private static Vertex GetVertex(PAKOBJ obj, int v0Offset, int n0Offset)
{
var v0 = obj.Verticies[v0Offset / VertexData.RecordSize];
var n0 = obj.Normals[n0Offset / NormalData.RecordSize];
Vertex v = new Vertex();
v.Position = new Point3D(v0.RawX, v0.RawY, v0.RawZ);
v.Normal = new Vector3D(n0.RawX, n0.RawY, n0.RawZ);
v.Texture = new Point2D(v0.RawU, v0.RawV) * (1 / 65536.0f);
v.Normal.Normalize();
return(v);
}
public static Model LoadModel(PAKFile file, PAKOBJ obj)
{
Model mdl = new Model();
Func <FaceData, int> offConv = f =>
{
int idx = f.ImageOffset / ImageData.RecordSize;
return(2 * idx + (obj.Images[idx].MaybeTransparent ? 1 : 0));
};
var faceGroups = obj.Faces.GroupBy(offConv).ToList();
foreach (var faceGroup in faceGroups)
{
var imageIdx = faceGroup.First().ImageOffset / ImageData.RecordSize;
var image = obj.Images[imageIdx];
var texture = file.Textures.Single(t => t.Name.EqualsCI(image.ImageName));
Mesh m = new Mesh();
m.Material = new Material
{
Transparent = image.MaybeTransparent,
TextureName = texture.Name,
};
mdl.Textures[m.Material.TextureName] = texture.Image;
foreach (var face in faceGroup)
{
Face f = new Face();
f.Vertices[0] = GetVertex(obj, face.Vertex1Offset, face.Normal1Offset);
f.Vertices[1] = GetVertex(obj, face.Vertex2Offset, face.Normal2Offset);
f.Vertices[2] = GetVertex(obj, face.Vertex3Offset, face.Normal3Offset);
m.Faces.Add(f);
}
mdl.Meshes.Add(m);
mdl.Instances.Add(new MeshInstance
{
MeshIndex = mdl.Meshes.Count - 1,
Transform = Matrix3D.Identity
});
}
return(mdl);
}
