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53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
#ifndef CONCAVEHULL_HPP
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#define CONCAVEHULL_HPP
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#include <libslic3r/ExPolygon.hpp>
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namespace Slic3r {
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namespace sla {
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inline Polygons get_contours(const ExPolygons &poly)
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{
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Polygons ret; ret.reserve(poly.size());
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for (const ExPolygon &p : poly) ret.emplace_back(p.contour);
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return ret;
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}
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using ThrowOnCancel = std::function<void()>;
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/// A fake concave hull that is constructed by connecting separate shapes
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/// with explicit bridges. Bridges are generated from each shape's centroid
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/// to the center of the "scene" which is the centroid calculated from the shape
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/// centroids (a star is created...)
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class ConcaveHull {
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Polygons m_polys;
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static Point centroid(const Points& pp);
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static inline Point centroid(const Polygon &poly) { return poly.centroid(); }
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Points calculate_centroids() const;
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void merge_polygons();
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void add_connector_rectangles(const Points ¢roids,
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coord_t max_dist,
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ThrowOnCancel thr);
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public:
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ConcaveHull(const ExPolygons& polys, double merge_dist, ThrowOnCancel thr)
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: ConcaveHull{to_polygons(polys), merge_dist, thr} {}
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ConcaveHull(const Polygons& polys, double mergedist, ThrowOnCancel thr);
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const Polygons & polygons() const { return m_polys; }
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ExPolygons to_expolygons() const;
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};
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ExPolygons offset_waffle_style_ex(const ConcaveHull &ccvhull, coord_t delta);
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Polygons offset_waffle_style(const ConcaveHull &polys, coord_t delta);
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}} // namespace Slic3r::sla
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#endif // CONCAVEHULL_HPP
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