/// <summary> /// Rebuilds the atlas texture. /// </summary> public void RebuildAtlas() { if (this.m_Instance == null) { Debug.LogError( "SPAtlasBuilder failed to rebuild the atlas, reason: Sprite Packer Instance reference is null."); return; } if (this.m_Instance.texture == null) { Debug.LogWarning( "Sprite Packer failed to rebuild the atlas, please make sure the atlas texture reference is set."); return; } // Make the atlas texture readable if (SPTools.TextureSetReadWriteEnabled(this.m_Instance.texture, true, false)) { // Get a list with the current sprites and applied actions List <SPSpriteInfo> spriteInfoList = this.m_Instance.GetSpriteListWithAppliedActions(); // Get the source textures asset paths string[] sourceTexturePaths = this.CollectSourceTextureAssetPaths(spriteInfoList); // Make the source textures readable if (!this.SetAssetsReadWriteEnabled(sourceTexturePaths, true)) { Debug.LogError( "Sprite Packer failed to make one or more of the source texture readable, please do it manually."); return; } // Make sure all the textures have the correct texture format this.CorrectTexturesFormat(spriteInfoList); // If we are using max rects packing, sort the sprite info list by size if (this.m_Instance.packingMethod == SPInstance.PackingMethod.MaxRects) { spriteInfoList.Sort(CompareBySize); } // Temporary textures array Texture2D[] textures = new Texture2D[spriteInfoList.Count]; // Create an array to contain the sprite import data SPSpriteImportData[] spritesImportData = new SPSpriteImportData[spriteInfoList.Count]; // Populate the textures and names arrays int ia = 0; foreach (SPSpriteInfo si in spriteInfoList) { // Temporary texture Texture2D texture = null; // Prepare the sprite import data SPSpriteImportData importData = new SPSpriteImportData(); // Prepare the sprite name importData.name = "Sprite_" + ia.ToString(); if (si.targetSprite != null) { importData.name = si.targetSprite.name; } else if (si.source != null && (si.source is Texture2D || si.source is Sprite)) { if (si.source is Texture2D) { importData.name = (si.source as Texture2D).name; } else { importData.name = (si.source as Sprite).name; } } // Prepare texture // In case the source texture is missing, rebuild from the already existing sprite if (si.source == null && si.targetSprite != null) { // Copy the sprite into the temporary texture texture = new Texture2D((int)si.targetSprite.rect.width, (int)si.targetSprite.rect.height, TextureFormat.ARGB32, false); Color[] pixels = si.targetSprite.texture.GetPixels((int)si.targetSprite.rect.x, (int)si.targetSprite.rect.y, (int)si.targetSprite.rect.width, (int)si.targetSprite.rect.height); texture.SetPixels(pixels); texture.Apply(); } // Handle texture source else if (si.source is Texture2D) { // Get as texture Texture2D sourceTex = si.source as Texture2D; // Check if we have as source texture if (sourceTex != null) { // Copy the source texture into the temp one texture = new Texture2D(sourceTex.width, sourceTex.height, TextureFormat.ARGB32, false); Color[] pixels = sourceTex.GetPixels(0, 0, sourceTex.width, sourceTex.height); texture.SetPixels(pixels); texture.Apply(); // Transfer the sprite data importData.border = Vector4.zero; importData.alignment = this.m_Instance.defaultPivot; importData.pivot = this.m_Instance.defaultCustomPivot; } } // Handle sprite source else if (si.source is Sprite) { // Get as sprite Sprite sourceSprite = si.source as Sprite; // Make sure we have the sprite if (sourceSprite != null) { // Copy the sprite into the temporary texture texture = new Texture2D((int)sourceSprite.rect.width, (int)sourceSprite.rect.height, TextureFormat.ARGB32, false); Color[] pixels = sourceSprite.texture.GetPixels((int)sourceSprite.rect.x, (int)sourceSprite.rect.y, (int)sourceSprite.rect.width, (int)sourceSprite.rect.height); texture.SetPixels(pixels); texture.Apply(); // Transfer the sprite data importData.border = sourceSprite.border; importData.alignment = SpriteAlignment.Custom; importData.pivot = new Vector2( (0f - sourceSprite.bounds.center.x / sourceSprite.bounds.extents.x / 2 + 0.5f), (0f - sourceSprite.bounds.center.y / sourceSprite.bounds.extents.y / 2 + 0.5f)); } } // Save the new texture into our array textures[ia] = (texture != null) ? texture : new Texture2D(1, 1); // Set the sprite import data spritesImportData[ia] = importData; // Increase the indexer ia++; } // Make the source textures assets non readable if (SPTools.GetEditorPrefBool(SPTools.Settings_DisableReadWriteEnabled)) { this.SetAssetsReadWriteEnabled(sourceTexturePaths, false); } // Clear the source textures asset paths System.Array.Clear(sourceTexturePaths, 0, sourceTexturePaths.Length); // Create a temporary texture for the packing Texture2D tempTexture = new Texture2D(1, 1, TextureFormat.ARGB32, false); // UV coords array Rect[] uvs; // Pack the textures into the temporary if (this.m_Instance.packingMethod == SPInstance.PackingMethod.Unity) { uvs = tempTexture.PackTextures(textures, this.m_Instance.padding, this.m_Instance.maxSize); } else { uvs = UITexturePacker.PackTextures(tempTexture, textures, this.m_Instance.padding, this.m_Instance.maxSize); // Check if packing failed if (uvs == null) { Debug.LogError( "Sprite Packer texture packing failed, the textures might be exceeding the specified maximum size."); return; } } // Import and Configure the texture atlas (also disables Read/Write) SPTools.ImportAndConfigureAtlasTexture(this.m_Instance.texture, tempTexture, uvs, spritesImportData); // Clear the current sprite info list this.m_Instance.ClearSprites(); // Clear the actions list this.m_Instance.ClearActions(); // Destroy the textures from the temporary textures array for (int ib = 0; ib < textures.Length; ib++) { UnityEngine.Object.DestroyImmediate(textures[ib]); } // Destroy the temporary texture UnityEngine.Object.DestroyImmediate(tempTexture); // Convert the temporary sprite info into array SPSpriteInfo[] spriteInfoArray = spriteInfoList.ToArray(); // Clear the temporary sprite info list spriteInfoList.Clear(); // Apply the new sprite reff to the sprite info and add the sprite info to the sprites list for (int i = 0; i < spriteInfoArray.Length; i++) { SPSpriteInfo info = spriteInfoArray[i]; if (info.targetSprite == null) { info.targetSprite = SPTools.LoadSprite(this.m_Instance.texture, spritesImportData[i].name); } // Add to the instance sprite info list this.m_Instance.AddSprite(info); } // Clear the sprites import data array System.Array.Clear(spritesImportData, 0, spritesImportData.Length); // Set dirty EditorUtility.SetDirty(this.m_Instance); } else { Debug.LogError("Sprite Packer failed to make the atlas texture readable, please do it manually."); } }