public FixedSizeSpritePacker(int width, int height, int padding)
{
if (width <= 1)
{
throw new SpriteException($"Invalid packer width: {width}");
}
if (height <= 1)
{
throw new SpriteException($"Invalid packer height: {width}");
}
if (padding < 0)
{
padding = 0;
}
Padding = padding;
Width = width;
Height = height;
RootRegion = new PackerRegion(new Rectangle(0, 0, width, height));
texture = SpriteAtlas.CreateTexture(width, height);
}
// TODO create a 'shrink' option that discards unused margins to minimize texture size.
public SpriteAtlas CreateSpriteAtlas(bool disposeTextures)
{
SpriteAtlas a = new SpriteAtlas(Width, Height);
a.SetTexture(texture);
foreach (var item in prePacked)
{
a.Blit(item.Texture, item.PackedPosition, Padding);
a.AddSprite(item.FutureSprite);
}
if (disposeTextures)
{
foreach (var item in prePacked)
{
item.Texture?.Dispose();
item.Texture = null;
}
}
a.Finish();
return(a);
}