public static string[] Export(AtlasRaw atlas, SpriteRaw[] sprites, string folder)
{
var exportSprites = new string[sprites.Length];
var atlasSprites = sprites.Select(i => PackAtlasSprite.ParseSprite(atlas.bins[i.bin], i)).ToArray();
PackUtil.LoadAtlasTextures(atlasSprites);
for (int i = 0; i < atlasSprites.Length; i++)
{
var sprite = atlasSprites[i];
var rect = sprite.rect;
var texture = PackUtil.CreateBlankTexture((int)rect.width, (int)rect.height, sprite.transparency ? TextureFormat.RGBA32 : TextureFormat.RGB24);
texture.SetPixels(sprite.Read());
var bytes = sprite.transparency ? texture.EncodeToPNG() : texture.EncodeToJPG();
var path = Path.Combine(folder, sprite.name) + (sprite.transparency ? ".png" : ".jpg");
var dir = Path.GetDirectoryName(path);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
File.WriteAllBytes(path, bytes);
exportSprites[i] = path;
if (EditorUtility.DisplayCancelableProgressBar("", "export: " + sprite.name, (float)i / sprites.Length))
{
break;
}
}
EditorUtility.ClearProgressBar();
AssetDatabase.Refresh(ImportAssetOptions.ForceSynchronousImport);
return(exportSprites);
}
protected virtual BinRaw[] PackSprites(PackSetting setting, IPackSprite[] sprites)
{
var textures = sprites.Select(sprite => new Packer.Area((int)sprite.rect.width, (int)sprite.rect.height)).ToArray();
var spriteRaws = new List <SpriteRaw>();
var packers = new List <Packer>();
var sizeList = PackConst.AtlasSizeList;
var maxSize = setting.maxAtlasSize;
var padding = setting.padding;
var isPOT = forcePowerOf2 || setting.isPOT;
var forceSquare = this.forceSquare || setting.forceSquare;
var index = 0;
while (index < textures.Length)
{
var texArea = textures[index];
Packer.Rect texRect = null;
for (int i = 0; i < packers.Count; i++)
{
var packer = packers[i];
while (true)
{
if (packer.Push(texArea, out texRect))
{
spriteRaws.Add(new SpriteRaw()
{
bin = i,
rect = new Rect(texRect.x, texRect.y, texRect.width, texRect.height),
});
break;
}
var width = packer.bin.width;
var height = packer.bin.height;
if (forceSquare)
{
width *= 2;
height *= 2;
}
else
{
if (width > height)
{
height *= 2;
}
else
{
width *= 2;
}
}
if (width > maxSize || height > maxSize)
{
break;
}
packer.Extend(new Packer.Bin(width, height));
}
if (texRect != null)
{
break;
}
}
if (texRect == null)
{
packers.Add(new Packer(Packer.Algorithm.AdvancedHorizontalSkyline,
new Packer.Bin(sizeList[0], sizeList[0]), padding));
}
else
{
index += 1;
}
}
var bins = new BinRaw[packers.Count];
for (int i = 0; i < packers.Count; i++)
{
bins[i] = new BinRaw();
bins[i].size = !isPOT && !forceSquare ?
Vector2.zero : new Vector2(packers[i].bin.width, packers[i].bin.height);
}
if (!isPOT && !forceSquare)
{
for (int i = 0; i < spriteRaws.Count; i++)
{
var sprite = spriteRaws[i];
var bin = bins[sprite.bin];
bin.size = new Vector2(
Mathf.Max(bin.size.x, sprite.rect.xMax),
Mathf.Max(bin.size.y, sprite.rect.yMax));
}
if (forceMultiplyOf4)
{
foreach (var bin in bins)
{
bin.size = new Vector2(
Mathf.CeilToInt(bin.size.x / 4) * 4,
Mathf.CeilToInt(bin.size.y / 4) * 4);
}
}
}
for (int i = 0; i < sprites.Length; i++)
{
var sprite = sprites[i];
var spriteRaw = spriteRaws[i];
spriteRaw.name = sprite.name.Replace("\\", "/");
spriteRaw.border = sprite.border;
spriteRaw.pivot = sprite.pivot;
var rect = spriteRaw.rect;
var binRaw = bins[spriteRaw.bin];
binRaw.sprites = binRaw.sprites ?? new SpriteRaw[0];
Array.Resize(ref binRaw.sprites, binRaw.sprites.Length + 1);
binRaw.sprites[binRaw.sprites.Length - 1] = spriteRaw;
var main = binRaw.main;
var add = binRaw.addition;
var colors = sprite.Read();
if (main == null)
{
main = PackUtil.CreateBlankTexture((int)binRaw.size.x, (int)binRaw.size.y,
!alphaSplit && transparency ? TextureFormat.RGBA32 : TextureFormat.RGB24);
main.hideFlags = HideFlags.DontUnloadUnusedAsset;
binRaw.main = main;
}
main.SetPixels(
(int)rect.x, (int)rect.y,
(int)rect.width, (int)rect.height,
colors);
if (alphaSplit && transparency)
{
if (add == null)
{
add = PackUtil.CreateBlankTexture((int)binRaw.size.x, (int)binRaw.size.y, TextureFormat.RGB24);
add.hideFlags = HideFlags.DontUnloadUnusedAsset;
binRaw.addition = add;
}
for (int c = 0; c < colors.Length; c++)
{
colors[c] = new Color(colors[c].a, 0, 0);
}
add.SetPixels(
(int)rect.x, (int)rect.y,
(int)rect.width, (int)rect.height,
colors);
}
}
return(bins);
}
