public unsafe PmxModel(Stream model)
{
var buffer = new byte[model.Length];
model.Read(buffer, 0, (int)model.Length);
fixed(byte *p = buffer)
{
var mp = p;
this.Header = *((PmxHeader *)mp);
mp += sizeof(PmxHeader);
this.ModelInfo = ModelInfo.ReadData(mp, this.Header, out mp);
this.VertexData = VertexData.ReadData(mp, this.Header, out mp);
this.FaceData = FaceData.ReadData(mp, this.Header, out mp);
this.TextureData = PmxTextureData.ReadData(mp, this.Header, out mp);
this.MaterialData = PmxMaterialData.ReadData(mp, this.Header, out mp);
}
}
public static unsafe FaceData ReadData(byte *pData, PmxHeader header, out byte *offset)
{
var indexCount = *((int *)PmxUtils.ReadAndIncrement(ref pData, sizeof(int)));
var faceData = new FaceData();
faceData.Indices = new uint[indexCount];
switch (header.VertexIndexSize)
{
case sizeof(byte):
for (int i = 0; i < indexCount; i++)
{
faceData.Indices[i] = *pData++;
}
offset = (byte *)pData;
break;
case sizeof(ushort):
var ushortPtr = (ushort *)pData;
for (int i = 0; i < indexCount; i++)
{
faceData.Indices[i] = *ushortPtr++;
}
offset = (byte *)ushortPtr;
break;
case sizeof(uint):
var uintPtr = (uint *)pData;
for (int i = 0; i < indexCount; i++)
{
faceData.Indices[i] = *uintPtr++;
}
offset = (byte *)uintPtr;
break;
default:
throw new NotSupportedException($"Unsupported index size of {header.VertexIndexSize}");
}
return(faceData);
}