// replaces color to transparent
public Texture2D GenerateAtlas(Texture2D[] sprites, out UnityEditor.AssetImporters.SpriteImportData[] spriteData, int cols, int rows,
Color mask, bool baseTwo = true)
{
var spriteImportData = new List <UnityEditor.AssetImporters.SpriteImportData>();
var width = cols * spriteSize.x;
var height = rows * spriteSize.y;
if (baseTwo)
{
var baseTwoValue = CalculateNextBaseTwoValue(Math.Max(width, height));
width = baseTwoValue;
height = baseTwoValue;
}
// blank transparent canvas
var atlas = Texture2DUtil.CreateTransparentTexture(width, height);
var index = 0;
// step through each pixel
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
Rect spriteRect = new Rect(col * spriteSize.x, atlas.height - ((row + 1) * spriteSize.y),
spriteSize.x, spriteSize.y);
// change pixel mask to transparent
Color[] pixelPallete = ReplaceMaskToTransparent(mask, sprites[index].GetPixels());
atlas.SetPixels((int)spriteRect.x, (int)spriteRect.y, (int)spriteRect.width,
(int)spriteRect.height, pixelPallete);
atlas.Apply();
var importData = new UnityEditor.AssetImporters.SpriteImportData
{
rect = spriteRect,
pivot = textureSettings.spritePivot,
border = Vector4.zero,
name = index.ToString()
};
spriteImportData.Add(importData);
index++;
if (index >= sprites.Length)
{
break;
}
}
if (index >= sprites.Length)
{
break;
}
}
spriteData = spriteImportData.ToArray();
return(atlas);
}
public override void OnImportAsset(UnityEditor.AssetImporters.AssetImportContext ctx)
{
name = GetFileName(ctx.assetPath);
AseFile aseFile = ReadAseFile(ctx.assetPath);
int frameCount = aseFile.Header.Frames;
SpriteAtlasBuilder atlasBuilder = new SpriteAtlasBuilder(textureSettings, aseFile.Header.Width, aseFile.Header.Height);
Texture2D[] frames = null;
if (importType != AseFileImportType.LayerToSprite)
{
frames = aseFile.GetFrames();
}
else
{
frames = aseFile.GetLayersAsFrames();
}
UnityEditor.AssetImporters.SpriteImportData[] spriteImportData = new UnityEditor.AssetImporters.SpriteImportData[0];
//if (textureSettings.transparentMask)
//{
// atlas = atlasBuilder.GenerateAtlas(frames, out spriteImportData, textureSettings.transparentColor, false);
//}
//else
//{
// atlas = atlasBuilder.GenerateAtlas(frames, out spriteImportData, false);
//}
atlas = atlasBuilder.GenerateAtlas(frames, out spriteImportData, textureSettings.transparentMask, false);
atlas.filterMode = textureSettings.filterMode;
atlas.alphaIsTransparency = false;
atlas.wrapMode = TextureWrapMode.Clamp;
atlas.name = "Texture";
ctx.AddObjectToAsset("Texture", atlas);
ctx.SetMainObject(atlas);
switch (importType)
{
case AseFileImportType.LayerToSprite:
case AseFileImportType.Sprite:
ImportSprites(ctx, aseFile, spriteImportData);
break;
case AseFileImportType.Tileset:
ImportTileset(ctx, atlas);
break;
}
ctx.SetMainObject(atlas);
}
private static Sprite CreateNamedSprite(
string name,
Texture2D texture,
UnityEditor.AssetImporters.SpriteImportData importData,
AsepriteImporterSettings settings)
{
var sprite = Sprite.Create(
texture,
importData.rect,
importData.pivot,
settings.PixelsPerUnit,
settings.ExtrudeEdges,
settings.MeshType,
importData.border,
settings.GeneratePhysicsShape);
sprite.name = name;
return(sprite);
}
public Texture2D GenerateAtlas(Texture2D[] sprites, out UnityEditor.AssetImporters.SpriteImportData[] spriteData, int cols, int rows,
bool baseTwo = true)
{
var spriteImportData = new List <UnityEditor.AssetImporters.SpriteImportData>();
var width = cols * spriteSize.x;
var height = rows * spriteSize.y;
if (baseTwo)
{
var baseTwoValue = CalculateNextBaseTwoValue(Math.Max(width, height));
width = baseTwoValue;
height = baseTwoValue;
}
var atlas = Texture2DUtil.CreateTransparentTexture(width, height);
var index = 0;
for (int row = 0; row < rows; row++)
{
for (int col = 0; col < cols; col++)
{
Rect spriteRect = new Rect(col * spriteSize.x, atlas.height - ((row + 1) * spriteSize.y),
spriteSize.x, spriteSize.y);
switch (textureSettings.mirror)
{
case MirrorOption.X:
sprites[index] = FlipAtlas(sprites[index]);
break;
case MirrorOption.Y:
sprites[index] = FlipAtlas(sprites[index], true);
break;
}
atlas.SetPixels((int)spriteRect.x, (int)spriteRect.y, (int)spriteRect.width,
(int)spriteRect.height, sprites[index].GetPixels());
atlas.Apply();
var importData = new UnityEditor.AssetImporters.SpriteImportData
{
rect = spriteRect,
pivot = textureSettings.spritePivot,
border = Vector4.zero,
name = index.ToString()
};
spriteImportData.Add(importData);
index++;
if (index >= sprites.Length)
{
break;
}
}
if (index >= sprites.Length)
{
break;
}
}
spriteData = spriteImportData.ToArray();
return(atlas);
}
public AsepriteAssets CreateAssets(AsepriteImporterSettings settings, string name)
{
var padding = settings.InnerPadding;
var paddedFrameSize = new Vector2Int(
_frameSize.x + padding * 2,
_frameSize.y + padding * 2);
var spritesheet = CreateBlankSpritesheet(
settings,
paddedFrameSize,
_frames.Count,
out int cols);
var sprites = new List <Sprite>();
for (var i = 0; i < _frames.Count; ++i)
{
var frame = _frames[i];
var col = i % cols;
var row = Mathf.FloorToInt(i / (float)cols) + 1;
var spriteRect = new Rect(
col * paddedFrameSize.x,
spritesheet.height - (row * paddedFrameSize.y),
paddedFrameSize.x,
paddedFrameSize.y);
var framePixels = frame.GetFramePixels(_frameSize);
spritesheet.SetPixels(
(int)spriteRect.x + padding,
(int)spriteRect.y + padding,
_frameSize.x,
_frameSize.y,
framePixels);
var spriteData = new UnityEditor.AssetImporters.SpriteImportData
{
rect = spriteRect,
pivot = settings.PivotValue
+ new Vector2(
padding / (float)paddedFrameSize.x,
padding / (float)paddedFrameSize.y),
name = i.ToString()
};
var sprite = CreateNamedSprite(
string.Format("{0}_{1}", name, spriteData.name),
spritesheet,
spriteData,
settings);
sprites.Add(sprite);
}
spritesheet.Apply();
var animations = CreateAnimations(name, sprites, typeof(SpriteRenderer), settings.AnimationLoop);
var uiAnimName = $"UI_{name}";
var uiAnimations = CreateAnimations(uiAnimName, sprites, typeof(Image), settings.AnimationLoop);
return(new AsepriteAssets(
spritesheet,
sprites,
animations.Concat(uiAnimations)));
}