Mesh PopulateMesh(FileReader.ObjectFile obj)
{
Mesh mesh = new Mesh();
List <int[]> triplets = new List <int[]> ();
List <int> submeshes = new List <int> ();
for (int i = 0; i < obj.f.Count; i += 1)
{
for (int j = 0; j < obj.f [i].Count; j += 1)
{
triplets.Add(obj.f [i] [j]);
}
submeshes.Add(obj.f [i].Count);
}
Vector3[] vertices = new Vector3[triplets.Count];
//Vector3[] normals = new Vector3[triplets.Count];
Vector2[] uvs = new Vector2[triplets.Count];
for (int i = 0; i < triplets.Count; i += 1)
{
vertices [i] = obj.v [triplets [i] [0] - 1];
//normals [i] = obj.vn [triplets [i] [2] - 1];
if (triplets [i] [1] > 0)
{
uvs [i] = obj.vt [triplets [i] [1] - 1];
}
}
mesh.name = obj.o;
mesh.vertices = vertices;
//mesh.normals = normals;
mesh.uv = uvs;
mesh.subMeshCount = submeshes.Count;
int vertex = 0;
for (int i = 0; i < submeshes.Count; i += 1)
{
int[] triangles = new int[submeshes [i]];
for (int j = 0; j < submeshes [i]; j += 1)
{
triangles [j] = vertex;
vertex += 1;
}
mesh.SetTriangles(triangles, i);
}
mesh.RecalculateNormals();
mesh.RecalculateBounds();
mesh.Optimize();
return(mesh);
}
IEnumerator ConstructModel(string filename)
{
isLoaded = false;
FileReader.ObjectFile obj = FileReader.ReadObjectFile(directoryPath + filename);
FileReader.MaterialFile mtl = FileReader.ReadMaterialFile(directoryPath + obj.mtllib);
MeshFilter filter = gameObject.AddComponent <MeshFilter> ();
MeshRenderer renderer = gameObject.AddComponent <MeshRenderer> ();
filter.mesh = PopulateMesh(obj);
renderer.materials = DefineMaterial(obj, mtl);
isLoaded = true;
yield return(null);
}
Material[] DefineMaterial(FileReader.ObjectFile obj, FileReader.MaterialFile mtl)
{
Material[] materials = new Material[obj.usemtl.Count];
for (int i = 0; i < obj.usemtl.Count; i += 1)
{
int index = mtl.newmtl.IndexOf(obj.usemtl [i]);
Texture2D texture = new Texture2D(1, 1);
texture.LoadImage(File.ReadAllBytes(Path.Combine(directoryPath, mtl.mapKd [index])));
materials [i] = new Material(Shader.Find("Diffuse"));
materials [i].name = mtl.newmtl [index];
materials [i].mainTexture = texture;
}
return(materials);
}
