  line_end) :
@@ -555,10 +549,6 @@ std::vector<PerExtruderAdjustments> CoolingBuffer::parse_layer_gcode(const std::
            line.type = CoolingLine::TYPE_IRONING_FAN_START;
        } else if (boost::starts_with(sline, ";_IRONING_FAN_END")) { // ORCA: Add support for ironing fan speed control
            line.type = CoolingLine::TYPE_IRONING_FAN_END;
-        } else if (boost::starts_with(sline, ";_BELT_BAND_START")) {
-            line.type = CoolingLine::TYPE_BELT_BAND_START;
-        } else if (boost::starts_with(sline, ";_BELT_BAND_END")) {
-            line.type = CoolingLine::TYPE_BELT_BAND_END;
        } else if (boost::starts_with(sline, "G4 ")) {
            // Parse the wait time.
            line.type = CoolingLine::TYPE_G4;
@@ -901,9 +891,7 @@ std::string CoolingBuffer::apply_layer_cooldown(
                                                               {CoolingLine::TYPE_SUPPORT_INTERFACE_FAN_START, false},
                                                               {CoolingLine::TYPE_IRONING_FAN_START, false}, // ORCA: Add support for ironing fan speed control
                                                               {CoolingLine::TYPE_FORCE_RESUME_FAN, false}};
-    // Belt printers: a band still open from the previous layer has to take the fan back from
-    // the layer-level speed issued just above.
-    bool need_set_fan = m_belt_band_active;
+    bool need_set_fan = false;

    for (const CoolingLine *line : lines) {
        const char *line_start  = gcode.c_str() + line->line_start;
@@ -917,8 +905,6 @@ std::string CoolingBuffer::apply_layer_cooldown(
                if (new_extruder != m_current_extruder) {
                    m_current_extruder = new_extruder;
                    change_extruder_set_fan(true);
-                    if (m_belt_band_active)
-                        need_set_fan = true;
                }
            }
            new_gcode.append(line_start, line_end - line_start);
@@ -971,13 +957,6 @@ std::string CoolingBuffer::apply_layer_cooldown(
            if (m_additional_fan_speed != -1 && m_config.auxiliary_fan.value)
                new_gcode += GCodeWriter::set_additional_fan(m_additional_fan_speed);
        }
-        else if (line->type & CoolingLine::TYPE_BELT_BAND_START) {
-            m_belt_band_active = true;
-            need_set_fan       = true;
-        } else if (line->type & CoolingLine::TYPE_BELT_BAND_END) {
-            m_belt_band_active = false;
-            need_set_fan       = true;
-        }
        else if (line->type & CoolingLine::TYPE_EXTRUDE_END) {
            // Just remove this comment.
        } else if (line->type & (CoolingLine::TYPE_ADJUSTABLE | CoolingLine::TYPE_EXTERNAL_PERIMETER | CoolingLine::TYPE_WIPE | CoolingLine::TYPE_HAS_F)) {
@@ -1070,15 +1049,7 @@ std::string CoolingBuffer::apply_layer_cooldown(
                    m_current_fan_speed = speed;
                }
            };
-            if (m_belt_band_active) {
-                // Belt printers: a tilted layer runs from the belt to the top of the part, so
-                // "the first layers" are a band along the belt rather than the first slicing
-                // layers. Extrusions GCode::_extrude() marks as inside that band print with the
-                // fan off, whatever overhang, bridge or resume request is pending, as the first
-                // layers of a flat bed do. Leaving the band falls through to the branches below.
-                set_fan(0);
-                fan_speed_change_requests[CoolingLine::TYPE_FORCE_RESUME_FAN] = false;
-            } else if (fan_speed_change_requests[CoolingLine::TYPE_OVERHANG_FAN_START]){
+            if (fan_speed_change_requests[CoolingLine::TYPE_OVERHANG_FAN_START]){
                set_fan(overhang_fan_speed);
            } else if (fan_speed_change_requests[CoolingLine::TYPE_INTERNAL_BRIDGE_FAN_START]){ // ORCA: Add support for separate internal bridge fan speed control
                set_fan(internal_bridge_fan_speed);
@@ -21,7 +21,7 @@ struct PerExtruderAdjustments;
 //
 // The simple it sounds, the actual implementation is significantly more complex.
 // Namely, for a multi-extruder print, each material may require a different cooling logic.
-// For example, some materials may not like to print too slowly, while with some materials
+// For example, some materials may not like to print too slowly, while with some materials 
 // we may slow down significantly.
 //
 class CoolingBuffer {
@@ -63,9 +63,6 @@ private:
    unsigned int                m_current_nozzle;
    //BBS: current fan speed
    int                         m_current_fan_speed;
-    // Belt printers: the extrusion being processed lies in the first-layer band above the
-    // belt (between a ";_BELT_BAND_START" and a ";_BELT_BAND_END"). Kept across layers.
-    bool                        m_belt_band_active = false;
 };

 }
@@ -2616,9 +2616,6 @@ void GCodeProcessorResult::reset() {
    long_retraction_when_cut = false;
    timelapse_warning_code = 0;
    printable_height = 0.0f;
-    machine_frame_transform_active = false;
-    belt_tilt_angle = 0.f;
-    belt_z_origin   = 0.f;
    settings_ids.reset();
    filaments_count = 0;
    backtrace_enabled = false;
@@ -2855,32 +2852,6 @@ bool GCodeProcessor::check_multi_extruder_gcode_valid(const int
        return ps;
    };

-    // Belt-printer post-gcode shear/scale/post_remap is applied as the final
-    // step of BeltKinematics::to_machine, so MoveVertex.position is
-    // in the printer's machine frame.  Undo it here so the XY area check
-    // operates in the build-volume frame that printable_area is defined in
-    // (the height checks below are skipped on belt printers).  For non-belt printers
-    // (is_active() == false) apply_inverse is identity and behaviour is
-    // unchanged from before.
-    const bool machine_frame_active = m_machine_frame_transform.is_active();
-    auto compare_pos = [&](const GCodeProcessorResult::MoveVertex &move) -> Vec3d {
-        Vec3d pos = move.position.cast<double>();
-        if (!machine_frame_active)
-            return pos;
-        Vec3d extruder_off = Vec3d::Zero();
-        if (size_t(move.extruder_id) < m_extruder_offsets.size())
-            extruder_off = m_extruder_offsets[move.extruder_id].cast<double>();
-        // Strip plate + extruder offsets to recover the raw machine-frame
-        // coordinate that was emitted into the G-code (see store_move_vertex).
-        Vec3d machine(pos.x() - m_x_offset - extruder_off.x(),
-                      pos.y() - m_y_offset - extruder_off.y(),
-                      pos.z() - extruder_off.z() + m_z_offset);
-        Vec3d build = m_machine_frame_transform.apply_inverse(machine);
-        // Re-apply plate offset so the result matches plate_printable_poly,
-        // which is translated by plate_offset below.
-        return Vec3d(build.x() + m_x_offset, build.y() + m_y_offset, build.z());
-    };
-
    struct GCodePosInfo
    {
        Points pos;
@@ -2892,20 +2863,26 @@ bool GCodeProcessor::check_multi_extruder_gcode_valid(const int
    for (const GCodeProcessorResult::MoveVertex &move : m_result.moves) {
        // sometimes, the start line extrude was outside the edge of plate a little, this is allowed, so do not include into the gcode_path_pos
        if (move.type == EMoveType::Extrude /* && move.extrusion_role != ExtrusionRole::erFlush || move.type == EMoveType::Travel*/) {
-            const Vec3d cp = compare_pos(move);
-            // For belt printers we read Z from the inverse-transformed position
-            // (post-origin-snap, pre-machine-frame).  Otherwise keep the
-            // original print_z source (the slicer's layer-Z comment) so
-            // non-belt behaviour is bit-for-bit unchanged.
-            const float z_for_height = machine_frame_active ? float(cp.z()) : move.print_z;
            if (move.extrusion_role == ExtrusionRole::erCustom) {
-                gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos_custom.emplace_back(to_2d(cp));
+                /*if (move.is_arc_move_with_interpolation_points()) {
+                    for (int i = 0; i < move.interpolation_points.size(); i++) {
+                        gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos_custom.emplace_back(to_2d(move.interpolation_points[i].cast<double>()));
+                    }
+                } else {*/
+                    gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos_custom.emplace_back(to_2d(move.position.cast<double>()));
+                //}
                gcode_path_pos[move.object_label_id][int(move.extruder_id)].max_print_z_custom =
-                    std::max(gcode_path_pos[move.object_label_id][int(move.extruder_id)].max_print_z_custom, z_for_height);
+                    std::max(gcode_path_pos[move.object_label_id][int(move.extruder_id)].max_print_z_custom, move.print_z);
            } else {
-                gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos.emplace_back(to_2d(cp));
+                /*if (move.is_arc_move_with_interpolation_points()) {
+                    for (int i = 0; i < move.interpolation_points.size(); i++) {
+                        gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos.emplace_back(to_2d(move.interpolation_points[i].cast<double>()));
+                    }
+                } else {*/
+                    gcode_path_pos[move.object_label_id][int(move.extruder_id)].pos.emplace_back(to_2d(move.position.cast<double>()));
+                //}
                gcode_path_pos[move.object_label_id][int(move.extruder_id)].max_print_z = std::max(gcode_path_pos[move.object_label_id][int(move.extruder_id)].max_print_z,
-                                                                                                   z_for_height);
+                                                                                                   move.print_z);
            }
        }
    }
@@ -2940,12 +2917,7 @@ bool GCodeProcessor::check_multi_extruder_gcode_valid(const int
                    valid = false;
                }
            }
-            // Belt printers: the Z recorded here grows with belt travel (machine Z with the
-            // frame transform, the slicing-frame Z without it), while printable_height is the
-            // clearance above the belt; the two are not comparable, so the over-height check
-            // is skipped, as the preview's ToolHeightOutside warning already is.
-            // Print::validate() checks the object's height against the clearance.
-            if ( !m_belt_printer && iter->second.max_print_z > plate_printable_height ) { //over height
+            if ( iter->second.max_print_z > plate_printable_height ) { //over height
                m_result.gcode_check_result.error_code |= (1 << 3);
                std::pair<int, int> filament_to_object_id;
                filament_to_object_id.first  = iter->first;
@@ -2986,7 +2958,7 @@ bool GCodeProcessor::check_multi_extruder_gcode_valid(const int
                    }

                // check printable height
-                if (!m_belt_printer && (extruder_id < printable_heights.size()) && (iter->second.max_print_z > printable_heights[extruder_id])) {
+                if ((extruder_id < printable_heights.size()) && (iter->second.max_print_z > printable_heights[extruder_id])) {
                    m_result.gcode_check_result.error_code |= (1 << 1);
                    std::pair<int, int> filament_to_object_id;
                    filament_to_object_id.first  = iter->first;
@@ -3152,13 +3124,6 @@ void GCodeProcessor::apply_config(const PrintConfig& config)

    m_result.printable_height = config.printable_height;

-    // Belt printer: cache the post-gcode machine-frame transform so the
-    // multi-extruder validator can undo it and compare against build-volume
-    // bounds rather than machine-frame positions.
-    m_machine_frame_transform.init_from_config(config);
-    m_result.machine_frame_transform_active = m_machine_frame_transform.is_active();
-    m_belt_printer = config.belt_printer.value;
-
    auto filament_maps = config.option<ConfigOptionInts>("filament_map");
    if (filament_maps != nullptr) {
        m_filament_maps = filament_maps->values;
@@ -3189,32 +3154,6 @@ void GCodeProcessor::apply_config(const DynamicPrintConfig& config)
 {
    m_parser.apply_config(config);

-    // Belt printer: remember the file's belt keys for export_config_for_render(). The
-    // config block lists belt_printer for every printer, so a non-belt file loaded while
-    // a belt printer is selected switches the preview's belt view off, and a belt file
-    // loaded on another printer brings its own tilt, remaps and bed along.
-    m_belt_render_config.clear();
-    {
-        const auto *belt = config.option<ConfigOptionBool>("belt_printer");
-        if (belt != nullptr) {
-            static const char *belt_keys[] = {
-                "belt_printer", "belt_slice_rotation", "belt_slice_rotation_angle",
-                "gcode_remap_x", "gcode_remap_y", "gcode_remap_z",
-                "belt_frame_tilt_decouple", "belt_frame_tilt_angle",
-            };
-            for (const char *key : belt_keys)
-                if (const ConfigOption *opt = config.option(key); opt != nullptr)
-                    m_belt_render_config.set_key_value(key, opt->clone());
-            // The Rev remaps mirror inside the build volume, so the designed view needs
-            // the bed the file was sliced for. Only a belt file may override it.
-            static const char *bed_keys[] = { "printable_area", "printable_height" };
-            if (belt->value)
-                for (const char *key : bed_keys)
-                    if (const ConfigOption *opt = config.option(key); opt != nullptr)
-                        m_belt_render_config.set_key_value(key, opt->clone());
-        }
-    }
-
    //BBS
    const ConfigOptionFloatsNullable* nozzle_volume = config.option<ConfigOptionFloatsNullable>("nozzle_volume");
    if (nozzle_volume != nullptr) {
@@ -3698,7 +3637,6 @@ void GCodeProcessor::reset()
    m_zero_layer_height = 0.0f;
    m_first_layer_height = 0.0f;
    m_processing_start_custom_gcode = false;
-    m_in_config_block = false;
    m_g1_line_id = 0;
    m_layer_id = 0;
    m_cp_color.reset();
@@ -3739,7 +3677,6 @@ DynamicConfig GCodeProcessor::export_config_for_render() const
    config.set_key_value("filament_is_support", new ConfigOptionBools(m_parser.get_config().filament_is_support.values));
    config.set_key_value("filament_type", new ConfigOptionStrings(m_parser.get_config().filament_type.values));
    config.set_key_value("filament_map", new ConfigOptionInts(m_parser.get_config().filament_map.values));
-    config.apply(m_belt_render_config);
    return config;
 }

@@ -4305,25 +4242,6 @@ void GCodeProcessor::process_tags(const std::string_view comment, bool producers
        return;
    }

-    if (boost::starts_with(comment, " CONFIG_BLOCK_START")) {
-        m_in_config_block = true;
-        return;
-    }
-    if (boost::starts_with(comment, " CONFIG_BLOCK_END")) {
-        m_in_config_block = false;
-        return;
-    }
-
-    // Belt printer: derive the physical tilt magnitude from the slicing-rotation
-    // angle header comment (used to enable the preview's belt view). Only the belt
-    // header carries it outside the config block; the config block lists the key
-    // for every printer, belt or not.
-    if (!m_in_config_block && boost::starts_with(comment, " belt_slice_rotation_angle = ")) {
-        try {
-            m_result.belt_tilt_angle = std::abs(std::stof(std::string(comment.substr(29))));
-        } catch (...) {}
-        return;
-    }
    // wipe start tag
    if (boost::starts_with(comment, reserved_tag(ETags::Wipe_Start))) {
        m_wiping = true;
@@ -6220,13 +6138,6 @@ void GCodeProcessor::process_G92(const GCodeReader::GCodeLine& line)
    if (line.has_z()) {
        m_origin[Z] = m_end_position[Z] - line.z() * lengths_scale_factor;
        any_found = true;
-        // Belt only: the start G-code's purge-blob advance + G92 Z0 resets leave a constant
-        // machine-Z origin offset here; the designed-view back-transform subtracts it so
-        // toolpaths map to the model's belt coordinate (gcode Z). Gated on belt_tilt_angle
-        // (set from the belt header, parsed before the body) so non-belt G-code processing
-        // is byte-identical — no unconditional work on the shared path.
-        if (m_result.belt_tilt_angle != 0.f)
-            m_result.belt_z_origin = m_origin[Z];
    }

    if (line.has_e()) {
@@ -7205,22 +7116,6 @@ void GCodeProcessor::store_move_vertex(EMoveType type, EMovePathType path_type,
        m_result.print_statistics.total_travel_distance += m_travel_dist;
    }

-    // During the start G-code "prepare" stage the toolhead Z is not yet a real
-    // print height on a normal printer, so it is pinned to the first-layer height
-    // to keep the preview tidy. Belt printers are the exception: there the Z is
-    // written explicitly by the belt kinematics and the designed-view back-transform
-    // couples machine Z into the rendered model Y (the belt tilt mixes the height
-    // and belt-feed axes). Overriding Z therefore back-transforms the last
-    // prepare-stage move (the unretract before the first extrusion) to model
-    // Y ~= 0, and the libvgcode path builder then draws a phantom extrusion
-    // segment from Y ~= 0 to the first real toolpath. Keep the real Z for belt
-    // printers so prepare-stage moves map correctly. Gated on belt_tilt_angle (set
-    // from the G-code header before the body is processed) so non-belt processing
-    // is byte-identical.
-    const float store_z = (m_processing_start_custom_gcode && m_result.belt_tilt_angle == 0.f)
-        ? m_first_layer_height
-        : m_end_position[Z] - m_z_offset;
-
    m_result.moves.push_back({
        m_last_line_id,
        type,
@@ -7228,7 +7123,7 @@ void GCodeProcessor::store_move_vertex(EMoveType type, EMovePathType path_type,
        static_cast<unsigned char>(filament_id),
        m_cp_color.current,
        //BBS: add plate's offset to the rendering vertices
-        Vec3f(m_end_position[X] + m_x_offset, m_end_position[Y] + m_y_offset, store_z) + m_extruder_offsets[filament_id],
+        Vec3f(m_end_position[X] + m_x_offset, m_end_position[Y] + m_y_offset, m_processing_start_custom_gcode ? m_first_layer_height : m_end_position[Z]- m_z_offset) + m_extruder_offsets[filament_id],
        static_cast<float>(m_end_position[E] - m_start_position[E]),
        m_feedrate,
        0.0f, // actual feedrate
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Hanif Koh	2f140a1208	Add Missing Includes to the Plugin JSON Depth Test	2026-10-07 19:38:03 +08:00
Hanif Koh	cb7d2c698d	Cap Recursion Depth in the Plugin JSON Converters	2026-10-07 19:33:08 +08:00
yw4z	a38e6c61f2	Show dummy image for printers without cover on printer selectiondialog (#16235 ) init	2026-10-07 12:57:28 +03:00
HanifKoh	f9ddb23804	Keep Each Filament's Device Drying Values When the CLI Merges Filaments (#16157 ) The device drying options hold several values per filament, as many as the filament preset gives, and a project stores them as the filaments' values one after another. The CLI filament merge wrote them like an option with one value per filament, putting each preset's first value at the filament's own index, so a project with three filaments whose preset gives "1", "0" was exported with 1;1;1;0;1;0 where the GUI writes 1;0;1;0;1;0. The merge now leaves these options out of the per-filament pass and rebuilds them afterwards from every filament's values in slot order. Without a fixed number of values per filament one slot cannot be replaced in place, so the stored values are kept when any slot has no config to rebuild from.	2026-10-07 15:54:53 +08:00
HanifKoh	ff8aebe76f	Allow Unsigned Executable Memory in the macOS Entitlements (#16203 ) The Bambu network plug-in's code protector rewrites one page of its own signed __TEXT after loading. The hardened runtime tolerates that until the page is evicted; the next read of it then kills OrcaSlicer with CODESIGNING Invalid Page. Bambu Studio signs with allow-unsigned-executable-memory for this reason; with it added, the same build survives critical memory pressure that killed it in 30 s without.	2026-10-07 15:52:18 +08:00
HanifKoh	a56d1bf33e	Keep a Project's Changed Values on Extruder Variants It Doesn't List (#16107 ) A project's listed settings are carried onto its base preset by update_non_diff_values_to_base_config, which matched variants by exact name and id. A variant the base gained after the project was saved got the base's value, while the same value in a user preset now falls back to the preset's first variant of that extruder. So an old project opened with its printer preset already modified, and saving it wrote the base's values into the 3MF. The function now maps variants with map_variant_indices, as update_diff_values_to_child_config does: a base variant the project does not list takes the project's first variant of the same extruder. The variant lists themselves stay the base's, so a fallback never writes one variant's name over another's.	2026-10-07 15:51:49 +08:00
HanifKoh	662a8e340d	Support the 02.08.04 Bambu Network Plug-in Series (#16202 ) The 02.08.02 series appended queue_plate_id to PrintParams and nothing after it changed the ABI OrcaSlicer calls, so adding the field brings the current layout up to 02.08.04. Make 02.08.04 the latest series and drop 02.08.01 from the whitelist: its PrintParams no longer matches, and its malformed bind table is refused by dyld on macOS 27, so it cannot load there. A stored 02.08.01 falls back to the latest series through the existing unsupported-version path.	2026-10-07 15:51:21 +08:00
HanifKoh	6639a32b0c	Remove using namespace std from json_diff.hpp (#16222 ) The directive sat at global scope in a header that DeviceManager.hpp includes, so most of the GUI compiled with all of std in the global namespace. 42 files had come to rely on it, mostly for string, vector and unordered_map, four of them for the ""sv and ""ms literals. Those sites are qualified. GCodeViewer.cpp spelled the type as std::vector<::string>, which only resolved through the directive. The files that use the ""sv and ""ms literals get a file-scope "using namespace std::string_view_literals;" or "using namespace std::chrono_literals;", as other sources already do.	2026-10-07 14:58:49 +08:00
SoftFever	1ec195a221	Update build commands in AGENTS.md to use Release configuration	2026-10-07 14:44:04 +08:00
Ian Chua	e5324ae319	Fix Orca Cloud API requests to use HTTPS (#15391 ) # Description The default Orca Cloud API URL omits its scheme, so libcurl interprets it as HTTP and follows the server redirect to HTTPS. Recent libcurl versions intentionally do not forward the `Authorization` header across protocol/port-changing redirects, causing Orca Cloud profile sync to receive HTTP 401 `missing_authorization` responses and eventually log the user out. Use the HTTPS API URL directly. Besides restoring sync with current libcurl versions, this improves security by preventing the bearer access token from being sent in the initial unencrypted HTTP request. # Screenshots/Recordings/Graphs N/A — no UI changes. ## Tests - `git diff --check` - Confirmed with current libcurl that the scheme-less URL redirects and loses the authorization header, while the direct HTTPS URL retains it	2026-10-07 14:30:07 +08:00
HanifKoh	559ad3e2b7	Flag Global Usings in Headers with clang-tidy (#16225 ) A using-directive or using-declaration in the global namespace of a header reaches every file that includes it, and a using-declaration also makes the include checker treat that header as the one to include for the name. google-global-names-in-headers reports both, on changed lines like the existing check, so headers that still have one are not held to it until the line is touched. The check does not see a using inside a namespace. clang_tidy_diff.py's closing message assumed every finding was a missing include; it now says other findings need a manual fix.	2026-10-07 14:23:11 +08:00
HanifKoh	de6b0b9f2d	Remove Header Usings and Aliases Nothing Depends On (#16224 ) - ClipperUtils.hpp imported jtMiter, jtRound and jtSquare into the global namespace for every includer. No code names them there. - BBLStatusBar.hpp, BBLStatusBarBind.hpp, BBLStatusBarPrint.hpp, BBLStatusBarSend.hpp and ProgressStatusBar.hpp re-exported their class into Slic3r::GUI. Nothing refers to the class through that namespace. - Jobs/SendJob.hpp, Jobs/BindJob.hpp, Jobs/UpgradeNetworkJob.hpp and AuxiliaryDataViewModel.hpp declared "namespace fs = boost::filesystem;" at global scope without using it.	2026-10-07 14:23:00 +08:00
HanifKoh	f02292f163	Stop Exporting Names Through Usings in GUI and Voronoi Headers (#16223 ) Each of these headers put a using or namespace alias at global or namespace scope, which every includer inherited: - BBLTopbar.hpp: "using namespace Slic3r::GUI;" at global scope, reached through MainFrame.hpp. Seven source files used GUI names unqualified outside the namespace because of it, one of them as "::RadioBox". - IMSlider.hpp and TickCode.hpp: "using namespace CustomGCode;" inside Slic3r. - ProjectTask.hpp, Jobs/PrintJob.hpp and ConfigWizard_private.hpp: "namespace fs = boost::filesystem;". PresetBundle.cpp and GUI_App.cpp had no alias of their own. - VoronoiUtils.hpp: "using VD = Slic3r::Geometry::VoronoiDiagram;" at global scope. The headers now spell the names out. Source files that used them get the qualifier, or a using of their own where there are many uses.	2026-10-07 14:22:45 +08:00
HanifKoh	23546e71ce	Remove Unused Usings and the Includes Kept Only for Them (#16220 ) 151 using-directives, using-declarations, type aliases and namespace aliases in source and test files that nothing refers to: the name is never used, it duplicates a using already in scope, or the code sits inside the namespace it names. Each one was removed on its own and the file still compiled, both as it is and with every header-level using taken away, so none of them was only redundant because a header leaks the same name. With the using gone, 28 #include lines and one forward declaration had no other reference left in their file (boost/optional.hpp without any optional, property_tree headers without any ptree) and go with it. No header is touched.	2026-10-07 14:22:32 +08:00
HanifKoh	73d32d4791	Stop Leaking json Through Headers and Drop Includes Kept Only for the Name (#16221 ) * Stop Leaking json Through Headers and Drop Includes Kept Only for the Name AppConfig.hpp, DeviceManager.hpp and UserManager.hpp carried a global "using namespace nlohmann;", json_diff.hpp a global "using json = nlohmann::json;" and PrinterFileSystem.h a global "using nlohmann::json;". Every file that included one of them, directly or not, could write a bare json, and 63 did without declaring it. The last two also made the include checker treat json_diff.hpp and PrinterFileSystem.h as the headers that provide json, so they were included from files that use nothing else from them: 57 of the 59 includers of json_diff.hpp never name json_diff. The five statements are removed. Headers that use the type now spell nlohmann::json, source files declare their own "using json = nlohmann::json;", and the includes that only supplied the name are dropped or replaced by <nlohmann/json.hpp>. Eight files reached json_diff.hpp only through an include that is now gone and with it lost that header's "using namespace std;". The std names they used unqualified are qualified. * Declare json in OrcaSlicer.cpp on Every Platform OrcaSlicer.cpp had its "using namespace nlohmann;" and the json include inside the Linux-only include block, so on Windows and macOS it took json from AppConfig.hpp's global directive, which is gone. The include and a "using json = nlohmann::json;" now sit outside the block.	2026-10-07 14:22:16 +08:00
AveryanAlex	67ff6bd34b	Fix Orca Cloud API URL scheme	2026-08-26 19:52:16 +03:00