private static void FixRotationKeys(CAnimSequence anim)
{
for (var trackIndex = 0; trackIndex < anim.Tracks.Count; trackIndex++)
{
if (trackIndex == 0)
{
continue; // don't fix root track
}
var track = anim.Tracks[trackIndex];
for (var keyQuatIndex = 0; keyQuatIndex < track.KeyQuat.Length; keyQuatIndex++)
{
track.KeyQuat[keyQuatIndex].Conjugate();
}
}
}
public static CAnimSet ConvertAnims(this USkeleton skeleton, UAnimSequence?animSequence)
{
var animSet = new CAnimSet(skeleton);
// Copy bone names
var numBones = skeleton.ReferenceSkeleton.FinalRefBoneInfo.Length;
Trace.Assert(skeleton.BoneTree.Length == numBones);
animSet.TrackBoneNames = new FName[numBones];
animSet.BonePositions = new CSkeletonBonePosition[numBones];
animSet.BoneModes = new EBoneRetargetingMode[numBones];
for (var boneIndex = 0; boneIndex < numBones; boneIndex++)
{
// Store bone name
animSet.TrackBoneNames[boneIndex] = skeleton.ReferenceSkeleton.FinalRefBoneInfo[boneIndex].Name;
// Store skeleton's bone transform
CSkeletonBonePosition bonePosition;
var transform = skeleton.ReferenceSkeleton.FinalRefBonePose[boneIndex];
bonePosition.Orientation = transform.Rotation;
bonePosition.Position = transform.Translation;
animSet.BonePositions[boneIndex] = bonePosition;
// Process bone retargeting mode
var boneMode = skeleton.BoneTree[boneIndex].TranslationRetargetingMode switch
{
EBoneTranslationRetargetingMode.Skeleton => EBoneRetargetingMode.Mesh,
EBoneTranslationRetargetingMode.Animation => EBoneRetargetingMode.Animation,
EBoneTranslationRetargetingMode.AnimationScaled => EBoneRetargetingMode.AnimationScaled,
EBoneTranslationRetargetingMode.AnimationRelative => EBoneRetargetingMode.AnimationRelative,
EBoneTranslationRetargetingMode.OrientAndScale => EBoneRetargetingMode.OrientAndScale,
_ => EBoneRetargetingMode.OrientAndScale //todo: other modes?
};
animSet.BoneModes[boneIndex] = boneMode;
}
// Check for NULL 'animSequence' only after CAnimSet is created: we're doing ConvertAnims(null) to create an empty AnimSet
if (animSequence == null)
{
return(animSet);
}
var numTracks = animSequence.GetNumTracks();
// Store UAnimSequence in 'OriginalAnims' array, we just need it from time to time
//OriginalAnims.Add(animSequence);
// Create CAnimSequence
var dst = new CAnimSequence(animSequence);
animSet.Sequences.Add(dst);
dst.Name = animSequence.Name;
dst.NumFrames = animSequence.NumFrames;
dst.Rate = animSequence.NumFrames / animSequence.SequenceLength * animSequence.RateScale;
dst.bAdditive = animSequence.AdditiveAnimType != AAT_None;
// Store information for animation retargeting.
// Reference: UAnimSequence::GetRetargetTransforms()
FTransform[]? retargetTransforms = null;
if (animSequence.RetargetSource.IsNone && animSequence.RetargetSourceAssetReferencePose is { Length : > 0 })
private static void AdjustSequenceBySkeleton(FReferenceSkeleton skeleton, FTransform[] transforms, CAnimSequence anim)
{
if (skeleton.FinalRefBoneInfo.Length == 0 ||
skeleton.FinalRefBoneInfo.Length != transforms.Length)
{
return;
}
for (var trackIndex = 0; trackIndex < anim.Tracks.Count; trackIndex++)
{
var track = anim.Tracks[trackIndex];
var boneScale = skeleton.GetBoneScale(transforms, trackIndex);
if (Math.Abs(boneScale.X - 1.0f) > 0.001f ||
Math.Abs(boneScale.Y - 1.0f) > 0.001f ||
Math.Abs(boneScale.Z - 1.0f) > 0.001f)
{
for (int keyIndex = 0; keyIndex < track.KeyPos.Length; keyIndex++)
{
// Scale translation by accumulated bone scale value
track.KeyPos[keyIndex].Scale(boneScale);
}
}
}
}
