Initial work for porting PerimeterGenerator to XS

xs/src/libslic3r/PerimeterGenerator.hpp

@@ -0,0 +1,64 @@
+#ifndef slic3r_PerimeterGenerator_hpp_
+#define slic3r_PerimeterGenerator_hpp_
+
+#include <myinit.h>
+
+namespace Slic3r {
+
+class PerimeterGeneratorLoop;
+
+class PerimeterGeneratorLoop {
+    public:
+    Polygon polygon;
+    bool is_contour;
+    unsigned short depth;
+    std::vector<PerimeterGeneratorLoop> children;
+    
+    PerimeterGeneratorLoop(Polygon polygon, unsigned short depth)
+        : polygon(polygon), depth(depth)
+        {};
+    bool is_external() const;
+    bool is_internal_contour() const;
+};
+
+class PerimeterGenerator {
+    public:
+    SurfaceCollection* slices;
+    SurfaceCollection* lower_slices;
+    double layer_height;
+    int layer_id;
+    Flow perimeter_flow;
+    Flow ext_perimeter_flow;
+    Flow overhang_flow;
+    Flow solid_infill_flow;
+    PrintRegionConfig* config;
+    PrintObjectConfig* object_config;
+    PrintConfig* print_config;
+    double _ext_mm3_per_mm;
+    double _mm3_per_mm;
+    double _mm3_per_mm_overhang;
+    ExtrusionEntityCollection* loops;
+    ExtrusionEntityCollection* gap_fill;
+    SurfaceCollection* fill_surfaces;
+    
+    PerimeterGenerator(SurfaceCollection* slices, double layer_height,
+        ExtrusionEntityCollection* loops, ExtrusionEntityCollection* gap_fill,
+        SurfaceCollection* fill_surfaces)
+        : slices(slices), layer_height(layer_height), layer_id(-1),
+            _ext_mm3_per_mm(-1), _mm3_per_mm(-1), _mm3_per_mm_overhang(-1),
+            loops(loops), gap_fill(gap_fill), fill_surfaces(fill_surfaces)
+        {};
+    void process();
+    
+    private:
+    Polygons _lower_slices_p;
+    
+    ExtrusionEntityCollection _traverse_loops(const std::vector<PerimeterGeneratorLoop> &loops,
+        const Polylines &thin_walls) const;
+    ExtrusionEntityCollection _fill_gaps(double min, double max, double w,
+        const Polygons &gaps) const;
+};
+
+}
+
+#endif