ENH: auto arranging won't put more than 1 TPU filament on the same plate

jira: none
Change-Id: I0ac0968ac56f9969f94b73cfacaac3a97a814b2d

src/libnest2d/include/libnest2d/nester.hpp

@@ -76,7 +76,8 @@ class _Item {
 public:
     int itemid_{ 0 };
     std::vector<int> extrude_ids;
-    int filament_temp_type = -1; // -1 means unset. otherwise should be {0,1,2}
+    std::vector<std::string> filament_types{};        /// filament type for different material judge
+    int filament_temp_type = -1; // -1 means unset. otherwise should be one of FilamentTempType ie {0,1,2}
     double height{ 0 };
     double print_temp{ 0 };
     double bed_temp{ 0 };

src/libslic3r/Arrange.cpp

@@ -549,14 +549,23 @@ protected:
         }
 
         std::set<int> extruder_ids;
+        std::set<int> tpu_extruder_ids;
         for (int i = 0; i < m_items.size(); i++) {
             Item& p = m_items[i];
             if (p.is_virt_object) continue;
             extruder_ids.insert(p.extrude_ids.begin(),p.extrude_ids.end());
+            for (int j = 0; j < p.extrude_ids.size(); j++) {
+                if (p.filament_types[j] == "TPU") tpu_extruder_ids.insert(p.extrude_ids[j]);
+            }
+        }
+        for (int j = 0; j < item.extrude_ids.size(); j++) {
+            if (item.filament_types[j] == "TPU") tpu_extruder_ids.insert(item.extrude_ids[j]);
         }
 
+        // do not allow more than 1 TPU extruder on same plate
+        if (tpu_extruder_ids.size() > 1) score += LARGE_COST_TO_REJECT;
         // add a large cost if not multi materials on same plate is not allowed
-        if (!params.allow_multi_materials_on_same_plate) {
+        else if (!params.allow_multi_materials_on_same_plate) {
             // it's the first object, which can be multi-color
             bool first_object                 = extruder_ids.empty();
             // the two objects (previously packed items and the current item) are considered having same color if either one's colors are a subset of the other
@@ -984,6 +993,7 @@ static void process_arrangeable(const ArrangePolygon &arrpoly,
     item.priority(arrpoly.priority);
     item.itemId(arrpoly.itemid);
     item.extrude_ids = arrpoly.extrude_ids;
+    item.filament_types = arrpoly.filament_types;
     item.height = arrpoly.height;
     item.name = arrpoly.name;
     //BBS: add virtual object logic

src/libslic3r/Arrange.hpp

@@ -62,6 +62,7 @@ struct ArrangePolygon {
     int       row{0};
     int       col{0};
     std::vector<int> extrude_ids{};      /// extruder_id for least extruder switch
+    std::vector<std::string> filament_types{}; /// filament type for different material judge
     int filament_temp_type{ -1 };
     int       bed_temp{0};         ///bed temperature for different material judge
     int       print_temp{0};      ///print temperature for different material judge

src/libslic3r/Model.cpp

@@ -3952,6 +3952,11 @@ void ModelInstance::get_arrange_polygon(void *ap, const Slic3r::DynamicPrintConf
 //    static const double SIMPLIFY_TOLERANCE_MM = 0.1;
 
     Geometry::Transformation trafo_instance = get_transformation();
+
+    //BOOST_LOG_TRIVIAL(debug) << "get_arrange_polygon: " << object->name << " instance trans:\n"
+    //                         << trafo_instance.get_matrix().matrix() << "\n object trans:\n"
+    //                         << object->volumes.front()->get_transformation().get_matrix().matrix();
+
     trafo_instance.set_offset(Vec3d(0, 0, get_offset(Z)));
 
     Polygon p = get_object()->convex_hull_2d(trafo_instance.get_matrix());

src/libslic3r/Utils.hpp

@@ -668,6 +668,25 @@ inline std::string filter_characters(const std::string& str, const std::string&
     return filteredStr;
 }
 
+// custom vector wrapper for outputting to log
+template<typename T> struct VectorFormatter
+{
+    const std::vector<T> &vec;
+
+    explicit VectorFormatter(const std::vector<T> &v) : vec(v) {}
+
+    friend std::ostream &operator<<(std::ostream &os, const VectorFormatter<T> &vf)
+    {
+        os << "[";
+        for (size_t i = 0; i < vf.vec.size(); ++i) {
+            os << vf.vec[i];
+            if (i != vf.vec.size() - 1) { os << ", "; }
+        }
+        os << "]";
+        return os;
+    }
+};
+
 } // namespace Slic3r
 
 #if WIN32

src/slic3r/GUI/Jobs/ArrangeJob.cpp

@@ -100,8 +100,30 @@ void ArrangeJob::clear_input()
 ArrangePolygon ArrangeJob::prepare_arrange_polygon(void* model_instance)
 {
     ModelInstance* instance = (ModelInstance*)model_instance;
-    const Slic3r::DynamicPrintConfig& config = wxGetApp().preset_bundle->full_config();
+    auto preset_bundle = wxGetApp().preset_bundle;
-    return get_instance_arrange_poly(instance, config);
+    const Slic3r::DynamicPrintConfig& config = preset_bundle->full_config();
+    ArrangePolygon ap = get_instance_arrange_poly(instance, config);
+
+    // get filament types such as PLA, ABS, etc.
+    ap.filament_types.clear();
+    for (size_t i = 0; i < preset_bundle->filament_presets.size(); ++i) {
+        auto iter = std::find(ap.extrude_ids.begin(), ap.extrude_ids.end(), i + 1);
+        if (iter == ap.extrude_ids.end()) continue;
+
+        std::string filament_name = preset_bundle->filament_presets[i];
+        for (int f_index = 0; f_index < preset_bundle->filaments.size(); f_index++) {
+            PresetCollection *filament_presets = &preset_bundle->filaments;
+            Preset           *preset           = &filament_presets->preset(f_index);
+            int               size             = preset_bundle->filaments.size();
+            if (preset && filament_name.compare(preset->name) == 0) {
+                std::string display_filament_type;
+                std::string filament_type = preset->config.get_filament_type(display_filament_type);
+                ap.filament_types.push_back(filament_type);
+            }
+        }
+    }
+
+    return ap;
 }
 
 void ArrangeJob::prepare_selected() {
@@ -633,7 +655,8 @@ void ArrangeJob::process()
         BOOST_LOG_TRIVIAL(warning)<< "Arrange full params: "<< params.to_json();
         BOOST_LOG_TRIVIAL(info) << boost::format("arrange: items selected before arranging: %1%") % m_selected.size();
         for (auto selected : m_selected) {
-            BOOST_LOG_TRIVIAL(debug) << selected.name << ", extruder: " << selected.extrude_ids.back() << ", bed: " << selected.bed_idx
+            BOOST_LOG_TRIVIAL(debug) << selected.name << ", extruder: " << VectorFormatter( selected.extrude_ids)
+                                     << ", filament types: " << VectorFormatter(selected.filament_types) << ", bed: " << selected.bed_idx
                                      << ", filemant_type:" << selected.filament_temp_type << ", trans: " << selected.translation.transpose()
                                      << ", rotation: " << selected.rotation;
         }