71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
|
#ifndef GENERATE_CUBE_HH
|
||
|
|
#define GENERATE_CUBE_HH
|
||
|
|
|
||
|
|
template <typename MeshType>
|
||
|
|
size_t generate_cube( MeshType& mesh )
|
||
|
|
{
|
||
|
|
typedef typename MeshType::VertexHandle VertexHandle;
|
||
|
|
typedef typename MeshType::Point Point;
|
||
|
|
|
||
|
|
typename MeshType::VertexHandle vhandle[8];
|
||
|
|
|
||
|
|
vhandle[0] = mesh.add_vertex(Point(-1, -1, 1));
|
||
|
|
vhandle[1] = mesh.add_vertex(Point( 1, -1, 1));
|
||
|
|
vhandle[2] = mesh.add_vertex(Point( 1, 1, 1));
|
||
|
|
vhandle[3] = mesh.add_vertex(Point(-1, 1, 1));
|
||
|
|
vhandle[4] = mesh.add_vertex(Point(-1, -1, -1));
|
||
|
|
vhandle[5] = mesh.add_vertex(Point( 1, -1, -1));
|
||
|
|
vhandle[6] = mesh.add_vertex(Point( 1, 1, -1));
|
||
|
|
vhandle[7] = mesh.add_vertex(Point(-1, 1, -1));
|
||
|
|
|
||
|
|
// generate (quadrilateral) faces
|
||
|
|
|
||
|
|
std::vector< VertexHandle > face_vhandles;
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[0]);
|
||
|
|
face_vhandles.push_back(vhandle[1]);
|
||
|
|
face_vhandles.push_back(vhandle[2]);
|
||
|
|
face_vhandles.push_back(vhandle[3]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[7]);
|
||
|
|
face_vhandles.push_back(vhandle[6]);
|
||
|
|
face_vhandles.push_back(vhandle[5]);
|
||
|
|
face_vhandles.push_back(vhandle[4]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[1]);
|
||
|
|
face_vhandles.push_back(vhandle[0]);
|
||
|
|
face_vhandles.push_back(vhandle[4]);
|
||
|
|
face_vhandles.push_back(vhandle[5]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[2]);
|
||
|
|
face_vhandles.push_back(vhandle[1]);
|
||
|
|
face_vhandles.push_back(vhandle[5]);
|
||
|
|
face_vhandles.push_back(vhandle[6]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[3]);
|
||
|
|
face_vhandles.push_back(vhandle[2]);
|
||
|
|
face_vhandles.push_back(vhandle[6]);
|
||
|
|
face_vhandles.push_back(vhandle[7]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
face_vhandles.clear();
|
||
|
|
face_vhandles.push_back(vhandle[0]);
|
||
|
|
face_vhandles.push_back(vhandle[3]);
|
||
|
|
face_vhandles.push_back(vhandle[7]);
|
||
|
|
face_vhandles.push_back(vhandle[4]);
|
||
|
|
mesh.add_face(face_vhandles);
|
||
|
|
|
||
|
|
return mesh.n_vertices();
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|