Merge branch 'master' of https://github.com/prusa3d/PrusaSlicer into et_new_camera_movements

CMakeLists.txt

@@ -523,21 +523,28 @@ add_custom_target(gettext_make_pot
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
     COMMENT "Generate pot file from strings in the source tree"
 )
-add_custom_target(gettext_merge_po_with_pot
+
+add_custom_target(gettext_merge_community_po_with_pot
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
-    COMMENT "Merge localization po with new generted pot file"
+    COMMENT "Merge community po with new generated pot file"
 )
 file(GLOB L10N_PO_FILES "${L10N_DIR}/*/PrusaSlicer*.po")
+# list of names of directories, which are licalized by PS internally
+list(APPEND PS_L10N_DIRS "cs" "de" "es" "fr" "it" "ja" "pl")
 foreach(po_file ${L10N_PO_FILES})
-    #GET_FILENAME_COMPONENT(po_dir "${po_file}" DIRECTORY)
+    GET_FILENAME_COMPONENT(po_dir "${po_file}" DIRECTORY)
-    #SET(po_new_file "${po_dir}/PrusaSlicer_.po")
+    GET_FILENAME_COMPONENT(po_dir_name "${po_dir}" NAME)
-    add_custom_command(
+    list(FIND PS_L10N_DIRS ${po_dir_name} found_dir_id)
-        TARGET gettext_merge_po_with_pot PRE_BUILD
+    # found_dir_id==-1 means that po_dir_name wasn't found in PS_L10N_DIRS
-        COMMAND msgmerge -N -o ${po_file} ${po_file} "${L10N_DIR}/PrusaSlicer.pot"
+    if(found_dir_id LESS 0)
-        # delete obsolete lines from resulting PO to avoid conflicts after a merging of it with wxWidgets.po
+        add_custom_command(
-        COMMAND msgattrib --no-obsolete -o ${po_file} ${po_file}
+            TARGET gettext_merge_community_po_with_pot PRE_BUILD
-        DEPENDS ${po_file}
+            COMMAND msgmerge -N -o ${po_file} ${po_file} "${L10N_DIR}/PrusaSlicer.pot"
-    )
+            # delete obsolete lines from resulting PO to avoid conflicts after a merging of it with wxWidgets.po
+            COMMAND msgattrib --no-obsolete -o ${po_file} ${po_file}
+            DEPENDS ${po_file}
+        )
+    endif()
 endforeach()
 
 add_custom_target(gettext_concat_wx_po_with_po
@@ -545,7 +552,6 @@ add_custom_target(gettext_concat_wx_po_with_po
     COMMENT "Concatenate and merge wxWidgets localization po with PrusaSlicer po file"
 )
 file(GLOB L10N_PO_FILES "${L10N_DIR}/*/PrusaSlicer*.po")
-file(GLOB L10N_WX_PO_FILES "${L10N_DIR}/*/PrusaSlicer*.po")
 foreach(po_file ${L10N_PO_FILES})
     GET_FILENAME_COMPONENT(po_dir "${po_file}" DIRECTORY)
     GET_FILENAME_COMPONENT(po_dir_name "${po_dir}" NAME)

src/libslic3r/Brim.cpp

@@ -10,7 +10,10 @@
 #include <algorithm>
 #include <numeric>
 #include <unordered_set>
+#include <mutex>
+
 #include <tbb/parallel_for.h>
+#include <boost/thread/lock_guard.hpp>
 
 #ifndef NDEBUG
     // #define BRIM_DEBUG_TO_SVG
@@ -200,20 +203,94 @@ static ExPolygons top_level_outer_brim_area(const Print                   &print
     return diff_ex(brim_area, no_brim_area);
 }
 
-static ExPolygons inner_brim_area(const Print                   &print,
+// Return vector of booleans indicated if polygons from bottom_layers_expolygons contain another polygon or not.
-                                  const ConstPrintObjectPtrs    &top_level_objects_with_brim,
+// Every ExPolygon is counted as several Polygons (contour and holes). Contour polygon is always processed before holes.
-                                  const std::vector<ExPolygons> &bottom_layers_expolygons,
+static std::vector<bool> has_polygons_nothing_inside(const Print &print, const std::vector<ExPolygons> &bottom_layers_expolygons)
-                                  const float                    no_brim_offset)
 {
     assert(print.objects().size() == bottom_layers_expolygons.size());
+    Polygons islands;
+    for(size_t print_object_idx = 0; print_object_idx < print.objects().size(); ++print_object_idx) {
+        const PrintObject *object         = print.objects()[print_object_idx];
+        const Polygons     islands_object = to_polygons(bottom_layers_expolygons[print_object_idx]);
+
+        islands.reserve(islands.size() + object->instances().size() * islands_object.size());
+        for (const PrintInstance &instance : object->instances())
+            append_and_translate(islands, islands_object, instance);
+    }
+
+    ClipperLib_Z::Paths islands_clip;
+    islands_clip.reserve(islands.size());
+    for (const Polygon &poly : islands) {
+        size_t             island_idx = &poly - &islands.front();
+        ClipperLib_Z::Path island_clip;
+        for (const Point &pt : poly.points)
+            island_clip.emplace_back(pt.x(), pt.y(), island_idx + 1);
+        islands_clip.emplace_back(island_clip);
+    }
+
+    ClipperLib_Z::Clipper clipper;
+    // Always assign zero to detect cases when two polygons are overlapping.
+    clipper.ZFillFunction([](const ClipperLib_Z::IntPoint &e1bot, const ClipperLib_Z::IntPoint &e1top, const ClipperLib_Z::IntPoint &e2bot, const ClipperLib_Z::IntPoint &e2top, ClipperLib_Z::IntPoint &pt) {
+        pt.z() = 0;
+    });
+
+    clipper.AddPaths(islands_clip, ClipperLib_Z::ptSubject, true);
+    ClipperLib_Z::PolyTree islands_polytree;
+    clipper.Execute(ClipperLib_Z::ctUnion, islands_polytree, ClipperLib_Z::pftEvenOdd, ClipperLib_Z::pftEvenOdd);
+
+    std::vector<bool> has_nothing_inside(islands.size());
+    std::function<void(const ClipperLib_Z::PolyNode&)> check_contours = [&check_contours, &has_nothing_inside](const ClipperLib_Z::PolyNode &parent_node)->void {
+        if (!parent_node.Childs.empty())
+            for(const ClipperLib_Z::PolyNode *child_node : parent_node.Childs)
+                check_contours(*child_node);
+
+        if (parent_node.Childs.empty() && !parent_node.Contour.empty() && parent_node.Contour.front().z() != 0) {
+            int polygon_idx = parent_node.Contour.front().z();
+            assert(polygon_idx > 0 && polygon_idx <= int(has_nothing_inside.size()));
+
+            // The whole contour must have the same ID. In other cases, some counters overlap.
+            for (const ClipperLib_Z::IntPoint &point : parent_node.Contour)
+                if (polygon_idx != point.z())
+                    return;
+
+            has_nothing_inside[polygon_idx - 1] = true;
+        }
+    };
+
+    check_contours(islands_polytree);
+    return has_nothing_inside;
+}
+
+// INNERMOST means that ExPolygon doesn't contain any other ExPolygons.
+// NORMAL is for other cases.
+enum class InnerBrimType {NORMAL, INNERMOST};
+
+struct InnerBrimExPolygons
+{
+    ExPolygons    brim_area;
+    InnerBrimType type       = InnerBrimType::NORMAL;
+    double        brim_width = 0.;
+};
+
+static std::vector<InnerBrimExPolygons> inner_brim_area(const Print                   &print,
+                                                        const ConstPrintObjectPtrs    &top_level_objects_with_brim,
+                                                        const std::vector<ExPolygons> &bottom_layers_expolygons,
+                                                        const float                    no_brim_offset)
+{
+    assert(print.objects().size() == bottom_layers_expolygons.size());
+    std::vector<bool>          has_nothing_inside = has_polygons_nothing_inside(print, bottom_layers_expolygons);
     std::unordered_set<size_t> top_level_objects_idx;
     top_level_objects_idx.reserve(top_level_objects_with_brim.size());
     for (const PrintObject *object : top_level_objects_with_brim)
         top_level_objects_idx.insert(object->id().id);
 
-    ExPolygons brim_area;
+    std::vector<ExPolygons> brim_area_innermost(print.objects().size());
-    ExPolygons no_brim_area;
+    ExPolygons              brim_area;
-    Polygons   holes;
+    ExPolygons              no_brim_area;
+    Polygons                holes_reversed;
+
+    // polygon_idx must correspond to idx generated inside has_polygons_nothing_inside()
+    size_t polygon_idx = 0;
     for(size_t print_object_idx = 0; print_object_idx < print.objects().size(); ++print_object_idx) {
         const PrintObject *object          = print.objects()[print_object_idx];
         const BrimType     brim_type       = object->config().brim_type.value;
@@ -221,9 +298,10 @@ static ExPolygons inner_brim_area(const Print                   &print,
         const float        brim_width      = scale_(object->config().brim_width.value);
         const bool         top_outer_brim  = top_level_objects_idx.find(object->id().id) != top_level_objects_idx.end();
 
+        ExPolygons brim_area_innermost_object;
         ExPolygons brim_area_object;
         ExPolygons no_brim_area_object;
-        Polygons   holes_object;
+        Polygons   holes_reversed_object;
         for (const ExPolygon &ex_poly : bottom_layers_expolygons[print_object_idx]) {
             if (brim_type == BrimType::btOuterOnly || brim_type == BrimType::btOuterAndInner) {
                 if (top_outer_brim)
@@ -235,8 +313,20 @@ static ExPolygons inner_brim_area(const Print                   &print,
             // After 7ff76d07684858fd937ef2f5d863f105a10f798e offset and shrink don't work with CW polygons (holes), so let's make it CCW.
             Polygons ex_poly_holes_reversed = ex_poly.holes;
             polygons_reverse(ex_poly_holes_reversed);
-            if (brim_type == BrimType::btInnerOnly || brim_type == BrimType::btOuterAndInner)
+            for (const PrintInstance &instance : object->instances()) {
-                append(brim_area_object, diff_ex(shrink_ex(ex_poly_holes_reversed, brim_separation, ClipperLib::jtSquare), shrink_ex(ex_poly_holes_reversed, brim_width + brim_separation, ClipperLib::jtSquare)));
+                ++polygon_idx; // Increase idx because of the contour of the ExPolygon.
+
+                if (brim_type == BrimType::btInnerOnly || brim_type == BrimType::btOuterAndInner)
+                    for(const Polygon &hole : ex_poly_holes_reversed) {
+                        size_t hole_idx = &hole - &ex_poly_holes_reversed.front();
+                        if (has_nothing_inside[polygon_idx + hole_idx])
+                            append(brim_area_innermost_object, shrink_ex({hole}, brim_separation, ClipperLib::jtSquare));
+                        else
+                            append(brim_area_object, diff_ex(shrink_ex({hole}, brim_separation, ClipperLib::jtSquare), shrink_ex({hole}, brim_width + brim_separation, ClipperLib::jtSquare)));
+                    }
+
+                polygon_idx += ex_poly.holes.size(); // Increase idx for every hole of the ExPolygon.
+            }
 
             if (brim_type == BrimType::btInnerOnly || brim_type == BrimType::btNoBrim)
                 append(no_brim_area_object, diff_ex(offset(ex_poly.contour, no_brim_offset, ClipperLib::jtSquare), ex_poly_holes_reversed));
@@ -244,18 +334,34 @@ static ExPolygons inner_brim_area(const Print                   &print,
             if (brim_type == BrimType::btOuterOnly || brim_type == BrimType::btNoBrim)
                 append(no_brim_area_object, diff_ex(ExPolygon(ex_poly.contour), shrink_ex(ex_poly_holes_reversed, no_brim_offset, ClipperLib::jtSquare)));
 
-            append(holes_object, ex_poly_holes_reversed);
+            append(holes_reversed_object, ex_poly_holes_reversed);
         }
         append(no_brim_area_object, offset_ex(bottom_layers_expolygons[print_object_idx], brim_separation, ClipperLib::jtSquare));
 
         for (const PrintInstance &instance : object->instances()) {
+            append_and_translate(brim_area_innermost[print_object_idx], brim_area_innermost_object, instance);
             append_and_translate(brim_area, brim_area_object, instance);
             append_and_translate(no_brim_area, no_brim_area_object, instance);
-            append_and_translate(holes, holes_object, instance);
+            append_and_translate(holes_reversed, holes_reversed_object, instance);
         }
     }
+    assert(polygon_idx == has_nothing_inside.size());
 
-    return diff_ex(intersection_ex(to_polygons(std::move(brim_area)), holes), no_brim_area);
+    ExPolygons brim_area_innermost_merged;
+    // Append all innermost brim areas.
+    std::vector<InnerBrimExPolygons> brim_area_out;
+    for (size_t print_object_idx = 0; print_object_idx < print.objects().size(); ++print_object_idx)
+        if (const double brim_width = print.objects()[print_object_idx]->config().brim_width.value; !brim_area_innermost[print_object_idx].empty()) {
+            append(brim_area_innermost_merged, brim_area_innermost[print_object_idx]);
+            brim_area_out.push_back({std::move(brim_area_innermost[print_object_idx]), InnerBrimType::INNERMOST, brim_width});
+        }
+
+    // Append all normal brim areas.
+    brim_area_out.push_back({diff_ex(intersection_ex(to_polygons(std::move(brim_area)), holes_reversed), no_brim_area), InnerBrimType::NORMAL});
+
+    // Cut out a huge brim areas that overflows into the INNERMOST holes.
+    brim_area_out.back().brim_area = diff_ex(brim_area_out.back().brim_area, brim_area_innermost_merged);
+    return brim_area_out;
 }
 
 // Flip orientation of open polylines to minimize travel distance.
@@ -359,17 +465,28 @@ static void make_inner_brim(const Print                   &print,
                             ExtrusionEntityCollection     &brim)
 {
     assert(print.objects().size() == bottom_layers_expolygons.size());
-    const auto scaled_resolution = scaled<double>(print.config().gcode_resolution.value);
+    const auto                       scaled_resolution = scaled<double>(print.config().gcode_resolution.value);
-    Flow       flow = print.brim_flow();
+    Flow                             flow              = print.brim_flow();
-    ExPolygons islands_ex = inner_brim_area(print, top_level_objects_with_brim, bottom_layers_expolygons, float(flow.scaled_spacing()));
+    std::vector<InnerBrimExPolygons> inner_brims_ex    = inner_brim_area(print, top_level_objects_with_brim, bottom_layers_expolygons, float(flow.scaled_spacing()));
-    Polygons   loops;
+    Polygons                         loops;
-    islands_ex      = offset_ex(islands_ex, -0.5f * float(flow.scaled_spacing()), ClipperLib::jtSquare);
+    std::mutex                       loops_mutex;
-    for (size_t i = 0; !islands_ex.empty(); ++i) {
+    tbb::parallel_for(tbb::blocked_range<size_t>(0, inner_brims_ex.size()), [&inner_brims_ex, &flow, &scaled_resolution, &loops, &loops_mutex](const tbb::blocked_range<size_t> &range) {
-        for (ExPolygon &poly_ex : islands_ex)
+        for (size_t brim_idx = range.begin(); brim_idx < range.end(); ++brim_idx) {
-            poly_ex.douglas_peucker(scaled_resolution);
+            const InnerBrimExPolygons &inner_brim_ex = inner_brims_ex[brim_idx];
-        polygons_append(loops, to_polygons(islands_ex));
+            auto                       num_loops     = size_t(floor(inner_brim_ex.brim_width / flow.spacing()));
-        islands_ex = offset_ex(islands_ex, -float(flow.scaled_spacing()), ClipperLib::jtSquare);
+            ExPolygons                 islands_ex    = offset_ex(inner_brim_ex.brim_area, -0.5f * float(flow.scaled_spacing()), ClipperLib::jtSquare);
-    }
+            for (size_t i = 0; (inner_brim_ex.type == InnerBrimType::INNERMOST ? i < num_loops : !islands_ex.empty()); ++i) {
+                for (ExPolygon &poly_ex : islands_ex)
+                    poly_ex.douglas_peucker(scaled_resolution);
+
+                {
+                    boost::lock_guard<std::mutex> lock(loops_mutex);
+                    polygons_append(loops, to_polygons(islands_ex));
+                }
+                islands_ex = offset_ex(islands_ex, -float(flow.scaled_spacing()), ClipperLib::jtSquare);
+            }
+        }
+    }); // end of parallel_for
 
     loops = union_pt_chained_outside_in(loops);
     std::reverse(loops.begin(), loops.end());

src/libslic3r/GCode.cpp

@@ -1047,7 +1047,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
 
     if (! print.config().gcode_substitutions.values.empty()) {
         m_find_replace = make_unique<GCodeFindReplace>(print.config());
-        file.set_find_replace(m_find_replace.get());
+        file.set_find_replace(m_find_replace.get(), false);
     }
 
     // resets analyzer's tracking data
@@ -1155,6 +1155,9 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
     }
     print.throw_if_canceled();
 
+    // Starting now, the G-code find / replace post-processor will be enabled.
+    file.find_replace_enable();
+
     // adds tags for time estimators
     if (print.config().remaining_times.value)
         file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::First_Line_M73_Placeholder).c_str());
@@ -1461,6 +1464,10 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
     	file.write_format("; total toolchanges = %i\n", print.m_print_statistics.total_toolchanges);
     file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Estimated_Printing_Time_Placeholder).c_str());
 
+    // From now to the end of G-code, the G-code find / replace post-processor will be disabled.
+    // Thus the PrusaSlicer generated config will NOT be processed by the G-code post-processor, see GH issue #7952.
+    file.find_replace_supress();
+
     // Append full config, delimited by two 'phony' configuration keys prusaslicer_config = begin and prusaslicer_config = end.
     // The delimiters are structured as configuration key / value pairs to be parsable by older versions of PrusaSlicer G-code viewer.
     {
@@ -1518,7 +1525,7 @@ void GCode::process_layers(
     );
 
     // The pipeline elements are joined using const references, thus no copying is performed.
-    output_stream.set_find_replace(nullptr);
+    output_stream.find_replace_supress();
     if (m_spiral_vase && m_find_replace)
         tbb::parallel_pipeline(12, generator & spiral_vase & cooling & find_replace & output);
     else if (m_spiral_vase)
@@ -1527,7 +1534,7 @@ void GCode::process_layers(
         tbb::parallel_pipeline(12, generator & cooling & find_replace & output);
     else
         tbb::parallel_pipeline(12, generator & cooling & output);
-    output_stream.set_find_replace(m_find_replace.get());
+    output_stream.find_replace_enable();
 }
 
 // Process all layers of a single object instance (sequential mode) with a parallel pipeline:
@@ -1571,7 +1578,7 @@ void GCode::process_layers(
     );
 
     // The pipeline elements are joined using const references, thus no copying is performed.
-    output_stream.set_find_replace(nullptr);
+    output_stream.find_replace_supress();
     if (m_spiral_vase && m_find_replace)
         tbb::parallel_pipeline(12, generator & spiral_vase & cooling & find_replace & output);
     else if (m_spiral_vase)
@@ -1580,7 +1587,7 @@ void GCode::process_layers(
         tbb::parallel_pipeline(12, generator & cooling & find_replace & output);
     else
         tbb::parallel_pipeline(12, generator & cooling & output);
-    output_stream.set_find_replace(m_find_replace.get());
+    output_stream.find_replace_enable();
 }
 
 std::string GCode::placeholder_parser_process(const std::string &name, const std::string &templ, unsigned int current_extruder_id, const DynamicConfig *config_override)

src/libslic3r/GCode.hpp

@@ -196,7 +196,9 @@ private:
         // Set a find-replace post-processor to modify the G-code before GCodePostProcessor.
         // It is being set to null inside process_layers(), because the find-replace process
         // is being called on a secondary thread to improve performance.
-        void set_find_replace(GCodeFindReplace *find_replace) { m_find_replace = find_replace; }
+        void set_find_replace(GCodeFindReplace *find_replace, bool enabled) { m_find_replace_backup = find_replace; m_find_replace = enabled ? find_replace : nullptr; }
+        void find_replace_enable() { m_find_replace = m_find_replace_backup; }
+        void find_replace_supress() { m_find_replace = nullptr; }
 
         bool is_open() const { return f; }
         bool is_error() const;
@@ -220,6 +222,8 @@ private:
         FILE             *f { nullptr };
         // Find-replace post-processor to be called before GCodePostProcessor.
         GCodeFindReplace *m_find_replace { nullptr };
+        // If suppressed, the backoup holds m_find_replace.
+        GCodeFindReplace *m_find_replace_backup { nullptr };
         GCodeProcessor   &m_processor;
     };
     void            _do_export(Print &print, GCodeOutputStream &file, ThumbnailsGeneratorCallback thumbnail_cb);

src/libslic3r/MultiMaterialSegmentation.cpp

@@ -605,7 +605,7 @@ struct MMU_Graph
             if (arcs[arc_idx].to_idx == to_idx)
                 return;
         for (const size_t &arc_idx : this->nodes[to_idx].arc_idxs)
-            if (arcs[arc_idx].to_idx == to_idx)
+            if (arcs[arc_idx].to_idx == from_idx)
                 return;
 
         this->nodes[from_idx].arc_idxs.push_back(this->arcs.size());
@@ -1201,7 +1201,7 @@ static inline double compute_edge_length(const MMU_Graph &graph, const size_t st
     used_arcs[start_arc_idx]                = true;
     const MMU_Graph::Arc *arc               = &graph.arcs[start_arc_idx];
     size_t                idx               = start_idx;
-    double                line_total_length = (graph.nodes[arc->to_idx].point - graph.nodes[idx].point).norm();;
+    double                line_total_length = (graph.nodes[arc->to_idx].point - graph.nodes[idx].point).norm();
     while (graph.nodes[arc->to_idx].arc_idxs.size() == 2) {
         bool found = false;
         for (const size_t &arc_idx : graph.nodes[arc->to_idx].arc_idxs) {
@@ -1711,7 +1711,7 @@ std::vector<std::vector<ExPolygons>> multi_material_segmentation_by_painting(con
             // Such close points sometimes caused that the Voronoi diagram has self-intersecting edges around these vertices.
             // This consequently leads to issues with the extraction of colored segments by function extract_colored_segments.
             // Calling expolygons_simplify fixed these issues.
-            input_expolygons[layer_idx] = smooth_outward(expolygons_simplify(offset_ex(ex_polygons, -10.f * float(SCALED_EPSILON)), 5 * SCALED_EPSILON), 10 * coord_t(SCALED_EPSILON));
+            input_expolygons[layer_idx] = remove_duplicates(expolygons_simplify(offset_ex(ex_polygons, -10.f * float(SCALED_EPSILON)), 5 * SCALED_EPSILON), scaled<coord_t>(0.01), PI/6);
 
 #ifdef MMU_SEGMENTATION_DEBUG_INPUT
             {

src/libslic3r/MutablePolygon.cpp

@@ -37,6 +37,36 @@ void remove_duplicates(MutablePolygon &polygon, double eps)
     }
 }
 
+// Remove nearly duplicate points. If a distance between two points is less than scaled_eps
+// and if the angle between its surrounding lines is less than max_angle, the point will be removed.
+// May reduce the polygon down to empty polygon.
+void remove_duplicates(MutablePolygon &polygon, coord_t scaled_eps, const double max_angle)
+{
+    if (polygon.size() >= 3) {
+        auto cos_max_angle_2 = Slic3r::sqr<double>(cos(max_angle));
+        auto scaled_eps_sqr  = Slic3r::sqr<int64_t>(scaled_eps);
+        auto begin           = polygon.begin();
+        auto it              = begin;
+        for (++it; it != begin;) {
+            auto    prev        = it.prev();
+            auto    next        = it.next();
+            Vec2i64 v1          = (*it - *prev).cast<int64_t>();
+            int64_t v1_sqr_norm = v1.squaredNorm();
+            if (v1_sqr_norm < scaled_eps_sqr) {
+                if (Vec2i64 v2 = (*next - *prev).cast<int64_t>();
+                    Slic3r::sqr<double>(double(v1.dot(v2))) > cos_max_angle_2 * double(v1_sqr_norm) * double(v2.squaredNorm())) {
+                    it = it.remove();
+                    continue;
+                }
+            }
+            it = next;
+        }
+    }
+
+    if (polygon.size() < 3)
+        polygon.clear();
+}
+
 // Adapted from Cura ConstPolygonRef::smooth_corner_complex() by Tim Kuipers.
 // A concave corner at it1 with position p1 has been removed by the caller between it0 and it2, where |p2 - p0| < shortcut_length.
 // Now try to close a concave crack by walking left from it0 and right from it2 as long as the new clipping edge is smaller than shortcut_length

src/libslic3r/MutablePolygon.hpp

@@ -309,6 +309,28 @@ inline bool operator!=(const MutablePolygon &p1, const MutablePolygon &p2) { ret
 void remove_duplicates(MutablePolygon &polygon);
 void remove_duplicates(MutablePolygon &polygon, double eps);
 
+// Remove nearly duplicate points. If a distance between two points is less than scaled_eps
+// and if the angle between its surrounding lines is less than max_angle, the point will be removed.
+// May reduce the polygon down to empty polygon.
+void remove_duplicates(MutablePolygon &polygon, coord_t scaled_eps, const double max_angle);
+inline ExPolygons remove_duplicates(ExPolygons expolygons, coord_t scaled_eps, double max_angle)
+{
+    MutablePolygon mp;
+    for (ExPolygon &expolygon : expolygons) {
+        mp.assign(expolygon.contour, expolygon.contour.size() * 2);
+        remove_duplicates(mp, scaled_eps, max_angle);
+        mp.polygon(expolygon.contour);
+        for (Polygon &hole : expolygon.holes) {
+            mp.assign(hole, hole.size() * 2);
+            remove_duplicates(mp, scaled_eps, max_angle);
+            mp.polygon(hole);
+        }
+        expolygon.holes.erase(std::remove_if(expolygon.holes.begin(), expolygon.holes.end(), [](const auto &p) { return p.empty(); }), expolygon.holes.end());
+    }
+    expolygons.erase(std::remove_if(expolygons.begin(), expolygons.end(), [](const auto &p) { return p.empty(); }), expolygons.end());
+    return expolygons;
+}
+
 void smooth_outward(MutablePolygon &polygon, coord_t clip_dist_scaled);
 
 inline Polygon smooth_outward(Polygon polygon, coord_t clip_dist_scaled)

src/libslic3r/Preset.cpp

@@ -412,6 +412,8 @@ void Preset::set_visible_from_appconfig(const AppConfig &app_config)
 	    	for (auto it = this->renamed_from.begin(); ! is_visible && it != this->renamed_from.end(); ++ it)
 	    		is_visible = has(*it);
 	    }
+        else 
+			is_visible = false;
     }
 }
 
@@ -791,7 +793,8 @@ std::pair<Preset*, bool> PresetCollection::load_external_preset(
             // The source config may contain keys from many possible preset types. Just copy those that relate to this preset.
             this->get_edited_preset().config.apply_only(combined_config, keys, true);
             this->update_dirty();
-            update_saved_preset_from_current_preset();
+            // Don't save the newly loaded project as a "saved into project" state.
+            //update_saved_preset_from_current_preset();
             assert(this->get_edited_preset().is_dirty);
             return std::make_pair(&(*it), this->get_edited_preset().is_dirty);
         }
@@ -1226,7 +1229,6 @@ Preset& PresetCollection::select_preset(size_t idx)
         idx = first_visible_idx();
     m_idx_selected = idx;
     m_edited_preset = m_presets[idx];
-    update_saved_preset_from_current_preset();
     bool default_visible = ! m_default_suppressed || m_idx_selected < m_num_default_presets;
     for (size_t i = 0; i < m_num_default_presets; ++i)
         m_presets[i].is_visible = default_visible;

src/libslic3r/Preset.hpp

@@ -397,6 +397,7 @@ public:
     void            discard_current_changes() {
         m_presets[m_idx_selected].reset_dirty();
         m_edited_preset = m_presets[m_idx_selected];
+        // Don't save the resetted preset state as a "saved into project" state.
 //        update_saved_preset_from_current_preset();
     }
 

src/libslic3r/Print.cpp

@@ -660,7 +660,8 @@ std::string Print::validate(std::string* warning) const
         bool layer_gcode_resets_extruder        = boost::regex_search(m_config.layer_gcode.value, regex_g92e0);
         if (m_config.use_relative_e_distances) {
             // See GH issues #6336 #5073
-            if (! before_layer_gcode_resets_extruder && ! layer_gcode_resets_extruder)
+            if ((m_config.gcode_flavor == gcfMarlinLegacy || m_config.gcode_flavor == gcfMarlinFirmware) &&
+                ! before_layer_gcode_resets_extruder && ! layer_gcode_resets_extruder)
                 return L("Relative extruder addressing requires resetting the extruder position at each layer to prevent loss of floating point accuracy. Add \"G92 E0\" to layer_gcode.");
         } else if (before_layer_gcode_resets_extruder)
             return L("\"G92 E0\" was found in before_layer_gcode, which is incompatible with absolute extruder addressing.");

src/slic3r/GUI/GUI_App.cpp

@@ -1285,8 +1285,13 @@ bool GUI_App::on_init_inner()
     else
         load_current_presets();
 
+    // Save the active profiles as a "saved into project".
+    update_saved_preset_from_current_preset();
+
     if (plater_ != nullptr) {
+        // Save the names of active presets and project specific config into ProjectDirtyStateManager.
         plater_->reset_project_dirty_initial_presets();
+        // Update Project dirty state, update application title bar.
         plater_->update_project_dirty_from_presets();
     }
 
@@ -2447,16 +2452,13 @@ void GUI_App::update_saved_preset_from_current_preset()
     }
 }
 
-std::vector<std::pair<unsigned int, std::string>> GUI_App::get_selected_presets() const
+std::vector<const PresetCollection*> GUI_App::get_active_preset_collections() const
 {
-    std::vector<std::pair<unsigned int, std::string>> ret;
+    std::vector<const PresetCollection*> ret;
     PrinterTechnology printer_technology = preset_bundle->printers.get_edited_preset().printer_technology();
-    for (Tab* tab : tabs_list) {
+    for (const Tab* tab : tabs_list)
-        if (tab->supports_printer_technology(printer_technology)) {
+        if (tab->supports_printer_technology(printer_technology))
-            const PresetCollection* presets = tab->get_presets();
+            ret.push_back(tab->get_presets());
-            ret.push_back({ static_cast<unsigned int>(presets->type()), presets->get_selected_preset_name() });
-        }
-    }
     return ret;
 }
 

src/slic3r/GUI/GUI_App.hpp

@@ -252,7 +252,7 @@ public:
     bool            has_unsaved_preset_changes() const;
     bool            has_current_preset_changes() const;
     void            update_saved_preset_from_current_preset();
-    std::vector<std::pair<unsigned int, std::string>> get_selected_presets() const;
+    std::vector<const PresetCollection*> get_active_preset_collections() const;
     bool            check_and_save_current_preset_changes(const wxString& caption, const wxString& header, bool remember_choice = true, bool use_dont_save_insted_of_discard = false);
     void            apply_keeped_preset_modifications();
     bool            check_and_keep_current_preset_changes(const wxString& caption, const wxString& header, int action_buttons, bool* postponed_apply_of_keeped_changes = nullptr);

src/slic3r/GUI/GUI_ObjectSettings.cpp

@@ -141,6 +141,8 @@ bool ObjectSettings::update_settings_list()
             {
                 Option option = optgroup->get_option(opt);
                 option.opt.width = 12;
+                if (!option.opt.full_label.empty())
+                    option.opt.label = option.opt.full_label;
                 if (is_extruders_cat)
                     option.opt.max = wxGetApp().extruders_edited_cnt();
                 optgroup->append_single_option_line(option);

src/slic3r/GUI/Gizmos/GLGizmoCut.cpp

@@ -378,6 +378,8 @@ void GLGizmoCut::update_contours()
 
             MeshSlicingParams slicing_params;
             slicing_params.trafo = first_glvolume->get_instance_transformation().get_matrix();
+            slicing_params.trafo.pretranslate(Vec3d(0., 0., first_glvolume->get_sla_shift_z()));
+
             const Polygons polys = slice_mesh(m_cut_contours.mesh.its, m_cut_z, slicing_params);
             if (!polys.empty()) {
                 m_cut_contours.contours.init_from(polys, static_cast<float>(m_cut_z));

src/slic3r/GUI/MainFrame.cpp

@@ -859,7 +859,10 @@ bool MainFrame::save_project_as(const wxString& filename)
 {
     bool ret = (m_plater != nullptr) ? m_plater->export_3mf(into_path(filename)) : false;
     if (ret) {
-//        wxGetApp().update_saved_preset_from_current_preset();
+        // Make a copy of the active presets for detecting changes in preset values.
+        wxGetApp().update_saved_preset_from_current_preset();
+        // Save the names of active presets and project specific config into ProjectDirtyStateManager.
+        // Reset ProjectDirtyStateManager's state as saved, mark active UndoRedo step as saved with project.
         m_plater->reset_project_dirty_after_save();
     }
     return ret;

src/slic3r/GUI/MsgDialog.cpp

@@ -311,7 +311,11 @@ wxString get_wraped_wxString(const wxString& in, size_t line_len /*=80*/)
                 overwrite = true;
                 if (newline)
                     break;
-            } else if (in[j] == '/') {
+            } else if (in[j] == '/'
+#ifdef _WIN32
+                 || in[j] == '\\'
+#endif // _WIN32
+                 ) {
                 // Insert after the slash.
                 ibreak    = ++ j;
                 overwrite = false;

src/slic3r/GUI/Plater.cpp

@@ -499,6 +499,7 @@ FreqChangedParams::FreqChangedParams(wxWindow* parent) :
                 std::vector<float> extruders = dlg.get_extruders();
                 (project_config.option<ConfigOptionFloats>("wiping_volumes_matrix"))->values = std::vector<double>(matrix.begin(), matrix.end());
                 (project_config.option<ConfigOptionFloats>("wiping_volumes_extruders"))->values = std::vector<double>(extruders.begin(), extruders.end());
+                // Update Project dirty state, update application title bar.
                 wxGetApp().plater()->update_project_dirty_from_presets();
                 wxPostEvent(parent, SimpleEvent(EVT_SCHEDULE_BACKGROUND_PROCESS, parent));
             }
@@ -2351,7 +2352,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
     }
 
     const auto loading = _L("Loading") + dots;
-    wxProgressDialog dlg(loading, "", 100, find_toplevel_parent(q), wxPD_AUTO_HIDE);
+    wxProgressDialog progress_dlg(loading, "", 100, find_toplevel_parent(q), wxPD_AUTO_HIDE);
     wxBusyCursor busy;
 
     auto *new_model = (!load_model || one_by_one) ? nullptr : new Slic3r::Model();
@@ -2360,7 +2361,8 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
     int answer_convert_from_meters          = wxOK_DEFAULT;
     int answer_convert_from_imperial_units  = wxOK_DEFAULT;
 
-    for (size_t i = 0; i < input_files.size(); ++i) {
+    size_t input_files_size = input_files.size();
+    for (size_t i = 0; i < input_files_size; ++i) {
 #ifdef _WIN32
         auto path = input_files[i];
         // On Windows, we swap slashes to back slashes, see GH #6803 as read_from_file() does not understand slashes on Windows thus it assignes full path to names of loaded objects.
@@ -2370,8 +2372,8 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
         const auto &path = input_files[i];
 #endif // _WIN32
         const auto filename = path.filename();
-        dlg.Update(static_cast<int>(100.0f * static_cast<float>(i) / static_cast<float>(input_files.size())), _L("Loading file") + ": " + from_path(filename));
+        progress_dlg.Update(static_cast<int>(100.0f * static_cast<float>(i) / static_cast<float>(input_files.size())), _L("Loading file") + ": " + from_path(filename));
-        dlg.Fit();
+        progress_dlg.Fit();
 
         const bool type_3mf = std::regex_match(path.string(), pattern_3mf);
         const bool type_zip_amf = !type_3mf && std::regex_match(path.string(), pattern_zip_amf);
@@ -2382,17 +2384,28 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
         bool is_project_file = type_prusa;
         try {
             if (type_3mf || type_zip_amf) {
+#ifdef __linux__
+                // On Linux Constructor of the ProgressDialog calls DisableOtherWindows() function which causes a disabling of all children of the find_toplevel_parent(q)
+                // And a destructor of the ProgressDialog calls ReenableOtherWindows() function which revert previously disabled children.
+                // But if printer technology will be changes during project loading, 
+                // then related SLA Print and Materials Settings or FFF Print and Filaments Settings will be unparent from the wxNoteBook
+                // and that is why they will never be enabled after destruction of the ProgressDialog.
+                // So, distroy progress_gialog if we are loading project file
+                if (input_files_size == 1)
+                    progress_dlg.Destroy();
+#endif
                 DynamicPrintConfig config;
+                PrinterTechnology loaded_printer_technology {ptFFF};
                 {
                     DynamicPrintConfig config_loaded;
                     ConfigSubstitutionContext config_substitutions{ ForwardCompatibilitySubstitutionRule::Enable };
                     model = Slic3r::Model::read_from_archive(path.string(), &config_loaded, &config_substitutions, only_if(load_config, Model::LoadAttribute::CheckVersion));
                     if (load_config && !config_loaded.empty()) {
                         // Based on the printer technology field found in the loaded config, select the base for the config,
-                        PrinterTechnology printer_technology = Preset::printer_technology(config_loaded);
+                        loaded_printer_technology = Preset::printer_technology(config_loaded);
 
                         // We can't to load SLA project if there is at least one multi-part object on the bed
-                        if (printer_technology == ptSLA) {
+                        if (loaded_printer_technology == ptSLA) {
                             const ModelObjectPtrs& objects = q->model().objects;
                             for (auto object : objects)
                                 if (object->volumes.size() > 1) {
@@ -2404,7 +2417,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                                 }
                         }
 
-                        config.apply(printer_technology == ptFFF ?
+                        config.apply(loaded_printer_technology == ptFFF ?
                             static_cast<const ConfigBase&>(FullPrintConfig::defaults()) :
                             static_cast<const ConfigBase&>(SLAFullPrintConfig::defaults()));
                         // and place the loaded config over the base.
@@ -2435,7 +2448,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                             };
 
                             std::vector<std::string> names;
-                            if (printer_technology == ptFFF) {
+                            if (loaded_printer_technology == ptFFF) {
                                 update_selected_preset_visibility(preset_bundle->prints, names);
                                 for (const std::string& filament : preset_bundle->filament_presets) {
                                     Preset* preset = preset_bundle->filaments.find_preset(filament);
@@ -2466,7 +2479,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                             }
                         }
 
-                        if (printer_technology == ptFFF)
+                        if (loaded_printer_technology == ptFFF)
                             CustomGCode::update_custom_gcode_per_print_z_from_config(model.custom_gcode_per_print_z, &preset_bundle->project_config);
 
                         // For exporting from the amf/3mf we shouldn't check printer_presets for the containing information about "Print Host upload"
@@ -5257,8 +5270,11 @@ void Plater::new_project()
     take_snapshot(_L("New Project"), UndoRedo::SnapshotType::ProjectSeparator);
     Plater::SuppressSnapshots suppress(this);
     reset();
+    // Save the names of active presets and project specific config into ProjectDirtyStateManager.
     reset_project_dirty_initial_presets();
+    // Make a copy of the active presets for detecting changes in preset values.
     wxGetApp().update_saved_preset_from_current_preset();
+    // Update Project dirty state, update application title bar.
     update_project_dirty_from_presets();
 }
 
@@ -5287,7 +5303,11 @@ void Plater::load_project(const wxString& filename)
     if (! load_files({ into_path(filename) }).empty()) {
         // At least one file was loaded.
         p->set_project_filename(filename);
+        // Save the names of active presets and project specific config into ProjectDirtyStateManager.
         reset_project_dirty_initial_presets();
+        // Make a copy of the active presets for detecting changes in preset values.
+        wxGetApp().update_saved_preset_from_current_preset();
+        // Update Project dirty state, update application title bar.
         update_project_dirty_from_presets();
     }
 }
@@ -5972,7 +5992,6 @@ void Plater::export_stl_obj(bool extended, bool selection_only)
         }
         else if (0 <= instance_id && instance_id < int(mo.instances.size()))
             mesh.transform(mo.instances[instance_id]->get_matrix(), true);
-        
         return mesh;
     };
 

src/slic3r/GUI/ProjectDirtyStateManager.cpp

@@ -17,9 +17,11 @@ namespace GUI {
 
 void ProjectDirtyStateManager::update_from_undo_redo_stack(bool dirty)
 {
-    m_plater_dirty = dirty;
+    if (m_plater_dirty != dirty) {
-    if (const Plater *plater = wxGetApp().plater(); plater && wxGetApp().initialized())
+        m_plater_dirty = dirty;
-        wxGetApp().mainframe->update_title();
+        if (const Plater *plater = wxGetApp().plater(); plater && wxGetApp().initialized())
+            wxGetApp().mainframe->update_title();
+    }
 }
 
 void ProjectDirtyStateManager::update_from_presets()
@@ -27,11 +29,11 @@ void ProjectDirtyStateManager::update_from_presets()
     m_presets_dirty = false;
     // check switching of the presets only for exist/loaded project, but not for new
     GUI_App &app = wxGetApp();
-    if (!app.plater()->get_project_filename().IsEmpty()) {
+    bool has_project = ! app.plater()->get_project_filename().IsEmpty();
-        for (const auto& [type, name] : app.get_selected_presets())
+    for (const PresetCollection *preset_collection : app.get_active_preset_collections()) {
-            m_presets_dirty |= !m_initial_presets[type].empty() && m_initial_presets[type] != name;
+        auto type = preset_collection->type();
+        m_presets_dirty |= (has_project && !m_initial_presets[type].empty() && m_initial_presets[type] != preset_collection->get_selected_preset_name()) || preset_collection->saved_is_dirty();
     }
-    m_presets_dirty |= app.has_unsaved_preset_changes();
     m_project_config_dirty = m_initial_project_config != app.preset_bundle->project_config;
     app.mainframe->update_title();
 }
@@ -49,8 +51,8 @@ void ProjectDirtyStateManager::reset_initial_presets()
 {
     m_initial_presets.fill(std::string{});
     GUI_App &app = wxGetApp();
-    for (const auto& [type, name] : app.get_selected_presets())
+    for (const PresetCollection *preset_collection : app.get_active_preset_collections())
-        m_initial_presets[type] = name;
+        m_initial_presets[preset_collection->type()] = preset_collection->get_selected_preset_name();
     m_initial_project_config = app.preset_bundle->project_config;
 }
 

src/slic3r/GUI/Tab.cpp

@@ -1247,6 +1247,7 @@ void Tab::on_presets_changed()
     // to avoid needless preset loading from update() function
     m_dependent_tabs.clear();
 
+    // Update Project dirty state, update application title bar.
     wxGetApp().plater()->update_project_dirty_from_presets();
 }
 
@@ -4113,7 +4114,7 @@ wxSizer* TabPrint::create_manage_substitution_widget(wxWindow* parent)
 
     create_btn(&m_del_all_substitutions_btn, _L("Delete all"), "cross");
     m_del_all_substitutions_btn->Bind(wxEVT_BUTTON, [this, parent](wxCommandEvent e) {
-        if (MessageDialog(parent, _L("Are you sure you want to delete all substitutions?"), SLIC3R_APP_NAME, wxYES_NO | wxICON_QUESTION).
+        if (MessageDialog(parent, _L("Are you sure you want to delete all substitutions?"), SLIC3R_APP_NAME, wxYES_NO | wxCANCEL | wxICON_QUESTION).
             ShowModal() != wxID_YES)
             return;
         m_subst_manager.delete_all();

src/slic3r/GUI/Tab.hpp

@@ -371,6 +371,7 @@ public:
 
 	DynamicPrintConfig*	get_config() { return m_config; }
 	PresetCollection*	get_presets() { return m_presets; }
+	const PresetCollection* get_presets() const { return m_presets; }
 
 	void			on_value_change(const std::string& opt_key, const boost::any& value);
 

tests/fff_print/fff_print_tests.cpp

@@ -1,3 +1,18 @@
 #include <catch_main.hpp>
 
 #include "libslic3r/libslic3r.h"
+
+// __has_feature() is used later for Clang, this is for compatibility with other compilers (such as GCC and MSVC)
+#ifndef __has_feature
+#   define __has_feature(x) 0
+#endif
+
+// Print reports about memory leaks but exit with zero exit code when any memory leaks is found to make unit tests pass.
+// After merging the stable branch (2.4.1) with the master branch, this should be deleted.
+#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
+extern "C" {
+    const char *__lsan_default_options() {
+        return "exitcode=0";
+    }
+}
+#endif