Merge of https://github.com/prusa3d/PrusaSlicer/pull/2856

Add aligned rectilinear infill functionality by @m-schubert
Implements [Feature Request] Aligned rectilinear infill #1938

src/libslic3r/Fill/FillBase.cpp

@@ -29,6 +29,7 @@ Fill* Fill::new_from_type(const InfillPattern type)
     case ip3DHoneycomb:         return new Fill3DHoneycomb();
     case ipGyroid:              return new FillGyroid();
     case ipRectilinear:         return new FillRectilinear();
+    case ipAlignedRectilinear:  return new FillAlignedRectilinear();
     case ipMonotonic:           return new FillMonotonic();
     case ipLine:                return new FillLine();
     case ipGrid:                return new FillGrid();

src/libslic3r/Fill/FillRectilinear.hpp

@@ -29,6 +29,17 @@ protected:
     bool fill_surface_by_multilines(const Surface *surface, FillParams params, const std::initializer_list<SweepParams> &sweep_params, Polylines &polylines_out);
 };
 
+class FillAlignedRectilinear : public FillRectilinear
+{
+public:
+    Fill* clone() const override { return new FillAlignedRectilinear(*this); };
+    ~FillAlignedRectilinear() override = default;
+
+protected:
+    // Always generate infill at the same angle.
+    virtual float _layer_angle(size_t idx) const { return 0.f; }
+};
+
 class FillMonotonic : public FillRectilinear
 {
 public:

src/libslic3r/PrintConfig.cpp

@@ -460,12 +460,14 @@ void PrintConfigDef::init_fff_params()
     def->enum_keys_map = &ConfigOptionEnum<InfillPattern>::get_enum_values();
     def->enum_values.push_back("rectilinear");
     def->enum_values.push_back("monotonic");
+    def->enum_values.push_back("alignedrectilinear");
     def->enum_values.push_back("concentric");
     def->enum_values.push_back("hilbertcurve");
     def->enum_values.push_back("archimedeanchords");
     def->enum_values.push_back("octagramspiral");
     def->enum_labels.push_back(L("Rectilinear"));
     def->enum_labels.push_back(L("Monotonic"));
+    def->enum_labels.push_back(L("Aligned Rectilinear"));
     def->enum_labels.push_back(L("Concentric"));
     def->enum_labels.push_back(L("Hilbert Curve"));
     def->enum_labels.push_back(L("Archimedean Chords"));
@@ -881,6 +883,7 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("Fill pattern for general low-density infill.");
     def->enum_keys_map = &ConfigOptionEnum<InfillPattern>::get_enum_values();
     def->enum_values.push_back("rectilinear");
+    def->enum_values.push_back("alignedrectilinear");
     def->enum_values.push_back("grid");
     def->enum_values.push_back("triangles");
     def->enum_values.push_back("stars");
@@ -896,6 +899,7 @@ void PrintConfigDef::init_fff_params()
     def->enum_values.push_back("adaptivecubic");
     def->enum_values.push_back("supportcubic");
     def->enum_labels.push_back(L("Rectilinear"));
+    def->enum_labels.push_back(L("Aligned Rectilinear"));
     def->enum_labels.push_back(L("Grid"));
     def->enum_labels.push_back(L("Triangles"));
     def->enum_labels.push_back(L("Stars"));

src/libslic3r/PrintConfig.hpp

@@ -44,7 +44,7 @@ enum AuthorizationType {
 };
 
 enum InfillPattern : int {
-    ipRectilinear, ipMonotonic, ipGrid, ipTriangles, ipStars, ipCubic, ipLine, ipConcentric, ipHoneycomb, ip3DHoneycomb,
+    ipRectilinear, ipMonotonic, ipAlignedRectilinear, ipGrid, ipTriangles, ipStars, ipCubic, ipLine, ipConcentric, ipHoneycomb, ip3DHoneycomb,
     ipGyroid, ipHilbertCurve, ipArchimedeanChords, ipOctagramSpiral, ipAdaptiveCubic, ipSupportCubic, ipCount,
 };
 
@@ -145,6 +145,7 @@ template<> inline const t_config_enum_values& ConfigOptionEnum<InfillPattern>::g
     if (keys_map.empty()) {
         keys_map["rectilinear"]         = ipRectilinear;
         keys_map["monotonic"]           = ipMonotonic;
+        keys_map["alignedrectilinear"]  = ipAlignedRectilinear;
         keys_map["grid"]                = ipGrid;
         keys_map["triangles"]           = ipTriangles;
         keys_map["stars"]               = ipStars;