void StartSampleClip(short clipIdx)
{
_isSampling = true;
if (_sampleParam != null)
{
_sampleParam.aniState.enabled = false;
}
AnimationClip clip = _clips[clipIdx];
_sampleParam = new SampleParam();
_sampleParam.clipIdx = clipIdx;
_sampleParam.clip = clip;
AnimationState aniState = _animation[clip.name];
aniState.enabled = true;
aniState.weight = 1;
aniState.normalizedTime = 0f;
aniState.speed = 1f;
_sampleParam.aniState = aniState;
_sampleParam.frameRate = SAMPLER_FRAME_RATE;
_sampleParam.frameCount = (short)(clip.length * SAMPLER_FRAME_RATE);
_sampleParam.currFrameIdx = 0;
GetAnimationCurves();
transform.parent = null;
transform.position = Vector3.zero;
transform.rotation = Quaternion.identity;
transform.localScale = Vector3.one;
foreach (var boneData in _allBoneDatas)
{
boneData.matrixes[_sampleParam.clipIdx] = new Matrix4x4[_sampleParam.frameCount];
}
foreach (var jointData in _allJointDatas)
{
jointData.matrixes[_sampleParam.clipIdx] = new PosRot[_sampleParam.frameCount];
}
_rootMotionData.matrixes[_sampleParam.clipIdx] = new PosRot[_sampleParam.frameCount];
_sampleParams.Add(_sampleParam);
Debug.LogFormat("<color=yellow>Start sample clip <{0}>[{1}],length:{2},frameRate:{3},frameCount:{4}</color>", clip.name, clipIdx, clip.length, _sampleParam.frameRate, _sampleParam.frameCount);
}
private void WriteToFile()
{
string savePath = string.Format("{0}{1}.asset", SKINNING_DATA_SAVE_DIR, transform.name);
SkinningData skinningData = AssetDatabase.LoadAssetAtPath <SkinningData>(savePath);
if (skinningData == null)
{
skinningData = ScriptableObject.CreateInstance <SkinningData>();
skinningData.name = transform.name;
AssetDatabase.CreateAsset(skinningData, savePath);
}
skinningData.frameRate = SAMPLER_FRAME_RATE;
skinningData.boneInfos = GetBoneInfos();
skinningData.clipInfos = new BakedClipInfo[_sampleParams.Count];
Vector2 texSize = CalcTextureSize();
Texture2D tex = new Texture2D((int)texSize.x, (int)texSize.y, TextureFormat.RGBAHalf, false, true);
Color[] pixels = tex.GetPixels();
int pixelIdx = 0;
/*
* layout: Clip -> FrameIdx -> Bone，存储完某一帧内所有骨头再存下一帧，原因是同一帧内数据相互靠近可以提高显存 cache 命中率
* 简化存储可以使用 Dual Quaternion 或者只存储位移和旋转，然后在 shader 里还原(可能会耗费一定性能)
*/
for (int i = 0; i < _sampleParams.Count; i++)
{
SampleParam sampleParam = _sampleParams[i];
BakedClipInfo clipData = new BakedClipInfo();
int frameCnt = sampleParam.frameCount;
clipData.name = sampleParam.clip.name;
clipData.frameCount = sampleParam.frameCount;
clipData.duration = sampleParam.clip.length;
clipData.wrapMode = sampleParam.clip.wrapMode;
clipData.localBounds = sampleParam.clip.localBounds;
clipData.clipPixelOffset = pixelIdx;
clipData.frameRate = skinningData.frameRate; // TODO 先临时复制一下全局帧率
clipData.curveDatas = _curveDatas[i];
skinningData.clipInfos[i] = clipData;
for (int j = 0; j < frameCnt; j++)
{
foreach (var boneData in _allBoneDatas)
{
if (boneData.isJoint)
{
continue;
}
Matrix4x4 matrix = boneData.matrixes[i][j];
// 去掉第四行(0,0,0,1)
//matrix.GetRow(0);
pixels[pixelIdx++] = new Color(matrix.m00, matrix.m01, matrix.m02, matrix.m03);
pixels[pixelIdx++] = new Color(matrix.m10, matrix.m11, matrix.m12, matrix.m13);
pixels[pixelIdx++] = new Color(matrix.m20, matrix.m21, matrix.m22, matrix.m23);
}
}
}
tex.SetPixels(pixels);
tex.Apply();
skinningData.width = (short)texSize.x;
skinningData.height = (short)texSize.y;
skinningData.bakedBoneDatas = tex.GetRawTextureData();
/*
* save joints and rootMotion
*/
//skinningData.jointNames = _allJointDatas.Select(jointData => jointData.transform.name).ToArray();
skinningData.bakedJointDatas = new List <JointClipData>(); //new PosRot[_clips.Length][][];
skinningData.rootMotions = new List <RootMotionClipData>(); //new PosRot[_clips.Length][];
int jointCount = _allJointDatas.Count;
for (int i = 0; i < _sampleParams.Count; i++)
{
SampleParam sampleParam = _sampleParams[i];
int frameCnt = sampleParam.frameCount;
skinningData.bakedJointDatas.Add(new JointClipData());
skinningData.bakedJointDatas[i].clipName = sampleParam.clip.name;
skinningData.rootMotions.Add(new RootMotionClipData());
for (int j = 0; j < frameCnt; j++)
{
skinningData.bakedJointDatas[i].frameData.Add(new JointFrameData());
for (int k = 0; k < jointCount; k++)
{
skinningData.bakedJointDatas[i].frameData[j].jointData.Add(_allJointDatas[k].matrixes[i][j]);
}
skinningData.rootMotions[i].data.Add(_rootMotionData.matrixes[i][j]);
}
}
/*
* save animation events
*/
for (int i = 0; i < _sampleParams.Count; i++)
{
SampleParam sampleParam = _sampleParams[i];
AnimationEvent[] aniEvents = sampleParam.clip.events;
EventInfo[] events = new EventInfo[aniEvents.Length];
for (int j = 0; j < aniEvents.Length; j++)
{
events[j] = new EventInfo(aniEvents[j]);
}
skinningData.clipInfos[i].events = events;
}
EditorUtility.SetDirty(skinningData);
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}