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Fixed the propagation of painted top and bottom layers for mirrored objects in multi-material segmentation.

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This commit is contained in:
Lukáš Hejl 2021-10-25 08:43:30 +02:00
parent 0f9a9de745
commit 10f24119d0
1 changed files with 2 additions and 1 deletions
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3
src/libslic3r/TriangleMeshSlicer.cpp
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@ -1919,6 +1919,7 @@ void slice_mesh_slabs(
#endif // EXPENSIVE_DEBUG_CHECKS
std::vector<stl_vertex> vertices_transformed = transform_mesh_vertices_for_slicing(mesh, trafo);
const bool mirrored = trafo.matrix().determinant() < 0;
std::vector<FaceOrientation> face_orientation(mesh.indices.size(), FaceOrientation::Up);
for (const stl_triangle_vertex_indices &tri : mesh.indices) {
@ -1929,7 +1930,7 @@ void slice_mesh_slabs(
const Point a = to_2d(fa).cast<coord_t>();
const Point b = to_2d(fb).cast<coord_t>();
const Point c = to_2d(fc).cast<coord_t>();
const int64_t d = cross2((b - a).cast<int64_t>(), (c - b).cast<int64_t>());
const int64_t d = cross2((b - a).cast<int64_t>(), (c - b).cast<int64_t>()) * (mirrored ? -1 : 1);
FaceOrientation fo = FaceOrientation::Vertical;
if (d > 0)
fo = FaceOrientation::Up;