Unity's 2D Atlas processing, and cutting out a small picture

(Reproduced Please specify Source: http://blog.csdn.net/hongyouwei/article/details/45011315)

When we look for resources, sometimes encounter the kind of put a bunch of pictures into a PNG picture inside the situation, in doing 2D games, we often need to be inside a block of small picture cutting out to use, then the problem comes, how to cut it, now we provide a small picture, to show you:

So now we're going to import the picture into unity, select the image and you'll see the inspector interface above.

Then, select the texture type as advanced, such as:

Select the Read/write enabled, and then the sprite mode selects multiple, such as. Then click on the Sprite Editor to enter the graphical clipping interface:

Click on the upper left corner of the slice, in the upper right of the figure above I here type Select Grid, you can also choose automatic because I want to get three grid, so I am here the pixel is x:150 y:200, other regardless, directly click Slice, enter the following interface, Then select each grid and make adjustments so that it fits exactly with its boundary, such as:

Then click Apply on the top of the menu to get a cut-off atlas. Now this atlas, can be directly dragged out of the use, but if you want to quickly get inside a picture of Zhang, next to introduce a simple editor extension, which I inadvertently, in the bar to see someone use, come out and share with everyone.

First, in the Unity Project window under the assets Create a folder name editor, and then create a script inside, name casually, I named here: Imageslicer, the next is to open the script to encode, here I directly paste the code, Then you can select the image, enter the assets directory, select Imageslider/process to Sprites, and then you can get a folder, there is a small picture of a picture, and now paste the code and cut the results of the picture:

Using unityengine;using system.collections;using unityeditor;using system.io;using System.Collections.Generic; public static Class Imageslicer{[menuitem ("Assets/imageslicer/process to Sprites")]static void Processtosprite () { Texture2d image = Selection.activeobject as texture2d;//gets the rotated object string rootpath = Path.getdirectoryname ( Assetdatabase.getassetpath (image));//Gets the path name string path = RootPath + "/" + Image.name + ". PNG ";//Picture path name Textureimporter teximp = Assetimporter.getatpath (path) as textureimporter;// Get Picture Entry Assetdatabase.createfolder (RootPath, image.name);//Create folder foreach (Spritemetadata metaData in Teximp.spritesheet)//Traverse small Atlas {texture2d myimage = new Texture2d ((int) metaData.rect.width, (int) metaData.rect.height); /abc_0: (x:2.00, y:400.00, width:103.00, height:112.00) for (int y = (int) metadata.rect.y; y < Metadata.rect.y + metaData . rect.height; y++)//y axis pixels {for (int x = (int) metadata.rect.x; x < Metadata.rect.x + metaData.rect.width; + +) myimage. SetPixel (x-(int) metadata.rect.x, y-(int) Metadata.rect.y, image. GetPixel (x, y));} Convert textures to encodetopng compatible format if (Myimage.format! = Textureformat.argb32 && Myimage.format! = textureformat.rgb24) { Texture2d newtexture = new Texture2d (myimage.width, myimage.height); Newtexture.setpixels (MyImage. Getpixels (0), 0); myimage = Newtexture;} var pngdata = myimage. Encodetopng ();//assetdatabase.createasset (myimage, RootPath + "/" + Image.name + "/" + Metadata.name + ". PNG "); File.writeallbytes (RootPath + "/" + Image.name + "/" + Metadata.name + ". PNG ", pngdata);//Refresh Resource Window interface Assetdatabase.refresh ();}}}

Unity's 2D Atlas processing, and cutting out a small picture