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#ifndef slic3r_PerimeterGenerator_hpp_
#define slic3r_PerimeterGenerator_hpp_
#include "libslic3r.h"
#include <vector>
#include "ExPolygonCollection.hpp"
#include "Flow.hpp"
#include "Polygon.hpp"
#include "PrintConfig.hpp"
#include "SurfaceCollection.hpp"
namespace Slic3r {
// Hierarchy of perimeters.
class PerimeterGeneratorLoop {
public:
// Polygon of this contour.
Polygon polygon;
// Is it a contour or a hole?
// Contours are CCW oriented, holes are CW oriented.
bool is_contour;
// Depth in the hierarchy. External perimeter has depth = 0. An external perimeter could be both a contour and a hole.
unsigned short depth;
// Children contour, may be both CCW and CW oriented (outer contours or holes).
std::vector<PerimeterGeneratorLoop> children;
PerimeterGeneratorLoop(Polygon polygon, unsigned short depth)
: polygon(polygon), is_contour(false), depth(depth)
{};
// External perimeter. It may be CCW or CW oriented (outer contour or hole contour).
bool is_external() const { return this->depth == 0; }
// An island, which may have holes, but it does not have another internal island.
bool is_internal_contour() const;
};
typedef std::vector<PerimeterGeneratorLoop> PerimeterGeneratorLoops;
class PerimeterGenerator {
public:
// Inputs:
const SurfaceCollection* slices;
const ExPolygonCollection* 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;
// Outputs:
ExtrusionEntityCollection* loops;
ExtrusionEntityCollection* gap_fill;
SurfaceCollection* fill_surfaces;
PerimeterGenerator(
// Input:
const SurfaceCollection* slices,
double layer_height,
Flow flow,
PrintRegionConfig* config,
PrintObjectConfig* object_config,
PrintConfig* print_config,
// Output:
// Loops with the external thin walls
ExtrusionEntityCollection* loops,
// Gaps without the thin walls
ExtrusionEntityCollection* gap_fill,
// Infills without the gap fills
SurfaceCollection* fill_surfaces)
: slices(slices), lower_slices(NULL), layer_height(layer_height),
layer_id(-1), perimeter_flow(flow), ext_perimeter_flow(flow),
overhang_flow(flow), solid_infill_flow(flow),
config(config), object_config(object_config), print_config(print_config),
loops(loops), gap_fill(gap_fill), fill_surfaces(fill_surfaces),
_ext_mm3_per_mm(-1), _mm3_per_mm(-1), _mm3_per_mm_overhang(-1)
{};
void process();
private:
double _ext_mm3_per_mm;
double _mm3_per_mm;
double _mm3_per_mm_overhang;
Polygons _lower_slices_p;
ExtrusionEntityCollection _traverse_loops(const PerimeterGeneratorLoops &loops,
ThickPolylines &thin_walls) const;
ExtrusionEntityCollection _variable_width
(const ThickPolylines &polylines, ExtrusionRole role, Flow flow) const;
};
}
#endif
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