private void ReadFace()
{
var parts = SplitLine();
if (parts.Length < 4)
{
ThrowInvalidModelFormatException("Too few parameters for face");
}
var vertexIndices = new List <int>(3);
var textureCoordIndices = new List <int>(3);
var normalIndices = new List <int>(3);
foreach (var part in parts.Skip(1))
{
ParseFaceIndexBundle(part, vertexIndices, textureCoordIndices, normalIndices);
}
ValidateTextureCoordIndices(textureCoordIndices, vertexIndices);
ValidateNormalIndices(normalIndices, vertexIndices);
_model.AddFace(new Face
{
VertexIndices = vertexIndices.ToArray(),
NormalIndices = normalIndices.ToArray(),
TextureCoordIndices = textureCoordIndices.ToArray(),
});
}
private IModel InternalRead(Stream input, CancellationToken token, IProgress <double> progress)
{
_input = input ?? throw new ArgumentNullException(nameof(input));
if (!_input.CanRead)
{
throw new ArgumentException("Input stream must be readable");
}
_model = new Model.Model();
using (var br = new BinaryReader(input))
{
br.ReadBytes(80);
var faceNum = br.ReadUInt32();
_lastReportedProgress = 0;
for (var i = 0; i < faceNum; i++)
{
ReportProgress(progress);
if (token.IsCancellationRequested)
{
break;
}
var normal = ReadVector(br);
var vertexIdx = _model.Vertices.Count;
_model.AddVertex((Vertex)ReadVector(br));
_model.AddVertex((Vertex)ReadVector(br));
_model.AddVertex((Vertex)ReadVector(br));
br.ReadInt16();
var face = new Face
{
Normal = normal,
VertexIndices = new[] { vertexIdx, vertexIdx + 1, vertexIdx + 2 }
};
_model.AddFace(face);
}
}
return(_model);
}
