47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
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#ifndef slic3r_Geometry_MedialAxis_hpp_
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#define slic3r_Geometry_MedialAxis_hpp_
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#include "Voronoi.hpp"
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#include "../ExPolygon.hpp"
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namespace Slic3r::Geometry {
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class MedialAxis {
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public:
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MedialAxis(double min_width, double max_width, const ExPolygon &expolygon);
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void build(ThickPolylines* polylines);
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void build(Polylines* polylines);
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private:
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// Input
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const ExPolygon &m_expolygon;
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Lines m_lines;
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// for filtering of the skeleton edges
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double m_min_width;
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double m_max_width;
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// Voronoi Diagram.
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using VD = VoronoiDiagram;
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VD m_vd;
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// Annotations of the VD skeleton edges.
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struct EdgeData {
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bool active { false };
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double width_start { 0 };
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double width_end { 0 };
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};
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// Returns a reference to EdgeData and a "reversed" boolean.
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std::pair<EdgeData&, bool> edge_data(const VD::edge_type &edge) {
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size_t edge_id = &edge - &m_vd.edges().front();
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return { m_edge_data[edge_id / 2], (edge_id & 1) != 0 };
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}
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std::vector<EdgeData> m_edge_data;
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void process_edge_neighbors(const VD::edge_type* edge, ThickPolyline* polyline);
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bool validate_edge(const VD::edge_type* edge);
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};
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} // namespace Slicer::Geometry
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#endif // slic3r_Geometry_MedialAxis_hpp_
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