ENH: Add gcode check for multi_extruder

jira: none
Change-Id: Iebc43e608c4509eb62b280af2d401fa9e0e089ba
(cherry picked from commit c75c10e312b8d0bd5404d92db88c95a9e6186bc1)

src/libslic3r/GCode.cpp

@@ -1627,6 +1627,19 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
                 break;
         }
     }
+    // check gcode is valid in multi_extruder printabele area
+    int extruder_size = m_print->config().nozzle_diameter.values.size();
+    if (extruder_size > 1) {
+        std::vector<Vec2d> printable_area = m_print->get_printable_area();
+        Polygon printable_poly = Polygon::new_scale(printable_area);
+        std::vector<std::vector<Vec2d>> extruder_printable_areas = m_print->get_extruder_printable_area();
+        std::vector<Polygons>      extruder_unprintable_polys;
+        for (const auto &e_printable_area : extruder_printable_areas) {
+            Polygons ploys = diff(printable_poly, Polygon::new_scale(e_printable_area));
+            extruder_unprintable_polys.emplace_back(ploys);
+        }
+        m_processor.check_multi_extruder_gcode_valid(extruder_unprintable_polys, m_print->get_filament_maps());
+    }
 
     m_processor.finalize(true);
 //    DoExport::update_print_estimated_times_stats(m_processor, print->m_print_statistics);

src/libslic3r/GCode/GCodeProcessor.cpp

@@ -698,6 +698,59 @@ GCodeProcessor::GCodeProcessor()
     m_time_processor.machines[static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Stealth)].line_m73_stop_mask = "M73 D%s\n";
 }
 
+bool GCodeProcessor::check_multi_extruder_gcode_valid(const std::vector<Polygons> &unprintable_areas, const std::vector<int> &filament_map)
+{
+    m_result.gcode_check_result.reset();
+
+    auto to_2d = [](const Vec3d &pos) -> Point {
+        Point ps(scale_(pos.x()), scale_(pos.y()));
+        return ps;
+    };
+
+    std::map<int, Points> gcode_path_pos;
+    for (const GCodeProcessorResult::MoveVertex &move : m_result.moves) {
+        if (move.type == EMoveType::Extrude/* || move.type == EMoveType::Travel*/) {
+            if (move.is_arc_move_with_interpolation_points()) {
+                for (int i = 0; i < move.interpolation_points.size(); i++) {
+                    gcode_path_pos[int(move.extruder_id)].emplace_back(to_2d(move.interpolation_points[i].cast<double>()));
+                }
+            }
+            else {
+                gcode_path_pos[int(move.extruder_id)].emplace_back(to_2d(move.position.cast<double>()));
+            }
+        }
+    }
+
+    bool valid = true;
+    for (auto iter = gcode_path_pos.begin(); iter != gcode_path_pos.end(); ++iter) {
+        int extruder_id = filament_map[iter->first] - 1;
+        Polygon path_poly(iter->second);
+        BoundingBox bbox = path_poly.bounding_box();
+
+        // Simplified use bounding_box, Accurate calculation is not efficient
+        for (const Polygon &poly : unprintable_areas[extruder_id]) {
+            if (poly.bounding_box().overlap(bbox)) {
+                m_result.gcode_check_result.error_code = 1;
+                m_result.gcode_check_result.error_infos[extruder_id].push_back(iter->first);
+                valid = false;
+            }
+        }
+
+        /*
+        // Accurate calculation is not efficient
+        for (const Polygon& poly : unprintable_areas[extruder_id]) {
+            if (poly.overlaps({path_poly})) {
+                m_result.gcode_check_result.error_code = 1;
+                valid = false;
+                break;
+            }
+        }
+        */
+    }
+
+    return valid;
+}
+
 void GCodeProcessor::apply_config(const PrintConfig& config)
 {
     m_parser.apply_config(config);

src/libslic3r/GCode/GCodeProcessor.hpp

@@ -133,9 +133,21 @@ class Print;
 
     using ConflictResultOpt = std::optional<ConflictResult>;
 
+    struct GCodeCheckResult
+    {
+        int error_code = 0;   // 0 means succeed
+        std::map<int, std::vector<int>> error_infos;   // extruder_id to filament_ids
+
+        void reset() {
+            error_code = 0;
+            error_infos.clear();
+        }
+    };
+
     struct GCodeProcessorResult
     {
         ConflictResultOpt conflict_result;
+        GCodeCheckResult  gcode_check_result;
         BedMatchResult  bed_match_result;
 
         struct SettingsIds
@@ -260,6 +272,7 @@ class Print;
             spiral_vase_layers = other.spiral_vase_layers;
             warnings = other.warnings;
             bed_type = other.bed_type;
+            gcode_check_result = other.gcode_check_result;
             bed_match_result = other.bed_match_result;
 #if ENABLE_GCODE_VIEWER_STATISTICS
             time = other.time;
@@ -776,6 +789,8 @@ class Print;
     public:
         GCodeProcessor();
 
+        // check whether the gcode path meets the filament_map grouping requirements
+        bool check_multi_extruder_gcode_valid(const std::vector<Polygons> &unprintable_areas, const std::vector<int>& filament_map);
         void apply_config(const PrintConfig& config);
         void set_print(Print* print) { m_print = print; }
         void enable_stealth_time_estimator(bool enabled);

src/libslic3r/Print.cpp

@@ -2651,6 +2651,16 @@ FilamentMapMode Print::get_filament_map_mode() const
     return m_config.filament_map_mode;
 }
 
+std::vector<Vec2d> Print::get_printable_area()
+{
+    return m_config.printable_area.values;
+}
+
+std::vector<std::vector<Vec2d>> Print::get_extruder_printable_area()
+{
+    return m_config.extruder_printable_area.values;
+}
+
 size_t Print::get_extruder_id(unsigned int filament_id) const
 {
     std::vector<int> filament_map = get_filament_maps();

src/libslic3r/Print.hpp

@@ -956,7 +956,6 @@ public:
     // get the group label of filament
     size_t get_extruder_id(unsigned int filament_id) const;
 
-    // 1 based ids
     const std::vector<std::vector<int>>& get_unprintable_filament_ids() const { return m_unprintable_filament_ids; }
     void set_unprintable_filament_ids(const std::vector<std::vector<int>> &filament_ids) { m_unprintable_filament_ids = filament_ids; }
 
@@ -1099,6 +1098,8 @@ private:
     FakeWipeTower     m_fake_wipe_tower;
     bool              m_has_auto_filament_map_result{false};
     
+    std::vector<std::vector<int>> m_unprintable_filament_ids;
+
     //SoftFever: calibration
     Calib_Params m_calib_params;
 

src/slic3r/GUI/3DScene.cpp

@@ -1078,6 +1078,7 @@ bool GLVolumeCollection::check_outside_state(const BuildVolume &build_volume, Mo
     BuildVolume plate_build_volume(pp_bed_shape, build_volume.printable_height(), build_volume.extruder_areas());
     const std::vector<BoundingBoxf3>& exclude_areas = curr_plate->get_exclude_areas();
 
+    curr_plate->clear_unprintable_filament_ids();
     for (GLVolume* volume : this->volumes)
     {
         if (! volume->is_modifier && (volume->shader_outside_printer_detection_enabled || (! volume->is_wipe_tower && volume->composite_id.volume_id >= 0))) {
@@ -1094,6 +1095,17 @@ bool GLVolumeCollection::check_outside_state(const BuildVolume &build_volume, Mo
                     {
                         std::vector<bool> inside_extruders;
                         state = plate_build_volume.check_volume_bbox_state_with_extruder_areas(bb, inside_extruders);
+                        if (state == BuildVolume::ObjectState::Limited) {
+                            const ModelObjectPtrs &model_objects = model.objects;
+                            ModelObject *model_object = model_objects[volume->object_idx()];
+                            ModelVolume *model_volume = model_object->volumes[volume->volume_idx()];
+                            for (size_t i = 0; i < inside_extruders.size(); ++i) {
+                                if (!inside_extruders[i]) {
+                                    std::vector<int> extruders = model_volume->get_extruders();
+                                    curr_plate->append_unprintable_filament_ids(i, extruders);
+                                }
+                            }
+                        }
                     }
                     break;
                 }

src/slic3r/GUI/GCodeViewer.cpp

@@ -1094,6 +1094,8 @@ void GCodeViewer::load(const GCodeProcessorResult& gcode_result, const Print& pr
     m_conflict_result = gcode_result.conflict_result;
     if (m_conflict_result) { m_conflict_result.value().layer = m_layers.get_l_at(m_conflict_result.value()._height); }
 
+    m_gcode_check_result = gcode_result.gcode_check_result;
+
     //BBS: add mutex for protection of gcode result
     gcode_result.unlock();
     //BBS: add logs

src/slic3r/GUI/GCodeViewer.hpp

@@ -736,6 +736,7 @@ public:
 
     //BBS
     ConflictResultOpt m_conflict_result;
+    GCodeCheckResult  m_gcode_check_result;
 private:
     std::vector<int> m_plater_extruder;
     bool m_gl_data_initialized{ false };

src/slic3r/GUI/GLCanvas3D.cpp

@@ -2906,6 +2906,7 @@ void GLCanvas3D::load_gcode_preview(const GCodeProcessorResult& gcode_result, co
         _set_warning_notification_if_needed(EWarning::ToolHeightOutside);
         _set_warning_notification_if_needed(EWarning::ToolpathOutside);
         _set_warning_notification_if_needed(EWarning::GCodeConflict);
+        _set_warning_notification_if_needed(EWarning::MultiExtruderPrintableError);
     }
 
     m_gcode_viewer.refresh(gcode_result, str_tool_colors);
@@ -9646,6 +9647,8 @@ void GLCanvas3D::_set_warning_notification_if_needed(EWarning warning)
                 }
                 else if (warning == EWarning::GCodeConflict)
                     show = m_gcode_viewer.has_data() && m_gcode_viewer.is_contained_in_bed() && m_gcode_viewer.m_conflict_result.has_value();
+                else if (warning == EWarning::MultiExtruderPrintableError)
+                    show = m_gcode_viewer.has_data() && m_gcode_viewer.m_gcode_check_result.error_code != 0;
             }
         }
     }
@@ -9690,6 +9693,25 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
     case EWarning::ObjectOutside:      text = _u8L("An object is laid over the plate boundaries."); break;
     case EWarning::ToolHeightOutside:  text = _u8L("A G-code path goes beyond the max print height."); error = ErrorType::SLICING_ERROR; break;
     case EWarning::ToolpathOutside:    text = _u8L("A G-code path goes beyond the plate boundaries."); error = ErrorType::SLICING_ERROR; break;
+    case EWarning::MultiExtruderPrintableError: {
+        text.clear();
+        for (auto error_iter = m_gcode_viewer.m_gcode_check_result.error_infos.begin(); error_iter != m_gcode_viewer.m_gcode_check_result.error_infos.end(); ++error_iter) {
+            if (error_iter != m_gcode_viewer.m_gcode_check_result.error_infos.begin()) {
+                text += "\n";
+            }
+            int extruder_id = error_iter->first + 1;
+            std::string filaments;
+            for (size_t i = 0; i < error_iter->second.size(); ++i) {
+                if (i > 0) {
+                    filaments += ", ";
+                }
+                filaments += std::to_string(error_iter->second[i] + 1);
+            }
+            text += (boost::format(_u8L("Extruder %d conflicts with filaments: %s.")) %extruder_id %filaments).str();
+        }
+        error = ErrorType::SLICING_ERROR;
+        break;
+    }
     // BBS: remove _u8L() for SLA
     case EWarning::SlaSupportsOutside: text = ("SLA supports outside the print area were detected."); error = ErrorType::PLATER_ERROR; break;
     case EWarning::SomethingNotShown:  text = _u8L("Only the object being edited is visible."); break;

src/slic3r/GUI/GLCanvas3D.hpp

@@ -382,7 +382,8 @@ class GLCanvas3D
         ObjectClashed,
         ObjectLimited,
         GCodeConflict,
-        ToolHeightOutside
+        ToolHeightOutside,
+        MultiExtruderPrintableError,      // after slice
     };
 
     class RenderStats

src/slic3r/GUI/PartPlate.cpp

@@ -2898,6 +2898,7 @@ void PartPlate::update_slice_context(BackgroundSlicingProcess & process)
 	process.select_technology(this->printer_technology);
 	process.set_current_plate(this);
 	m_print->set_status_callback(statuscb);
+    m_print->set_unprintable_filament_ids(m_unprintable_filament_ids);
 	process.switch_print_preprocess();
 
 	return;
@@ -3223,6 +3224,14 @@ std::vector<int> PartPlate::get_filament_maps()
     return filament_maps;
 }
 
+void PartPlate::append_unprintable_filament_ids(int extruder_id, const std::vector<int> &filament_ids)
+{
+    if (extruder_id > m_unprintable_filament_ids.size()) {
+        m_unprintable_filament_ids.resize(extruder_id + 1);
+    }
+    m_unprintable_filament_ids[extruder_id].insert(m_unprintable_filament_ids[extruder_id].end(), filament_ids.begin(), filament_ids.end());
+}
+
 void PartPlate::set_filament_maps(const std::vector<int>& f_maps)
 {
     std::vector<int>& filament_maps = m_config.option<ConfigOptionInts>("filament_map", true)->values;

src/slic3r/GUI/PartPlate.hpp

@@ -112,6 +112,9 @@ private:
     std::vector<FilamentInfo> slice_filaments_info;
     int m_print_index;
 
+    // filament ids of extruder
+    std::vector<std::vector<int>> m_unprintable_filament_ids;
+
     std::string m_tmp_gcode_path;       //use a temp path to store the gcode
     std::string m_temp_config_3mf_path; //use a temp path to store the config 3mf
     std::string m_gcode_path_from_3mf;  //use a path to store the gcode loaded from 3mf
@@ -497,6 +500,11 @@ public:
     std::vector<int> get_filament_maps();
     void set_filament_maps(const std::vector<int>& f_maps);
 
+    const std::vector<std::vector<int>> &get_unprintable_filament_ids() const { return m_unprintable_filament_ids; }
+    void set_unprintable_filament_ids(const std::vector<std::vector<int>> &filament_ids) { m_unprintable_filament_ids = filament_ids; }
+    void clear_unprintable_filament_ids() { m_unprintable_filament_ids.clear(); }
+    void append_unprintable_filament_ids(int extruder_id, const std::vector<int> &filament_ids);
+
     void on_extruder_count_changed(int extruder_count);
     void set_filament_count(int filament_count);
     void on_filament_added();