84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
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#include "SlicesToTriangleMesh.hpp"
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#include "libslic3r/TriangulateWall.hpp"
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#include "libslic3r/SLA/Contour3D.hpp"
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#include "libslic3r/ClipperUtils.hpp"
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#include "libslic3r/Tesselate.hpp"
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namespace Slic3r {
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inline sla::Contour3D walls(const Polygon &lower,
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const Polygon &upper,
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double lower_z_mm,
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double upper_z_mm)
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{
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Wall w = triangulate_wall(lower, upper, lower_z_mm, upper_z_mm);
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sla::Contour3D ret;
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ret.points = std::move(w.first);
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ret.faces3 = std::move(w.second);
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return ret;
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}
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// Same as walls() but with identical higher and lower polygons.
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sla::Contour3D inline straight_walls(const Polygon &plate,
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double lo_z,
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double hi_z)
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{
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return walls(plate, plate, lo_z, hi_z);
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}
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sla::Contour3D inline straight_walls(const ExPolygon &plate,
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double lo_z,
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double hi_z)
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{
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sla::Contour3D ret;
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ret.merge(straight_walls(plate.contour, lo_z, hi_z));
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for (auto &h : plate.holes) ret.merge(straight_walls(h, lo_z, hi_z));
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return ret;
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}
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sla::Contour3D inline straight_walls(const ExPolygons &slice,
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double lo_z,
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double hi_z)
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{
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sla::Contour3D ret;
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for (const ExPolygon &poly : slice)
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ret.merge(straight_walls(poly, lo_z, hi_z));
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return ret;
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}
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void slices_to_triangle_mesh(TriangleMesh & mesh,
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const std::vector<ExPolygons> &slices,
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double zmin,
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double lh,
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double ilh)
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{
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sla::Contour3D cntr3d;
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double h = zmin;
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auto it = slices.begin(), xt = std::next(it);
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cntr3d.merge(triangulate_expolygons_3d(*it, h, NORMALS_DOWN));
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cntr3d.merge(straight_walls(*it, h, h + ilh));
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h += ilh;
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while (xt != slices.end()) {
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ExPolygons dff1 = diff_ex(*it, *xt);
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ExPolygons dff2 = diff_ex(*xt, *it);
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cntr3d.merge(triangulate_expolygons_3d(dff1, h, NORMALS_UP));
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cntr3d.merge(triangulate_expolygons_3d(dff2, h, NORMALS_UP));
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cntr3d.merge(straight_walls(*xt, h, h + lh));
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h += lh;
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++it; ++xt;
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}
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cntr3d.merge(triangulate_expolygons_3d(*it, h, NORMALS_UP));
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mesh.merge(sla::to_triangle_mesh(cntr3d));
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mesh.require_shared_vertices();
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}
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} // namespace Slic3r
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