UV Boxes for creature

UVBoxes.cs

MeshRenderBoneComposition comp =
  creatureAsset.creature_manager.target_creature.render_composition;
List<MeshRenderRegion> regions = comp.getRegions();
foreach (MeshRenderRegion region in regions) {
  Rect r = new Rect();
  int uvIndex = region.getUVsIndex();
  for (int i = 0; i < region.getNumPts(); i++) {
    Vector2 p = new Vector2(region.store_uvs[uvIndex], region.store_uvs[uvIndex + 1]);
    if (i == 0) {
      r.xMax = r.xMin = (float)p.x;
      r.yMax = r.yMin = (float)p.y;
    } else {
      r.xMin = Mathf.Min(r.xMin, (float)p.x);
      r.xMax = Mathf.Max(r.xMax, (float)p.x);
      r.yMin = Mathf.Min(r.yMin, (float)p.y);
      r.yMax = Mathf.Max(r.yMax, (float)p.y);
    }
    uvIndex += 2;
  }
  // Now, r should be the UV box for the region...
  // To use it, I do something like this, where "_texture" is the output texture and "sprite" is some source-asset.
  Texture2D t = sprite.texture;
  Graphics.CopyTexture(
    t, 0, 0, (int)(r.x * t.width), (int)(r.y * t.height), (int)(r.width * t.width), (int)(r.height * t.height),
    _texture, 0, 0, (int)(r.x * _texture.width), (int)(r.y * _texture.height)
  );
}