public static bool Load(ObjMesh mesh, string fileName)
{
try
{
using (StreamReader streamReader = new StreamReader(fileName))
{
ReadFile(mesh, streamReader);
streamReader.Close();
return(true);
}
}
catch { return(false); }
}
static void ReadFile(ObjMesh mesh, TextReader textReader)
{
vertices = new List <Vector3>();
normals = new List <Vector3>();
texCoords = new List <Vector2>();
objVerticesIndexDictionary = new Dictionary <ObjMesh.ObjVertex, uint> ();
objVertices = new List <ObjMesh.ObjVertex>();
objTriangles = new List <ObjMesh.ObjTriangle>();
objQuads = new List <ObjMesh.ObjQuad>();
string line;
while ((line = textReader.ReadLine()) != null)
{
line = line.Trim(splitCharacters);
line = line.Replace(" ", " ");
string[] parameters = line.Split(splitCharacters);
switch (parameters[0])
{
case "p": // Point
break;
case "v": // Vertex
float x = float.Parse(parameters[1]);
float y = float.Parse(parameters[2]);
float z = float.Parse(parameters[3]);
vertices.Add(new Vector3(x, y, z));
break;
case "vt": // TexCoord
float u = float.Parse(parameters[1]);
float v = float.Parse(parameters[2]);
texCoords.Add(new Vector2(u, v));
break;
case "vn": // Normal
float nx = float.Parse(parameters[1]);
float ny = float.Parse(parameters[2]);
float nz = float.Parse(parameters[3]);
normals.Add(new Vector3(nx, ny, nz));
break;
case "f":
switch (parameters.Length)
{
case 4:
ObjMesh.ObjTriangle objTriangle = new ObjMesh.ObjTriangle();
objTriangle.Index0 = ParseFaceParameter(parameters[1]);
objTriangle.Index1 = ParseFaceParameter(parameters[2]);
objTriangle.Index2 = ParseFaceParameter(parameters[3]);
objTriangles.Add(objTriangle);
break;
case 5:
ObjMesh.ObjQuad objQuad = new ObjMesh.ObjQuad();
objQuad.Index0 = ParseFaceParameter(parameters[1]);
objQuad.Index1 = ParseFaceParameter(parameters[2]);
objQuad.Index2 = ParseFaceParameter(parameters[3]);
objQuad.Index3 = ParseFaceParameter(parameters[4]);
objQuads.Add(objQuad);
break;
}
break;
}
}
mesh.Vertices = objVertices.ToArray();
mesh.Triangles = objTriangles.ToArray();
mesh.Quads = objQuads.ToArray();
objVerticesIndexDictionary = null;
vertices = null;
normals = null;
texCoords = null;
objVertices = null;
objTriangles = null;
objQuads = null;
}
