int up(TIFF *T, int i)
{
if (i < 6)
return TIFFSetDirectory(T, i);
else
{
if (up(T, face_parent(i)))
return dn(T, face_index(i));
else
return 0;
}
}
void load_mesh(std::string fileName)
{
std::ifstream fin(fileName.c_str());
if (!fin.is_open())
{
printf("ERROR: Unable to load mesh from %s!\n", fileName.c_str());
exit(0);
}
float xmin = FLT_MAX;
float xmax = -FLT_MAX;
float ymin = FLT_MAX;
float ymax = -FLT_MAX;
float zmin = FLT_MAX;
float zmax = -FLT_MAX;
while (true)
{
char line[1024] = {0};
fin.getline(line, 1024);
if (fin.eof())
break;
if (strlen(line) <= 1)
continue;
std::vector<std::string> tokens;
tokenize(line, tokens, " ");
if (tokens[0] == "v")
{
float x = atof(tokens[1].c_str());
float y = atof(tokens[2].c_str());
float z = atof(tokens[3].c_str());
xmin = std::min(x, xmin);
xmax = std::max(x, xmax);
ymin = std::min(y, ymin);
ymax = std::max(y, ymax);
zmin = std::min(z, zmin);
zmax = std::max(z, zmax);
Vector3 position = {x, y, z};
gPositions.push_back(position);
}
else if (tokens[0] == "vn")
{
float x = atof(tokens[1].c_str());
float y = atof(tokens[2].c_str());
float z = atof(tokens[3].c_str());
Vector3 normal = {x, y, z};
gNormals.push_back(normal);
}
else if (tokens[0] == "f")
{
unsigned int a = face_index(tokens[1].c_str());
unsigned int b = face_index(tokens[2].c_str());
unsigned int c = face_index(tokens[3].c_str());
Triangle triangle;
triangle.indices[0] = a - 1;
triangle.indices[1] = b - 1;
triangle.indices[2] = c - 1;
gTriangles.push_back(triangle);
}
}
fin.close();
printf("Loaded mesh from %s. (%lu vertices, %lu normals, %lu triangles)\n", fileName.c_str(), gPositions.size(), gNormals.size(), gTriangles.size());
printf("Mesh bounding box is: (%0.4f, %0.4f, %0.4f) to (%0.4f, %0.4f, %0.4f)\n", xmin, ymin, zmin, xmax, ymax, zmax);
}
