public static VertexBufferBinding Load(GraphicsDevice device, String filename, Matrix3?positionTransform = null)
{
var library = Injector.Global.Resolve <Library>();
var loader = new WavefrontObjLoader();
using (var stream = library.OpenRead(filename))
{
loader.LoadObj(stream);
}
if (positionTransform.HasValue)
{
Matrix3 transform = positionTransform.Value;
for (int j = 0; j < loader.VertexList.Count; j++)
{
loader.VertexList[j].Vector = Matrix3.Transform(loader.VertexList[j].Vector, transform);
}
}
// vertex buffer
var vertexCount = loader.TriangleCount * 3;
var vertices = new PositionColorTexture[vertexCount];
int i = 0;
foreach (var face in loader.FaceList)
{
var v = face.VertexIndexList;
var t = face.TextureVertexIndexList;
vertices[i + 0] = new PositionColorTexture {
Position = loader.VertexList[v[0] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[0] - 1].Vector
};
vertices[i + 2] = new PositionColorTexture {
Position = loader.VertexList[v[1] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[1] - 1].Vector
};
vertices[i + 1] = new PositionColorTexture {
Position = loader.VertexList[v[2] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[2] - 1].Vector
};
i += 3;
if (v.Length == 4)
{
vertices[i + 0] = new PositionColorTexture {
Position = loader.VertexList[v[2] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[2] - 1].Vector
};
vertices[i + 2] = new PositionColorTexture {
Position = loader.VertexList[v[3] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[3] - 1].Vector
};
vertices[i + 1] = new PositionColorTexture {
Position = loader.VertexList[v[0] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[0] - 1].Vector
};
i += 3;
}
}
var buffer = GraphicsBuffer.Create(device, vertices, false);
return(new VertexBufferBinding
{
Buffer = buffer,
Count = vertexCount,
Declaration = PositionColorTexture.Layout,
Stride = PositionColorTexture.Layout.Stride,
});
}
public static Mesh LoadMesh(Device device, string path)
{
var loader = new WavefrontObjLoader();
loader.LoadObj(path);
//if (positionTransform.HasValue)
//{
// Matrix3 transform = positionTransform.Value;
// for (int j = 0; j < loader.VertexList.Count; j++)
// {
// loader.VertexList[j].Vector = Matrix3.Transform(loader.VertexList[j].Vector, transform);
// }
//}
// vertex buffer
var vertexCount = loader.TriangleCount * 3;
var vertices = new ColoredTexturedVertex[vertexCount];
int i = 0;
foreach (var face in loader.FaceList)
{
var v = face.VertexIndexList;
var n = face.NormalVertexIndexList;
var t = face.TextureVertexIndexList;
vertices[i + 0] = new ColoredTexturedVertex {
Position = loader.VertexList[v[0] - 1].Vector, Normal = loader.NormalList[n[0] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[0] - 1].Vector
};
vertices[i + 1] = new ColoredTexturedVertex {
Position = loader.VertexList[v[1] - 1].Vector, Normal = loader.NormalList[n[1] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[1] - 1].Vector
};
vertices[i + 2] = new ColoredTexturedVertex {
Position = loader.VertexList[v[2] - 1].Vector, Normal = loader.NormalList[n[2] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[2] - 1].Vector
};
i += 3;
if (v.Length == 4)
{
vertices[i + 0] = new ColoredTexturedVertex {
Position = loader.VertexList[v[2] - 1].Vector, Normal = loader.NormalList[n[2] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[2] - 1].Vector
};
vertices[i + 1] = new ColoredTexturedVertex {
Position = loader.VertexList[v[3] - 1].Vector, Normal = loader.NormalList[n[3] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[3] - 1].Vector
};
vertices[i + 2] = new ColoredTexturedVertex {
Position = loader.VertexList[v[0] - 1].Vector, Normal = loader.NormalList[n[0] - 1].Vector, Color = new Vector4(1, 1, 1, 1), Texture = loader.TextureList[t[0] - 1].Vector
};
i += 3;
}
}
var indices = new int[vertexCount];
for (int j = 0; j < vertexCount; j++)
{
indices[j] = j;
}
Mesh mesh = new Mesh(device);
mesh.VertexBuffer = Buffer11.Create <ColoredTexturedVertex>(device.NativeDevice, BindFlags.VertexBuffer, vertices.ToArray());
mesh.IndexBuffer = Buffer11.Create(device.NativeDevice, BindFlags.IndexBuffer, indices.ToArray());
mesh.VertexSize = Utilities.SizeOf <ColoredTexturedVertex>();
mesh.IndexCount = indices.Count();
return(mesh);
}