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03-UnrealEngine/Animation/UE5动画重定向笔记.md
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---
# ConvertAnimation()
主要逻辑位于`UAnimationEditorUtilityLibrary::ConvertAnimation()`或者`FIKRetargetBatchOperation::ConvertAnimation()`。
主要逻辑位于`UAnimationEditorUtilityLibrary::ConvertAnimation()`或者`FIKRetargetBatchOperation::ConvertAnimation()`。核心重定向逻辑为`UIKRetargetProcessor::RunRetargeter()`。
## RunRootRetarget()
FRootRetargeter::EncodePose():
取得输入的根骨骼Transform数据并给`FRootSource Source`赋值。
FRootRetargeter::DecodePose():
```c++
// InitialTransform 为重定向Pose计算出的数值，通过比值计算出Target的Current数值
const FTransform InitialTransform = SourceSkeleton.RetargetGlobalPose[Source.BoneIndex];
float InitialHeight = InitialTransform.GetTranslation().Z;
Source.InitialHeightInverse = 1.0f / InitialHeight;
Source.CurrentPositionNormalized = Source.CurrentPosition * Source.InitialHeightInverse;
// generate basic retarget root position by scaling the normalized position by root height
const FVector RetargetedPosition = Source.CurrentPositionNormalized * Target.InitialHeight;
```
## RunFKRetarget()
FChainEncoderFK::EncodePose():
从骨骼链拷贝全局输入到CurrentGlobalTransforms
FChainDecoderFK::DecodePose():
## RunIKRetarget()
## RunPoleVectorMatching()
# UIKRetargetProcessor