void Scene_c3t3_item::draw_triangle(const Kernel::Point_3& pa,
const Kernel::Point_3& pb,
const Kernel::Point_3& pc, bool /* is_cut */) const {
#undef darker
Kernel::Vector_3 n = cross_product(pb - pa, pc - pa);
n = n / CGAL::sqrt(n*n);
for (int i = 0; i<3; i++)
{
normals.push_back(n.x());
normals.push_back(n.y());
normals.push_back(n.z());
}
positions_poly.push_back(pa.x());
positions_poly.push_back(pa.y());
positions_poly.push_back(pa.z());
positions_poly.push_back(pb.x());
positions_poly.push_back(pb.y());
positions_poly.push_back(pb.z());
positions_poly.push_back(pc.x());
positions_poly.push_back(pc.y());
positions_poly.push_back(pc.z());
}
void addTriangle(Kernel::Point_3 pa, Kernel::Point_3 pb, Kernel::Point_3 pc, CGAL::Color color)
{
Kernel::Vector_3 n = cross_product(pb - pa, pc - pa);
n = n / CGAL::sqrt(n*n);
for (int i = 0; i<3; i++)
{
normals->push_back(n.x());
normals->push_back(n.y());
normals->push_back(n.z());
}
vertices->push_back(pa.x());
vertices->push_back(pa.y());
vertices->push_back(pa.z());
vertices->push_back(pb.x());
vertices->push_back(pb.y());
vertices->push_back(pb.z());
vertices->push_back(pc.x());
vertices->push_back(pc.y());
vertices->push_back(pc.z());
edges->push_back(pa.x());
edges->push_back(pa.y());
edges->push_back(pa.z());
edges->push_back(pb.x());
edges->push_back(pb.y());
edges->push_back(pb.z());
edges->push_back(pb.x());
edges->push_back(pb.y());
edges->push_back(pb.z());
edges->push_back(pc.x());
edges->push_back(pc.y());
edges->push_back(pc.z());
edges->push_back(pc.x());
edges->push_back(pc.y());
edges->push_back(pc.z());
edges->push_back(pa.x());
edges->push_back(pa.y());
edges->push_back(pa.z());
for(int i=0; i<3; i++)
{
colors->push_back((float)color.red()/255);
colors->push_back((float)color.green()/255);
colors->push_back((float)color.blue()/255);
}
}
void operator()( Kernel::Point_3& storage ) const {
storage = Kernel::Point_3(
_roundFT( storage.x() ),
_roundFT( storage.y() ),
_roundFT( storage.z() )
);
}
void SketchSample::compute_mesh_position() {
typedef CGAL::Cartesian<double> Kernel;
Kernel::Iso_cuboid_3 box = CGAL::bounding_box(p_mesh->points_begin(),
p_mesh->points_end());
Kernel::Point_3 center = CGAL::midpoint(box.min(), box.max());
Kernel::Vector_3 diameter = box.min() - box.max();
mesh_center_x = center.x();
mesh_center_y = center.y();
mesh_center_z = center.z();
mesh_radius = CGAL::sqrt( diameter * diameter )/2;
}
void Scene_c3t3_item::draw_triangle_edges(const Kernel::Point_3& pa,
const Kernel::Point_3& pb,
const Kernel::Point_3& pc)const {
#undef darker
Kernel::Vector_3 n = cross_product(pb - pa, pc - pa);
n = n / CGAL::sqrt(n*n);
positions_lines.push_back(pa.x());
positions_lines.push_back(pa.y());
positions_lines.push_back(pa.z());
positions_lines.push_back(pb.x());
positions_lines.push_back(pb.y());
positions_lines.push_back(pb.z());
positions_lines.push_back(pb.x());
positions_lines.push_back(pb.y());
positions_lines.push_back(pb.z());
positions_lines.push_back(pc.x());
positions_lines.push_back(pc.y());
positions_lines.push_back(pc.z());
positions_lines.push_back(pc.x());
positions_lines.push_back(pc.y());
positions_lines.push_back(pc.z());
positions_lines.push_back(pa.x());
positions_lines.push_back(pa.y());
positions_lines.push_back(pa.z());
}
void Scene_c3t3_item::draw_triangle_edges(const Kernel::Point_3& pa,
const Kernel::Point_3& pb,
const Kernel::Point_3& pc)const {
#undef darker
positions_lines.push_back(pa.x());
positions_lines.push_back(pa.y());
positions_lines.push_back(pa.z());
positions_lines.push_back(pb.x());
positions_lines.push_back(pb.y());
positions_lines.push_back(pb.z());
positions_lines.push_back(pb.x());
positions_lines.push_back(pb.y());
positions_lines.push_back(pb.z());
positions_lines.push_back(pc.x());
positions_lines.push_back(pc.y());
positions_lines.push_back(pc.z());
positions_lines.push_back(pc.x());
positions_lines.push_back(pc.y());
positions_lines.push_back(pc.z());
positions_lines.push_back(pa.x());
positions_lines.push_back(pa.y());
positions_lines.push_back(pa.z());
}
Kernel::Point_2 operator()( const Kernel::Point_3& storage ) const {
return Kernel::Point_2( storage.x(), storage.y() );
}
Kernel::FT operator()( const Kernel::Point_3& storage ) const {
return storage.x();
}
// a helper method for running different iterators
void running_iterators( Polyhedron& P) {
if ( P.size_of_facets() == 0)
return;
std::size_t nv = P.size_of_vertices();
std::cout << "The number of vertices in the Polyhedron: " << nv << std::endl;
std::cout << "The number of facets in the Polyhedron: " << P.size_of_facets() << std::endl;
std::cout << "The number of half edges in the Polyhedron: " << P.size_of_halfedges() << std::endl;
std::cout << std:: endl;
Polyhedron::Vertex_iterator last_v = P.vertices_end();
-- last_v; // the last of the old vertices
Polyhedron::Edge_iterator last_e = P.edges_end();
-- last_e; // the last of the old edges
Polyhedron::Facet_iterator last_f = P.facets_end();
-- last_f; // the last of the old facets
int k = 0;
Polyhedron::Facet_iterator f = P.facets_begin();
do {
std::cout << "Printing a facet index: " << k++ << std::endl;
f->halfedge();
} while ( f++ != last_f);
std::cout << std::endl;
// -------------------------------------------------
// traverse the vertices
// -------------------------------------------------
std::cout << "Printing the vertex indices: " << std::endl;
int n=0;
for (Polyhedron::Vertex_iterator vi = P.vertices_begin(); vi != P.vertices_end(); ++vi)
{
Kernel::Point_3 p;
p = vi->point();
std::cout << "Vertex index: " << n++ << std::endl;
std::cout << "p.x() = " << p.x() << std::endl;
std::cout << "p.y() = " << p.y() << std::endl;
std::cout << "p.z() = " << p.z() << std::endl;
}
std::cout << std::endl;
// -------------------------------------------------
// traverse the edges
// -------------------------------------------------
std::cout << "Iterating over the edges.... " << std::endl;
n=0;
for (Polyhedron::Edge_iterator ei = P.edges_begin(); ei != P.edges_end(); ++ei)
{
ei->next();
Kernel::Point_3 p;
p = ei->vertex()->point();
std::cout << "For edge index: " << n++ << std::endl;
std::cout << "p.x() = " << p.x() << std::endl;
std::cout << "p.y() = " << p.y() << std::endl;
std::cout << "p.z() = " << p.z() << std::endl;
}
std::cout << std::endl;
// -----------------------------------------------
// Do something else with the edge iterators
// -----------------------------------------------
Polyhedron::Edge_iterator e = P.edges_begin();
++ last_e; // make it the past-the-end position again
while ( e != last_e) {
Polyhedron::Halfedge_handle h = e;
++e;
};
CGAL_postcondition( P.is_valid());
}