Merge main

src/libslic3r/CMakeLists.txt

@@ -272,6 +272,8 @@ set(lisbslic3r_sources
     GCode/WipeTower2.hpp
     GCode/WipeTower.cpp
     GCode/WipeTower.hpp
+    GCode/WipeTowerEstimate.cpp
+    GCode/WipeTowerEstimate.hpp
     GCodeWriter.cpp
     GCodeWriter.hpp
     Geometry/ArcWelder.hpp

src/libslic3r/Format/bbs_3mf.cpp

@@ -102,45 +102,6 @@ struct ZipUnicodePathExtraField
     }
 };
 
-// Validate that a relative file path does not escape the root directory via path traversal.
-static bool is_path_within_root(const std::string& file_path, const boost::filesystem::path& root)
-{
-    if (file_path.empty())
-        return false;
-
-    boost::filesystem::path p(file_path);
-    if (p.is_absolute())
-        return false;
-
-    // Reject any path component that is ".."
-    for (const auto& component : p) {
-        if (component == "..")
-            return false;
-    }
-
-    // Resolve the full path and verify it starts with the canonical root (also catches symlink escapes)
-    try {
-        boost::filesystem::path full_path = root / p;
-        boost::filesystem::path canonical_root = boost::filesystem::weakly_canonical(root);
-        boost::filesystem::path canonical_full = boost::filesystem::weakly_canonical(full_path);
-
-        auto root_str = canonical_root.string();
-        auto full_str = canonical_full.string();
-        if (full_str.length() < root_str.length())
-            return false;
-        if (full_str.compare(0, root_str.length(), root_str) != 0)
-            return false;
-        // Ensure it's a proper prefix (not just a substring of a longer directory name)
-        if (full_str.length() > root_str.length() &&
-            full_str[root_str.length()] != boost::filesystem::path::preferred_separator)
-            return false;
-    } catch (const boost::filesystem::filesystem_error&) {
-        return false;
-    }
-
-    return true;
-}
-
 // VERSION NUMBERS
 // 0 : .3mf, files saved by older slic3r or other applications. No version definition in them.
 // 1 : Introduction of 3mf versioning. No other change in data saved into 3mf files.

src/libslic3r/GCode/WipeTower.cpp

@@ -1630,6 +1630,94 @@ float WipeTower::get_auto_brim_by_height(float max_height) {
     return 8.f;
 }
 
+float WipeTower::estimate_brim_real_width(float brim_width, float nozzle_diameter, float first_layer_height, bool type2)
+{
+    if (brim_width <= 0.f)
+        return brim_width;
+    const float spacing = nozzle_diameter * 1.25f - first_layer_height * float(1. - M_PI_4); // Width_To_Nozzle_Ratio
+    if (spacing <= EPSILON)
+        return brim_width;
+    const int loops_num = int((brim_width + spacing / 2.f) / spacing);
+    return loops_num * spacing + (type2 ? 0.f : spacing / 2.f);
+}
+
+float WipeTower::get_wrapping_detection_depth()
+{
+    return float(wrapping_wipe_tower_depth);
+}
+
+float WipeTower::nozzle_change_perimeter_width(float nozzle_diameter)
+{
+    auto it = nozzle_diameter_to_nozzle_change_width.find(nozzle_diameter);
+    return it != nozzle_diameter_to_nozzle_change_width.end() ? it->second : 2.f * nozzle_diameter * 1.25f;
+}
+
+float WipeTower::estimate_tower_blocks_depth(const std::vector<PurgeEstimate> &purges, float width, float layer_height, float nozzle_diameter, float extra_spacing)
+{
+    if (purges.empty() || layer_height < EPSILON || nozzle_diameter < EPSILON)
+        return 0.f;
+    const float pw         = nozzle_diameter * 1.25f; // Width_To_Nozzle_Ratio
+    const float ncpw       = nozzle_change_perimeter_width(nozzle_diameter);
+    const float line_width = width - 2.f * pw;
+    if (line_width <= EPSILON)
+        return 0.f;
+    // Line cross-section as volume_to_length() sees it; the infill gap stretches the perimeter
+    // width by the configured ratio and nozzle-change lines keep their own width
+    // (calc_block_infill_gap).
+    auto        line_area   = [layer_height](float w) { return layer_height * (w - layer_height * float(1. - M_PI_4)); };
+    const float extra_width = (extra_spacing - 1.f) * pw;
+    const float gap         = pw + extra_width;
+    const float nc_gap      = ncpw + extra_width;
+    // A layer purges into at most (filaments - 1) targets, so a category holding every filament
+    // never sees its smallest purge (the layer's first filament) in its worst layer.
+    struct Block { float depth = 0.f; float min_purge = 0.f; size_t filaments = 0; };
+    std::map<int, Block> blocks;
+    for (const PurgeEstimate &purge : purges) {
+        Block      &block       = blocks[purge.category];
+        const float purge_depth = std::ceil(purge.prime_volume / line_area(pw) / line_width) * gap;
+        block.min_purge         = block.filaments == 0 ? purge_depth : std::min(block.min_purge, purge_depth);
+        block.depth += purge_depth;
+        ++block.filaments;
+        if (purge.filament_change_length > EPSILON) {
+            // The leaving filament is rammed over the nozzle-change flow, again in whole lines.
+            const float filament_area = float(M_PI) * purge.filament_diameter * purge.filament_diameter / 4.f;
+            const float nc_length     = purge.filament_change_length * filament_area / line_area(ncpw);
+            block.depth += std::ceil(nc_length / (width - ncpw - pw)) * nc_gap;
+        }
+    }
+    float depth = pw; // plan_tower_new starts the first block one perimeter width in
+    for (const auto &[category, block] : blocks)
+        depth += block.filaments == purges.size() ? block.depth - block.min_purge : block.depth;
+    return depth;
+}
+
+float WipeTower::rib_footprint_side(float width, float depth, float rib_width, float extra_rib_length, float max_height)
+{
+    if (width < EPSILON || depth < EPSILON)
+        return 0.f;
+    // Ribs run the diagonal; below the height-based minimum they are extended rather than the
+    // body, then by the extra length, never ending up shorter than the diagonal.
+    const float diagonal   = std::sqrt(width * width + depth * depth);
+    float       rib_length = diagonal;
+    if (depth + EPSILON < get_limit_depth_by_height(max_height))
+        rib_length = std::max(rib_length, get_limit_depth_by_height(max_height) * float(std::sqrt(2.)));
+    rib_length = std::max(diagonal, rib_length + extra_rib_length);
+    // Half the extension at each end of the diagonal plus half the rib width, projected onto the axes.
+    const float rib_w    = std::min(rib_width, std::min(width, depth) / 2.f);
+    const float per_side = ((rib_length - diagonal) / 2.f + rib_w / 2.f) / float(std::sqrt(2.));
+    return std::max(width, depth) + 2.f * per_side;
+}
+
+float WipeTower::estimate_rib_tower_bbox_side(const std::vector<PurgeEstimate> &purges, float width, float layer_height, float nozzle_diameter, float extra_spacing, float rib_width, float extra_rib_length, float max_height)
+{
+    if (purges.empty() || width < EPSILON || layer_height < EPSILON || nozzle_diameter < EPSILON)
+        return 0.f;
+    const float pw     = nozzle_diameter * 1.25f; // Width_To_Nozzle_Ratio
+    const float square = align_ceil(std::sqrt(estimate_tower_blocks_depth(purges, width, layer_height, nozzle_diameter, extra_spacing) * width), pw);
+    const float depth  = estimate_tower_blocks_depth(purges, square, layer_height, nozzle_diameter, extra_spacing);
+    return rib_footprint_side(square, depth, rib_width, extra_rib_length, max_height);
+}
+
 Vec2f WipeTower::move_box_inside_polygon(const BoundingBox &box, const Polygons &polygons, coord_t offset)
 {
     if (polygons.empty()) return Vec2f{0.f, 0.f};

src/libslic3r/GCode/WipeTower.hpp

@@ -42,9 +42,36 @@ public:
 	static const std::map<float, float> min_depth_per_height;
     static float get_limit_depth_by_height(float max_height);
     static float get_auto_brim_by_height(float max_height);
+    // Both generators lay the brim in whole loops one line spacing apart, so the printed width
+    // differs from the configured one. WipeTower reports it with half a spacing of line width
+    // added, WipeTower2 reports the loops alone; an estimate has to round like the generator
+    // whose G-code it stands in for.
+    static float estimate_brim_real_width(float brim_width, float nozzle_diameter, float first_layer_height, bool type2);
+    // Depth a Type1 tower reserves once nothing but wrapping detection asks for one.
+    static float get_wrapping_detection_depth();
+    // Line width of the nozzle-change purge lines at this nozzle diameter.
+    static float nozzle_change_perimeter_width(float nozzle_diameter);
     static TriangleMesh                 its_make_rib_tower(float width, float depth, float height, float rib_length, float rib_width, bool fillet_wall);
     static TriangleMesh                 its_make_rib_brim(const Polygon& brim, float layer_height);
     static Polygon                      rib_section(float width, float depth, float rib_length, float rib_width, bool fillet_wall);
+    // One filament's share of a Type1 tower layer, as plan_tower_new() reserves it.
+    struct PurgeEstimate
+    {
+        float prime_volume           = 0.f;   // mm3 wiped after changing to this filament
+        int   category               = 0;     // filament_adhesiveness_category; one purge block per category
+        float filament_change_length = 0.f;   // mm of filament rammed when it leaves its nozzle; 0 when no nozzle change is planned
+        float filament_diameter      = 1.75f;
+    };
+    // Depth of the Type1 purge stack at the given width (also the rectangle-wall depth): each
+    // purge is whole lines at the block infill gap, one block per adhesiveness category sized by
+    // its worst layer, stacked behind one perimeter width.
+    static float estimate_tower_blocks_depth(const std::vector<PurgeEstimate> &purges, float width, float layer_height, float nozzle_diameter, float extra_spacing);
+    // Side of the square bounding a rib-wall tower's first layer, brim excluded: the body plus the
+    // rib bulge, with the ribs extended to the height-based minimum as both generators do.
+    static float rib_footprint_side(float width, float depth, float rib_width, float extra_rib_length, float max_height);
+    // Type1 rib tower: plan_tower_new() squares the tower from the depth at the configured width,
+    // then re-plans the depth at the squared width.
+    static float estimate_rib_tower_bbox_side(const std::vector<PurgeEstimate> &purges, float width, float layer_height, float nozzle_diameter, float extra_spacing, float rib_width, float extra_rib_length, float max_height);
     // Translation that brings a footprint inside the printable outline, padded by offset. The prime
     // tower is validated against the real outline (see layered_print_cleareance_valid), so clamping
     // against the bounding box alone would leave it off a delta or hexagonal bed. box and polygons

src/libslic3r/GCode/WipeTower2.cpp

@@ -2129,6 +2129,23 @@ std::pair<double, double> WipeTower2::get_wipe_tower_cone_base(double width, dou
     return std::make_pair(R, support_scale);
 }
 
+Polygon WipeTower2::cone_base_polygon(double width, double depth, double height, double angle_deg)
+{
+    Polygon box({Point::new_scale(Vec2d(0., 0.)), Point::new_scale(Vec2d(width, 0.)),
+                 Point::new_scale(Vec2d(width, depth)), Point::new_scale(Vec2d(0., depth))});
+    if (angle_deg <= EPSILON || height <= EPSILON || width <= EPSILON || depth <= EPSILON)
+        return box;
+    const auto [R, x_scale] = get_wipe_tower_cone_base(width, height, depth, angle_deg);
+    if (R <= EPSILON)
+        return box;
+    const Vec2d center(width / 2., depth / 2.);
+    Polygon ellipse;
+    for (double alpha = 0.; alpha < 2. * M_PI; alpha += M_PI / 20.)
+        ellipse.points.push_back(Point::new_scale(center + R * Vec2d(std::cos(alpha) / x_scale, std::sin(alpha))));
+    Polygons u = union_({box, ellipse});
+    return u.empty() ? box : u.front();
+}
+
 // Static method to extract wipe_volumes[from][to] from the configuration.
 // Takes a ConfigBase so the GUI's wipe tower size estimate can pass the plate's
 // DynamicPrintConfig directly instead of materializing a full PrintConfig per call.

src/libslic3r/GCode/WipeTower2.hpp

@@ -27,6 +27,10 @@ public:
     // in WipeTowerIntegration::append_tcr2 does not strip it.
     static const std::string wait_for_temp_tag() { return ";_WAIT_FOR_TEMP_ON_WIPE_TOWER"; }
 	static std::pair<double, double> get_wipe_tower_cone_base(double width, double height, double depth, double angle_deg);
+	// First-layer outline of a cone-wall tower in tower-local (scaled) coordinates: body box
+	// unioned with the cone's base ellipse — the model first_layer_wipe_tower_corners uses,
+	// and generate_support_cone_wall stays within it. Brim not included.
+	static Polygon cone_base_polygon(double width, double depth, double height, double angle_deg);
 	static std::vector<std::vector<float>> extract_wipe_volumes(const ConfigBase& config);
 	// Estimated total flush volume of a SEMM print with the given number of filaments,
 	// used to reserve wipe tower space before the tower is generated.

src/libslic3r/GCode/WipeTowerEstimate.cpp

@@ -0,0 +1,202 @@
+#include "WipeTowerEstimate.hpp"
+
+#include "WipeTower.hpp"
+#include "WipeTower2.hpp"
+#include "../Config.hpp"
+#include "../PrintConfig.hpp"
+#include "../libslic3r.h"
+
+#include <algorithm>
+#include <cmath>
+#include <set>
+
+namespace Slic3r {
+
+// Every caller today declares all these keys, but the signature accepts any ConfigBase: fall
+// back to the key's declared default, never to a hand-copied constant.
+static const ConfigOption *option_of(const ConfigBase &config, const char *key)
+{
+    if (const ConfigOption *opt = config.option(key); opt != nullptr)
+        return opt;
+    if (const ConfigDef *def = config.def(); def != nullptr)
+        if (const ConfigOptionDef *opt_def = def->get(key); opt_def != nullptr)
+            return opt_def->default_value.get();
+    return nullptr;
+}
+
+WipeTowerType resolve_wipe_tower_type(const ConfigBase &config)
+{
+    // printer_model is what the CLI keys its Bambu Lab detection on; the GUI's vendor flag
+    // agrees for every shipped profile.
+    if (const auto *model = dynamic_cast<const ConfigOptionString *>(config.option("printer_model"));
+        model != nullptr && model->value.compare(0, 9, "Bambu Lab") == 0)
+        return WipeTowerType::Type1;
+    // By value, not by concrete type: a static PrintConfig holds ConfigOptionEnum<T>, a
+    // DynamicConfig built from presets holds ConfigOptionEnumGeneric, and both answer getInt().
+    const ConfigOption *type = option_of(config, "wipe_tower_type");
+    return type != nullptr ? WipeTowerType(type->getInt()) : WipeTowerType::Type2;
+}
+
+Polygon estimate_wipe_tower_first_layer_outline(const ConfigBase &config, WipeTowerType tower_type, double width, double depth, double height)
+{
+    // Type1 ignores the cone option. The wall type is read by value: a preset-shaped config
+    // holds it as ConfigOptionEnumGeneric, which a cast to ConfigOptionEnum<T> cannot see.
+    const ConfigOption *wall_type  = option_of(config, "wipe_tower_wall_type");
+    const ConfigOption *cone_angle = option_of(config, "wipe_tower_cone_angle");
+    const bool          cone       = tower_type == WipeTowerType::Type2 && wall_type != nullptr &&
+                         wall_type->getInt() == int(WipeTowerWallType::wtwCone) && cone_angle != nullptr;
+    return WipeTower2::cone_base_polygon(width, depth, height, cone ? cone_angle->getFloat() : 0.);
+}
+
+WipeTowerFootprint estimate_wipe_tower_footprint(const ConfigBase &config, WipeTowerType tower_type, const std::vector<unsigned int> &filament_ids, double layer_height, double max_object_height)
+{
+    WipeTowerFootprint footprint;
+    footprint.height = max_object_height;
+    const size_t filaments_cnt = filament_ids.size();
+    if (filaments_cnt == 0 || layer_height < EPSILON)
+        return footprint;
+
+    auto opt_float = [&config](const char *key) {
+        const ConfigOption *opt = option_of(config, key);
+        return opt != nullptr ? opt->getFloat() : 0.;
+    };
+    auto opt_bool = [&config](const char *key) {
+        const ConfigOption *opt = option_of(config, key);
+        return opt != nullptr && opt->getBool();
+    };
+    auto opt_enum = [&config](const char *key, int fallback) {
+        const ConfigOption *opt = option_of(config, key);
+        return opt != nullptr ? opt->getInt() : fallback;
+    };
+    auto floats_of = [&config](const char *key) { return dynamic_cast<const ConfigOptionFloats *>(option_of(config, key)); };
+    auto max_of = [&floats_of](const char *key, double fallback) {
+        const auto *opt = floats_of(key);
+        return (opt != nullptr && !opt->values.empty()) ? *std::max_element(opt->values.begin(), opt->values.end()) : fallback;
+    };
+    auto float_at = [&floats_of](const char *key, unsigned int id, double fallback) {
+        const auto *opt = floats_of(key);
+        return (opt != nullptr && !opt->values.empty()) ? opt->get_at(id) : fallback;
+    };
+    auto int_at = [&config](const char *key, unsigned int id, int fallback) {
+        const auto *opt = dynamic_cast<const ConfigOptionInts *>(option_of(config, key));
+        return (opt != nullptr && !opt->values.empty()) ? opt->get_at(id) : fallback;
+    };
+
+    // Both planners size every layer, so the tower has to fit its thinnest one: the first layer
+    // when it is printed thinner than the rest.
+    const double first_layer_height = opt_float("initial_layer_print_height");
+    if (first_layer_height > EPSILON)
+        layer_height = std::min(layer_height, first_layer_height);
+
+    const bool   type1            = tower_type == WipeTowerType::Type1;
+    const double width            = opt_float("prime_tower_width");
+    const double prime_volume     = opt_float("prime_volume");
+    // Type1 spaces its purge lines by prime_tower_infill_gap, Type2 by wipe_tower_extra_spacing.
+    // Type2's extra flow cancels out of the depth: the line length is divided by it and the row
+    // pitch multiplied by it (WipeTower2::get_wipe_depth).
+    const double extra_spacing    = opt_float(type1 ? "prime_tower_infill_gap" : "wipe_tower_extra_spacing") / 100.;
+    const double rib_width        = opt_float("wipe_tower_rib_width");
+    const double extra_rib_length = opt_float("wipe_tower_extra_rib_length");
+    const auto  *nozzle_opt       = floats_of("nozzle_diameter");
+    const double nozzle_diameter  = (nozzle_opt != nullptr && !nozzle_opt->values.empty()) ? nozzle_opt->values.front() : 0.4;
+    const bool   dual_nozzle      = nozzle_opt != nullptr && nozzle_opt->values.size() == 2;
+    const bool   rib_wall         = opt_enum("wipe_tower_wall_type", int(WipeTowerWallType::wtwRectangle)) == int(WipeTowerWallType::wtwRib);
+    const bool   smooth_timelapse = opt_enum("timelapse_type", int(TimelapseType::tlTraditional)) == int(TimelapseType::tlSmooth);
+    const bool   wrapping         = opt_bool("enable_wrapping_detection");
+    // Reasons a tower is printed with no tool change to purge for: the ones that stop
+    // normalize_fdm_2 clearing enable_prime_tower. Its mixed-filament case is not modelled.
+    const bool   need_wipe_tower  = smooth_timelapse || wrapping;
+
+    // A tower printed for one of the reasons above has no tool change to purge for; both
+    // planners give it the idle depth below and nothing more.
+    const size_t purge_count = filaments_cnt > 1 ? (dual_nozzle ? filaments_cnt : filaments_cnt - 1) : 0;
+
+    // Type2 purges one volume per tool change. Type1 plans per filament below; here the volume
+    // only decides whether a tower exists.
+    double volume = prime_volume * double(purge_count);
+    if (dual_nozzle) {
+        // Dual-nozzle printers also purge the filament change length on the tower.
+        const double length   = max_of("filament_change_length", 0.);
+        const double diameter = max_of("filament_diameter", 1.75);
+        volume += length * PI * diameter * diameter / 4. * double(filaments_cnt / 2);
+    }
+    // Single-extruder multi-material purges the flush matrix instead of the prime volume.
+    const bool semm_flush = opt_bool("purge_in_prime_tower") && opt_bool("single_extruder_multi_material");
+    if (semm_flush)
+        volume = WipeTower2::estimate_semm_flush_volume(config, filaments_cnt);
+
+    // The Type1 planner wipes each filament's own prime volume after changing to it, in a block
+    // per adhesiveness category. On a two-nozzle printer the leaving filament is also rammed at
+    // every nozzle change; the tool order groups filaments by nozzle, so a layer crosses
+    // (nozzles used - 1) times, charged here to the longest ramming.
+    std::vector<WipeTower::PurgeEstimate> purges;
+    if (type1 && filaments_cnt > 1) {
+        const bool    saving_mode = opt_enum("prime_volume_mode", int(PrimeVolumeMode::pvmDefault)) == int(PrimeVolumeMode::pvmSaving);
+        std::set<int> nozzles;
+        size_t        longest_ramming = 0;
+        for (size_t i = 0; i < filaments_cnt; ++i) {
+            const unsigned int         id = filament_ids[i];
+            WipeTower::PurgeEstimate purge;
+            purge.prime_volume      = saving_mode ? 15.f : float(float_at("filament_prime_volume", id, prime_volume));
+            purge.category          = int_at("filament_adhesiveness_category", id, 0);
+            purge.filament_diameter = float(float_at("filament_diameter", id, 1.75));
+            purges.push_back(purge);
+            if (dual_nozzle) {
+                nozzles.insert(int_at("filament_map", id, 1));
+                if (float_at("filament_change_length", id, 0.) > float_at("filament_change_length", filament_ids[longest_ramming], 0.))
+                    longest_ramming = i;
+            }
+        }
+        if (nozzles.size() > 1)
+            purges[longest_ramming].filament_change_length = float(float_at("filament_change_length", filament_ids[longest_ramming], 0.) * double(nozzles.size() - 1));
+    }
+
+    // Both wall types decide this together: over-reserving only wastes bed area, but reporting
+    // no tower for one that is built collapses the validation hull to a point.
+    // A tool change is a reason on its own (see the base commit); Type1 already reserves
+    // per filament, Type2 has only the volume, which can resolve to zero.
+    const bool has_purge = type1 ? !purges.empty() : volume > EPSILON;
+    if (!has_purge && filaments_cnt < 2 && !need_wipe_tower)
+        return footprint;
+
+    const double min_depth      = WipeTower::get_limit_depth_by_height(float(max_object_height));
+    const float  perimeter_width = float(nozzle_diameter) * 1.25f; // Width_To_Nozzle_Ratio
+    // With nothing to purge, plan_tower_new sizes the tower for wrapping detection or the
+    // stability minimum; WipeTower2 only knows the latter.
+    const double idle_depth = (type1 && wrapping && !smooth_timelapse) ? WipeTower::get_wrapping_detection_depth() : min_depth;
+    if (rib_wall) {
+        // Both planners square the tower to the purge area and extend the ribs, not the body,
+        // below the stability minimum.
+        double side;
+        if (!purges.empty())
+            side = WipeTower::estimate_rib_tower_bbox_side(purges, float(width), float(layer_height), float(nozzle_diameter), float(extra_spacing), float(rib_width), float(extra_rib_length), float(max_object_height));
+        else {
+            const double square = has_purge ? std::sqrt(volume / layer_height * extra_spacing) : idle_depth;
+            side = WipeTower::rib_footprint_side(float(square), float(square), float(rib_width), float(extra_rib_length), float(max_object_height));
+        }
+        footprint.width = footprint.depth = side;
+    } else {
+        double depth;
+        if (type1) {
+            // plan_tower_new stretches a short purge stack to the stability minimum behind its
+            // leading perimeter width.
+            depth = purges.empty() ? idle_depth : std::max(min_depth + perimeter_width, double(WipeTower::estimate_tower_blocks_depth(purges, float(width), float(layer_height), float(nozzle_diameter), float(extra_spacing))));
+        } else {
+            depth = volume / (layer_height * width);
+            // The flush volumes already hold the spacing between wipes.
+            if (!semm_flush)
+                depth *= extra_spacing;
+            depth = std::max(min_depth, depth);
+        }
+        footprint.width = width;
+        footprint.depth = depth;
+    }
+
+    footprint.brim_width = opt_float("prime_tower_brim_width");
+    if (footprint.brim_width < 0)
+        footprint.brim_width = WipeTower::get_auto_brim_by_height(float(max_object_height));
+    footprint.brim_width = WipeTower::estimate_brim_real_width(float(footprint.brim_width), float(nozzle_diameter), float(first_layer_height > EPSILON ? first_layer_height : layer_height), !type1);
+    return footprint;
+}
+
+} // namespace Slic3r

src/libslic3r/GCode/WipeTowerEstimate.hpp

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <vector>
+
+#include "../Polygon.hpp"
+
+namespace Slic3r {
+
+class ConfigBase;
+enum class WipeTowerType;
+
+// Pre-slice footprint of the wipe tower, shared by validation (Print), the GUI's placement
+// clamp/preview/arrange and the CLI placement. The arithmetic is shared; the inputs below are
+// not, so a change to how one caller derives them has to be mirrored in the others.
+struct WipeTowerFootprint
+{
+    double width      = 0.; // effective width: equals depth for a rib wall, which squares the tower
+    double depth      = 0.; // 0 when these inputs imply no tower
+    double height     = 0.; // tallest object; drives the stability floor and the auto brim
+    double brim_width = 0.; // printed width: auto (-1) resolved by height, laid in whole loops
+};
+
+// Which planner builds the tower: Bambu Lab printers always get Type1, the rest follow
+// wipe_tower_type. The rule Print::wipe_tower_type() and the CLI apply, read off the config so
+// the GUI and CLI placement can resolve it without a Print.
+WipeTowerType resolve_wipe_tower_type(const ConfigBase &config);
+
+// First-layer outline of an estimated tower in tower-local scaled coordinates, brim excluded:
+// the body box, or for a Type2 cone wall the box unioned with the cone's base. The preview,
+// the placement margin and validation all take the outline from here so they cannot disagree
+// about whether a cone exists.
+Polygon estimate_wipe_tower_first_layer_outline(const ConfigBase &config, WipeTowerType tower_type, double width, double depth, double height);
+
+// filament_ids:  0-based filaments purged on the plate. The config cannot see custom G-code tool
+//                changes, so ids derived from the model must include them
+//                (Print::extruders(true)) or a real tower is sized as if it were never built.
+// layer_height:  thinnest layer the objects are sliced at. The first layer is folded in here.
+//
+// A raft is deliberately not a reason: normalize_fdm_2 clears enable_prime_tower for a plate
+// purging one filament unless smooth timelapse or wrapping detection is on.
+WipeTowerFootprint estimate_wipe_tower_footprint(const ConfigBase                &config,
+                                                 WipeTowerType                    tower_type,
+                                                 const std::vector<unsigned int> &filament_ids,
+                                                 double                           layer_height,
+                                                 double                           max_object_height);
+
+} // namespace Slic3r

src/libslic3r/MinimumSpanningTree.cpp

@@ -60,10 +60,15 @@ auto MinimumSpanningTree::prim(std::vector<Point> vertices) const -> AdjacencyGr
         //This search is O(V) right now, which can be made down to O(log(V)). This reduces the overall time complexity from O(V*V) to O(V*log(E)).
         //However that requires an implementation of a heap that supports the decreaseKey operation, which is not in the std library.
         //TODO: Implement this?
+        // Break equal-distance ties on coordinates: the map is keyed by address, so its
+        // iteration order (and therefore the first minimum) would otherwise depend on where
+        // the vertices were allocated.
         using MapValue = std::pair<const Point*, coordf_t>;
         const auto closest = std::min_element(smallest_distance.begin(), smallest_distance.end(),
                                               [](const MapValue& a, const MapValue& b) {
-                                                  return a.second < b.second;
+                                                  if (a.second != b.second)
+                                                      return a.second < b.second;
+                                                  return *a.first < *b.first;
                                               });
 
         //Add this point to the graph and remove it from the candidates.

src/libslic3r/PresetBundle.cpp

@@ -1635,6 +1635,12 @@ PresetsConfigSubstitutions PresetBundle::import_presets(std::vector<std::string>
                 metadata.id = to_string(uuid);
                 BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " bundle_id was empty, so generating a UUID: " << metadata.id;
             }
+            if (has_bundle_structure && !is_path_within_root(metadata.id, user_folder / user_id / PRESET_LOCAL_DIR)) {
+                BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << " bundle id escapes the bundle directory, not importing: " << metadata.id;
+                fclose(zipFile);
+                fs::remove_all(temp_folder, ec);
+                continue;
+            }
 
             // Build bundle directory path based on whether bundle_structure.json was present
             fs::path bundle_base_dir;
@@ -1657,11 +1663,15 @@ PresetsConfigSubstitutions PresetBundle::import_presets(std::vector<std::string>
                 if (status) {
                     std::string file_name = file_stat.m_filename;
                     BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " From zip file: " << file << ". Read file name: " << file_stat.m_filename;
-                    size_t index = file_name.find_last_of('/');
+                    size_t index = file_name.find_last_of("/\\");
                     if (std::string::npos != index) {
                         file_name = file_name.substr(index + 1);
                     }
                     if (BUNDLE_STRUCTURE_JSON_NAME == file_name) continue;
+                    if (!is_path_within_root(file_name, temp_folder)) {
+                        BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << " zip entry escapes the temp directory, skipping: " << file_stat.m_filename;
+                        continue;
+                    }
                     // create target file path
                     std::string target_file_path = boost::filesystem::path(temp_folder / file_name).make_preferred().string();
 
@@ -1750,6 +1760,10 @@ bool PresetBundle::import_json_presets(PresetsConfigSubstitutions &            s
             BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << " Preset type is unknown, not loading: " << name;
             return false;
         }
+        if (!is_path_within_root(name, fs::path(collection->m_dir_path))) {
+            BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << " Preset name escapes the preset directory, not loading: " << name;
+            return false;
+        }
         const PresetOrigin load_origin = detect_origin_from_path(boost::filesystem::path(bundle_dir));
         const std::string      preset_name = get_preset_canonical_name(name, load_origin);
 

src/libslic3r/Print.cpp

@@ -20,6 +20,7 @@
 #include "GCode.hpp"
 #include "GCode/WipeTower.hpp"
 #include "GCode/WipeTower2.hpp"
+#include "GCode/WipeTowerEstimate.hpp"
 #include "Utils.hpp"
 #include "PrintConfig.hpp"
 #include "MaterialType.hpp"
@@ -1031,20 +1032,21 @@ static StringObjectException layered_print_cleareance_valid(const Print &print,
 
     //BBS: add the wipe tower check logic
     const PrintConfig &       config   = print.config();
-    int                 filaments_count = print.extruders().size();
+    // Custom G-code tool changes (MultiAsSingle) build a real tower on a plate whose objects
+    // all use one filament, so they have to be counted or the hull below collapses to a point.
+    int                 filaments_count = print.extruders(true).size();
     int                 plate_index = print.get_plate_index();
     const Vec3d         plate_origin = print.get_plate_origin();
     float               x            = config.wipe_tower_x.get_at(plate_index) + plate_origin(0);
     float               y            = config.wipe_tower_y.get_at(plate_index) + plate_origin(1);
-    float               width        = config.prime_tower_width.value;
     float               a            = config.wipe_tower_rotation_angle.value;
     //float               v            = config.wiping_volume.value;
 
-    float        depth                     = print.wipe_tower_data(filaments_count).depth;
-    //float        brim_width                = print.wipe_tower_data(filaments_count).brim_width;
-
-    if (config.wipe_tower_wall_type.value == WipeTowerWallType::wtwRib)
-        width = depth;
+    // The estimate resolves the effective width (a rib wall squares the tower).
+    const WipeTowerData &wipe_tower_estimate = print.wipe_tower_data(filaments_count);
+    float                width               = wipe_tower_estimate.width;
+    float                depth               = wipe_tower_estimate.depth;
+    float                brim_width          = wipe_tower_estimate.brim_width;
 
     Polygons convex_hulls_temp;
     if (print.has_wipe_tower()) {
@@ -1066,36 +1068,54 @@ static StringObjectException layered_print_cleareance_valid(const Print &print,
             convex_hulls_temp.push_back(wipe_tower_polygon);
         }
     }
+    // Post-generation the mesh bottom already carries the brim. Pre-generation the body grows
+    // by the brim only when its width is explicit; the auto brim and a Type2 cone base depend on
+    // the tower height, exact only once generated, so they only warn here - the exact footprint
+    // is re-checked in _make_wipe_tower.
+    const bool exact_footprint     = print.is_step_done(psWipeTower);
+    Polygons   tower_polys_checked = (!exact_footprint && config.prime_tower_brim_width.value >= 0) ?
+                                         offset(convex_hulls_temp, float(scale_(brim_width))) :
+                                         convex_hulls_temp;
+    Polygons tower_polys_estimated;
+    if (!exact_footprint && !convex_hulls_temp.empty()) {
+        double max_height = 0.;
+        for (const PrintObject *object : print.objects())
+            max_height = std::max(max_height, unscale_(object->size().z()));
+        Polygon base = estimate_wipe_tower_first_layer_outline(config, print.wipe_tower_type(), width, depth, max_height);
+        base.rotate(Geometry::deg2rad(a));
+        base.translate(Point(scale_(x), scale_(y)));
+        tower_polys_estimated = offset(base, float(scale_(brim_width)));
+    }
+    // Object proximity stays a body-only warning: brim near-misses would newly warn on
+    // many setups that print fine.
     if (!intersection(convex_hulls_other, convex_hulls_temp).empty()) {
         if (warning) {
             warning->string += L("Prime Tower") + L(" is too close to others, and collisions may be caused.\n");
         }
     }
-    if (!intersection(exclude_polys, convex_hulls_temp).empty()) {
-        /*if (warning) {
-            warning->string += L("Prime Tower is too close to exclusion area, there may be collisions when printing.\n");
-        }*/
+    if (!intersection(exclude_polys, tower_polys_checked).empty()) {
         return {L("Prime Tower") + L(" is too close to an exclusion area, and collisions will be caused.\n")};
     }
-    if (print_config.enable_wrapping_detection.value && !intersection({wrapping_poly}, convex_hulls_temp).empty()) {
+    if (print_config.enable_wrapping_detection.value && !intersection({wrapping_poly}, tower_polys_checked).empty()) {
         return {L("Prime Tower") + L(" is too close to clumping detection area, and collisions will be caused.\n")};
     }
-    // Skip the containment check for towers that will never be printed (single-filament
-    // prints without smooth timelapse keep the config's tower position but emit nothing).
-    // Pre-generation only the body square is tested — the auto-brim estimate can overshoot
-    // the generated brim by several mm and must not hard-fail a print that physically fits.
-    // Post-generation the mesh bottom already includes the real brim, so the exact
-    // footprint is tested.
-    if (filaments_count > 1 || print.enable_timelapse_print()) {
-        // The shared printable polygon is plate-local, while the tower polygons above are
-        // already shifted by the plate origin.
-        Polygons    printable_polys = print.get_extruder_shared_printable_polygon();
-        const Point plate_shift(scale_(plate_origin.x()), scale_(plate_origin.y()));
-        for (Polygon &p : printable_polys)
-            p.translate(plate_shift);
-        if (!diff(convex_hulls_temp, printable_polys).empty())
-            return {L("Prime Tower") + L(" is partially outside the printable area, and it cannot be printed.\n")};
+    if (warning && !intersection(exclude_polys, tower_polys_estimated).empty()) {
+        warning->string += L("Prime Tower") + L(" is too close to exclusion area, there may be collisions when printing.") + "\n";
     }
+    if (warning && print_config.enable_wrapping_detection.value && !intersection({wrapping_poly}, tower_polys_estimated).empty()) {
+        warning->string += L("Prime Tower") + L(" is too close to clumping detection area, there may be collisions when printing.") + "\n";
+    }
+    // No gate on "is there a tower": one that is not printed estimates to zero, so the hulls
+    // are degenerate and every check passes. Re-deriving it here missed the wrapping-detection
+    // tower on a single-filament plate.
+    Polygons    printable_polys = print.get_extruder_shared_printable_polygon();
+    const Point plate_shift(scale_(plate_origin.x()), scale_(plate_origin.y()));
+    for (Polygon &p : printable_polys)
+        p.translate(plate_shift);
+    if (!diff(tower_polys_checked, printable_polys).empty())
+        return {L("Prime Tower") + L(" is partially outside the printable area, and it cannot be printed.\n")};
+    if (warning && !diff(tower_polys_estimated, printable_polys).empty())
+        warning->string += L("Prime Tower") + L(" is partially outside the printable area, and it cannot be printed.\n");
     return {};
 }
 
@@ -3997,74 +4017,25 @@ bool Print::has_wipe_tower() const
 
 const WipeTowerData &Print::wipe_tower_data(size_t filaments_cnt) const
 {
-    // If the wipe tower wasn't created yet, make sure the depth and brim_width members are set to default.
-    double max_height = 0;
-    for (size_t obj_idx = 0; obj_idx < m_objects.size(); obj_idx++) {
-        double object_z = (double) m_objects[obj_idx]->size().z();
-        max_height      = std::max(unscale_(object_z), max_height);
+    // Until the tower is generated, size it with the estimate the GUI/CLI placement uses, so
+    // validation cannot reject a position the clamp just accepted.
+    if (is_step_done(psWipeTower) || filaments_cnt == 0)
+        return m_wipe_tower_data;
+
+    double max_height   = 0.;
+    double layer_height = std::numeric_limits<double>::max();
+    for (const PrintObject *object : m_objects) {
+        max_height   = std::max(max_height, unscale_(double(object->size().z())));
+        layer_height = std::min(layer_height, object->config().layer_height.value);
     }
-    if (max_height < EPSILON) return m_wipe_tower_data;
+    if (max_height < EPSILON)
+        return m_wipe_tower_data;
 
-    double layer_height                  = 0.08f; // hard code layer height
-    layer_height        = m_objects.front()->config().layer_height.value;
-
-    auto   timelapse_type  = config().option<ConfigOptionEnum<TimelapseType>>("timelapse_type");
-    bool   need_wipe_tower = (timelapse_type ? (timelapse_type->value == TimelapseType::tlSmooth) : false) | (m_config.wipe_tower_wall_type.value == WipeTowerWallType::wtwRib);
-    double extra_spacing = config().option("prime_tower_infill_gap")->getFloat() / 100.;
-    double rib_width     = config().option("wipe_tower_rib_width")->getFloat();
-
-    double filament_change_volume = 0.;
-    {
-        std::vector<double> filament_change_lengths;
-        auto                filament_change_lengths_opt = config().option<ConfigOptionFloats>("filament_change_length");
-        if (filament_change_lengths_opt) filament_change_lengths = filament_change_lengths_opt->values;
-        double              length   = filament_change_lengths.empty() ? 0 : *std::max_element(filament_change_lengths.begin(), filament_change_lengths.end());
-        double              diameter = 1.75;
-        std::vector<double> diameters;
-        auto                filament_diameter_opt = config().option<ConfigOptionFloats>("filament_diameter");
-        if (filament_diameter_opt) diameters = filament_diameter_opt->values;
-        diameter               = diameters.empty() ? diameter : *std::max_element(diameters.begin(), diameters.end());
-        filament_change_volume = length * PI * diameter * diameter / 4.;
-    }
-
-
-    if (! is_step_done(psWipeTower) && filaments_cnt !=0) {
-        double wipe_volume  = m_config.prime_volume;
-        int filament_depth_count = m_config.nozzle_diameter.values.size() == 2 ? filaments_cnt : filaments_cnt - 1;
-        if (filaments_cnt == 1 && enable_timelapse_print()) filament_depth_count = 1;
-        double volume = wipe_volume * filament_depth_count;
-        if (m_config.nozzle_diameter.values.size() == 2) volume += filament_change_volume * (int) (filaments_cnt / 2);
-
-        // Sizing should take into account currently set wiping volumes.
-        // For a long time, the initial preview would just use 900/width per toolchange (15mm on a 60mm wide tower)
-        // and it worked well enough. Let's try to do slightly better by accounting for the purging volumes.
-        const bool semm_flush = m_config.purge_in_prime_tower && m_config.single_extruder_multi_material;
-        if (semm_flush) volume = WipeTower2::estimate_semm_flush_volume(m_config, filaments_cnt);
-
-        if (m_config.wipe_tower_wall_type.value == WipeTowerWallType::wtwRib) {
-            double depth = std::sqrt(volume / layer_height * extra_spacing);
-            if (need_wipe_tower || filaments_cnt > 1) {
-                float min_wipe_tower_depth = WipeTower::get_limit_depth_by_height(max_height);
-                depth  = std::max((double) min_wipe_tower_depth, depth);
-                depth += rib_width / std::sqrt(2) + config().wipe_tower_extra_rib_length.value;
-                const_cast<Print *>(this)->m_wipe_tower_data.depth = depth;
-                const_cast<Print *>(this)->m_wipe_tower_data.brim_width = m_config.prime_tower_brim_width;
-            }
-        }
-        else {
-            double width = m_config.prime_tower_width;
-            double depth = volume / (layer_height * width);
-            // The flush volumes already hold the spacing between wipes.
-            if (!semm_flush) depth *= extra_spacing;
-            if (need_wipe_tower || depth > EPSILON) {
-                float min_wipe_tower_depth = WipeTower::get_limit_depth_by_height(max_height);
-                depth = std::max((double) min_wipe_tower_depth, depth);
-            }
-            const_cast<Print *>(this)->m_wipe_tower_data.depth = depth;
-            const_cast<Print *>(this)->m_wipe_tower_data.brim_width = m_config.prime_tower_brim_width;
-        }
-        if (m_config.prime_tower_brim_width < 0) const_cast<Print *>(this)->m_wipe_tower_data.brim_width = WipeTower::get_auto_brim_by_height(max_height);
-    }
+    const WipeTowerFootprint footprint = estimate_wipe_tower_footprint(m_config, this->wipe_tower_type(), this->extruders(true), layer_height, max_height);
+    WipeTowerData &data = const_cast<Print *>(this)->m_wipe_tower_data;
+    data.depth      = float(footprint.depth);
+    data.width      = float(footprint.width);
+    data.brim_width = float(footprint.brim_width);
     return m_wipe_tower_data;
 }
 
@@ -4290,6 +4261,7 @@ void Print::_make_wipe_tower()
         m_wipe_tower_data.tool_changes.reserve(m_wipe_tower_data.tool_ordering.layer_tools().size());
         wipe_tower.generate_new(m_wipe_tower_data.tool_changes);
         m_wipe_tower_data.depth      = wipe_tower.get_depth();
+        m_wipe_tower_data.width      = wipe_tower.width();
         m_wipe_tower_data.brim_width = wipe_tower.get_brim_width();
         m_wipe_tower_data.bbx = wipe_tower.get_bbx();
         m_wipe_tower_data.rib_offset = wipe_tower.get_rib_offset();
@@ -4403,6 +4375,7 @@ void Print::_make_wipe_tower()
         m_wipe_tower_data.tool_changes.reserve(m_wipe_tower_data.tool_ordering.layer_tools().size());
         wipe_tower.generate(m_wipe_tower_data.tool_changes);
         m_wipe_tower_data.depth             = wipe_tower.get_depth();
+        m_wipe_tower_data.width             = wipe_tower.width();
         m_wipe_tower_data.z_and_depth_pairs = wipe_tower.get_z_and_depth_pairs();
         m_wipe_tower_data.brim_width        = wipe_tower.get_brim_width();
         m_wipe_tower_data.height            = wipe_tower.get_wipe_tower_height();
@@ -4438,7 +4411,9 @@ void Print::_make_wipe_tower()
                                          wipe_tower.get_wipe_tower_height(), wipe_tower.get_brim_width(),
                                          config().wipe_tower_wall_type.value == WipeTowerWallType::wtwRib,
                                          wipe_tower.get_rib_width(), wipe_tower.get_rib_length(),
-                                         config().wipe_tower_fillet_wall.value);
+                                         config().wipe_tower_fillet_wall.value,
+                                         config().wipe_tower_wall_type.value == WipeTowerWallType::wtwCone ?
+                                             (float) config().wipe_tower_cone_angle.value : 0.f);
         const Vec3d origin                      = Vec3d::Zero();
         // FakeWipeTower::pos is a bed-frame translation applied after rotation
         // (getFakeExtrusionPathsFromWipeTower2 rotates about the local origin), so the
@@ -4451,6 +4426,28 @@ void Print::_make_wipe_tower()
                                                   config().wipe_tower_rotation_angle, config().wipe_tower_cone_angle,
                                                   {scale_(origin.x()), scale_(origin.y())});
     }
+
+    // The clamps and checks above work from estimates; re-test the exact generated footprint
+    // so an off-plate tower fails with a clear error instead of exporting unprintable G-code
+    // (validate() only sees the mesh on its next run).
+    if (m_wipe_tower_data.wipe_tower_mesh_data) {
+        Polygon footprint = m_wipe_tower_data.wipe_tower_mesh_data->bottom; // includes brim and rib offset
+        footprint.rotate(Geometry::deg2rad(m_config.wipe_tower_rotation_angle.value));
+        footprint.translate(Point(scale_(m_config.wipe_tower_x.get_at(m_plate_index)),
+                                  scale_(m_config.wipe_tower_y.get_at(m_plate_index))));
+        const Polygons printable_polys = this->get_extruder_shared_printable_polygon();
+        if (!printable_polys.empty() && !diff(Polygons{footprint}, printable_polys).empty()) {
+            const BoundingBox fp = get_extents(footprint);
+            const BoundingBox pr = get_extents(printable_polys);
+            BOOST_LOG_TRIVIAL(error) << boost::format("wipe tower footprint [%1%,%2%]-[%3%,%4%] leaves printable [%5%,%6%]-[%7%,%8%]") %
+                unscaled(fp.min.x()) % unscaled(fp.min.y()) % unscaled(fp.max.x()) % unscaled(fp.max.y()) %
+                unscaled(pr.min.x()) % unscaled(pr.min.y()) % unscaled(pr.max.x()) % unscaled(pr.max.y());
+            throw Slic3r::SlicingError(L("Prime Tower") + L(" is partially outside the printable area, and it cannot be printed.\n"));
+        }
+        // The cutter/purge corner is a physical obstacle — the brim must stay out like the body.
+        if (!intersection(get_bed_excluded_area(m_config), Polygons{footprint}).empty())
+            throw Slic3r::SlicingError(L("Prime Tower") + L(" is too close to an exclusion area, and collisions will be caused.\n"));
+    }
 }
 
 // Generate a recommended G-code output file name based on the format template, default extension, and template parameters
@@ -5999,17 +5996,26 @@ ExtrusionLayers FakeWipeTower::getTrueExtrusionLayersFromWipeTower() const
     }
     return wtels;
 }
-void WipeTowerData::construct_mesh(float width, float depth, float height, float brim_width, bool is_rib_wipe_tower, float rib_width, float rib_length,bool fillet_wall)
+void WipeTowerData::construct_mesh(float width, float depth, float height, float brim_width, bool is_rib_wipe_tower, float rib_width, float rib_length,bool fillet_wall, float cone_angle)
 {
     wipe_tower_mesh_data = WipeTowerMeshData{};
     float first_layer_height=0.08; //brim height
     if (width < EPSILON || depth < EPSILON || height < EPSILON) return;
-    if (!is_rib_wipe_tower || rib_length < EPSILON) {
+    if (cone_angle > EPSILON && (!is_rib_wipe_tower || rib_length < EPSILON)) {
+        // Cone tower: the base bulges past the body box; this bottom polygon feeds the
+        // containment checks, so it must carry the bulge and the brim (cone not lofted).
+        wipe_tower_mesh_data->real_wipe_tower_mesh = make_cube(width, depth, height);
+        wipe_tower_mesh_data->bottom               = WipeTower2::cone_base_polygon(width, depth, height, cone_angle);
+        auto brim_bottom                           = offset(wipe_tower_mesh_data->bottom, scaled(brim_width));
+        if (!brim_bottom.empty())
+            wipe_tower_mesh_data->bottom = brim_bottom.front();
+        wipe_tower_mesh_data->real_brim_mesh = WipeTower::its_make_rib_brim(wipe_tower_mesh_data->bottom, first_layer_height);
+    } else if (!is_rib_wipe_tower || rib_length < EPSILON) {
         wipe_tower_mesh_data->real_wipe_tower_mesh = make_cube(width, depth, height);
         wipe_tower_mesh_data->real_brim_mesh       = make_cube(width + 2 * brim_width, depth + 2 * brim_width, first_layer_height);
         wipe_tower_mesh_data->real_brim_mesh.translate({-brim_width, -brim_width, 0});
-        wipe_tower_mesh_data->bottom = {scaled(Vec2f{-brim_width, -brim_width}), scaled(Vec2f{width + brim_width, 0}), scaled(Vec2f{width + brim_width, depth + brim_width}),
-                                        scaled(Vec2f{0, depth})};
+        wipe_tower_mesh_data->bottom = {scaled(Vec2f{-brim_width, -brim_width}), scaled(Vec2f{width + brim_width, -brim_width}),
+                                        scaled(Vec2f{width + brim_width, depth + brim_width}), scaled(Vec2f{-brim_width, depth + brim_width})};
     } else {
         wipe_tower_mesh_data->real_wipe_tower_mesh = WipeTower::its_make_rib_tower(width, depth, height, rib_length, rib_width, fillet_wall);
         wipe_tower_mesh_data->bottom               = WipeTower::rib_section(width, depth, rib_length, rib_width, fillet_wall);

src/libslic3r/Print.hpp

@@ -782,6 +782,9 @@ struct WipeTowerData
 
     // Depth of the wipe tower to pass to GLCanvas3D for exact bounding box:
     float                                                 depth;
+    // Effective width (a rib wall squares the tower): the estimate until generation, then the
+    // generated width, so it never disagrees with depth.
+    float                                                 width;
     std::vector<std::pair<float, float>>                  z_and_depth_pairs;
     float                                                 brim_width;
     float                                                 height;
@@ -795,12 +798,13 @@ struct WipeTowerData
         used_filament.clear();
         number_of_toolchanges = -1;
         depth = 0.f;
+        width = 0.f;
         brim_width = 0.f;
         height = 0.f;
         rib_offset = Vec2f::Zero();
         wipe_tower_mesh_data  = std::nullopt;
     }
-    void construct_mesh(float width, float depth, float height, float brim_width, bool is_rib_wipe_tower, float rib_width, float rib_length, bool fillet_wall);
+    void construct_mesh(float width, float depth, float height, float brim_width, bool is_rib_wipe_tower, float rib_width, float rib_length, bool fillet_wall, float cone_angle = 0.f);
 
 private:
 	// Only allow the WipeTowerData to be instantiated internally by Print, 

src/libslic3r/Support/TreeSupport.cpp

@@ -2846,7 +2846,9 @@ void TreeSupport::drop_nodes()
             const MinimumSpanningTree& mst = spanning_trees[group_index];
             //In the first pass, merge all nodes that are close together.
             std::vector<std::pair<const Point, SupportNode*>> nodes_vec(nodes_this_part.begin(), nodes_this_part.end());
-            tbb::parallel_for_each(nodes_vec.begin(), nodes_vec.end(), [&](const std::pair<const Point, SupportNode*>& entry) {
+            // Sequential: nodes merge into and invalidate each other in place, so parallel execution
+            // makes the merge order (and thus the result) depend on thread scheduling.
+            std::for_each(nodes_vec.begin(), nodes_vec.end(), [&](const std::pair<const Point, SupportNode*>& entry) {
                 SupportNode* p_node = entry.second;
                 SupportNode& node = *p_node;
                 if (!p_node->valid)
@@ -2934,7 +2936,32 @@ void TreeSupport::drop_nodes()
             );
 
             //In the second pass, move all middle nodes.
-            tbb::parallel_for_each(nodes_vec.begin(), nodes_vec.end(), [&](const std::pair<const Point, SupportNode*>& entry) {
+            // Still parallel: this pass only reads other nodes. Side effects (invalidation, new
+            // nodes, contact_nodes/unsupported_branch_leaves updates) are recorded per node and
+            // applied afterwards in node order. Node creation must be deferred too, since
+            // SupportNode's constructor writes `parent->child = this` on other nodes.
+            struct PendingNode {
+                Point        position;
+                int          distance_to_top           = 0;
+                int          support_roof_layers_below = 0;
+                bool         to_buildplate             = false;
+                SupportNode *parent                    = nullptr;
+                bool         zero_max_move             = false;
+                bool         has_overhang              = false;
+                ExPolygon    overhang;
+                bool         clamp_radius              = false;
+                coordf_t     parent_radius             = 0;
+                double       dist_to_outer             = 0;
+            };
+            struct PassTwoResult {
+                bool                     invalidate       = false;
+                bool                     unsupported_leaf = false;
+                std::vector<PendingNode> pending;
+            };
+            std::vector<PassTwoResult> pass2_results(nodes_vec.size());
+            auto pass2_body = [&](size_t node_idx) {
+                const std::pair<const Point, SupportNode*>& entry = nodes_vec[node_idx];
+                PassTwoResult& pass2_out = pass2_results[node_idx];
 
                 SupportNode* p_node = entry.second;
                 const SupportNode& node = *p_node;
@@ -2949,14 +2976,16 @@ void TreeSupport::drop_nodes()
                     ExPolygons overhangs_next = diff_clipped({ node.overhang }, get_collision(0, obj_layer_nr_next));
                     for(auto& overhang:overhangs_next) {
                         Point        next_pt     = overhang.contour.centroid();
-                        SupportNode *next_node   = m_ts_data->create_node(next_pt, p_node->distance_to_top + 1, obj_layer_nr_next,
-                                                                          p_node->support_roof_layers_below - (p_node->distance_to_top >= 0 ? 1 : 0),
-                                                                          to_buildplate, p_node, print_z_next, height_next);
-                        next_node->max_move_dist = 0;
-                        next_node->overhang = std::move(overhang);
-                        m_ts_data->m_mutex.lock();
-                        contact_nodes[layer_nr_next].emplace_back(next_node);
-                        m_ts_data->m_mutex.unlock();
+                        PendingNode pending;
+                        pending.position                  = next_pt;
+                        pending.distance_to_top           = p_node->distance_to_top + 1;
+                        pending.support_roof_layers_below = p_node->support_roof_layers_below - (p_node->distance_to_top >= 0 ? 1 : 0);
+                        pending.to_buildplate             = to_buildplate;
+                        pending.parent                    = p_node;
+                        pending.zero_max_move             = true;
+                        pending.has_overhang              = true;
+                        pending.overhang                  = std::move(overhang);
+                        pass2_out.pending.emplace_back(std::move(pending));
 
                     }
                     return;
@@ -2973,17 +3002,17 @@ void TreeSupport::drop_nodes()
                     {
                         if (support_on_buildplate_only)
                         {
-                            unsupported_branch_leaves.push_front({ layer_nr, p_node });
+                            pass2_out.unsupported_leaf = true;
                         }
                         else {
-                            p_node->valid = false;
+                            pass2_out.invalidate = true;
                         }
                         return;
                     }
                     // if the link between parent and current is cut by contours, mark current as bottom contact node
                     if (p_node->parent && intersection_ln({p_node->position, p_node->parent->position}, layer_contours).empty()==false)
                     {
-                        p_node->valid = false;
+                        pass2_out.invalidate = true;
                         return;
                     }
                 }
@@ -3096,20 +3125,47 @@ void TreeSupport::drop_nodes()
                 }
                 auto              next_collision = get_collision(0, obj_layer_nr_next);
                 const bool   to_buildplate  = !is_inside_ex(m_ts_data->m_layer_outlines[obj_layer_nr_next], next_layer_vertex);
-                SupportNode *     next_node     = m_ts_data->create_node(next_layer_vertex, node.distance_to_top + 1, obj_layer_nr_next,
-                    node.support_roof_layers_below - (node.distance_to_top >= 0 ? 1 : 0),
-                    to_buildplate, p_node, print_z_next, height_next);
                 // don't increase radius if next node will collide partially with the object (STUDIO-7883)
-                to_outside             = projection_onto(next_collision, next_node->position);
+                to_outside             = projection_onto(next_collision, next_layer_vertex);
                 direction_to_outer     = to_outside - node.position;
                 double dist_to_outer   = unscale_(direction_to_outer.cast<double>().norm());
-                next_node->radius      = std::max(node.radius, std::min(next_node->radius, dist_to_outer));
-                get_max_move_dist(next_node);
-                m_ts_data->m_mutex.lock();
-                contact_nodes[layer_nr_next].push_back(next_node);
-                m_ts_data->m_mutex.unlock();
+                PendingNode pending;
+                pending.position                  = next_layer_vertex;
+                pending.distance_to_top           = node.distance_to_top + 1;
+                pending.support_roof_layers_below = node.support_roof_layers_below - (node.distance_to_top >= 0 ? 1 : 0);
+                pending.to_buildplate             = to_buildplate;
+                pending.parent                    = p_node;
+                pending.clamp_radius              = true;
+                pending.parent_radius             = node.radius;
+                pending.dist_to_outer             = dist_to_outer;
+                pass2_out.pending.emplace_back(std::move(pending));
+            };
+            tbb::parallel_for(tbb::blocked_range<size_t>(0, nodes_vec.size()),
+                [&pass2_body](const tbb::blocked_range<size_t>& node_range) {
+                    for (size_t node_idx = node_range.begin(); node_idx < node_range.end(); ++ node_idx)
+                        pass2_body(node_idx);
+                });
+            // Apply the recorded side effects in node order.
+            for (size_t node_idx = 0; node_idx < nodes_vec.size(); ++ node_idx) {
+                PassTwoResult& pass2_out = pass2_results[node_idx];
+                for (PendingNode& pending : pass2_out.pending) {
+                    SupportNode* next_node = m_ts_data->create_node(pending.position, pending.distance_to_top, obj_layer_nr_next,
+                        pending.support_roof_layers_below, pending.to_buildplate, pending.parent, print_z_next, height_next);
+                    if (pending.zero_max_move)
+                        next_node->max_move_dist = 0;
+                    if (pending.has_overhang)
+                        next_node->overhang = std::move(pending.overhang);
+                    if (pending.clamp_radius) {
+                        next_node->radius = std::max(pending.parent_radius, std::min(next_node->radius, pending.dist_to_outer));
+                        get_max_move_dist(next_node);
+                    }
+                    contact_nodes[layer_nr_next].push_back(next_node);
+                }
+                if (pass2_out.unsupported_leaf)
+                    unsupported_branch_leaves.push_front({ layer_nr, nodes_vec[node_idx].second });
+                if (pass2_out.invalidate)
+                    nodes_vec[node_idx].second->valid = false;
             }
-            );
         }
 
 #ifdef SUPPORT_TREE_DEBUG_TO_SVG

src/libslic3r/Support/TreeSupport3D.cpp

@@ -2382,13 +2382,10 @@ static void merge_influence_areas(
     size_t num_buckets_initial;
     {
         // How many buckets per first merge iteration?
-        const size_t num_threads     = tbb::this_task_arena::max_concurrency();
-        // 4 buckets per thread if possible,
-        const size_t num_buckets_min = (input_size + 2) / 4;
-        // 2 buckets per thread otherwise.
-        const size_t num_buckets_max = input_size / 2;
-        num_buckets_initial          = num_buckets_min >= num_threads ? num_buckets_min : num_buckets_max;
-        const size_t bucket_size     = num_buckets_min >= num_threads ? 4 : 2;
+        // Fixed at 4: merging is not associative, so sizing buckets off max_concurrency() made
+        // results depend on the core count of the slicing machine.
+        const size_t bucket_size     = 4;
+        num_buckets_initial          = (input_size + 2) / 4;
         // Fill in the buckets.
         SupportElementMerging *it = influence_areas.data();
         // Reserve one more bucket to keep a single influence area which will not be merged in the first iteration.

src/libslic3r/Utils.hpp

@@ -255,6 +255,10 @@ extern bool is_gallery_file(const std::string& path, char const* type);
 extern bool is_shapes_dir(const std::string& dir);
 //BBS: add json support
 extern bool is_json_file(const std::string& path);
+// True if rel_path is relative, has no ".." component and, joined to root, still resolves inside it.
+// Both '/' and '\\' are treated as separators on every platform, so an archive rejected on one OS
+// is rejected on all of them.
+extern bool is_path_within_root(const std::string &rel_path, const boost::filesystem::path &root);
 
 // Orca: custom protocal support utils
 inline bool is_orca_open(const std::string& url) { return boost::starts_with(url, "orcaslicer://open"); }

src/libslic3r/libslic3r.h

@@ -93,6 +93,9 @@ static constexpr double INSET_OVERLAP_TOLERANCE = 0.4;
 static constexpr double EXTERNAL_INFILL_MARGIN = 3;
 static constexpr double BRIDGE_INFILL_MARGIN = 1;
 static constexpr double WIPE_TOWER_MARGIN = 1.;
+// Margin for system placement of the wipe tower (defaults, re-placement, CLI). Positions
+// within WIPE_TOWER_MARGIN stay valid: a user drag down to that limit is respected.
+static constexpr double WIPE_TOWER_AUTO_MARGIN = 15.;
 //FIXME Better to use an inline function with an explicit return type.
 //inline coord_t scale_(coordf_t v) { return coord_t(floor(v / SCALING_FACTOR + 0.5f)); }
 #define scale_(val) ((val) / SCALING_FACTOR)

src/libslic3r/utils.cpp

@@ -1088,6 +1088,30 @@ bool is_json_file(const std::string& path)
 	return boost::iends_with(path, ".json");
 }
 
+bool is_path_within_root(const std::string &rel_path, const boost::filesystem::path &root)
+{
+    auto is_separator = [](char c) { return c == '/' || c == '\\'; };
+    if (rel_path.empty() || is_separator(rel_path.front()) || (rel_path.size() > 1 && rel_path[1] == ':'))
+        return false;
+    for (size_t start = 0; start <= rel_path.size();) {
+        size_t end = start;
+        while (end < rel_path.size() && !is_separator(rel_path[end]))
+            ++end;
+        if (rel_path.compare(start, end - start, "..") == 0)
+            return false;
+        start = end + 1;
+    }
+    // Resolve against the canonical root so a symlink inside it cannot lead back out.
+    try {
+        const std::string root_str = boost::filesystem::weakly_canonical(root).string();
+        const std::string full_str = boost::filesystem::weakly_canonical(root / rel_path).string();
+        return full_str.compare(0, root_str.size(), root_str) == 0 &&
+               (full_str.size() == root_str.size() || full_str[root_str.size()] == boost::filesystem::path::preferred_separator);
+    } catch (const boost::filesystem::filesystem_error &) {
+        return false;
+    }
+}
+
 bool is_img_file(const std::string &path)
 {
 	return boost::iends_with(path, ".png") || boost::iends_with(path, ".svg");