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Removed immediate OpenGL mode calls for clipping plane rendering

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This commit is contained in:
Lukas Matena 2020-05-20 12:12:44 +02:00
parent ac8491b599
commit 6e597bb1ee
3 changed files with 34 additions and 39 deletions
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27
src/slic3r/GUI/Gizmos/GLGizmosCommon.cpp
View file

@ -342,15 +342,11 @@ void ObjectClipper::render_cut() const
clipper->set_plane(*m_clp); clipper->set_plane(*m_clp);
clipper->set_transformation(trafo); clipper->set_transformation(trafo);
if (! clipper->get_triangles().empty()) { ::glPushMatrix();
::glPushMatrix(); ::glColor3f(1.0f, 0.37f, 0.0f);
::glColor3f(1.0f, 0.37f, 0.0f); clipper->render_cut();
::glBegin(GL_TRIANGLES); ::glPopMatrix();
for (const Vec3f& point : clipper->get_triangles())
::glVertex3f(point(0), point(1), point(2));
::glEnd();
::glPopMatrix();
}
++clipper_id; ++clipper_id;
} }
} }
@ -457,15 +453,10 @@ void SupportsClipper::render_cut() const
m_clipper->set_plane(*ocl->get_clipping_plane()); m_clipper->set_plane(*ocl->get_clipping_plane());
m_clipper->set_transformation(supports_trafo); m_clipper->set_transformation(supports_trafo);
if (! m_clipper->get_triangles().empty()) { ::glPushMatrix();
::glPushMatrix(); ::glColor3f(1.0f, 0.f, 0.37f);
::glColor3f(1.0f, 0.f, 0.37f); m_clipper->render_cut();
::glBegin(GL_TRIANGLES); ::glPopMatrix();
for (const Vec3f& point : m_clipper->get_triangles())
::glVertex3f(point(0), point(1), point(2));
::glEnd();
::glPopMatrix();
}
} }

36
src/slic3r/GUI/MeshUtils.cpp
View file

@ -27,7 +27,6 @@ void MeshClipper::set_mesh(const TriangleMesh& mesh)
m_mesh = &mesh; m_mesh = &mesh;
m_triangles_valid = false; m_triangles_valid = false;
m_triangles2d.resize(0); m_triangles2d.resize(0);
m_triangles3d.resize(0);
m_tms.reset(nullptr); m_tms.reset(nullptr);
} }
} }
@ -40,18 +39,17 @@ void MeshClipper::set_transformation(const Geometry::Transformation& trafo)
m_trafo = trafo; m_trafo = trafo;
m_triangles_valid = false; m_triangles_valid = false;
m_triangles2d.resize(0); m_triangles2d.resize(0);
m_triangles3d.resize(0);
} }
} }
const std::vector<Vec3f>& MeshClipper::get_triangles() void MeshClipper::render_cut()
{ {
if (! m_triangles_valid) if (! m_triangles_valid)
recalculate_triangles(); recalculate_triangles();
return m_triangles3d; m_vertex_array.render();
} }
@ -67,29 +65,35 @@ void MeshClipper::recalculate_triangles()
const Vec3f& scaling = m_trafo.get_scaling_factor().cast<float>(); const Vec3f& scaling = m_trafo.get_scaling_factor().cast<float>();
// Calculate clipping plane normal in mesh coordinates. // Calculate clipping plane normal in mesh coordinates.
Vec3f up_noscale = instance_matrix_no_translation_no_scaling.inverse() * m_plane.get_normal().cast<float>(); Vec3f up_noscale = instance_matrix_no_translation_no_scaling.inverse() * m_plane.get_normal().cast<float>();
Vec3f up (up_noscale(0)*scaling(0), up_noscale(1)*scaling(1), up_noscale(2)*scaling(2)); Vec3d up (up_noscale(0)*scaling(0), up_noscale(1)*scaling(1), up_noscale(2)*scaling(2));
// Calculate distance from mesh origin to the clipping plane (in mesh coordinates). // Calculate distance from mesh origin to the clipping plane (in mesh coordinates).
float height_mesh = m_plane.distance(m_trafo.get_offset()) * (up_noscale.norm()/up.norm()); float height_mesh = m_plane.distance(m_trafo.get_offset()) * (up_noscale.norm()/up.norm());
// Now do the cutting // Now do the cutting
std::vector<ExPolygons> list_of_expolys; std::vector<ExPolygons> list_of_expolys;
m_tms->set_up_direction(up); m_tms->set_up_direction(up.cast<float>());
m_tms->slice(std::vector<float>{height_mesh}, SlicingMode::Regular, 0.f, &list_of_expolys, [](){}); m_tms->slice(std::vector<float>{height_mesh}, SlicingMode::Regular, 0.f, &list_of_expolys, [](){});
m_triangles2d = triangulate_expolygons_2f(list_of_expolys[0], m_trafo.get_matrix().matrix().determinant() < 0.); m_triangles2d = triangulate_expolygons_2f(list_of_expolys[0], m_trafo.get_matrix().matrix().determinant() < 0.);
// Rotate the cut into world coords: // Rotate the cut into world coords:
Eigen::Quaternionf q; Eigen::Quaterniond q;
q.setFromTwoVectors(Vec3f::UnitZ(), up); q.setFromTwoVectors(Vec3d::UnitZ(), up);
Transform3f tr = Transform3f::Identity(); Transform3d tr = Transform3d::Identity();
tr.rotate(q); tr.rotate(q);
tr = m_trafo.get_matrix().cast<float>() * tr; tr = m_trafo.get_matrix() * tr;
m_triangles3d.clear(); // to avoid z-fighting
m_triangles3d.reserve(m_triangles2d.size()); height_mesh += 0.001f;
for (const Vec2f& pt : m_triangles2d) {
m_triangles3d.push_back(Vec3f(pt(0), pt(1), height_mesh+0.001f)); m_vertex_array.release_geometry();
m_triangles3d.back() = tr * m_triangles3d.back(); for (auto it=m_triangles2d.cbegin(); it != m_triangles2d.cend(); it=it+3) {
} m_vertex_array.push_geometry(tr * Vec3d((*(it+0))(0), (*(it+0))(1), height_mesh), up);
m_vertex_array.push_geometry(tr * Vec3d((*(it+1))(0), (*(it+1))(1), height_mesh), up);
m_vertex_array.push_geometry(tr * Vec3d((*(it+2))(0), (*(it+2))(1), height_mesh), up);
size_t idx = it - m_triangles2d.cbegin();
m_vertex_array.push_triangle(idx, idx+1, idx+2);
}
m_vertex_array.finalize_geometry(true);
m_triangles_valid = true; m_triangles_valid = true;
} }

10
src/slic3r/GUI/MeshUtils.hpp
View file

@ -6,7 +6,7 @@
#include "libslic3r/SLA/EigenMesh3D.hpp" #include "libslic3r/SLA/EigenMesh3D.hpp"
#include "admesh/stl.h" #include "admesh/stl.h"
#include "slic3r/GUI/3DScene.hpp"
#include <cfloat> #include <cfloat>
@ -82,9 +82,9 @@ public:
// into world coordinates. // into world coordinates.
void set_transformation(const Geometry::Transformation& trafo); void set_transformation(const Geometry::Transformation& trafo);
// Return the triangulated cut. The points are returned directly // Render the triangulated cut. Transformation matrices should
// in world coordinates. // be set in world coords.
const std::vector<Vec3f>& get_triangles(); void render_cut();
private: private:
void recalculate_triangles(); void recalculate_triangles();
@ -93,7 +93,7 @@ private:
const TriangleMesh* m_mesh = nullptr; const TriangleMesh* m_mesh = nullptr;
ClippingPlane m_plane; ClippingPlane m_plane;
std::vector<Vec2f> m_triangles2d; std::vector<Vec2f> m_triangles2d;
std::vector<Vec3f> m_triangles3d; GLIndexedVertexArray m_vertex_array;
bool m_triangles_valid = false; bool m_triangles_valid = false;
std::unique_ptr<TriangleMeshSlicer> m_tms; std::unique_ptr<TriangleMeshSlicer> m_tms;
}; };