CURA-11947 Improve multimaterial raft (#2095)

include/infill.h

@@ -41,7 +41,7 @@ class Infill
     Shape inner_contour_{}; //!< The part of the contour that will get filled with an infill pattern. Equals outer_contour minus the extra infill walls.
     coord_t infill_line_width_{}; //!< The line width of the infill lines to generate
     coord_t line_distance_{}; //!< The distance between two infill lines / polygons
-    coord_t infill_overlap_{}; //!< the distance by which to overlap with the actual area within which to generate infill
+    coord_t infill_overlap_{}; //!< The distance by which to overlap the inner infill pattern with the infill walls
     size_t infill_multiplier_{}; //!< the number of infill lines next to each other
     AngleDegrees fill_angle_{}; //!< for linear infill types: the angle of the infill lines (or the angle of the grid)
     coord_t z_{}; //!< height of the layer for which we generate infill
@@ -219,19 +219,17 @@ class Infill
      * This function is called within the generate() function but can also be called stand-alone
      *
      * \param toolpaths [out] The generated toolpaths. Binned by inset_idx.
-     * \param outer_contour [in,out] the outer contour, this is offsetted with the infill overlap
+     * \param outer_contour [in] the outer contour
      * \param wall_line_count [in] The number of walls that needs to be generated
      * \param line_width [in] The optimum wall line width of the walls
-     * \param infill_overlap [in] The overlap of the infill
      * \param settings [in] A settings storage to use for generating variable-width walls.
      * \return The inner contour of the wall toolpaths
      */
     static Shape generateWallToolPaths(
         std::vector<VariableWidthLines>& toolpaths,
-        Shape& outer_contour,
+        const Shape& outer_contour,
         const size_t wall_line_count,
         const coord_t line_width,
-        const coord_t infill_overlap,
         const Settings& settings,
         int layer_idx,
         SectionType section_type);

src/FffGcodeWriter.cpp

@@ -580,7 +580,6 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
     const size_t num_surface_layers = surface_settings.get<size_t>("raft_surface_layers");
 
     // some infill config for all lines infill generation below
-    constexpr double fill_overlap = 0; // raft line shouldn't be expanded - there is no boundary polygon printed
     constexpr int infill_multiplier = 1; // rafts use single lines
     constexpr int extra_infill_shift = 0;
     constexpr bool fill_gaps = true;
@@ -624,6 +623,7 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
         const size_t wall_line_count = base_settings.get<size_t>("raft_base_wall_count");
         const coord_t small_area_width = 0; // A raft never has a small region due to the large horizontal expansion.
         const coord_t line_spacing = base_settings.get<coord_t>("raft_base_line_spacing");
+        const coord_t infill_overlap = base_settings.get<coord_t>("raft_base_infill_overlap_mm");
         const coord_t line_spacing_prime_tower = base_settings.get<coord_t>("prime_tower_raft_base_line_spacing");
         const Point2LL& infill_origin = Point2LL();
         constexpr bool skip_stitching = false;
@@ -668,7 +668,7 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
                 raft_outline_path.outline,
                 gcode_layer.configs_storage_.raft_base_config.getLineWidth(),
                 raft_outline_path.line_spacing,
-                fill_overlap,
+                infill_overlap,
                 infill_multiplier,
                 fill_angle,
                 z,
@@ -754,9 +754,13 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
     const coord_t interface_line_spacing = interface_settings.get<coord_t>("raft_interface_line_spacing");
     const Ratio interface_fan_speed = interface_settings.get<Ratio>("raft_interface_fan_speed");
     const coord_t interface_line_width = interface_settings.get<coord_t>("raft_interface_line_width");
+    const coord_t interface_infill_overlap = interface_settings.get<coord_t>("raft_interface_infill_overlap_mm");
     const coord_t interface_avoid_distance = interface_settings.get<coord_t>("travel_avoid_distance");
     const coord_t interface_max_resolution = interface_settings.get<coord_t>("meshfix_maximum_resolution");
     const coord_t interface_max_deviation = interface_settings.get<coord_t>("meshfix_maximum_deviation");
+    const coord_t raft_interface_z_offset = interface_settings.get<coord_t>("raft_interface_z_offset");
+
+    z += raft_interface_z_offset;
 
     for (LayerIndex raft_interface_layer = 1; static_cast<size_t>(raft_interface_layer) <= num_interface_layers; ++raft_interface_layer)
     { // raft interface layer
@@ -824,7 +828,7 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
             raft_outline_path,
             infill_outline_width,
             interface_line_spacing,
-            fill_overlap,
+            interface_infill_overlap,
             infill_multiplier,
             fill_angle,
             z,
@@ -911,9 +915,13 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
     const coord_t surface_max_resolution = surface_settings.get<coord_t>("meshfix_maximum_resolution");
     const coord_t surface_max_deviation = surface_settings.get<coord_t>("meshfix_maximum_deviation");
     const coord_t surface_line_width = surface_settings.get<coord_t>("raft_surface_line_width");
+    const coord_t surface_infill_overlap = surface_settings.get<coord_t>("raft_surface_infill_overlap_mm");
     const coord_t surface_avoid_distance = surface_settings.get<coord_t>("travel_avoid_distance");
     const Ratio surface_fan_speed = surface_settings.get<Ratio>("raft_surface_fan_speed");
     const bool surface_monotonic = surface_settings.get<bool>("raft_surface_monotonic");
+    const coord_t raft_surface_z_offset = interface_settings.get<coord_t>("raft_surface_z_offset");
+
+    z += raft_surface_z_offset;
 
     for (LayerIndex raft_surface_layer = 1; static_cast<size_t>(raft_surface_layer) <= num_surface_layers; raft_surface_layer++)
     { // raft surface layers
@@ -987,7 +995,7 @@ void FffGcodeWriter::processRaft(const SliceDataStorage& storage)
                 raft_island,
                 infill_outline_width,
                 surface_line_spacing,
-                fill_overlap,
+                surface_infill_overlap,
                 infill_multiplier,
                 fill_angle,
                 z,
@@ -1922,7 +1930,7 @@ bool FffGcodeWriter::processMultiLayerInfill(
 
             constexpr size_t wall_line_count = 0; // wall toolpaths are when gradual infill areas are determined
             const coord_t small_area_width = 0;
-            constexpr coord_t infill_overlap = 0; // Overlap is handled when the wall toolpaths are generated
+            const coord_t infill_overlap = mesh.settings.get<coord_t>("infill_overlap_mm");
             constexpr bool skip_stitching = false;
             constexpr bool connected_zigzags = false;
             constexpr bool use_endpieces = true;
@@ -2203,7 +2211,7 @@ bool FffGcodeWriter::processSingleLayerInfill(
 
         constexpr size_t wall_line_count_here = 0; // Wall toolpaths were generated in generateGradualInfill for the sparsest density, denser parts don't have walls by default
         const coord_t small_area_width = 0;
-        constexpr coord_t overlap = 0; // overlap is already applied for the sparsest density in the generateGradualInfill
+        const coord_t overlap = mesh.settings.get<coord_t>("infill_overlap_mm");
 
         wall_tool_paths.emplace_back();
         Infill infill_comp(
@@ -3406,6 +3414,12 @@ bool FffGcodeWriter::processSupportInfill(const SliceDataStorage& storage, Layer
     const AngleDegrees support_infill_angle = get_support_infill_angle(storage.support, gcode_layer.getLayerNr());
 
     constexpr size_t infill_multiplier = 1; // there is no frontend setting for this (yet)
+    size_t infill_density_multiplier = 1;
+    if (gcode_layer.getLayerNr() <= 0)
+    {
+        infill_density_multiplier = infill_extruder.settings_.get<size_t>("support_infill_density_multiplier_initial_layer");
+    }
+
     const size_t wall_line_count = infill_extruder.settings_.get<size_t>("support_wall_count");
     const coord_t max_resolution = infill_extruder.settings_.get<coord_t>("meshfix_maximum_resolution");
     const coord_t max_deviation = infill_extruder.settings_.get<coord_t>("meshfix_maximum_deviation");
@@ -3531,10 +3545,15 @@ bool FffGcodeWriter::processSupportInfill(const SliceDataStorage& storage, Layer
                 }
 
                 const unsigned int density_factor = 2 << density_idx; // == pow(2, density_idx + 1)
-                int support_line_distance_here
+                coord_t support_line_distance_here
                     = (part.custom_line_distance_ > 0
                            ? part.custom_line_distance_
                            : default_support_line_distance * density_factor); // the highest density infill combines with the next to create a grid with density_factor 1
+                if (support_line_distance_here != 0 && infill_density_multiplier > 1)
+                {
+                    support_line_distance_here /= (1 << (infill_density_multiplier - 1));
+                    support_line_distance_here = std::max(support_line_distance_here, support_line_width);
+                }
                 const int support_shift = support_line_distance_here / 2;
                 if (part.custom_line_distance_ == 0 && (density_idx == max_density_idx || support_pattern == EFillMethod::CROSS || support_pattern == EFillMethod::CROSS_3D))
                 {

src/infill.cpp

@@ -57,17 +57,13 @@ namespace cura
 
 Shape Infill::generateWallToolPaths(
     std::vector<VariableWidthLines>& toolpaths,
-    Shape& outer_contour,
+    const Shape& outer_contour,
     const size_t wall_line_count,
     const coord_t line_width,
-    const coord_t infill_overlap,
     const Settings& settings,
     int layer_idx,
     SectionType section_type)
 {
-    outer_contour = outer_contour.offset(infill_overlap);
-    scripta::log("infill_outer_contour", outer_contour, section_type, layer_idx, scripta::CellVDI{ "infill_overlap", infill_overlap });
-
     Shape inner_contour;
     if (wall_line_count > 0)
     {
@@ -100,9 +96,11 @@ void Infill::generate(
         return;
     }
 
-    inner_contour_ = generateWallToolPaths(toolpaths, outer_contour_, wall_line_count_, infill_line_width_, infill_overlap_, settings, layer_idx, section_type);
+    inner_contour_ = generateWallToolPaths(toolpaths, outer_contour_, wall_line_count_, infill_line_width_, settings, layer_idx, section_type);
     scripta::log("infill_inner_contour_0", inner_contour_, section_type, layer_idx);
 
+    inner_contour_ = inner_contour_.offset(infill_overlap_);
+
     // It does not make sense to print a pattern in a small region. So the infill region
     // is split into a small region that will be filled with walls and the normal region
     // that will be filled with the pattern. This split of regions is not needed if the

src/raft.cpp

@@ -130,12 +130,12 @@ void Raft::generate(SliceDataStorage& storage)
 coord_t Raft::getTotalThickness()
 {
     const Settings& mesh_group_settings = Application::getInstance().current_slice_->scene.current_mesh_group->settings;
-    const ExtruderTrain& base_train = mesh_group_settings.get<ExtruderTrain&>("raft_base_extruder_nr");
-    const ExtruderTrain& interface_train = mesh_group_settings.get<ExtruderTrain&>("raft_interface_extruder_nr");
-    const ExtruderTrain& surface_train = mesh_group_settings.get<ExtruderTrain&>("raft_surface_extruder_nr");
-    return base_train.settings_.get<coord_t>("raft_base_thickness")
-         + interface_train.settings_.get<size_t>("raft_interface_layers") * interface_train.settings_.get<coord_t>("raft_interface_thickness")
-         + surface_train.settings_.get<size_t>("raft_surface_layers") * surface_train.settings_.get<coord_t>("raft_surface_thickness");
+    const Settings& base_train = mesh_group_settings.get<ExtruderTrain&>("raft_base_extruder_nr").settings_;
+    const Settings& interface_train = mesh_group_settings.get<ExtruderTrain&>("raft_interface_extruder_nr").settings_;
+    const Settings& surface_train = mesh_group_settings.get<ExtruderTrain&>("raft_surface_extruder_nr").settings_;
+    return base_train.get<coord_t>("raft_base_thickness") + interface_train.get<size_t>("raft_interface_layers") * interface_train.get<coord_t>("raft_interface_thickness")
+         + interface_train.get<coord_t>("raft_interface_z_offset") + surface_train.get<size_t>("raft_surface_layers") * surface_train.get<coord_t>("raft_surface_thickness")
+         + interface_train.get<coord_t>("raft_surface_z_offset");
 }
 
 coord_t Raft::getZdiffBetweenRaftAndLayer0()

src/settings/PathConfigStorage.cpp

@@ -46,21 +46,21 @@ PathConfigStorage::PathConfigStorage(const SliceDataStorage& storage, const Laye
     , raft_base_config(GCodePathConfig{ .type = PrintFeatureType::SupportInterface,
                                         .line_width = raft_base_train.settings_.get<coord_t>("raft_base_line_width"),
                                         .layer_thickness = raft_base_train.settings_.get<coord_t>("raft_base_thickness"),
-                                        .flow = Ratio(1.0),
+                                        .flow = raft_base_train.settings_.get<Ratio>("raft_base_flow"),
                                         .speed_derivatives = SpeedDerivatives{ .speed = raft_base_train.settings_.get<Velocity>("raft_base_speed"),
                                                                                .acceleration = raft_base_train.settings_.get<Acceleration>("raft_base_acceleration"),
                                                                                .jerk = raft_base_train.settings_.get<Velocity>("raft_base_jerk") } })
     , raft_interface_config(GCodePathConfig{ .type = PrintFeatureType::Support,
                                              .line_width = raft_interface_train.settings_.get<coord_t>("raft_interface_line_width"),
                                              .layer_thickness = raft_interface_train.settings_.get<coord_t>("raft_interface_thickness"),
-                                             .flow = Ratio(1.0),
+                                             .flow = raft_base_train.settings_.get<Ratio>("raft_interface_flow"),
                                              .speed_derivatives = SpeedDerivatives{ .speed = raft_interface_train.settings_.get<Velocity>("raft_interface_speed"),
                                                                                     .acceleration = raft_interface_train.settings_.get<Acceleration>("raft_interface_acceleration"),
                                                                                     .jerk = raft_interface_train.settings_.get<Velocity>("raft_interface_jerk") } })
     , raft_surface_config(GCodePathConfig{ .type = PrintFeatureType::SupportInterface,
                                            .line_width = raft_surface_train.settings_.get<coord_t>("raft_surface_line_width"),
                                            .layer_thickness = raft_surface_train.settings_.get<coord_t>("raft_surface_thickness"),
-                                           .flow = Ratio(1.0),
+                                           .flow = raft_base_train.settings_.get<Ratio>("raft_surface_flow"),
                                            .speed_derivatives = SpeedDerivatives{ .speed = raft_surface_train.settings_.get<Velocity>("raft_surface_speed"),
                                                                                   .acceleration = raft_surface_train.settings_.get<Acceleration>("raft_surface_acceleration"),
                                                                                   .jerk = raft_surface_train.settings_.get<Velocity>("raft_surface_jerk") } })

src/skin.cpp

@@ -470,7 +470,6 @@ void SkinInfillAreaComputation::generateGradualInfill(SliceMeshStorage& mesh)
 
     const auto infill_wall_count = mesh.settings.get<size_t>("infill_wall_line_count");
     const auto infill_wall_width = mesh.settings.get<coord_t>("infill_line_width");
-    const auto infill_overlap = mesh.settings.get<coord_t>("infill_overlap_mm");
     const auto is_connected = mesh.settings.get<bool>("zig_zaggify_infill") || mesh.settings.get<EFillMethod>("infill_pattern") == EFillMethod::ZIG_ZAG;
     for (LayerIndex layer_idx = 0; layer_idx < static_cast<LayerIndex>(mesh.layers.size()); layer_idx++)
     { // loop also over layers which don't contain infill cause of bottom_ and top_layer to initialize their infill_area_per_combine_per_density
@@ -485,7 +484,6 @@ void SkinInfillAreaComputation::generateGradualInfill(SliceMeshStorage& mesh)
                 part.getOwnInfillArea(),
                 infill_wall_count,
                 infill_wall_width,
-                infill_overlap,
                 mesh.settings,
                 layer_idx,
                 SectionType::SKIN);

src/support.cpp

@@ -226,7 +226,6 @@ void AreaSupport::generateGradualSupport(SliceDataStorage& storage)
                 original_area,
                 support_infill_part.inset_count_to_generate_,
                 wall_width,
-                0,
                 infill_extruder.settings_,
                 layer_nr,
                 SectionType::SUPPORT);