static Surf *findSurf( q3_face *f ){
FaceMap::const_iterator it=face_map.find( f );
if( it!=face_map.end() ) return it->second;
Surf *s=d_new Surf;
s->texture=f->texture;
s->lm_index=f->lm_index;
face_map.insert( make_pair( f,s ) );
t_surfs.push_back( s );
return s;
}
bool vtkPolyData_to_polygon_mesh(vtkPolyData* poly_data,
TM& tmesh,
VertexMap& vertex_map,
FaceMap& face_map)
{
typedef typename boost::property_map<TM, CGAL::vertex_point_t>::type VPMap;
typedef typename boost::property_map_value<TM, CGAL::vertex_point_t>::type Point_3;
typedef typename boost::graph_traits<TM>::vertex_descriptor vertex_descriptor;
typedef typename boost::graph_traits<TM>::face_descriptor face_descriptor;
VPMap vpmap = get(CGAL::vertex_point, tmesh);
// get nb of points and cells
vtkIdType nb_points = poly_data->GetNumberOfPoints();
vtkIdType nb_cells = poly_data->GetNumberOfCells();
//extract points
for (vtkIdType i = 0; i<nb_points; ++i)
{
double coords[3];
poly_data->GetPoint(i, coords);
vertex_descriptor v = add_vertex(tmesh);
put(vpmap, v, Point_3(coords[0], coords[1], coords[2]));
vertex_map.insert(std::make_pair(i, v));
}
//extract cells
for (vtkIdType i = 0; i<nb_cells; ++i)
{
vtkCell* cell_ptr = poly_data->GetCell(i);
vtkIdType nb_vertices = cell_ptr->GetNumberOfPoints();
if (nb_vertices != 3){
std::cerr << "Error a cell with " << nb_vertices << " found\n";
return false;
}
std::vector<vertex_descriptor> vr;
vr.push_back(vertex_map[cell_ptr->GetPointId(0)]);
vr.push_back(vertex_map[cell_ptr->GetPointId(1)]);
vr.push_back(vertex_map[cell_ptr->GetPointId(2)]);
face_descriptor f = CGAL::Euler::add_face(vr, tmesh);
face_map.insert(std::make_pair(i, f));
}
return true;
}