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EigenMesh3D does not store a copy of the mesh

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Instead, it stores a pointer to extern TriangleMesh (which must not be destroyed before the EigenMesh3D object)
This commit is contained in:
Lukas Matena 2020-05-23 13:54:41 +02:00
parent 1f833921a2
commit 55395e046f
4 changed files with 51 additions and 19 deletions
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44
src/libslic3r/SLA/Common.cpp
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@ -227,7 +227,7 @@ public:
static const constexpr double MESH_EPS = 1e-6;
EigenMesh3D::EigenMesh3D(const TriangleMesh& tmesh)
: m_aabb(new AABBImpl()), m_tm(tmesh)
: m_aabb(new AABBImpl()), m_tm(&tmesh)
{
auto&& bb = tmesh.bounding_box();
m_ground_level += bb.min(Z);
@ -254,6 +254,42 @@ EigenMesh3D &EigenMesh3D::operator=(EigenMesh3D &&other) = default;
EigenMesh3D::EigenMesh3D(EigenMesh3D &&other) = default;
const std::vector<Vec3f>& EigenMesh3D::vertices() const
{
return m_tm->its.vertices;
}
const std::vector<Vec3i>& EigenMesh3D::indices() const
{
return m_tm->its.indices;
}
const Vec3f& EigenMesh3D::vertices(size_t idx) const
{
return m_tm->its.vertices[idx];
}
const Vec3i& EigenMesh3D::indices(size_t idx) const
{
return m_tm->its.indices[idx];
}
Vec3d EigenMesh3D::normal_by_face_id(int face_id) const {
return m_tm->stl.facet_start[face_id].normal.cast<double>();
}
EigenMesh3D::hit_result
EigenMesh3D::query_ray_hit(const Vec3d &s, const Vec3d &dir) const
{
@ -270,7 +306,7 @@ EigenMesh3D::query_ray_hit(const Vec3d &s, const Vec3d &dir) const
}
#endif
m_aabb->intersect_ray(m_tm, s, dir, hit);
m_aabb->intersect_ray(*m_tm, s, dir, hit);
hit_result ret(*this);
ret.m_t = double(hit.t);
ret.m_dir = dir;
@ -288,7 +324,7 @@ EigenMesh3D::query_ray_hits(const Vec3d &s, const Vec3d &dir) const
{
std::vector<EigenMesh3D::hit_result> outs;
std::vector<igl::Hit> hits;
m_aabb->intersect_ray(m_tm, s, dir, hits);
m_aabb->intersect_ray(*m_tm, s, dir, hits);
// The sort is necessary, the hits are not always sorted.
std::sort(hits.begin(), hits.end(),
@ -420,7 +456,7 @@ double EigenMesh3D::squared_distance(const Vec3d &p, int& i, Vec3d& c) const {
double sqdst = 0;
Eigen::Matrix<double, 1, 3> pp = p;
Eigen::Matrix<double, 1, 3> cc;
sqdst = m_aabb->squared_distance(m_tm, pp, i, cc);
sqdst = m_aabb->squared_distance(*m_tm, pp, i, cc);
c = cc;
return sqdst;
}