* Normalize the junction direction vector over XYZE
calc_vmax_junction_deviation() treats the dot product of two jd_unit_vec as a
cosine, but the vectors were scaled by 1 / block.distance, which is the XYZ
length. On an extruding move the E component then pushes the 4D norm above 1 and
the dot product below -1, so the corner reads as straighter than it is and is
planned too fast -- the more so the higher the flow. Measured on a 6 degree
corner at scv 5: 86.9mm/s with no extrusion, 94.4mm/s at 0.029mm/mm, 150.0mm/s
at 0.1mm/mm.
Neither firmware does that. Marlin normalizes over XYZE for any extruding move
(planner.cpp: `if (... || esteps > 0) normalize_junction_vector(unit_vec)`) and
Klipper leaves E out of the cosine entirely, dotting only axes_r[0..2]
(toolhead.py::Move.calc_junction). Normalizing satisfies both: with E normalized
in, the cosine differs from the XYZ-only one by ~1e-5 at printing flow rates.
This is a deliberate divergence from PrusaSlicer, which still scales by
1 / distance -- it carries an older Marlin's behaviour.
Travel moves are unaffected, their vector was already unit length.
Reported by Copilot in review of #15304.
* Test that extrusion rate does not change corner planning
The junction deviation tests were all travel-only, which is exactly why the E
component of the junction vector went unchecked. Cover it: the same corner has
to be planned the same whether nothing, an ordinary 0.42 x 0.2 line, or a fat
large-nozzle line is extruded through it, on both Klipper and Marlin 2.
Reported by Copilot in review of #15304.
* Plan corners with junction deviation where the firmware uses it
The time estimator only ever had the classic per-axis jerk model, which limits a
corner by the largest single-axis component of the velocity change. That is
anisotropic: the same corner is allowed sqrt(2) more speed on a diagonal than on
an axis, which paints a four-lobed ripple around every circular wall in the
actual speed and actual flow views, worst on small parts whose walls are made of
short segments.
Klipper has no classic jerk at all and Marlin 2 has none while M205 J is in use;
both plan corners with junction deviation, which sees only the corner angle. Add
that model and use it for those machines:
- Klipper: derived from the square corner velocity, as the firmware does
(jd = scv^2 * (sqrt(2) - 1) / max_accel), reading the scv from
machine_max_jerk_x, where process_SET_VELOCITY_LIMIT() already stores
SQUARE_CORNER_VELOCITY.
- Marlin 2: machine_max_junction_deviation, which was already loaded into the
machine limits but never reached the planner.
- Every other flavor keeps the classic jerk path unchanged.
The model has no per-axis jerk floor, so this also drops the hard slow spot the
estimator drew at the start of every loop from machine_max_jerk_e.
Toolpaths are unaffected: on a full export the only lines that change are M73.
The junction deviation maths, including Marlin's JD_HANDLE_SMALL_SEGMENTS arc
approximation, is ported from PrusaSlicer's src/libslic3r/GCode/GCodeProcessor.cpp.
The Klipper mapping is not in PrusaSlicer, which ignores SET_VELOCITY_LIMIT.
* Add tests for junction deviation corner planning
Cover the three properties the change rests on:
- a right angle on Klipper is planned at exactly the square corner velocity,
the identity that makes the scv to junction deviation mapping correct, and a
shallow corner is planned far faster than per-axis jerk allows;
- junction deviation gives the same speed whatever the corner's orientation,
while classic jerk keeps its sqrt(2) spread, which is the four-lobed ripple;
- machines that do not plan with junction deviation are provably untouched,
including a Marlin 2 printer that has it disabled.
## Problem
`Toolchange temperature commands are unchanged when the wipe tower wait
is off`
(added in #15144) fails on both Linux runners and passes on Windows and
macOS.
It is the only failing test in the suite, and it has been failing on
main since
that PR merged.
| Job | Result |
| --- | --- |
| Windows x64 / Unit Tests | pass |
| Windows arm64 / Unit Tests | pass |
| macOS arm64 / Unit Tests | pass |
| Linux x86_64 / Unit Tests | **fail** |
| Linux aarch64 / Unit Tests | **fail** |
From the merge commit
([Linux
x86_64](https://github.com/OrcaSlicer/OrcaSlicer/actions/runs/31072382258/job/92531704095),
[Linux
aarch64](https://github.com/OrcaSlicer/OrcaSlicer/actions/runs/31072382258/job/92531704075)),
still reproducing on current main:
```
first difference at trace entry 29
main: M104 S240 T0 ; preheat T0 time: 31s lead 30.9s
branch: M104 S240 T0 ; preheat T0 time: 30s lead 30.3s
```
## Cause
Each preheat entry records the same quantity twice: `lead` at one
decimal, and
`time:` inside the command text as that value rounded to a whole second.
`split_lead` already compares `lead` with a 0.5s tolerance and explains
why the
estimate moves. `time:` sits in the exactly-compared command text, so it
never
got that tolerance — and being rounded, it flips on a drift far below
0.5s
(30.4 and 30.6 render as `30s` and `31s`). Entry 29 is the only entry in
the
163-entry golden whose lead rounds up; every other preheat sits at
30.0–30.4 and
rounds down, which is why it is the only one that fails.
The variation is per-toolchain, not run to run. Both Linux arches
produce
exactly `lead 30.3s`; Windows x64/arm64 and macOS arm64 all produce
exactly
`30.9s`. Repeated local runs are byte-identical. macOS arm64 passing
while Linux
aarch64 fails rules out the ISA — it is floating-point accumulation over
a few
thousand move durations under GCC vs Clang vs MSVC.
The mechanism makes it discrete rather than gradual: the backtrace parks
the
preheat at the first exported line at least `preheat_time` before the
tool
change, so `lead` is `preheat_time` plus the leftover of whichever move
that
landed on. A sub-tenth difference selects the neighbouring move and
`lead` steps
by that move's whole duration.
Entries 1–28 match exactly, including five earlier preheats whose leads
fall
inside the existing tolerance, so the toolpaths themselves are
identical. I also
reverted the two prime-tower commits that landed between the golden's
capture
point and now, rebuilt, and got a byte-identical trace — this is not
behavioural
drift.
That also rules out regenerating the golden: no single capture satisfies
all
three toolchains, and recapturing on Linux would turn the three
currently-green
runners red.
## Fix
Test-only.
- `lead` keeps a tolerance, widened to 1.5s (measured drift 0.6s; a
preheat
actually leaving its backtrace position would move by tens of seconds).
- `time:` is **not** compared across runs at all. Being a rounding of
`lead`, it
carries nothing the tolerance does not already cover, and comparing it
across
runs can only reproduce the flake. It is instead checked against its own
entry's `lead` — a correct rounding keeps `|time - lead| <= 0.5`.
That second point matters: simply tolerating `time:` numerically would
have made
the test blind to a real change, because drift and a wrong rounding both
move it
by 1. The self-consistency check keeps that coverage. I verified it by
changing
`(int) std::round(time_diffs[0])` to `(int) time_diffs[0]` in
`GCodeProcessor::export_lines` — the test fails with
`"time:" is not its entry's "lead" rounded to a whole second`, where a
plain
tolerance would have passed silently.
Everything else is still compared exactly: all M104/M109 values, tool
ids,
block markers, ordering, entry count, and the annotation text including
its
trailing `s`. The other 138 entries remain byte-exact.
No production code, no golden regeneration. The golden file and these
helpers
are used by this one test and nothing else, and the tolerance only
widens, so
Windows and macOS keep passing unchanged. A note is added to the
golden's header
so the next mismatch in those fields is not "fixed" by recapturing.
## How to verify
Before, on Linux:
```bash
git checkout main && ./build_linux.sh -t
ctest --test-dir build/tests -R "Toolchange temperature commands are unchanged" --output-on-failure
# fails at trace entry 29
```
After:
```bash
cmake --build build --config Release --target fff_print_tests
ctest --test-dir build/tests --output-on-failure # 463/463
```
Deterministic tests for: coincident brim at first belt contact not dropped
(C), single- and multi-extruder brim tool selection with no doubling (B),
multi-object apron ordering, inner-only+leading-only not rejecting prime
tower/spiral (D), and inner/holed + leading-edge-only geometry.
The placement clamps and the tower-approach router both stood in the bed's
bounding box for the bed itself, so on a delta or hexagonal bed the prime tower
could be parked in a corner that does not exist and the nozzle could be routed
across it. Both now test the real printable outline, slicing reports a tower
that does not fit instead of printing it off the bed, and a tower parked near an
edge is routed along the clamped side rather than falling back to a straight
line across the tower.
Also fixes the placement validation rotating the tower hull by degrees read as
radians about the plate origin, and never rotating the generated tower footprint
at all.
Six issues found by reviewing the previous commit against belt-printer, two of
them release-blocking.
Data race (high). Print::process() runs generate_support_material() for all
objects in a tbb::parallel_for, and make_belt_brim() runs at its tail, but
belt_brim_obstacles() read every OTHER object's support_layers() - which a
concurrent task may be inside clear_support_layers() deleting. That is a
use-after-free, and even when it survives, the obstacle set depends on which
object finishes first. Only this object's own supports are consulted now; they
are complete at that point. Foreign objects still contribute their slices,
which are finished and immutable before the support phase.
Apron bands dropped (high), two separate causes. An apron band prints below
its own object's first layer, but another object can already be printing at
that print_z, in which case process_layer() takes the ordinary path and never
emitted the band - the emission is now shared by both paths. Separately, a
band whose print_z matched a support layer of the SAME object was overwritten
in the print-wide merge, which keeps one record per object per z and could not
detect the collision because LayerToPrint::layer() is null for a band. The
per-object pairing loop is now a three-way merge over object, support and apron
streams, so each object contributes at most one record per z.
Multi-instance was far too strict (medium). It refused belt brim for every
multi-instance object, killing plain brim width and inner brim too, and only
warned when a leading length was set. Only movement ALONG the belt changes an
instance's belt-floor Z, so copies side by side ACROSS the belt share one set of
bands perfectly well; belt_brim_instances_compatible() now tests just that, and
the warning fires whenever the brim is actually suppressed.
Apron layer bookkeeping (medium). Apron layers count toward m_layer_count and
advance m_layer_index, but emitted no Z/height tags, left m_last_layer_z,
m_max_layer_z and m_last_height stale - so the first object layer computed its
height against a pre-apron Z - and skipped before_layer_change_gcode and
layer_change_gcode entirely. All of that now matches the ordinary path.
Obstacle cost (low). belt_brim_obstacles() ran a full-plate union per band.
A bounding-box pre-filter drops non-overlapping objects before materialising any
polygon, and the union is skipped for trivial inputs.
Deliberately unchanged: every apron band still reports cooling layer_id 0.
CoolingBuffer uses it for the initial_layer_fan_speed override and the
close_fan_the_first_x_layers gate, and every band lies on the belt plane itself,
so it is all first-layer material by the only definition that means anything on
a belt. Numbering the bands would ramp the fan up while still printing on the
belt. Now documented at the assignment rather than left implicit.
A belt printer slices in a rotated frame, so the belt surface is a tilted
plane rather than the Z=0 bed plane. Each slicing layer touches the belt
only along a narrow strip at its leading edge - about 0.2mm at 45 degrees -
so a part's first layer is really a first line, with almost no contact patch
to hold it down while the belt drags it forward. Brim was hard-disabled on
belt printers, leaving no remedy at all.
Generate the brim on the belt plane instead. The object's belt footprint is
the union over layers of each slice clipped to that layer's contact band; the
brim is offset from it in a "flattened" frame where the shear axis is
stretched by 1/cos(tilt), so ordinary Clipper offsets measure true on-belt
distance. It is emitted as cross-belt lines, one per layer band, anchored to
a fixed fraction of the band so every line shares a nozzle-to-belt clearance
and therefore comes out the same width; flow is matched to the resulting band
pitch, keeping the sheet uniform and gap-free.
Three new controls, all belt-only:
* Leading brim length - extends the brim ahead of the part along the belt,
on every downhill-facing edge of its contact area. This apron necessarily
prints BELOW the object's first layer, since layer 0 is the part's leading
contact, so it needs brim-only bands of its own.
* Extra brim width - widens the brim sideways across the belt only.
* Brim type "Leading edge only" - brim at the part's first belt contact and
nothing after it. Appended last in BrimType so no existing value shifts;
degrades to an outer brim off belt printers, with a warning.
The apron bands are lightweight records rather than a Layer subclass, so no
fabricated Layer::id() can leak into initial-layer temperature selection, the
spiral vase probe, cooling or gradual interpolation. They are generated in
posSupportMaterial because their print_z values must exist before ToolOrdering
is built at psWipeTower, and they are emitted from a short dedicated branch in
process_layer that runs before any layer pointer is dereferenced.
The footprint is closed before offsetting outwards: a belt contact patch is
often a broken-up strip, and the merged offset rings of two islands closer
than 2 x brim_width would otherwise fill the space between them - space that
lies under the part.
Also fixes a pre-existing bug where PrintObject::get_first_layer_bbox()
overwrote a valid bbox with an unassigned one on any belt printer with a brim
configured, because has_brim() was true while make_brim() returned early.
Belt brim is refused alongside the prime tower and spiral vase, and requires
one instance per PrintObject - translating an instance along the belt axis
changes its physical belt-floor Z. Untilted belt printers are unchanged: they
still get no brim, since the plate brim is emitted out of skirt_brim_groups(),
which _make_skirt() never builds for a belt printer.
Adds a printer option that picks up the new tool without a blocking temperature
wait, travels to the wipe tower, and waits there right before purging, parked
beside the tower so the ooze from the heat-up lands next to it rather than on the
model. The incoming filament's target is raised ahead of the tool change, so the
heat-up overlaps both the change itself and the travel to the tower.
Off by default, and only offered for multi-extruder printers using a Type 2 wipe
tower; the generic toolchanger profile enables it.
The wipe tower's "Delay after unloading" never happened on Klipper. It was
emitted as G4 S<seconds>, and Klipper's G4 reads only the P parameter, in
milliseconds, so the pause was silently skipped. The option now produces a
dwell Klipper actually performs.
Also corrects the planner flush rationale, which cited an extruder position
reset that Klipper resolves at parse time and does not need synchronized, and
adds end-to-end coverage that slices a two-filament print and checks the
emitted wipe tower G-code on both a Klipper and a non-Klipper flavor.
No change to any other firmware flavor's output, and no shipped profile sets a
non-zero delay, so no shipped profile's output moves either.
The wipe tower emitted G4 S0 to make the firmware finish its queued moves
before commands that must not take effect early. Klipper's G4 reads only the
P parameter, so that flush never happened there and a temperature change could
land seconds ahead of the moves it was meant to follow. Klipper now gets M400
instead, through one helper shared by both wipe tower implementations.
No change to any other firmware flavor's output, so no shipped profile or saved
project is affected.
Processes a minimal belt start sequence through GCodeProcessor::process_buffer
and asserts the move preceding the first extrusion keeps its real Z, so it can
no longer back-transform to model Y~=0 and produce the phantom extrusion line.
Belt printers are non-Bambu, so the processor uses the compatible reserved
tags ("TYPE:"); the test sets s_IsBBLPrinter=false (saved/restored via an RAII
guard) to mirror the real printer. Proven to fail without the fix (the
prepare-stage move's Z is pinned to the first-layer height, 0 here) and pass
with it.
Locks in the fix from the previous commit. A fresh BeltGCodeWriter has an
unestablished planar position (is_current_position_clear() == false) and its
m_pos.xy is the origin (0,0). With a pending NormalLift z-hop, travel_to_xyz
used to lift in place via _travel_to_z(), which in belt mode shears the origin
into a machine Y ~= the layer Z — a move far up the gantry.
The test configures an X-tilt 45 deg belt transform, defers a z-hop via
lazy_lift, travels to a near-belt first point (transformed gantry Y ~= 1mm),
and asserts no emitted move has Y anywhere near the layer Z. Verified to fail
without the fix (max emitted Y = 100.0 vs the destination's ~1.0) and pass with
it.
# Description
Changing a slicing plugin's configuration had no effect on the sliced
result until you forced a re-slice some other way; it now applies
immediately. Print, printer and filament presets also keep their plugin
configuration separately, so configuring a plugin on one no longer wipes
out what you set on another.
A plugin's custom configuration page gets the same round of improvements
in both the Plugins dialog and the per-preset dialog: it follows the
app's light/dark theme, keeps its state while you edit instead of
resetting under the cursor, and can tell whether it is being edited
globally or for a preset, so "Restore defaults" can be labeled for what
it will actually do. The two bundled examples show this off — Twistify
now ships a custom configuration UI, and Inspector is themed, groups
# Screenshots/Recordings/Graphs
https://github.com/user-attachments/assets/02ca062a-5143-49a3-abe0-a2a040b3a928
## Tests
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Resolve five conflicts, all of which needed both sides rather than a pick:
- BackgroundSlicingProcess: ours was a pure tabs->spaces reformat of base, so
keep main's per-filament volume/nozzle map read-back (its only change here).
- GUI_App: main's #12506 else-if attached to an `if` this branch deleted;
re-expressed onto the same-agent early-return path (the agent factory caches
per id, so pointer equality is the same predicate).
- MainFrame: both sides relocated Sync Presets independently; keep main's
push_notification plus the branch's Plugins menu items.
- Tab: the "TODO: Orca: Support hybrid" blocks were unchanged base, not a branch
decision; take main's enabled Hybrid to match the already auto-merged siblings.
- test_config: union of both sides' cases (6 plugin + 9 multi-nozzle).
The Unit Tests job sparse-checks-out only .github/scripts/tests, so the
baked-in absolute PROFILES_DIR was missing at runtime; the shipped-profile
test then read a non-existent JSON and null-dereferenced in opt_string.
Check out resources/ in the unit-test job, and guard the test helper to
skip when the profile is absent and require the key before dereferencing.
A dual-nozzle H2C print with support filament hangs at its first nozzle
switch. The emitted file shows the change-filament block's M620 O ordinal
jumping from O1 straight to O230, plus a duplicate "M1020 S<n>" toolchange
command right after every change block. Two causes, fixed together because
they interlock (the ordinal check keys off the same toolchange detection
that suppresses the duplicate):
- append_tcr incremented m_toolchange_count once per prime-tower visit
(roughly once per layer), while the change-filament template only emits
its M620 O{toolchange_count + 1} line on real filament changes. With 229
change-less sparse tower layers below the first support layer, the first
real change reported ordinal 230. The counter now advances only when the
expanded change block really contains a toolchange command, and the
placeholder exposes the upcoming change's ordinal (count + 1). The
set_extruder path already counted per real change and is unchanged.
- toolchange_prefix() returned "M1020 S" for BBL printers, so the
custom_gcode_changes_tool() dedup could never match the stock profiles'
line-leading "T[next_filament_id] ..." commands and the writer's own
toolchange was appended after every change block on dual-extruder
machines. The prefix is now the plain "T" (the manual-filament-change tag
branch stays first), and the M1020 form moved into GCodeWriter::toolchange()
as an explicit branch that also carries the nozzle:
"M1020 S<filament> H<nozzle>". The nozzle parameter is signed on purpose:
the null-safe nozzle lookup legitimately yields -1, matching the stock
templates' own H-1 convention.
The prefix change also lets the CoolingBuffer recognize the change blocks'
T commands as tool boundaries on BBL printers (its per-filament attribution
previously keyed off the duplicate M1020, or nothing at all on
single-extruder models); its existing out-of-range guard ignores
T1000-class machine commands.
Verification: full suites green (libslic3r 48998 assertions / 169 cases;
fff_print 692 / 65 including three new scenarios - writer emission per
printer kind, dedup + ordinal progression on sequential prints, and a
prime-tower regression scenario verified to fail against the old per-visit
counting). Byte gate: 18 of 20 fixtures bit-identical; the sequential repro
differs by exactly its 3 removed duplicate M1020 lines, deterministic
across two runs. Reslicing the field project that exposed the hang yields
M620 O1 followed by a gapless O2..O59 and zero duplicate M1020 lines.
Co-authored-by: songwei.li <songwei.li@bambulab.com>
The time estimator's speed/acceleration limits were indexed by time
mode only, reading slot 0 of the per-(extruder x volume-type) arrays
the multi-extruder profiles already carry (H2C 0.4: 8 entries, H2D
0.4: 10). Every move was therefore modelled with the first machine
slot's limits regardless of which nozzle variant was printing -
estimation fidelity only, since emitted feedrates/accelerations are
decided on the slicing side.
Now the estimator resolves the machine slot of the nozzle currently
mounted in the active extruder: the nozzle grouping context is handed
to the processor BEFORE the streaming replay (new member + setter -
deliberately separate from the post-stream result-field handover that
gates the richer change-time model, whose timing is unchanged), the
occupancy recorder is populated on every filament change (bookkeeping
decoupled from the gated time model; recorder writes have no time
effect), and get_machine_config_idx maps (volume type x extruder type
x extruder) to the slot via the printer's variant layout, newly
carried on the processor result. The feedrate/acceleration getters
gain a slot parameter indexing [slot*2 + mode]; jerk and the
print/travel/retract accelerations stay mode-only. Reloaded sliced
projects re-estimate with the result's saved grouping context;
imported bare g-code degrades to slot 0 - the historical read.
M201/M203 write the parsed value into EVERY slot's mode entry (a
firmware envelope change is global), which keeps per-slot reads in
lockstep with the mode-only reads they replace: the fleet emits
envelope lines before any motion, so estimates - hence the estimated
time header, M73 lines, and every other byte - are unchanged (20/20
pinned-slice byte gate bit-identical, incl. the sequential repro
sliced twice). Fidelity improves where envelope emission is off or a
migrating per-layer plan moves filaments across variants.
Tests: a stub-driven processor case proving the slot follows the
active nozzle through the exact production path (T..H.. commands,
fallback recorder bookkeeping, 4x time ratio on the slow variant),
that emitted M201/M203 reach every slot, and that a missing context
degrades to slot 0. Suites green (libslic3r 48998/169, fff_print
667/62).
When a per-layer nozzle grouping migrates a filament across nozzle
variants, the write-back turns two groups of config arrays from
filament-indexed into column-indexed: the per-variant filament options
(one column per variant a filament uses) and the merged extruder
retract overrides (resized to the column count by apply_override).
Export-path readers that still indexed them with the raw filament id
read a neighbor's column for every filament ordered after a migrating
one: toolchange/standby temperatures (M104/M109), retraction lengths
and feedrates, wipe distance, z-hop types, air-filtration keys, and -
through the Extruder's cached flow term - the extrusion E of every
move.
Now every such read resolves its column through the existing
layer-aware resolver (get_filament_config_index ->
Print::get_filament_config_indx), which returns the raw filament id
whenever no per-layer grouping result is published, so static prints
are byte-inert by construction. The Extruder itself has no layer
knowledge, so it gains an injected config column (set_config_index,
default = filament id) that the generator refreshes at the only two
resolution-changing events - layer change and writer toolchange - and
that re-syncs the cached e_per_mm3 flow term. Old-filament reads
resolve at the current layer, which is safe because the per-layer maps
are gap-filled carry-forward. Whole-array placeholder copies
(toolchange temperature overrides) are rebuilt in filament order,
mirroring the existing per-variant placeholder remap. The resolvers
move to the public section so non-friend helpers (ooze prevention) can
resolve too.
Documented, deliberately unchanged: the wipe tower's per-filament
parameter rows (no layer dimension; tower x per-layer grouping is a
follow-up), travel_slope's physical-extruder read, estimator pre-heat
bookkeeping temps, and index-0 header diagnostics.
Verification: new Extruder column-injection scenario (defaults, column
follow + flow-cache rescale, filament-indexed reads unaffected, reset
semantics) and a migrating write-back case proving the column shift for
filaments ordered after a migrator and the resolver tracking it (11 +
14 assertions); suites green (libslic3r 48998/169, fff_print 655/61);
20/20 pinned-slice byte gate bit-identical (incl. sequential repro x2
deterministic).
Experimental fuzzy on geometry
Mirrors libslic3r's fuzzy_polyline on the slice contours at Step.posSlice,
demonstrating the count-changing mutation idiom (rebuild ring via
Polygon.append, write back via ex.contour / ex.set_holes). C++ analogue
test proves area preservation, cascade, and bounded displacement.
The Print-level LayeredNozzleGroupResult had a single producer, the
by-layer branch of ToolOrdering, which is gated to non-sequential prints.
The by-object branch in Print::process computed a grouping only in auto
map modes and never stored it, so a sequential slice exported with a null
group result: the per-nozzle placeholder tables came up empty and any
start g-code indexing nozzle_diameter_at_nozzle_id[] aborted with
"Indexing an empty vector variable". A prior by-layer slice masked the
bug by leaving its (never cleared) result on the Print.
Now the by-object branch runs get_recommended_filament_maps in every
static map mode (in manual modes the result mirrors the user's
assignment, deviations throw as in by-layer) and publishes it
print-wide. The config write-back stays gated to auto modes: in manual
modes it would only re-store the pre-slice values.
Regression test: a two-object by-object print must publish a non-null
group result and resolve nozzle_diameter_at_nozzle_id[] in start g-code
(both fail without the fix). Suites green (libslic3r 48929/162,
fff_print 633/60); 18-fixture byte gate identical; the by-object repro
project goes from the export error to valid g-code, determinism x2.
Review the slicing-pipeline plugin comments for context a reader of the source
alone cannot follow, and rewrite them to stand on their own:
- drop pointers to uncommitted design/plan material ("§3.6 (Twistify design)",
"the brief's note", "Fix 4(a)/4(b)")
- fix dangling references to code this branch removed: the retired set_slices()
and view mutators, the former G-code post-processing capability/trampoline,
the "Post-processing" capability family, the pre-refactor array helper
- drop "v1"/"in v1" phase labels, keeping the behavior they described
- correct stale cross-references: Twistify.py -> the real sample path;
test_plugin_host_api.cpp:32-40 -> import_orca_module in python_test_support.hpp;
"the binding"/"graphs above" -> the named source
Comment/string-only; no code behavior change.
G-code post-processing is now a step of the slicing-pipeline plugin rather than a
separate capability type. One capability class can transform slices at the geometry
seams AND edit the final G-code, behind a single picker/option.
- Add SlicingPipelineStepPlugin::psGCodePostProcess (bound as
orca.slicing.Step.psGCodePostProcess). Unlike the geometry steps it fires from the
GUI export path in PostProcessor.cpp, not from Print::process(): ctx.print/ctx.object
are None and the plugin edits the file at ctx.gcode_path in place. It may run more
than once per slice (file export and/or upload) and its output is not shown in the
preview.
- Extend SlicingPipelineContext with gcode_path/host/output_name and a C++-only
full_config; config_value() falls back to it when there is no live Print.
- PostProcessor.cpp dispatches SlicingPipelinePluginCapability at psGCodePostProcess,
driven by the existing slicing_pipeline_plugin option.
- The exported G-code lives outside data_dir(), so the plugin audit sandbox would
block the write; the trampoline's audit setup grants ctx.gcode_path's folder as a
scoped allowed root, gated on a non-empty gcode_path so the geometry-step hooks gain
no extra filesystem access.
BREAKING CHANGE: the separate G-code post-processing capability type is removed.
- orca.gcode.GCodePluginCapabilityBase and orca.PluginType.PostProcessing are gone;
post-processing plugins migrate to orca.slicing.SlicingPipelineCapabilityBase +
Step.psGCodePostProcess (and gain ctx.params / ctx.config_value()).
- The post_process_plugin config option is removed; use slicing_pipeline_plugin.
Presets carrying the old key degrade to the standard unknown-key warning.
- Manifest type = "post-processing" now maps to Unknown (advisory only; the loader
dispatches on the C++ get_type()).
Also repairs two latent build breaks the branch carried: stale Step enum value usages
in test_slicing_pipeline_hook.cpp and a reference to the removed
ConfigOptionDef::PluginType::None in Tab::on_value_change (now is_plugin_backed()).
Adds the orca_gcode_stamp sample plugin and a psGCodePostProcess binding test.
harrierpigeon