Fixed gray texture on export.

Fixed gray texture on export bug, it was caused by the texture scale function (during upscaling), right now it's required to have the texture dimensions be a power of 2 width/height.
Optional OBJ/PNG/sprite export options.
Chanaged readme.
TODO: Cleanup export code. Make proper scale options (bilinear & point).

MA_ToolBox/MA_TextureAtlasserPro/Scripts/Editor/Utils/MA_TextureAtlasserProUtils.cs

@@ -363,7 +363,7 @@ namespace MA_TextureAtlasserPro
 							//Create new texture part
 							Texture2D newTexturePart = (Texture2D)MA_Texture.MA_TextureUtils.ConvertToReadableTexture(q.textureGroups[i].texture);
 							//Scale it
-							newTexturePart = newTexturePart.MA_Scale2D((int)q.guiRect.width, (int)q.guiRect.height);
+							newTexturePart = newTexturePart.MA_Scale32D((int)q.guiRect.width, (int)q.guiRect.height);
 							//Add it
 							newTexture = newTexture.MA_Combine2D(newTexturePart, (int)q.guiRect.x, (int)q.guiRect.y);
 						}
@@ -371,12 +371,79 @@ namespace MA_TextureAtlasserPro
 
 					//Save it
 					newTexture.MA_Save2D("MA_" + newTexture.name, savePath);
+
+					TextureImporter textureImporter = (TextureImporter)AssetImporter.GetAtPath(savePath + "MA_" + newTexture.name + ".png");
+					textureImporter.textureType = TextureImporterType.Default;
+					textureImporter.SaveAndReimport();
 				}
 
 				//Refresh
 				AssetDatabase.Refresh();
 			}
 		}
+
+		public static void ExportAtlasSpritesPNG(MA_TextureAtlasserProAtlas atlas, bool sliceSprites = true, string savePath = EXPORTASSETPATH)
+		{
+			if (atlas != null && atlas.textureQuads != null && atlas.textureGroupRegistration != null)
+			{
+				ExportAtlasTexturesPNG(atlas, savePath);
+
+				//Foreach texture group
+				for (int i = 0; i < atlas.textureGroupRegistration.Count; i++)
+				{
+					//Convert
+					string textureName = "MA_" + atlas.name + "_" + atlas.textureGroupRegistration[i].name + ".png";
+					TextureImporter textureImporter = (TextureImporter)AssetImporter.GetAtPath(savePath + textureName);
+					textureImporter.textureType = TextureImporterType.Sprite;
+					textureImporter.alphaIsTransparency = true;
+
+					//Slice sprites.
+					if (sliceSprites)
+					{
+						textureImporter.spriteImportMode = SpriteImportMode.None; //Reset it to update?
+						textureImporter.spriteImportMode = SpriteImportMode.Multiple;
+						List<SpriteMetaData> spriteMetaData = new List<SpriteMetaData>();
+
+						foreach (MA_TextureAtlasserProQuad q in atlas.textureQuads)
+						{
+							if (q.textureGroups != null && q.textureGroups[i].texture != null)
+							{
+								//Create new SpriteMetaData.
+								SpriteMetaData smd = new SpriteMetaData();
+
+								smd.name = q.name;
+								smd.rect = new Rect(q.guiRect.x, atlas.textureAtlasSize.y - q.guiRect.y - q.guiRect.height, q.guiRect.width, q.guiRect.height);
+
+								spriteMetaData.Add(smd);
+							}
+						}
+
+						textureImporter.spritesheet = spriteMetaData.ToArray();
+					}
+					else
+					{
+						textureImporter.spriteImportMode = SpriteImportMode.Single;
+					}
+
+
+					textureImporter.SaveAndReimport();
+				}
+
+				//Refresh
+				AssetDatabase.Refresh();
+			}
+		}
+
+		public static bool IsPowerOfTwo(int value)
+		{
+			//While x is even and > 1
+			while (((value % 2) == 0) && value > 1)
+			{
+				value /= 2;
+			}
+
+			return (value == 1);
+		}
 	}
 }
 #endif

MA_ToolBox/MA_TextureAtlasserPro/Scripts/Editor/Views/MA_TextureAtlasserProInspectorView.cs

@@ -13,6 +13,8 @@ namespace MA_TextureAtlasserPro
 
 		private bool isEditing = false;
 
+		private GUIStyle labelStyle = new GUIStyle(GUI.skin.label);
+
 		public MA_TextureAtlasserProInspectorView(MA_TextureAtlasserProWindow currentEditorWindow, string title) : base(currentEditorWindow, title)
 		{
 			
@@ -115,8 +117,17 @@ namespace MA_TextureAtlasserPro
 					}
 
 					GUILayout.FlexibleSpace();
+					if(!MA_TextureAtlasserProUtils.IsPowerOfTwo((int)curWindow.textureAtlas.selectedTextureQuad.guiRect.width) || !MA_TextureAtlasserProUtils.IsPowerOfTwo((int)curWindow.textureAtlas.selectedTextureQuad.guiRect.height))
+					{
+						labelStyle.normal.textColor = Color.red;
+					}
+					else
+					{
+						labelStyle.normal.textColor = Color.black;
+					}
+
 					GUILayout.Label("x " + curWindow.textureAtlas.selectedTextureQuad.guiRect.x.ToString() + ", y " + curWindow.textureAtlas.selectedTextureQuad.guiRect.y.ToString());
-					GUILayout.Label("w " + curWindow.textureAtlas.selectedTextureQuad.guiRect.width.ToString() + ", h " + curWindow.textureAtlas.selectedTextureQuad.guiRect.height.ToString());
+					GUILayout.Label("w " + curWindow.textureAtlas.selectedTextureQuad.guiRect.width.ToString() + ", h " + curWindow.textureAtlas.selectedTextureQuad.guiRect.height.ToString(), labelStyle);
 
 					GUILayout.EndVertical();
 					GUILayout.EndArea();           

MA_ToolBox/MA_TextureAtlasserPro/Scripts/Editor/Windows/MA_TextureAtlasserProExportWindow.cs

@@ -14,15 +14,20 @@ namespace MA_TextureAtlasserPro
 		public static MA_TextureAtlasserProWindow curWindow;
 
 		//Data
-		private static bool isLoaded = false;		//Make sure we wait a frame at the start to setup and don't draw.
+		private static bool isLoaded = false;       //Make sure we wait a frame at the start to setup and don't draw.
+
+		private bool exportObjDefault = false;
+		private bool exportPngDefault = false;
+		private bool exportSprite = false;
+		private bool exportSliceSprite = false;
 
 		[MenuItem("MA_ToolKit/MA_TextureAtlasserPro/Export Atlas")]	
 		private static void Init()
         {
 			GetCurrentWindow();
 
-			thisWindow.minSize = new Vector2(500,160);
-			thisWindow.maxSize = new Vector2(500,160);
+			thisWindow.minSize = new Vector2(420, 200);
+			thisWindow.maxSize = new Vector2(420, 200);
 
 			thisWindow.titleContent.text = "MA_ExportTextureAtlas";
 
@@ -35,8 +40,8 @@ namespace MA_TextureAtlasserPro
 
 			GetCurrentWindow();
 
-			thisWindow.minSize = new Vector2(500,160);
-			thisWindow.maxSize = new Vector2(500,160);
+			thisWindow.minSize = new Vector2(420, 200);
+			thisWindow.maxSize = new Vector2(420, 200);
 
 			thisWindow.titleContent.text = "MA_ExportTextureAtlas";
 
@@ -94,18 +99,68 @@ namespace MA_TextureAtlasserPro
 				
 				if(curWindow != null && curWindow.textureAtlas != null)
 				{
-					//Export options
-					GUILayout.Box("Note: No custom export options right now.. :<", EditorStyles.helpBox);
-
 					//Export
-					GUILayout.BeginVertical(EditorStyles.helpBox);
+					GUILayout.BeginVertical();
+					GUILayout.BeginHorizontal(EditorStyles.helpBox);
 
-					GUILayout.Label("Meshes: OBJ | Textures: PNG");
-					if(GUILayout.Button("Export Atlas", GUILayout.ExpandWidth(true), GUILayout.Height(37)))
+					if (GUILayout.Button("3D", GUILayout.ExpandWidth(false)))
 					{
-						MA_TextureAtlasserProUtils.ExportAtlas(curWindow.textureAtlas);
+						exportObjDefault = true;
+						exportPngDefault = true;
+						exportSprite = false;
+						exportSliceSprite = false;
 					}
 
+					if (GUILayout.Button("2D", GUILayout.ExpandWidth(false)))
+					{
+						exportObjDefault = false;
+						exportPngDefault = true;
+						exportSprite = true;
+						exportSliceSprite = true;
+					}
+
+					GUILayout.EndHorizontal();
+
+					GUILayout.Label("Meshes:");
+					exportObjDefault = GUILayout.Toggle(exportObjDefault, "OBJ default.");
+
+					GUILayout.Label("Textures:");
+					GUILayout.BeginHorizontal();
+					exportPngDefault = GUILayout.Toggle(exportPngDefault, "PNG default.");
+					if(exportPngDefault)
+					{
+						exportSprite = GUILayout.Toggle(exportSprite, "Sprite.");
+						if (exportSprite)
+						{
+							exportSliceSprite = GUILayout.Toggle(exportSliceSprite, "Slice sprites.");
+						}
+					}
+					GUILayout.FlexibleSpace();
+					GUILayout.EndHorizontal();
+
+					GUILayout.BeginHorizontal(EditorStyles.helpBox);
+
+					if (GUILayout.Button("Export", GUILayout.ExpandWidth(true), GUILayout.Height(37)))
+					{
+						if(exportObjDefault)
+						{
+							MA_TextureAtlasserProUtils.ExportAtlasMeshesObj(curWindow.textureAtlas);
+						}
+
+						if(exportPngDefault)
+						{
+							if(exportSprite)
+							{
+								MA_TextureAtlasserProUtils.ExportAtlasSpritesPNG(curWindow.textureAtlas, exportSliceSprite);
+							}
+							else
+							{
+								MA_TextureAtlasserProUtils.ExportAtlasTexturesPNG(curWindow.textureAtlas);
+							}
+						}
+					}
+
+					GUILayout.EndHorizontal();
 					GUILayout.EndVertical();
 				}
 				else if(curWindow == null)

MA_ToolBox/MA_Utilities/TextureUtils/MA_TextureUtils.cs

@@ -155,6 +155,30 @@ namespace MA_Texture
 
             return texture;
         }
+
+		public static Texture2D MA_Scale32D(this Texture2D texture, int width, int height)
+		{
+			float ratioWidth = (float)width / texture.width;
+			float ratioHeight = (float)height / texture.height;
+
+			Texture2D newTexture = new Texture2D(width, height);
+
+			for (int x = 0; x < width; x++)
+			{
+				int posX = Mathf.FloorToInt(x / ratioWidth);
+				for (int y = 0; y < height; y++)
+				{
+					int posY = Mathf.FloorToInt(y / ratioHeight);
+					Color pixel = texture.GetPixel(posX, posY);
+					newTexture.SetPixel(x, y, new Color(pixel.r, pixel.g, pixel.b, pixel.a));
+				}
+			}
+
+			newTexture.name = texture.name;
+
+			newTexture.Apply();
+			return newTexture;
+		}
         #endregion
 
         #region combine

README.md

@@ -1,13 +1,21 @@
-[![Github All Releases](https://img.shields.io/github/downloads/maxartz15/MA_TextureAtlasser/total.svg)]() 
-
 # MA_TextureAtlasser
 Texture atlas creator for Unity
 
-You can combine textures and/or remap the UV’s for the 3D models.
-By having full control over the size and position of the textures that are being placed in the atlas you will never stand for surprises when exporting. This will cost some more time than auto-generating your texture atlases but you know whats going on and which models/textures are getting priority.
+[![Image](https://maxartz15.com/wp-content/uploads/2019/04/MA_TextureAtlas.png)]()
 
-https://youtu.be/PBRKlopkZP0
+You can combine textures and/or remap the UV’s for the 3D models.
+By having full control over the size and position of the textures that are being placed in the atlas you will never stand for surprises when exporting. This will cost some more time than auto-generating your texture atlases but you know whats going on and which models/textures are getting priority. The tool can also be used to make 2D sprite sheets.
+
+- Combine textures/sprites.
+- Automatically adjusts the UV's of the assigned meshes to match the new texture atlas.
+- Exports meshes as OBJ.
+- Exports texture atlas as PNG.
+- Exports texture atlas as a (sliced) sprite sheet.
+
+[Example video](https://youtu.be/PBRKlopkZP0)
 
 Download the UnityPackage here: https://github.com/maxartz15/MA_TextureAtlasser/releases
 
-For more information: https://maxartz15.com/ma_textureatlas/
+[![Github All Releases](https://img.shields.io/github/downloads/maxartz15/MA_TextureAtlasser/total.svg)]()
+
+For more information: https://maxartz15.com/ma_textureatlas/