private static void CreateAtlasRaw()
{
var path = AssetDatabase.GetAssetPath(Selection.activeObject);
path = string.IsNullOrEmpty(path) ? "Assets" : path;
if (File.Exists(path))
{
path = Path.GetDirectoryName(path);
}
var atlas = CreateInstance <AtlasRaw>();
atlas.bins = new BinRaw[0];
var setting = new PackSetting();
atlas.maxSize = setting.maxAtlasSize;
atlas.padding = setting.padding;
atlas.isPOT = setting.isPOT;
atlas.forceSquare = setting.forceSquare;
var assetPath = Path.Combine(path, PackConst.DefaultAtlasAssetName);
assetPath = AssetDatabase.GenerateUniqueAssetPath(assetPath);
atlas.id = PackUtil.GenerateAtlasId();
AssetDatabase.CreateAsset(atlas, assetPath);
Selection.activeObject = AssetDatabase.LoadAssetAtPath <AtlasRaw>(assetPath);
}
private void PackFolder(string folder)
{
var textures = AssetDatabase.FindAssets("t:Texture2D", new string[] { folder })
.Select(guid => AssetDatabase.GUIDToAssetPath(guid))
.Select(path => new PackAssetSprite(path)).ToArray();
if (textures.Length == 0)
{
return;
}
for (int i = 0; i < textures.Length; i++)
{
var texPath = textures[i].assetPath;
var assetPath = texPath.Replace(folder + "/", "");
var assetDir = Path.GetDirectoryName(assetPath);
var assetName = Path.GetFileNameWithoutExtension(assetPath);
var assetLabel = string.IsNullOrEmpty(assetDir) ? assetName : assetDir + "/" + assetName;
textures[i].name = assetLabel;
textures[i].quality = PackUtil.CheckTextureCompressed(texPath) ? PackQuality.AlphaSplit : PackQuality.Full;
}
var atlasRaw = AtlasPacker.Pack(folder, textures, mSetting);
if (atlasRaw != null)
{
Selection.activeObject = atlasRaw;
}
}
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);
}
public PackAtlasSprite(BinRaw binRaw, SpriteRaw spriteRaw)
{
mMain = binRaw.main;
Debug.Assert(mMain != null, "Can not find main texture.");
mAddition = binRaw.addition;
mName = spriteRaw.name;
mRect = spriteRaw.rect;
mBorder = spriteRaw.border;
mPivot = spriteRaw.pivot;
mTransparency = PackUtil.CheckAtlasBinTranparency(binRaw);
mQuality = (PackQuality)binRaw.quality;
}
public void Setup(PackSetting setting, BinRaw bin)
{
this.setting = setting;
this.bin = bin;
mainAsset = bin.main;
mainAssetPath = AssetDatabase.GetAssetPath(mainAsset);
mainImporter = AssetImporter.GetAtPath(mainAssetPath) as TextureImporter;
if (bin.addition != null)
{
addAsset = bin.addition;
addAssetPath = AssetDatabase.GetAssetPath(addAsset);
addImporter = AssetImporter.GetAtPath(addAssetPath) as TextureImporter;
}
transparency = PackUtil.CheckAtlasBinTranparency(bin);
maxTextureSize = PackUtil.Scale2POT(Mathf.Max((int)bin.size.x, (int)bin.size.y));
}
protected virtual void ProcessCommon()
{
mainImporter.isReadable = false;
mainImporter.maxTextureSize = maxTextureSize;
mainImporter.mipmapEnabled = false;
mainImporter.wrapMode = TextureWrapMode.Clamp;
mainImporter.npotScale = TextureImporterNPOTScale.None;
mainImporter.textureCompression = TextureImporterCompression.Uncompressed;
mainImporter.alphaIsTransparency = true;
if (addImporter != null)
{
addImporter.isReadable = false;
addImporter.maxTextureSize = PackUtil.Scale2POT(Mathf.Max(mainAsset.width, mainAsset.height));
addImporter.mipmapEnabled = false;
addImporter.wrapMode = TextureWrapMode.Clamp;
addImporter.npotScale = TextureImporterNPOTScale.None;
addImporter.textureCompression = TextureImporterCompression.Uncompressed;
addImporter.alphaIsTransparency = true;
}
}
public PackAssetSprite(string assetPath)
{
mAssetPath = assetPath;
var sprite = mAssetPath.StartsWith("Assets/") ?
AssetDatabase.LoadAssetAtPath <UnityEngine.Sprite>(mAssetPath) : null;
if (sprite != null)
{
mBorder = sprite.border;
mPivot = sprite.pivot;
}
else
{
mBorder = Vector4.zero;
mPivot = new Vector2(0.5f, 0.5f);
}
mAsset = new Texture2D(1, 1);
mAsset.LoadImage(File.ReadAllBytes(mAssetPath));
mName = Path.GetFileNameWithoutExtension(mAssetPath);
mRect = new Rect(0, 0, mAsset.width, mAsset.height);
mTransparency = PackUtil.CheckTextureTranparency(mAsset.format);
mQuality = PackQuality.AlphaSplit;
}
public AtlasRaw GenerateAtlas()
{
if (sprites.Length > PackConst.MaxNumberOfSpriteInAtlas)
{
Debug.LogError(string.Format("Sprites in excess of {0}.", PackConst.MaxNumberOfSpriteInAtlas));
return(null);
}
for (int i = 0; i < sprites.Length; i++)
{
var texName = sprites[i].name;
var texRect = sprites[i].rect;
if (texRect.width > setting.maxAtlasSize ||
texRect.height > setting.maxAtlasSize)
{
Debug.LogError(string.Format("Texture size should be lower than {0}: {1}.", setting.maxAtlasSize, texName));
return(null);
}
}
var atlasSprites = sprites.Where(i => i is PackAtlasSprite).Select(i => i as PackAtlasSprite).ToArray();
PackUtil.LoadAtlasTextures(atlasSprites);
var groups = sprites.GroupBy(texture => new { texture.quality, texture.transparency })
.OrderBy(group => group.Key.quality)
.ThenBy(group => group.Key.transparency);
var bins = groups.Select(group =>
{
var groupQuality = group.Key.quality;
var groupTransparency = group.Key.transparency;
var groupSprites = group.ToArray();
var groupProcessor = PackProcessor.Fetch(groupQuality);
groupProcessor.Setup(setting, groupSprites, groupTransparency);
var groupBins = groupProcessor.Execute();
foreach (var groupBin in groupBins)
{
groupBin.quality = (int)groupQuality;
}
return(groupBins);
}).SelectMany(i => i).ToArray();
for (int i = 0; i < bins.Length; i++)
{
foreach (var sprite in bins[i].sprites)
{
sprite.bin = i;
}
}
var atlasRaw = AssetDatabase.LoadAssetAtPath <AtlasRaw>(atlasPath);
var atlasExist = atlasRaw != null;
if (atlasExist)
{
RemoveAtlasTextures(atlasRaw);
}
else
{
atlasRaw = ScriptableObject.CreateInstance <AtlasRaw>();
}
atlasRaw.hideFlags = HideFlags.DontUnloadUnusedAsset;
atlasRaw.bins = bins;
atlasRaw.maxSize = setting.maxAtlasSize;
atlasRaw.padding = setting.padding;
atlasRaw.isPOT = setting.isPOT;
atlasRaw.forceSquare = setting.forceSquare;
if (atlasRaw.id == 0)
{
atlasRaw.id = PackUtil.GenerateAtlasId();
}
CreateAtlasTextures(atlasRaw);
if (atlasExist)
{
EditorUtility.SetDirty(atlasRaw);
AssetDatabase.SaveAssets();
}
else
{
AssetDatabase.CreateAsset(atlasRaw, atlasPath);
}
return(atlasRaw);
}
private static void MapAtlas2Sprite(string targetFolder, List <UnityEngine.UI.Sprite> sprites)
{
var atlasRaw2AtlasFolder = new Dictionary <string, string>();
var atlasRaw2AtlasSprites = new Dictionary <string, Dictionary <string, string> >();
foreach (var sprite in sprites)
{
if (sprite != null && sprite.type == UnityEngine.UI.Sprite.Type.Atlas)
{
var path = AssetDatabase.GetAssetPath(sprite.atlasRaw);
if (!string.IsNullOrEmpty(path))
{
atlasRaw2AtlasFolder[path] = Path.Combine(targetFolder, Path.GetFileName(Path.GetDirectoryName(path)));
atlasRaw2AtlasSprites[path] = new Dictionary <string, string>();
}
}
}
foreach (var pair in atlasRaw2AtlasFolder)
{
var atlasPath = pair.Key;
var targetPath = pair.Value;
var atlasFolder = Path.GetDirectoryName(atlasPath);
var atlasTag = Path.GetFileName(atlasFolder);
var atlasRaw = AssetDatabase.LoadAssetAtPath <AtlasRaw>(atlasPath);
var spriteRaws = atlasRaw.bins.SelectMany(i => i.sprites).ToArray();
var exportSprites = AtlasPacker.Export(atlasRaw, spriteRaws, targetPath);
for (int i = 0; i < exportSprites.Length; i++)
{
atlasRaw2AtlasSprites[atlasPath][spriteRaws[i].name] = exportSprites[i];
var maxTextureSize = PackUtil.Scale2POT((int)Mathf.Max(spriteRaws[i].rect.width, spriteRaws[i].rect.height));
var binRaw = atlasRaw.bins[spriteRaws[i].bin];
var compressed = (PackQuality)binRaw.quality != PackQuality.Full;
var tranparency = PackUtil.CheckAtlasBinTranparency(binRaw);
var importer = (TextureImporter)AssetImporter.GetAtPath(exportSprites[i]);
importer.textureType = TextureImporterType.Sprite;
importer.spritePivot = spriteRaws[i].pivot;
importer.spriteBorder = spriteRaws[i].border;
importer.spritePackingTag = atlasTag;
importer.isReadable = false;
importer.maxTextureSize = maxTextureSize;
importer.mipmapEnabled = false;
importer.wrapMode = TextureWrapMode.Clamp;
importer.npotScale = TextureImporterNPOTScale.None;
importer.textureCompression = TextureImporterCompression.Uncompressed;
importer.alphaIsTransparency = true;
if (compressed)
{
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "Standalone",
overridden = true,
maxTextureSize = maxTextureSize,
compressionQuality = (int)TextureCompressionQuality.Normal,
format = TextureImporterFormat.DXT5,
});
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "iPhone",
overridden = true,
maxTextureSize = maxTextureSize,
compressionQuality = (int)TextureCompressionQuality.Normal,
format = tranparency ? TextureImporterFormat.RGBA16 : TextureImporterFormat.RGB16,
});
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "Android",
overridden = true,
maxTextureSize = maxTextureSize,
compressionQuality = (int)TextureCompressionQuality.Normal,
format = tranparency ? TextureImporterFormat.ETC2_RGBA8 : TextureImporterFormat.ETC2_RGB4,
});
}
else
{
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "Standalone",
overridden = false,
});
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "iPhone",
overridden = false,
});
importer.SetPlatformTextureSettings(new TextureImporterPlatformSettings()
{
name = "Android",
overridden = false,
});
}
importer.SaveAndReimport();
}
}
for (int i = 0; i < sprites.Count; i++)
{
var sprite = sprites[i];
if (sprite != null && sprite.type == UnityEngine.UI.Sprite.Type.Atlas)
{
var atlasPath = AssetDatabase.GetAssetPath(sprite.atlasRaw);
if (atlasRaw2AtlasSprites.ContainsKey(atlasPath))
{
var atlasSprites = atlasRaw2AtlasSprites[atlasPath];
if (atlasSprites.ContainsKey(sprites[i].spriteName))
{
var spritePath = atlasSprites[sprites[i].spriteName];
var unitySprite = AssetDatabase.LoadAssetAtPath <UnityEngine.Sprite>(spritePath);
sprites[i] = new UnityEngine.UI.Sprite(unitySprite);
}
}
}
}
}
private static void MapSprite2Atlas(string targetFolder, PackSetting setting, List <UnityEngine.UI.Sprite> sprites)
{
var spritePaths = new List <string>();
foreach (var sprite in sprites)
{
if (sprite != null && sprite.type == UnityEngine.UI.Sprite.Type.Sprite)
{
var path = AssetDatabase.GetAssetPath(sprite.sprite);
if (!string.IsNullOrEmpty(path) && !spritePaths.Contains(path))
{
spritePaths.Add(path);
}
}
}
var pathSpriteMap = new Dictionary <string, UnityEngine.UI.Sprite>();
var spriteGroups = spritePaths.GroupBy(path =>
{
var importer = AssetImporter.GetAtPath(path) as TextureImporter;
return(importer.spritePackingTag);
});
foreach (var group in spriteGroups)
{
var groupPaths = group.ToArray();
var groupNames = Util.MapSpritePath2SpriteNameInAtlas(groupPaths);
var groupSprites = new PackAssetSprite[groupPaths.Length];
for (int i = 0; i < groupPaths.Length; i++)
{
groupSprites[i] = new PackAssetSprite(groupPaths[i])
{
name = groupNames[i]
};
groupSprites[i].quality = PackUtil.CheckTextureCompressed(groupPaths[i]) ? PackQuality.AlphaSplit : PackQuality.Full;
}
var groupTag = string.IsNullOrEmpty(group.Key) ? EmptyTagName : group.Key;
var groupFolder = Path.Combine(targetFolder, groupTag);
if (!Directory.Exists(groupFolder))
{
Directory.CreateDirectory(groupFolder);
}
var atlasRaw = AtlasPacker.Pack(groupFolder, groupSprites, setting);
for (int i = 0; i < groupPaths.Length; i++)
{
pathSpriteMap[groupPaths[i]] = new UnityEngine.UI.Sprite(atlasRaw, groupNames[i]);
}
}
;
for (int i = 0; i < sprites.Count; i++)
{
var sprite = sprites[i];
if (sprite != null && sprite.type == UnityEngine.UI.Sprite.Type.Sprite)
{
var path = AssetDatabase.GetAssetPath(sprite.sprite);
if (!string.IsNullOrEmpty(path))
{
sprites[i] = pathSpriteMap[path];
}
}
}
}
public override void OnInspectorGUI()
{
OnValidateSelected();
var atlas = target as AtlasRaw;
EditorGUILayout.GetControlRect(false, 2);
int clickIndex = AtlasEditorUtil.TitleBar(new GUIContent[]
{
new GUIContent("+File"),
new GUIContent("+Folder"),
});
if (clickIndex == 0)
{
DisplayImportMenu(atlas, false);
}
else if (clickIndex == 1)
{
DisplayImportMenu(atlas, true);
}
mRepackFold = AtlasEditorUtil.ToggleBar(new GUIContent("Settings"), mRepackFold);
if (mRepackFold)
{
if (!mPackDataInit)
{
mPackDataInit = true;
mSetting = new PackSetting(atlas.maxSize, atlas.padding, atlas.isPOT, atlas.forceSquare);
}
EditorGUI.indentLevel += 1;
mSetting.maxAtlasSize = EditorGUILayout.IntPopup("Max Size", mSetting.maxAtlasSize, Array.ConvertAll(PackConst.AtlasSizeList, value => value.ToString()), PackConst.AtlasSizeList);
mSetting.padding = EditorGUILayout.IntField("Padding", mSetting.padding);
mSetting.isPOT = EditorGUILayout.Toggle("Power Of 2", mSetting.isPOT);
GUI.enabled = mSetting.isPOT;
if (!mSetting.isPOT)
{
mSetting.forceSquare = false;
}
mSetting.forceSquare = EditorGUILayout.Toggle("Force Square", mSetting.forceSquare);
GUI.enabled = true;
var rect = EditorGUILayout.GetControlRect(false, 20);
if (GUI.Button(new Rect(rect.center.x - 75, rect.y, 150, rect.height), "Repack"))
{
AtlasPacker.Repack(atlas, null, mSetting);
}
EditorGUI.indentLevel -= 1;
EditorGUILayout.Space();
}
EditorGUI.BeginChangeCheck();
mSearchPattern = AtlasEditorUtil.SearchBar(new GUIContent("Search Sprite"), mSearchPattern);
if (EditorGUI.EndChangeCheck() || mAtlasDirty)
{
mSearchResults.Clear();
if (!string.IsNullOrEmpty(mSearchPattern))
{
mSearchResults.AddRange(AtlasEditorUtil.SearchSprites(atlas, 0, mSearchPattern));
}
}
if (mAtlasDirty)
{
mAtlasDirty = false;
mSelectedBin = Mathf.Clamp(mSelectedBin, 0, atlas.bins.Length - 1);
mSelectedSprites.Clear();
}
EditorGUI.indentLevel += 1;
if (!string.IsNullOrEmpty(mSearchPattern))
{
EditorGUILayout.LabelField(string.Format("{0} results", mSearchResults.Count));
}
if (mSearchResults != null && mSearchResults.Count > 0)
{
OnValidateResult();
OnSearchResultGUI();
}
EditorGUI.indentLevel -= 1;
if (atlas.bins.Length > 0)
{
var titleRect = EditorGUILayout.GetControlRect(false, EditorStyles.toolbar.fixedHeight);
var controlId = GUIUtility.GetControlID(FocusType.Passive);
var eventType = Event.current.GetTypeForControl(controlId);
if (eventType == EventType.Repaint)
{
EditorStyles.toolbar.Draw(titleRect, GUIContent.none, controlId);
}
var binNames = Array.ConvertAll(atlas.bins, i => PackUtil.GetDisplayName(i));
var binIndexes = new int[binNames.Length];
for (int i = 0; i < binNames.Length; i++)
{
binIndexes[i] = i;
}
mSelectedBin = EditorGUI.IntPopup(new Rect(10, titleRect.y, titleRect.width - 10, titleRect.height), "Preview Bin", mSelectedBin, binNames, binIndexes, EditorStyles.toolbarPopup);
mSelectedBin = Mathf.Clamp(mSelectedBin, 0, atlas.bins.Length - 1);
EditorGUILayout.Space();
var bin = atlas.bins[mSelectedBin];
var previewRect = EditorGUILayout.GetControlRect(false, 512);
previewRect.width = Mathf.Min(previewRect.width, (float)bin.main.width / bin.main.height * previewRect.height);
previewRect.height = (float)bin.main.height / bin.main.width * previewRect.width;
OnPreviewBin(previewRect);
}
}
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);
}
