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Fix potential crashes in SLA normal calculation routine

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This commit is contained in:
tamasmeszaros 2022-09-08 11:50:58 +02:00
parent 5ecacdc66c
commit 9ef826cb5f
2 changed files with 6 additions and 3 deletions
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4
src/libslic3r/MeshNormals.cpp
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@ -24,6 +24,7 @@ Vec3d get_normal(const AABBMesh &mesh,
Vec3d p;
mesh.squared_distance(picking_point, faceid, p);
assert(int(faceid) < int(mesh.get_triangle_mesh()->indices.size()));
auto trindex = mesh.indices(faceid);
@ -89,10 +90,11 @@ Vec3d get_normal(const AABBMesh &mesh,
}
} else if (edge_idx >= 0) { // the point is on and edge
size_t neighbor_face = mesh.face_neighbor_index()[faceid](edge_idx);
if (neighbor_face < mesh.indices().size()) {
neigh.emplace_back(mesh.normal_by_face_id(faceid));
neigh.emplace_back(mesh.normal_by_face_id(neighbor_face));
}
}
if (!neigh.empty()) { // there were neighbors to count with
// sum up the normals and then normalize the result again.

1
src/libslic3r/SLA/SupportTreeUtils.hpp
View File

@ -517,6 +517,7 @@ bool optimize_pinhead_placement(Ex policy,
Head &head)
{
Vec3d n = get_normal(m.emesh, head.pos);
assert(std::abs(n.norm() - 1.0) < EPSILON);
// for all normals the spherical coordinates are generated and
// the polar angle is saturated to 45 degrees from the bottom then