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最近写了一个有意思的工具，能够自动切割fbx中的动画信息，如下图所示：
本来不想造轮子，从晚上查找一番，发现并没有自己满意的工具，只好自己出手啦。
核心代码如下：
[MenuItem("liubo/自动切割骨骼动画2")]public static void AutoClip2(){AutoClip2Impl("");}static void AutoClip2Impl(string spec){/** 读取excel表，获取动画的信息：名字，起始帧，结束帧* 再读取fbx的动画信息，对名字相同的进行信息merge* merge：起始帧，结束帧* 保留：event信息，mask信息，curve信息* 如果有新加的，那么加入新的信息* **/// 匿名函数System.Func<bool, ConfigLine, SerializedProperty, int> SetPropertyFunction = delegate(bool IsHumanClip, ConfigLine csv_line, SerializedProperty sp){sp.FindPropertyRelative("firstFrame").floatValue = csv_line.GetColumnUnsafe<float>("firstFrame");sp.FindPropertyRelative("lastFrame").floatValue = csv_line.GetColumnUnsafe<float>("lastFrame");// LoopTime, LoopPosesp.FindPropertyRelative("loopTime").boolValue = csv_line.GetColumnUnsafe<int>("loopTime") > 0;sp.FindPropertyRelative("loopBlend").boolValue = csv_line.GetColumnUnsafe<int>("loopBlend") > 0;// Rotation_BakeIntoPose, Rotation_BaseUponsp.FindPropertyRelative("loopBlendOrientation").boolValue = csv_line.GetColumnUnsafe<int>("loopBlendOrientation") > 0;sp.FindPropertyRelative("keepOriginalOrientation").boolValue = csv_line.GetColumnUnsafe<int>("keepOriginalOrientation") == 0;// PositionY_BakeIntoPose, PositionY_BaseUponsp.FindPropertyRelative("loopBlendPositionY").boolValue = csv_line.GetColumnUnsafe<int>("loopBlendPositionY") > 0;if (IsHumanClip){// 如果是humanoid类型的动画，那么keepOriginalPositionY的取值为0，1，2三种。sp.FindPropertyRelative("keepOriginalPositionY").boolValue = csv_line.GetColumnUnsafe<int>("keepOriginalPositionY") == 0;sp.FindPropertyRelative("heightFromFeet").boolValue = csv_line.GetColumnUnsafe<int>("keepOriginalPositionY") == 2;}else{sp.FindPropertyRelative("keepOriginalPositionY").boolValue = csv_line.GetColumnUnsafe<int>("keepOriginalPositionY") == 0;}// PositionXZ_BakeIntoPose, PositionXZ_BaseUponsp.FindPropertyRelative("loopBlendPositionXZ").boolValue = csv_line.GetColumnUnsafe<int>("loopBlendPositionXZ") > 0;sp.FindPropertyRelative("keepOriginalPositionXZ").boolValue = csv_line.GetColumnUnsafe<int>("keepOriginalPositionXZ") == 0;return 0;};// 读取excelstring[] files = Directory.GetFiles(Application.dataPath, "animations*.xls", SearchOption.AllDirectories);foreach (var fileName in files){DateTime excelTime = File.GetLastWriteTime(fileName);Debug.Log("读取xls文件：" + fileName + ", file-write-time=" + excelTime.ToString());Dictionary<string, ConfigFile> excels = ReadXML(fileName);// ReadXML(Application.dataPath + "/Art/animations.xls");foreach (var it in excels){if (string.IsNullOrEmpty(spec) || spec == it.Key){}else{// 不处理啦。continue;}Debug.Log("处理：" + it.Key);ConfigFile csv = it.Value;string[] assets = AssetDatabase.FindAssets(it.Key, new string[] { "Assets/Art" });if (assets.Length > 0){string asset = AssetDatabase.GUIDToAssetPath(assets[0]);// 如果.meta时间和excel时间不一样，说明有变化，否则没变化的就直接跳过DateTime assetMetaTime = File.GetLastWriteTime(asset + ".meta");if (DateTime.Equals(assetMetaTime, excelTime)){// 文件没有变化，不处理Debug.Log("文件没有变化，不处理啦：" + asset);continue;}File.SetLastWriteTime(asset + ".meta", excelTime);ModelImporter modelImporter = (ModelImporter)AssetImporter.GetAtPath(asset);SerializedObject serializedObject = modelImporter == null ? null : new SerializedObject(modelImporter);ModelImporterAnimationType m_AnimationType = (ModelImporterAnimationType)serializedObject.FindProperty("m_AnimationType").intValue;bool IsHumanClip = m_AnimationType == ModelImporterAnimationType.Human;HashSet<string> processed_clip = new HashSet<string>();if (serializedObject == null){Debug.Log("无法处理该文件：" + asset);}else{// 压缩方式serializedObject.FindProperty("m_AnimationCompression").intValue = (int)ModelImporterAnimationCompression.Optimal;// 切割或者merge动画SerializedProperty m_ClipAnimations = serializedObject.FindProperty("m_ClipAnimations");for (int i = 0; i < m_ClipAnimations.arraySize; i++){SerializedProperty sp = m_ClipAnimations.GetArrayElementAtIndex(i);string clip_name = sp.FindPropertyRelative("name").stringValue;if (clip_name.Contains("@")){clip_name = clip_name.Substring(clip_name.LastIndexOf("@") + 1);}ConfigLine csv_line = csv.FindData(clip_name);if (csv_line != null){processed_clip.Add(clip_name);// merge基本属性SetPropertyFunction(IsHumanClip, csv_line, sp);// 其他属性，如event，mask，都不处理，保持原来信息}}// 把剩下没处理的内容，作为新的动画，分割到fbx中Dictionary<string, ConfigLine> csv_data = csv.GetLines();foreach (var kt in csv_data){if (processed_clip.Contains(kt.Key)){continue;}processed_clip.Add(kt.Key);ConfigLine csv_line = kt.Value;m_ClipAnimations.InsertArrayElementAtIndex(m_ClipAnimations.arraySize);SerializedProperty sp = m_ClipAnimations.GetArrayElementAtIndex(m_ClipAnimations.arraySize - 1);sp.FindPropertyRelative("name").stringValue = it.Key + "@" + kt.Key;sp.FindPropertyRelative("takeName").stringValue = "Take 001";// 处理基本属性SetPropertyFunction(IsHumanClip, csv_line, sp);// 设置maskUnityEditorInternal.AvatarMask mask = new UnityEditorInternal.AvatarMask();mask.transformCount = modelImporter.transformPaths.Length;for (int i = 0; i < modelImporter.transformPaths.Length; i++){mask.SetTransformPath(i, modelImporter.transformPaths[i]);mask.SetTransformActive(i, true);}SerializedProperty bodyMask = sp.FindPropertyRelative("bodyMask");if (bodyMask != null && bodyMask.isArray){for (int i = 0; i < mask.humanoidBodyPartCount; i++){if (i >= bodyMask.arraySize) bodyMask.InsertArrayElementAtIndex(i);bodyMask.GetArrayElementAtIndex(i).intValue = mask.GetHumanoidBodyPartActive(i) ? 1 : 0;}}SerializedProperty transformMask = sp.FindPropertyRelative("transformMask");//ModelImporter.UpdateTransformMask(mask, transformMask);Type ty = typeof(ModelImporter);MethodInfo mi = ty.GetMethod("UpdateTransformMask", BindingFlags.Static | BindingFlags.NonPublic);if (mi != null){mi.Invoke(null, new object[] { mask, transformMask });}else{Debug.LogError("无法找到此方法！");}}serializedObject.ApplyModifiedProperties();AssetDatabase.WriteImportSettingsIfDirty(asset);AssetDatabase.ImportAsset(asset);}}else{Debug.LogError("无法找到这个FBX文件：" + it.Key);}}}}static void ShowProperties(SerializedProperty sp){SerializedProperty backup = sp.Copy();{sp = backup.Copy();Debug.Log("[显示属性] sp.name=" + sp.displayName + ", " + sp.name);sp.Next(true);do{Debug.Log("[显示属性] sp.name=" + sp.displayName + ", " + sp.name);} while (sp.Next(false));}}
简单说明一下，需要攻克的问题就是，找到ModelImporter的属性信息，我是咋找到的呢，看对应的meta文件，以及...（次数省略三个字）。不过话说回来，meta文件中的信息很丰富，再加上自己写的ShowProperties函数，基本上都能猜到，有点站着说话不腰疼的感觉，哈哈。
其实，这些属性在meta中都能找到
我只能说，我设置过属性，但是不知道怎么，他并没有导出到meta中，所以就用了这段代码
serializedObject.FindProperty("m_AnimationCompression").intValue = (int)ModelImporterAnimationCompression.Optimal;
最开始，没有研究Property的时候，采用了很直接的方法，如下所示。这段代码带来的危害就是，无法进行merge旧的meta文件，会导致event和mask丢失。
[MenuItem("liubo/自测/自动切割骨骼动画")]public static void AutoClip(){string path = Selection.activeObject == null ? "" : AssetDatabase.GetAssetPath(Selection.activeObject);Debug.Log("[切割动画] path=" + path);ModelImporter mi = AssetImporter.GetAtPath(path) as ModelImporter;if (mi == null){Debug.Log("[切割动画] 没找到FBX文件！ path=" + path);}else{Debug.Log("[切割动画] 开始切割：path=" + path);// 注意保留就动画的一些数据，比如绑定的eventList<ModelImporterClipAnimation> oldClips = new List<ModelImporterClipAnimation>();List<ModelImporterClipAnimation> newClips = new List<ModelImporterClipAnimation>();if (mi.clipAnimations != null){oldClips.AddRange(mi.clipAnimations);}#if true//TEST//AnimationUtility.GetAnimationClipSettings(null);ModelImporterClipAnimation test = new ModelImporterClipAnimation();test.name = "test";test.takeName = "auto";test.firstFrame = 0;test.lastFrame = 30;test.wrapMode = WrapMode.Default;test.keepOriginalPositionY = true;test.loop = false;test.loopTime = false;test.loopPose = false;test.keepOriginalOrientation = false;test.keepOriginalPositionY = false;test.keepOriginalPositionXZ = false;test.cycleOffset = 0;test.heightOffset = 0;test.rotationOffset = 0;newClips.Add(test);newClips.AddRange(oldClips);#endifmi.clipAnimations = newClips.ToArray();EditorUtility.SetDirty(Selection.activeObject);}}
unity工程链接：https://github.com/badforlabor/test2 中的auto_split_animation
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原文地址：http://www.cnblogs.com/badforlabor/p/5458814.html
