public static Texture ReadTexture(ChunkReader reader, TextureType type)
{
var tex = new Texture(type);
var header_size = reader.ReadUInt16();
using (var headerReader = reader.GetSubChunk(header_size))
{
// ordinal string
tex.ord = headerReader.ReadString();
// process subchunks as they're encountered
while (headerReader.BytesLeft > 0)
{
var subchunk_id = headerReader.ReadID<TextureDataType>();
var subchunk_size = headerReader.ReadUInt16();
subchunk_size += (ushort)(subchunk_size & 1);
using (var subChunkReader = headerReader.GetSubChunk(subchunk_size))
{
switch (subchunk_id)
{
case TextureDataType.ID_CHAN:
tex.Channel = subChunkReader.ReadID<TextureChannel>();
break;
case TextureDataType.ID_OPAC:
tex.opac_type = subChunkReader.ReadUInt16();
tex.opacity.value = subChunkReader.ReadSingle();
tex.opacity.envelope_index = subChunkReader.ReadVariableLengthIndex();
break;
case TextureDataType.ID_ENAB:
tex.enabled = subChunkReader.ReadUInt16();
break;
case TextureDataType.ID_NEGA:
tex.negative = subChunkReader.ReadUInt16();
break;
case TextureDataType.ID_AXIS:
tex.axis = subChunkReader.ReadUInt16();
break;
default:
Console.WriteLine("Unknown texture header type " + reader.GetIDString((uint)subchunk_id));
break;
}
}
}
}
if (reader.BytesLeft > 0)
{
using (var blockReader = reader.GetSubChunk((uint)reader.BytesLeft))
{
switch (type)
{
case TextureType.ID_IMAP: tex.ReadImageMap(blockReader); break;
case TextureType.ID_PROC: tex.ReadProcedural(blockReader); break;
case TextureType.ID_GRAD: tex.ReadGradient(blockReader); break;
default:
Console.WriteLine("Unknown texture type " + reader.GetIDString((uint)type));
break;
}
}
}
return tex;
}
//======================================================================
// ParseTexture()
//
// Create a new texture for BTEX, CTEX, etc. subchunks.
//======================================================================
static Texture ParseTexture(string src)
{
var pos = src.IndexOf("Image Map");
if (pos != -1)
{
var tex = new Texture(TextureType.ID_IMAP);
if (src.Contains("Planar")) tex.imap.projection = ProjectionType.PROJ_PLANAR;
else if (src.Contains("Cylindrical")) tex.imap.projection = ProjectionType.PROJ_CYLINDRICAL;
else if (src.Contains("Spherical")) tex.imap.projection = ProjectionType.PROJ_SPHERICAL;
else if (src.Contains("Cubic")) tex.imap.projection = ProjectionType.PROJ_CUBIC;
else if (src.Contains("Front")) tex.imap.projection = ProjectionType.PROJ_FRONT;
tex.imap.aa_strength = 1.0f;
tex.imap.amplitude.value = 1.0f;
return tex;
} else
{
var tex = new Texture(TextureType.ID_PROC);
tex.proc.name = src;
return tex;
}
}
