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MeshUtils.cpp: MeshRaycaster is now aware of the clipping plane

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This commit is contained in:
Lukas Matena 2019-09-24 12:48:05 +02:00
parent a68a72a660
commit c1e3be9b27
4 changed files with 46 additions and 50 deletions
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48
src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
View file

@ -252,7 +252,7 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
const sla::SupportPoint& support_point = m_editing_mode ? m_editing_cache[i].support_point : m_normal_cache[i];
const bool& point_selected = m_editing_mode ? m_editing_cache[i].selected : false;
if (is_point_clipped(support_point.pos.cast<double>()))
if (is_mesh_point_clipped(support_point.pos.cast<double>()))
continue;
// First decide about the color of the point.
@ -335,14 +335,14 @@ void GLGizmoSlaSupports::render_points(const Selection& selection, bool picking)
bool GLGizmoSlaSupports::is_point_clipped(const Vec3d& point) const
bool GLGizmoSlaSupports::is_mesh_point_clipped(const Vec3d& point) const
{
if (m_clipping_plane_distance == 0.f)
return false;
Vec3d transformed_point = m_model_object->instances.front()->get_transformation().get_matrix() * point;
transformed_point(2) += m_z_shift;
return m_clipping_plane->distance(transformed_point) < 0.;
return m_clipping_plane->is_point_clipped(transformed_point);
}
@ -391,27 +391,15 @@ bool GLGizmoSlaSupports::unproject_on_mesh(const Vec2d& mouse_pos, std::pair<Vec
trafo.set_offset(trafo.get_offset() + Vec3d(0., 0., m_z_shift));
// The raycaster query
std::vector<Vec3f> hits;
std::vector<Vec3f> normals;
m_mesh_raycaster->unproject_on_mesh(mouse_pos, trafo.get_matrix(), camera, &hits, &normals);
// We must also take care of the clipping plane (if active)
unsigned i = 0;
if (m_clipping_plane_distance != 0.f) {
for (i=0; i<hits.size(); ++i)
if (! is_point_clipped(hits[i].cast<double>()))
break;
Vec3f hit;
Vec3f normal;
if (m_mesh_raycaster->unproject_on_mesh(mouse_pos, trafo.get_matrix(), camera, hit, normal, m_clipping_plane.get())) {
// Return both the point and the facet normal.
pos_and_normal = std::make_pair(hit, normal);
return true;
}
if (i==hits.size() || (hits.size()-i) % 2 != 0) {
// All hits are either clipped, or there is an odd number of unclipped
// hits - meaning the nearest must be from inside the mesh.
else
return false;
}
// Calculate and return both the point and the facet normal.
pos_and_normal = std::make_pair(hits[i], normals[i]);
return true;
}
// Following function is called from GLCanvas3D to inform the gizmo about a mouse/keyboard event.
@ -481,19 +469,15 @@ bool GLGizmoSlaSupports::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
std::vector<Vec3f> points_inside;
std::vector<unsigned int> points_idxs = m_selection_rectangle.stop_dragging(m_parent, points);
for (size_t idx : points_idxs)
points_inside.push_back((trafo.get_matrix() * points[idx]).cast<float>());
points_inside.push_back(points[idx].cast<float>());
// Only select/deselect points that are actually visible
for (size_t idx : m_mesh_raycaster->get_unobscured_idxs(trafo, m_parent.get_camera(), points_inside,
[this](const Vec3f& pt) { return is_point_clipped(pt.cast<double>()); }))
for (size_t idx : m_mesh_raycaster->get_unobscured_idxs(trafo, m_parent.get_camera(), points_inside, m_clipping_plane.get()))
{
const sla::SupportPoint &support_point = m_editing_cache[points_idxs[idx]].support_point;
if (! is_point_clipped(support_point.pos.cast<double>())) {
if (rectangle_status == GLSelectionRectangle::Deselect)
unselect_point(points_idxs[idx]);
else
select_point(points_idxs[idx]);
}
if (rectangle_status == GLSelectionRectangle::Deselect)
unselect_point(points_idxs[idx]);
else
select_point(points_idxs[idx]);
}
return true;
}

2
src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.hpp
View file

@ -125,7 +125,7 @@ private:
mutable std::unique_ptr<MeshClipper> m_supports_clipper;
std::vector<const ConfigOption*> get_config_options(const std::vector<std::string>& keys) const;
bool is_point_clipped(const Vec3d& point) const;
bool is_mesh_point_clipped(const Vec3d& point) const;
//void find_intersecting_facets(const igl::AABB<Eigen::MatrixXf, 3>* aabb, const Vec3f& normal, double offset, std::vector<unsigned int>& out) const;
// Methods that do the model_object and editing cache synchronization,