下图中Rotation.z的前4个关键帧[0, 3]（即15帧, 30帧, 45帧, 60帧），值都没变；
(3, 4)Rotation.z变为60（即61帧到90帧）；
后3个关键帧[5, 7]一直维持在60没变。
可以分析下：前4个关键帧，[1, 2]删除对动画没影响，后3个关键帧[5, 7]删除对动画也没影响。
public class AnimClipCurveOptWnd : EditorWindow
{
[MenuItem("MyTools/Anim/AnimClipCurveOptWnd", false)]
static void ShowWindow()
{
var win = GetWindow(typeof(AnimClipCurveOptWnd), false, "AnimClipCurveOptWnd");
}
private Vector2 m_ScrollPos;
private AnimationClip m_Clip;
///对应AnimationWnd的一行轨道
private EditorCurveBinding[] m_CurveBindings;
///有动画的节点的路径
private List<string> m_PathList = new List<string>();
private Dictionary<string, List<string>> m_PathToPropNamesDict = new Dictionary<string, List<string>>();
private int m_PathOptionIndex;
private string[] m_PathOptions;
private int m_PropNameOptionIndex;
private string[] m_PropNameOptions;
///关键帧数据都保存在Curve.keys上
private AnimationCurve m_Curve;
private int m_CurveBindingIndex = -1;
private void OnEnable()
{
if (null != m_Clip && null == m_CurveBindings)
{
m_PathList.Clear();
m_PathToPropNamesDict.Clear();
m_CurveBindings = AnimationUtility.GetCurveBindings(m_Clip);
foreach (var b in m_CurveBindings)
{
if (!m_PathToPropNamesDict.TryGetValue(b.path, out var propNames))
{
propNames = new List<string>();
m_PathToPropNamesDict.Add(b.path, propNames);
m_PathList.Add(b.path);
}
}
}
}
private void OnGUI()
{
m_ScrollPos = EditorGUILayout.BeginScrollView(m_ScrollPos);
{
OnGUI_ScrollView();
}
EditorGUILayout.EndScrollView();
}
private void OnGUI_ScrollView()
{
var clip = (AnimationClip)EditorGUILayout.ObjectField("Clip", m_Clip, typeof(AnimationClip), false);
bool isClipChange = m_Clip != clip;
m_Clip = clip;
if (null != m_Clip)
{
if (GUILayout.Button($"Refresh"))
isClipChange = true;
if (GUILayout.Button("检测连续相同的帧"))
{
CheckAllNoChange();
}
if (m_NoChangeInfos.Count > 0)
{
if (GUILayout.Button("清除多余的连续相同帧数据"))
{
ClearAllNoChange();
}
}
}
bool isPathOptionChange = false;
if (isClipChange)
{
Debug.Log($"clip change");
isPathOptionChange = true;
m_CurveBindings = null;
m_NoChangeInfos.Clear();
m_NoChangeInfosPage = 0;
m_PathList.Clear();
m_PathToPropNamesDict.Clear();
m_PathOptionIndex = 0;
m_PathOptions = null;
m_PropNameOptionIndex = 0;
m_PropNameOptions = null;
if (null != m_Clip)
{
m_CurveBindings = AnimationUtility.GetCurveBindings(m_Clip);
foreach (var b in m_CurveBindings)
{
if (!m_PathToPropNamesDict.TryGetValue(b.path, out var propNames))
{
propNames = new List<string>();
m_PathToPropNamesDict.Add(b.path, propNames);
m_PathList.Add(b.path);
}
propNames.Add(b.propertyName);
}
m_PathOptions = m_PathList.ToArray();
for (int i = 0; i < m_PathList.Count; ++i)
{
var path = m_PathList[i];
if ("" == path)
m_PathOptions[i] = "Root";
else
m_PathOptions[i] = path.Replace("/", "\\");
}
}
}
if (null == m_Clip) return;
bool isPropNameOptionChange = false;
GUILayout.Space(10);
int pathOptionIndex = EditorGUILayout.Popup("path", m_PathOptionIndex, m_PathOptions);
if (isPathOptionChange || m_PathOptionIndex != pathOptionIndex)
{
Debug.Log($"PathOptionChange: {m_PathOptionIndex} -> {pathOptionIndex}");
m_PathOptionIndex = pathOptionIndex;
string path = m_PathList[pathOptionIndex];
var propNameList = m_PathToPropNamesDict[path];
m_PropNameOptions = propNameList.ToArray();
m_PropNameOptionIndex = 0;
isPropNameOptionChange = true;
}
int propNameOptionIndex = EditorGUILayout.Popup("propName", m_PropNameOptionIndex, m_PropNameOptions);
if (isPropNameOptionChange || m_PropNameOptionIndex != propNameOptionIndex)
{
Debug.Log($"PropNameOptionChange: {m_PropNameOptionIndex} -> {propNameOptionIndex}");
m_PropNameOptionIndex = propNameOptionIndex;
string path = m_PathList[pathOptionIndex];
UpdateCurBindingIndexAndCurve(m_Clip, path, m_PropNameOptionIndex);
}
if (null != m_Curve)
{
GUILayout.Space(10);
EditorGUILayout.CurveField(m_Curve, GUILayout.Height(100));
Keyframe[] keyFrames = m_Curve.keys;
EditorGUILayout.LabelField("所有关键帧:");
EditorGUILayout.BeginVertical("box");
for (int i = 0; i < keyFrames.Length; ++i)
{
var kf = keyFrames[i];
EditorGUILayout.LabelField($"{i} -> t: {kf.time}, v: {kf.value}, 帧: {Utils.TrimFloat2(m_Clip.frameRate * kf.time)}");
}
EditorGUILayout.EndVertical();
}
if (m_NoChangeInfos.Count > 0)
{
GUILayout.Space(10);
EditorGUILayout.LabelField($"连续相同的帧信息:");
EditorGUILayout.BeginVertical("box");
for (int i = 0; i < 10; ++i)
{
int pageIndex = m_NoChangeInfosPage * 10 + i;
if (pageIndex >= m_NoChangeInfos.Count)
break;
var info = m_NoChangeInfos[pageIndex];
int lastFrameIndex = info.totalFrames - 1;
if ("" == info.binding.path)
EditorGUILayout.LabelField($"Root -> {info.binding.propertyName}, last:{lastFrameIndex}");
else
EditorGUILayout.LabelField($"{info.binding.path} -> {info.binding.propertyName}, last:{lastFrameIndex}");
for (int i2 = 0; i2 < info.frames.Count; i2 += 2)
{
int index1 = info.frames[i2];
int index2 = info.frames[i2+1];
if (index2 == lastFrameIndex)
EditorGUILayout.LabelField($"相同: [{index1}, {index2}], 可删除: [{index1+1}, {index2}]");
else
EditorGUILayout.LabelField($"相同: [{index1}, {index2}], 可删除: [{index1+1}, {index2-1}]");
}
}
int totalPage = Mathf.CeilToInt(m_NoChangeInfos.Count / 10.0f);
if (totalPage > 1)
{
EditorGUILayout.BeginHorizontal();
if (GUILayout.Button($"上一页"))
{
if (m_NoChangeInfosPage > 0)
m_NoChangeInfosPage--;
else
Debug.Log("first page");
}
if (GUILayout.Button($"下一页"))
{
if (m_NoChangeInfosPage < totalPage - 1)
m_NoChangeInfosPage++;
else
Debug.Log("last page");
}
GUILayout.Label($"({m_NoChangeInfosPage+1}/{totalPage})");
EditorGUILayout.EndHorizontal();
}
EditorGUILayout.EndVertical();
}
}
struct NoChangeInfo
{
public EditorCurveBinding binding;
public List<int> frames; // i, i+1的方式存放连续相同帧区间
public int totalFrames; //总帧数
}
private List<NoChangeInfo> m_NoChangeInfos = new List<NoChangeInfo>();
private int m_NoChangeInfosPage = 0;
private void ClearAllNoChange()
{
Undo.RecordObject(m_Clip, "opti");
foreach (var info in m_NoChangeInfos)
{
var curve = AnimationUtility.GetEditorCurve(m_Clip, info.binding);
int lastFrameIndex = curve.length - 1;
Debug.Log($"----- removeSameFrame: {info.binding.path} -> {info.binding.propertyName}");
for (int i = info.frames.Count - 2; i >= 0; i -= 2)
{
int index1 = info.frames[i];
int index2 = info.frames[i + 1];
if (index2 == lastFrameIndex)
{
Debug.Log($"[{index1 + 1}, {index2}]");
for (int j = index2; j > index1; --j)
curve.RemoveKey(j);
}
else
{
Debug.Log($"[{index1 + 1}, {index2 - 1}]");
for (int j = index2 - 1; j > index1; --j) //中间的帧全部删除
{
curve.RemoveKey(j);
}
}
}
Debug.Log($"-----");
AnimationUtility.SetEditorCurve(m_Clip, info.binding, curve);
}
var binding = m_CurveBindings[m_CurveBindingIndex];
m_Curve = AnimationUtility.GetEditorCurve(m_Clip, binding);
m_NoChangeInfos.Clear();
m_NoChangeInfosPage = 0;
AssetDatabase.SaveAssets(); //内存写到磁盘
//Repaint();
}
private void CheckAllNoChange()
{
m_NoChangeInfos.Clear();
m_NoChangeInfosPage = 0;
var list = new List<int>();
foreach (var b in m_CurveBindings)
{
var curve = AnimationUtility.GetEditorCurve(m_Clip, b);
Utils.CheckNoChangeFrames(curve, b, list);
if (list.Count > 0)
{
var info = new NoChangeInfo();
info.binding = b;
info.frames = list;
info.totalFrames = curve.length;
m_NoChangeInfos.Add(info);
list = new List<int>();
}
}
}
private void UpdateCurBindingIndexAndCurve(AnimationClip clip, string path, int propNameOptIndex)
{
m_CurveBindingIndex = -1;
m_Curve = null;
if (m_PropNameOptions.Length <= 0)
{
Debug.Log($"PropNameOptions len == 0");
return;
}
string propName = m_PropNameOptions[propNameOptIndex];
int index = 0;
foreach (var b in m_CurveBindings)
{
if (b.path == path)
{
if (b.propertyName == propName)
{
m_CurveBindingIndex = index;
m_Curve = AnimationUtility.GetEditorCurve(clip, b);
break;
}
}
index++;
}
}
}
public static class Utils
{
//保留2位小数
public static float TrimFloat2(float f1)
{
int i = (int)(f1 * 100);
float result = i / 100.0f;
return result;
}
//保留4位小数
public static float TrimFloat4(float f1)
{
int i = (int)(f1 * 10000);
float result = i / 10000.0f;
return result;
}
public static bool IsFloatEquals(float f1, float f2)
{
float delta = f1 - f2;
if (Mathf.Abs(delta) <= 0.0001f)
return true;
return false;
}
///两帧没有变化
public static bool IsFrameNoChange(Keyframe kf1, Keyframe kf2)
{
if (Utils.IsFloatEquals(kf1.value, kf2.value))
{
if (kf1.outTangent == 0 && kf2.inTangent == 0) //flat, 水平
return true;
if (float.IsInfinity(kf1.outTangent) || float.IsInfinity(kf2.inTangent))
return true;
}
return false;
}
public static void CheckNoChangeFrames(AnimationCurve curve, EditorCurveBinding binding, List<int> outList)
{
int index1 = -1;
//获取前面不变的帧下标和时间
var keys = curve.keys;
for (int i = 0; i < keys.Length - 1; ++i)
{
var kf1 = keys[i];
var kf2 = keys[i + 1];
if (-1 == index1) //找开始
{
if (IsFrameNoChange(kf1, kf2))
{
index1 = i;
}
}
else
{
if (!IsFrameNoChange(kf1, kf2))
{
int deltaFrame = i - index1;
if (deltaFrame <= 1)
{
//相邻帧相互的忽略
}
else
{
outList.Add(index1);
outList.Add(i);
}
index1 = -1;
}
}
}
if (-1 != index1)
{
outList.Add(index1);
outList.Add(keys.Length - 1);
}
}
}
标签：info,AnimationClip,删除,int,private,path,var,EditorGUILayout,优化 From： https://www.cnblogs.com/sailJs/p/18442561