private static bool PackTextures(Texture2D texture, List <SpriteEntry> sprites, int padding, bool unityPacking, bool forceSquare)
{
#if UNITY_3_5 || UNITY_4_0
var maxSize = 4096;
#else
var maxSize = SystemInfo.maxTextureSize;
#endif
maxSize = Mathf.Min(maxSize, 2048);
sprites.Sort(Compare);
var textures = sprites.Select(x => x.texture).ToArray();
var rects = new Rect[0];
if (unityPacking)
{
rects = texture.PackTextures(textures, padding, maxSize);
}
else
{
rects = TexturePacker.PackTextures(texture, textures, 4, 4, padding, maxSize, forceSquare);
}
for (var i = 0; i < sprites.Count; ++i)
{
var rect = TextureUtility.ConvertToPixels(rects[i], texture.width, texture.height, true);
if (textures[i] == null)
{
return(false);
}
if (Mathf.RoundToInt(rect.width) != textures[i].width)
{
return(false);
}
var spriteEntry = sprites[i];
spriteEntry.x = Mathf.RoundToInt(rect.x);
spriteEntry.y = Mathf.RoundToInt(rect.y);
spriteEntry.width = Mathf.RoundToInt(rect.width);
spriteEntry.height = Mathf.RoundToInt(rect.height);
}
return(true);
}
