private void ReadVertex()
{
var parts = SplitLine();
if (parts.Length < 4 || parts.Length > 5)
{
ThrowInvalidModelFormatException("Wrong vertex format");
}
if (!TryStrictDoubleParse(parts[1], out var x))
{
ThrowParseException("vertex X");
}
if (!TryStrictDoubleParse(parts[2], out var y))
{
ThrowParseException("vertex Y");
}
if (!TryStrictDoubleParse(parts[3], out var z))
{
ThrowParseException("vertex Z");
}
var w = 1.0;
if (parts.Length > 4 && !TryStrictDoubleParse(parts[4], out w))
{
ThrowParseException("vertex W");
}
_model.AddVertex(new Vertex {
X = x, Y = y, Z = z, W = w
});
}
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);
}
