private Bitmap RenderRegionBiomes(RegionFile region, Bitmap b, int offsetX, int offsetY)
{
foreach (Chunk c in region.Chunks)
{
if (c == null || c.Root == null)
continue;
Coord chunkOffset = new Coord(c.Coords);
chunkOffset.ChunktoRegionRelative();
chunkOffset.ChunktoAbsolute();
RenderChunkBiomes(c, b, offsetX + chunkOffset.X, offsetY + chunkOffset.Z);
}
return b;
}