void loadObj( const std::string& filename )
{
ObjParser parser;
if (! parser.parseFile( filename ) )
{
std::cerr
<< "Failed to load .obj file: " << parser.errorText() << std::endl
<< "FILE: " << parser.filename() << ":"
<< parser.lineNumber() << std::endl
<< "LINE: " << parser.lineText() << std::endl;
}
else
{
std::cout << parser.dump();
}
}
ObjTriangleMesh::ObjTriangleMesh( const Transform *o2c, const Transform *c2o, int subdlevels, const std::string &objfile ): Shape(o2c, c2o) {
std::vector<Point> points;
std::vector<Vector> normals;
std::vector<uv> uvs;
std::vector<int> vIndex;
std::vector<int> nIndex;
std::vector<int> uvIndex;
ObjParser parser = ObjParser(objfile, &points, &normals, &uvs, &vIndex, &nIndex, &uvIndex);
bool success = parser.parseFile();
assert(success);
size_t numTriangles = vIndex.size() / 3;
size_t numVertices = vIndex.size();
LOG_INFO("Found " << numTriangles << " triangles and " << numVertices << " vertices.");
Point *P = new Point[ numVertices ];
Vector *N = new Vector[ numVertices ];
assert(nIndex.size() == vIndex.size());
uv *UV = NULL;
if(uvs.size()){
assert(uvIndex.size() == vIndex.size());
UV = new uv[ numVertices ];
}
int *vertexIndex = new int[3 * numTriangles];
for (size_t i=0; i < 3*numTriangles; i++) {
// obj files starts vert indices at 1 instead of 0.
vertexIndex[i] = vIndex[i] - 1;
nIndex[i]--;
if(UV)
uvIndex[i]--;
assert(vertexIndex[i] < numVertices);
}
for (size_t i = 0; i < numVertices; i++) {
P[i] = points[vertexIndex[i]];
N[i] = normals[nIndex[i]];
if (N[i].x == 0. && N[i].y == 0. && N[i].z == 0.) {
LOG_WARNING("Found empty normal. Setting to 0,1,0");
N[i] = Vector(0,1,0);
}
if (UV){
UV[i] = uvs[uvIndex[i]];
}
vertexIndex[i] = (int)i;
}
if (subdlevels){
m_shape = shared_ptr<Shape>(new LoopSubdivMesh(o2c, c2o, (int)numTriangles, (int)numVertices, vertexIndex, P, UV, subdlevels));
} else {
m_shape = shared_ptr<Shape>(new TriangleMesh(o2c, c2o, (int)numTriangles, (int)numVertices, vertexIndex, P, N, UV));
}
delete[] vertexIndex;
delete[] P;
delete[] N;
if(UV)
delete[] UV;
}