Unity教程之-Unity3d中Sprite（精灵）的切割和导出

Unity中经常使用到精灵，尤其是2D游戏中制作动画等！今天我们就学习下精灵的切割和导出吧！

废话不多说，先建议空的工程。

1，打开Unity建工程，同时导入素材进行资源分类，工程不在于大小，这是我们对待它的态度！

 

2.开始分割精灵，三步走！

 

编辑精灵.

开始分割精灵

Apply一下，看下分割的精灵，0-9共9个。

贴精灵导出代码：

using UnityEngine;
using UnityEditor;
public class SpriteTailed:MonoBehaviour
{
[MenuItem( "Tools/导出精灵" )]
static void SaveSprite()
{
string resourcesPath = "Assets/Resources/" ;
foreach (Object obj in Selection.objects)
{
string selectionPath = AssetDatabase.GetAssetPath(obj);

// 必须最上级是"Assets/Resources/"
if (selectionPath.StartsWith(resourcesPath))
{
string selectionExt = System.IO.Path.GetExtension(selectionPath);
if (selectionExt.Length == 0)
{
continue ;
}

// 从路径"Assets/Resources/Sprite/number.png"得到路径"Sprite/number"
string loadPath = selectionPath.Remove(selectionPath.Length - selectionExt.Length);
loadPath = loadPath.Substring(resourcesPath.Length);

// 加载此文件下的所有资源
Sprite[] sprites = Resources.LoadAll(loadPath);
if (sprites.Length > 0)
{
Debug.Log(sprites.Length);
// 创建导出文件夹
string outPath = Application.dataPath + "/outSprite/" + loadPath;
System.IO.Directory.CreateDirectory(outPath);

foreach (Sprite sprite in sprites)
{
Debug.Log( "Export Sprite：" + sprite.name);
// 创建单独的纹理
Texture2D tex = new Texture2D(( int )sprite.rect.width, ( int )sprite.rect.height, sprite.texture.format, false );
tex.SetPixels(sprite.texture.GetPixels(( int )sprite.rect.xMin, ( int )sprite.rect.yMin,
( int )sprite.rect.width, ( int )sprite.rect.height));
tex.Apply();

// 写入成PNG文件
System.IO.File.WriteAllBytes(outPath + "/" + sprite.name + ".png" , tex.EncodeToPNG());
}
Debug.Log( "SaveSprite to " + outPath);
}
}
}
Debug.Log( "SaveSprite Finished" );
}
}

将脚本挂到MainCamera上，点击Tools/导出精灵：

OK，大功告成，好了，本篇unity3d教程关于Sprite精灵的切割和导出到此结束，下篇我们再会！