void ColorMesh::apply_color(Texture &tex)
{
for (int i = 0; i < mesh.vertex_count(); i++) {
Vertex v = mesh.get_vertex(i);
float coord,loc_dim;
float f1,f2,t;
if (use_4d) {
v.x = v.x / fg4d.get_spacing(0);
v.y = v.y / fg4d.get_spacing(1);
v.z = v.z / fg4d.get_spacing(2);
} else {
v.x = v.x / fg.get_spacing(0);
v.y = v.y / fg.get_spacing(1);
v.z = v.z / fg.get_spacing(2);
}
choose_edge(v, f1, f2, t);
loc_dim = lerp(f1, f2, t);
if (loc_dim <= low) {
coord = 0;
} else if (loc_dim >= high) {
coord = 1;
} else {
coord = (loc_dim - low) / (high-low);
}
colors[i] = tex[coord];
}
write_off();
}
bool write_mesh(const Surface_mesh& mesh, const std::string& filename)
{
// extract file extension
std::string::size_type dot(filename.rfind("."));
if (dot == std::string::npos) return false;
std::string ext = filename.substr(dot+1, filename.length()-dot-1);
std::transform(ext.begin(), ext.end(), ext.begin(), tolower);
// extension determines reader
if (ext == "off")
{
return write_off(mesh, filename);
}
// we didn't find a writer module
return false;
}