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Avoid mesh alteration when converting to CGAL Surface_Mesh

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orient_to_bound_a_volume tends produce incorrect results.
This commit is contained in:
tamasmeszaros 2021-03-03 14:30:05 +01:00
parent 4b9de0398f
commit 6059d89bc8
1 changed files with 7 additions and 24 deletions
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31
src/libslic3r/MeshBoolean.cpp
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@ -111,32 +111,15 @@ struct CGALMesh { _EpicMesh m; };
// /////////////////////////////////////////////////////////////////////////////
template<class _Mesh> void triangle_mesh_to_cgal(const TriangleMesh &M, _Mesh &out)
{
using Index3 = std::array<size_t, 3>;
{
if (M.empty()) return;
std::vector<typename _Mesh::Point> points;
std::vector<Index3> indices;
points.reserve(M.its.vertices.size());
indices.reserve(M.its.indices.size());
for (auto &v : M.its.vertices) points.emplace_back(v.x(), v.y(), v.z());
for (auto &_f : M.its.indices) {
auto f = _f.cast<size_t>();
indices.emplace_back(Index3{f(0), f(1), f(2)});
}
CGALProc::orient_polygon_soup(points, indices);
CGALProc::polygon_soup_to_polygon_mesh(points, indices, out);
// Number the faces because 'orient_to_bound_a_volume' needs a face <--> index map
unsigned index = 0;
for (auto face : out.faces()) face = CGAL::SM_Face_index(index++);
if(CGAL::is_closed(out))
CGALProc::orient_to_bound_a_volume(out);
else
throw Slic3r::RuntimeError("Mesh not watertight");
for (auto &v : M.its.vertices)
out.add_vertex(typename _Mesh::Point{v.x(), v.y(), v.z()});
using VI = typename _Mesh::Vertex_index;
for (auto &f : M.its.indices)
out.add_face(VI(f(0)), VI(f(1)), VI(f(2)));
}
inline Vec3d to_vec3d(const _EpicMesh::Point &v)