批量处理Unity中的图片资源

using UnityEngine;
using UnityEditor;
// /////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Batch Texture import settings modifier.
//
// Modifies all selected textures in the project window and applies the requested modification on the 
// textures. Idea was to have the same choices for multiple files as you would have if you open the 
// import settings of a single texture. Put this into Assets/Editor and once compiled by Unity you find
// the new functionality in Custom -> Texture. Enjoy! :-)
// 
// Based on the great work of benblo in this thread: 
// http://forum.unity3d.com/viewtopic.php?t=16079&start=0&postdays=0&postorder=asc&highlight=textureimporter
// 
// Developed by Martin Schultz, Decane in August 2009
// e-mail: ms@decane.net
//
// Updated for Unity 3.0 by col000r in August 2010
// http://col000r.blogspot.com
//
// /////////////////////////////////////////////////////////////////////////////////////////////////////////
public class ChangeTextureImportSettingsUnity3 : ScriptableObject
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    [MenuItem("Custom/Texture/Normal Format")]
    static void NormalFormat()
    ｛
        ChangeTextureFormat_AutoTruecolor ();
        ChangeMipMap_Off ();
        SelectedChangeMaxTextureSize (1024);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/Auto Compressed")]
    static void ChangeTextureFormat_AutoCompressed()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticCompressed);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/Auto 16bit")]
    static void ChangeTextureFormat_Auto16Bit()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.Automatic16bit);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/Auto Truecolor")]
    static void ChangeTextureFormat_AutoTruecolor()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticTruecolor);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB Compressed DXT1")]
    static void ChangeTextureFormat_RGB_DXT1()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT1);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB Compressed DXT5")]
    static void ChangeTextureFormat_RGB_DXT5()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT5);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB 16 bit")]
    static void ChangeTextureFormat_RGB_16bit()
    ｛
        SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB16);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB 24 bit")]
    static void ChangeTextureFormat_RGB_24bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB24);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/Alpha 8 bit")]
    static void ChangeTextureFormat_Alpha_8bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.Alpha8);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/ARGB 16 bit")]
    static void ChangeTextureFormat_RGBA_16bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB16);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGBA 32 bit")]
    static void ChangeTextureFormat_RGBA_32bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.RGBA32);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/ARGB 32 bit")]
    static void ChangeTextureFormat_ARGB_32bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB32);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB PVRTC 2bit")]
    static void ChangeTextureFormat_RGB_PVRTC_2bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB2);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGBA PVRTC 2bit")]
    static void ChangeTextureFormat_RGBA_PVRTC_2bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA2);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGB PVRTC 4bit")]
    static void ChangeTextureFormat_RGB_PVRTC_4bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB4);
    ｝
    [MenuItem("Custom/Texture/Change Texture Format/RGBA PVRTC 4bit")]
    static void ChangeTextureFormat_RGBA_PVRTC_4bit()
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        SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA4);
    ｝
    // ----------------------------------------------------------------------------
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/32")]
    static void ChangeTextureSize_32()
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        SelectedChangeMaxTextureSize(32);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/64")]
    static void ChangeTextureSize_64()
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        SelectedChangeMaxTextureSize(64);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/128")]
    static void ChangeTextureSize_128()
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        SelectedChangeMaxTextureSize(128);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/256")]
    static void ChangeTextureSize_256()
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        SelectedChangeMaxTextureSize(256);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/512")]
    static void ChangeTextureSize_512()
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        SelectedChangeMaxTextureSize(512);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/1024")]
    static void ChangeTextureSize_1024()
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        SelectedChangeMaxTextureSize(1024);
    ｝
    [MenuItem("Custom/Texture/Change Texture Size/Change Max Texture Size/2048")]
    static void ChangeTextureSize_2048()
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        SelectedChangeMaxTextureSize(2048);
    ｝
    // ----------------------------------------------------------------------------
    [MenuItem("Custom/Texture/Change MipMap/Enable MipMap")]
    static void ChangeMipMap_On()
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        SelectedChangeMimMap(true);
    ｝
    [MenuItem("Custom/Texture/Change MipMap/Disable MipMap")]
    static void ChangeMipMap_Off()
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        SelectedChangeMimMap(false);
    ｝
    // ----------------------------------------------------------------------------
    [MenuItem("Custom/Texture/Change Non Power of 2/None")]
    static void ChangeNPOT_None()
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        SelectedChangeNonPowerOf2(TextureImporterNPOTScale.None);
    ｝
    [MenuItem("Custom/Texture/Change Non Power of 2/ToNearest")]
    static void ChangeNPOT_ToNearest()
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        SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToNearest);
    ｝
    [MenuItem("Custom/Texture/Change Non Power of 2/ToLarger")]
    static void ChangeNPOT_ToLarger()
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        SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToLarger);
    ｝
    [MenuItem("Custom/Texture/Change Non Power of 2/ToSmaller")]
    static void ChangeNPOT_ToSmaller()
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        SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToSmaller);
    ｝
    // ----------------------------------------------------------------------------
    [MenuItem("Custom/Texture/Change Is Readable/Enable")]
    static void ChangeIsReadable_Yes()
    ｛
        SelectedChangeIsReadable(true);
    ｝
    [MenuItem("Custom/Texture/Change Is Readable/Disable")]
    static void ChangeIsReadable_No()
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        SelectedChangeIsReadable(false);
    ｝
    // ----------------------------------------------------------------------------
    static void SelectedChangeIsReadable(bool enabled)
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        Object[] textures = GetSelectedTextures();
        Selection.objects = new Object[0];
        foreach (Texture2D texture in textures)
        ｛
            string path = AssetDatabase.GetAssetPath(texture);
            TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
            textureImporter.isReadable = enabled;
            AssetDatabase.ImportAsset(path);
        ｝
    ｝
    static void SelectedChangeNonPowerOf2(TextureImporterNPOTScale npot)
    ｛
        Object[] textures = GetSelectedTextures();
        Selection.objects = new Object[0];
        foreach (Texture2D texture in textures)
        ｛
            string path = AssetDatabase.GetAssetPath(texture);
            TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
            textureImporter.npotScale = npot;
            AssetDatabase.ImportAsset(path);
        ｝
    ｝
    static void SelectedChangeMimMap(bool enabled)
    ｛
        Object[] textures = GetSelectedTextures();
        Selection.objects = new Object[0];
        foreach (Texture2D texture in textures)
        ｛
            string path = AssetDatabase.GetAssetPath(texture);
            TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
            textureImporter.mipmapEnabled = enabled;
            AssetDatabase.ImportAsset(path);
        ｝
    ｝
    static void SelectedChangeMaxTextureSize(int size)
    ｛
        Object[] textures = GetSelectedTextures();
        Selection.objects = new Object[0];
        foreach (Texture2D texture in textures)
        ｛
            string path = AssetDatabase.GetAssetPath(texture);
            TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
            textureImporter.maxTextureSize = size;
            AssetDatabase.ImportAsset(path);
        ｝
    ｝
    static void SelectedChangeTextureFormatSettings(TextureImporterFormat newFormat)
    ｛
        Object[] textures = GetSelectedTextures();
        Selection.objects = new Object[0];
        foreach (Texture2D texture in textures)
        ｛
            string path = AssetDatabase.GetAssetPath(texture);
            //Debug.Log("path: " + path);
            TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
            textureImporter.textureFormat = newFormat;
            AssetDatabase.ImportAsset(path);
        ｝
    ｝
    static Object[] GetSelectedTextures()
    ｛
        return Selection.GetFiltered(typeof(Texture2D), SelectionMode.DeepAssets);
    ｝
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