public static ObjFile Load(string filename)
{
ObjFile file = new ObjFile();
LoadModels(filename, file);
GenNormals(file);
OrganizeModels(file);
return file;
}
private static void OrganizeModels(ObjFile file)
{
List<ObjModel> models = new List<ObjModel>();
foreach (var model in file.models)
{
var newModel = OrganizeModels(model);
models.Add(newModel);
}
file.models.Clear();
file.models.AddRange(models);
}
private static void GenNormals(ObjFile file)
{
foreach (var model in file.models)
{
GenNormals(model);
}
}
private static void LoadModels(string filename, ObjFile file)
{
using (var sr = new StreamReader(filename))
{
var model = new ObjModel();
while (!sr.EndOfStream)
{
string line = sr.ReadLine();
string[] parts = line.Split(separator, StringSplitOptions.RemoveEmptyEntries);
if (parts[0] == ("v"))
{
if (model.innerFaceList.Count > 0)
{
file.models.Add(model);
model = new ObjModel();
}
vec3 position = new vec3(float.Parse(parts[1]), float.Parse(parts[2]), float.Parse(parts[3]));
model.positionList.Add(position);
}
else if (parts[0] == ("vt"))
{
vec2 uv = new vec2(float.Parse(parts[1]), float.Parse(parts[2]));
model.uvList.Add(uv);
}
else if (parts[0] == ("vn"))
{
vec3 normal = new vec3(float.Parse(parts[1]), float.Parse(parts[2]), float.Parse(parts[3]));
model.normalList.Add(normal);
}
else if (parts[0] == ("f"))
{
Triangle triangle = ParseFace(parts);
model.innerFaceList.Add(triangle);
}
}
file.models.Add(model);
}
}