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FDM supports gizmo: caching triangle normals in order to increase performance

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This commit is contained in:
Lukas Matena 2020-05-15 14:16:56 +02:00
parent e2ccc6ec0c
commit e312f3be43
3 changed files with 16 additions and 14 deletions
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15
src/slic3r/GUI/MeshUtils.cpp
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@ -95,11 +95,9 @@ void MeshClipper::recalculate_triangles()
}
Vec3f MeshRaycaster::get_triangle_normal(const indexed_triangle_set& its, size_t facet_idx)
Vec3f MeshRaycaster::get_triangle_normal(size_t facet_idx) const
{
Vec3f a(its.vertices[its.indices[facet_idx](1)] - its.vertices[its.indices[facet_idx](0)]);
Vec3f b(its.vertices[its.indices[facet_idx](2)] - its.vertices[its.indices[facet_idx](0)]);
return Vec3f(a.cross(b)).normalized();
return m_normals[facet_idx];
}
void MeshRaycaster::line_from_mouse_pos(const Vec2d& mouse_pos, const Transform3d& trafo, const Camera& camera,
@ -218,12 +216,9 @@ Vec3f MeshRaycaster::get_closest_point(const Vec3f& point, Vec3f* normal) const
int idx = 0;
Vec3d closest_point;
m_emesh.squared_distance(point.cast<double>(), idx, closest_point);
if (normal) {
auto indices = m_emesh.F().row(idx);
Vec3d a(m_emesh.V().row(indices(1)) - m_emesh.V().row(indices(0)));
Vec3d b(m_emesh.V().row(indices(2)) - m_emesh.V().row(indices(0)));
*normal = Vec3f(a.cross(b).cast<float>());
}
if (normal)
*normal = m_normals[idx];
return closest_point.cast<float>();
}