[Unity优化]UPR资源优化：Animation

参考链接：

https://blog.csdn.net/u013917120/article/details/79824448

https://www.jianshu.com/p/fd9538413907/

https://www.cnblogs.com/msxh/p/14090805.html

资源优化规则：https://upr.unity.com/instructions/assetchecker#UserManual

Animation优化规则：

注意点：

1.fbx中的动画是只读的，因此需要将fbx中的动画提取出来，这样才能对动画进行编辑

2.通过减少动画曲线精度，可以提高存储效果，从而达到减少内存占用的目的

3.去掉缩放曲线，也可以减少内存占用

代码如下：

using UnityEditor;
using UnityEngine;
using System.Collections.Generic;

public class OptimizeEditor
{
    private static string artDir = "Assets/Art";

    [MenuItem("Tools/优化/动画优化")]
    private static void OptimizeAnimation()
    {
        List<AnimationClip> animationClipList = EditorHelper.GetAssetsByFolders<AnimationClip>("t:AnimationClip", new string[] { artDir });
        for (int i = 0; i < animationClipList.Count; i++)
        {
            AnimationClip animationClip = animationClipList[i];
            EditorCurveBinding[] editorCurveBindings = AnimationUtility.GetCurveBindings(animationClip);
            for (int j = 0; j < editorCurveBindings.Length; j++)
            {
                EditorCurveBinding editorCurveBinding = editorCurveBindings[i];

                //删减帧
                if (editorCurveBinding.propertyName.ToLower().Contains("scale"))
                {
                    AnimationUtility.SetEditorCurve(animationClip, editorCurveBinding, null);
                }

                //精度压缩
                AnimationCurve animationCurve = AnimationUtility.GetEditorCurve(animationClip, editorCurveBinding);
                if (animationCurve != null)
                {
                    Keyframe[] keyframes = animationCurve.keys;
                    for (int k = 0; k < keyframes.Length; k++)
                    {
                        Keyframe keyframe = keyframes[k];
                        keyframe.value = float.Parse(keyframe.value.ToString("f3"));
                        keyframe.inTangent = float.Parse(keyframe.inTangent.ToString("f3"));
                        keyframe.outTangent = float.Parse(keyframe.outTangent.ToString("f3"));
                        keyframes[k] = keyframe;
                    }
                    animationCurve.keys = keyframes;

                    AnimationUtility.SetEditorCurve(animationClip, editorCurveBinding, animationCurve);
                }
            }
        }
    }
}