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WIP: First working implementation of the triangle selector for the FDM support gizmo

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This commit is contained in:
Lukas Matena 2019-09-26 13:30:22 +02:00
parent 7afe7326b6
commit 08daddb5de
7 changed files with 108 additions and 28 deletions
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29
src/slic3r/GUI/MeshUtils.cpp
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@ -95,9 +95,16 @@ void MeshClipper::recalculate_triangles()
}
Vec3f MeshRaycaster::get_triangle_normal(const indexed_triangle_set& its, size_t facet_idx)
{
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();
}
bool MeshRaycaster::unproject_on_mesh(const Vec2d& mouse_pos, const Transform3d& trafo, const Camera& camera,
Vec3f& position, Vec3f& normal, const ClippingPlane* clipping_plane) const
Vec3f& position, Vec3f& normal, const ClippingPlane* clipping_plane,
size_t* facet_idx) const
{
const std::array<int, 4>& viewport = camera.get_viewport();
const Transform3d& model_mat = camera.get_view_matrix();
@ -112,7 +119,21 @@ bool MeshRaycaster::unproject_on_mesh(const Vec2d& mouse_pos, const Transform3d&
pt1 = inv * pt1;
pt2 = inv * pt2;
std::vector<sla::EigenMesh3D::hit_result> hits = m_emesh.query_ray_hits(pt1, pt2-pt1);
point = pt1;
direction = pt2-pt1;
}
bool MeshRaycaster::unproject_on_mesh(const Vec2d& mouse_pos, const Transform3d& trafo, const Camera& camera,
Vec3f& position, Vec3f& normal, const ClippingPlane* clipping_plane,
size_t* facet_idx) const
{
Vec3d point;
Vec3d direction;
line_from_mouse_pos(mouse_pos, trafo, camera, point, direction);
std::vector<sla::EigenMesh3D::hit_result> hits = m_emesh.query_ray_hits(point, direction);
if (hits.empty())
return false; // no intersection found
@ -134,6 +155,10 @@ bool MeshRaycaster::unproject_on_mesh(const Vec2d& mouse_pos, const Transform3d&
// Now stuff the points in the provided vector and calculate normals if asked about them:
position = hits[i].position().cast<float>();
normal = hits[i].normal().cast<float>();
if (facet_idx)
*facet_idx = hits[i].face();
return true;
}