public Texture Create(string fileName, string path = "Data/Textures/")
{
string key = path + fileName;
if (!_textureDictionary.ContainsKey(key))
{
Texture newTexture = new Texture(_device, fileName, path);
_textureDictionary.Add(key, newTexture);
return newTexture;
}
return _textureDictionary[key];
}
public ObjModel(Device device, string modelFileName, Texture texture)
{
StreamReader reader = new StreamReader("Data/Models/"+modelFileName);
List<Vector3> vertices = new List<Vector3>();
List<Vector2> textures = new List<Vector2>();
List<Vector3> normals = new List<Vector3>();
List<Tuple<int,int,int>> points = new List<Tuple<int, int, int>>();
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
if (string.IsNullOrWhiteSpace(line) || line[0] =='#')
continue;
string[] items = line.Split(' ');
if(items[0] == "v")
vertices.Add(new Vector3(float.Parse(items[1], CultureInfo.InvariantCulture), float.Parse(items[2], CultureInfo.InvariantCulture), -float.Parse(items[3], CultureInfo.InvariantCulture)));
if (items[0] == "vt")
textures.Add(new Vector2(float.Parse(items[1], CultureInfo.InvariantCulture), 1.0f - float.Parse(items[2], CultureInfo.InvariantCulture)));
if (items[0] == "vn")
normals.Add(new Vector3(float.Parse(items[1], CultureInfo.InvariantCulture), float.Parse(items[2], CultureInfo.InvariantCulture), -float.Parse(items[3], CultureInfo.InvariantCulture)));
if (items[0] == "f")
{
for (int i = 3; i >0; i--)
{
string[] items2 = items[i].Split('/');
points.Add(new Tuple<int, int, int>(int.Parse(items2[0], CultureInfo.InvariantCulture), int.Parse(items2[1], CultureInfo.InvariantCulture), int.Parse(items2[2], CultureInfo.InvariantCulture)));
}
}
}
VertexDefinition.PositionTextureNormal[] verticesDefinition = new VertexDefinition.PositionTextureNormal[points.Count];
for (int i = 0; i < points.Count; i++)
{
verticesDefinition[i].position = vertices[points[i].Item1-1];
verticesDefinition[i].texture = textures[points[i].Item2-1]*10;
verticesDefinition[i].normal = normals[points[i].Item3-1];
}
VertexCount = points.Count;
int[] indicesDefinition = new int[points.Count];
for (int i = 0; i < points.Count; i++)
indicesDefinition[i] = i;
IndexCount = points.Count;
Texture = texture;
VertexBuffer = Buffer.Create(device, BindFlags.VertexBuffer, verticesDefinition);
IndexBuffer = Buffer.Create(device, BindFlags.IndexBuffer, indicesDefinition);
}