void FMovieScene3DTransformSectionRecorder::FinalizeSection()
{
FScopedSlowTask SlowTask(4.0f, NSLOCTEXT("SequenceRecorder", "ProcessingTransforms", "Processing Transforms"));
bRecording = false;
// if we have a valid animation recorder, we need to build our transforms from the animation
// so we properly synchronize our keyframes
if(AnimRecorder.IsValid())
{
check(BufferedTransforms.Num() == 0);
UAnimSequence* AnimSequence = AnimRecorder->GetAnimSequence();
USkeletalMeshComponent* SkeletalMeshComponent = AnimRecorder->GetSkeletalMeshComponent();
if (SkeletalMeshComponent)
{
USkeletalMesh* SkeletalMesh = SkeletalMeshComponent->MasterPoseComponent != nullptr ? SkeletalMeshComponent->MasterPoseComponent->SkeletalMesh : SkeletalMeshComponent->SkeletalMesh;
if (AnimSequence && SkeletalMesh)
{
// find the root bone
int32 RootIndex = INDEX_NONE;
USkeleton* AnimSkeleton = AnimSequence->GetSkeleton();
for (int32 TrackIndex = 0; TrackIndex < AnimSequence->RawAnimationData.Num(); ++TrackIndex)
{
// verify if this bone exists in skeleton
int32 BoneTreeIndex = AnimSequence->GetSkeletonIndexFromRawDataTrackIndex(TrackIndex);
if (BoneTreeIndex != INDEX_NONE)
{
int32 BoneIndex = AnimSkeleton->GetMeshBoneIndexFromSkeletonBoneIndex(SkeletalMesh, BoneTreeIndex);
int32 ParentIndex = SkeletalMesh->RefSkeleton.GetParentIndex(BoneIndex);
if (ParentIndex == INDEX_NONE)
{
// found root
RootIndex = BoneIndex;
break;
}
}
}
check(RootIndex != INDEX_NONE);
const float StartTime = MovieSceneSection->GetStartTime();
// we may need to offset the transform here if the animation was not recorded on the root component
FTransform InvComponentTransform = AnimRecorder->GetComponentTransform().Inverse();
FRawAnimSequenceTrack& RawTrack = AnimSequence->RawAnimationData[RootIndex];
const int32 KeyCount = FMath::Max(FMath::Max(RawTrack.PosKeys.Num(), RawTrack.RotKeys.Num()), RawTrack.ScaleKeys.Num());
for (int32 KeyIndex = 0; KeyIndex < KeyCount; KeyIndex++)
{
FTransform Transform;
if (RawTrack.PosKeys.IsValidIndex(KeyIndex))
{
Transform.SetTranslation(RawTrack.PosKeys[KeyIndex]);
}
else if (RawTrack.PosKeys.Num() > 0)
{
Transform.SetTranslation(RawTrack.PosKeys[0]);
}
if (RawTrack.RotKeys.IsValidIndex(KeyIndex))
{
Transform.SetRotation(RawTrack.RotKeys[KeyIndex]);
}
else if (RawTrack.RotKeys.Num() > 0)
{
Transform.SetRotation(RawTrack.RotKeys[0]);
}
if (RawTrack.ScaleKeys.IsValidIndex(KeyIndex))
{
Transform.SetScale3D(RawTrack.ScaleKeys[KeyIndex]);
}
else if (RawTrack.ScaleKeys.Num() > 0)
{
Transform.SetScale3D(RawTrack.ScaleKeys[0]);
}
BufferedTransforms.Add(FBufferedTransformKey(InvComponentTransform * Transform, StartTime + AnimSequence->GetTimeAtFrame(KeyIndex)));
}
}
}
}
SlowTask.EnterProgressFrame();
// Try to 're-wind' rotations that look like axis flips
// We need to do this as a post-process because the recorder cant reliably access 'wound' rotations:
// - Net quantize may use quaternions.
// - Scene components cache transforms as quaternions.
// - Gameplay is free to clamp/fmod rotations as it sees fit.
int32 TransformCount = BufferedTransforms.Num();
for(int32 TransformIndex = 0; TransformIndex < TransformCount - 1; TransformIndex++)
{
FRotator& Rotator = BufferedTransforms[TransformIndex].WoundRotation;
FRotator& NextRotator = BufferedTransforms[TransformIndex + 1].WoundRotation;
FMath::WindRelativeAnglesDegrees(Rotator.Pitch, NextRotator.Pitch);
FMath::WindRelativeAnglesDegrees(Rotator.Yaw, NextRotator.Yaw);
FMath::WindRelativeAnglesDegrees(Rotator.Roll, NextRotator.Roll);
}
SlowTask.EnterProgressFrame();
// never unwind rotations
const bool bUnwindRotation = false;
// If we are syncing to an animation, use linear interpolation to avoid foot sliding etc.
// Otherwise use cubic for better quality (much better for projectiles etc.)
const EMovieSceneKeyInterpolation Interpolation = AnimRecorder.IsValid() ? EMovieSceneKeyInterpolation::Linear : EMovieSceneKeyInterpolation::Auto;
// add buffered transforms
for(const FBufferedTransformKey& BufferedTransform : BufferedTransforms)
{
const FVector Translation = BufferedTransform.Transform.GetTranslation();
const FVector Rotation = BufferedTransform.WoundRotation.Euler();
const FVector Scale = BufferedTransform.Transform.GetScale3D();
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Translation, EAxis::X, Translation.X, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Translation, EAxis::Y, Translation.Y, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Translation, EAxis::Z, Translation.Z, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Rotation, EAxis::X, Rotation.X, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Rotation, EAxis::Y, Rotation.Y, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Rotation, EAxis::Z, Rotation.Z, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Scale, EAxis::X, Scale.X, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Scale, EAxis::Y, Scale.Y, bUnwindRotation), Interpolation);
MovieSceneSection->AddKey(BufferedTransform.KeyTime, FTransformKey(EKey3DTransformChannel::Scale, EAxis::Z, Scale.Z, bUnwindRotation), Interpolation);
}
BufferedTransforms.Empty();
SlowTask.EnterProgressFrame();
// now remove linear keys
TPair<FRichCurve*, float> CurvesAndTolerances[] =
{
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetTranslationCurve(EAxis::X), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetTranslationCurve(EAxis::Y), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetTranslationCurve(EAxis::Z), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetRotationCurve(EAxis::X), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetRotationCurve(EAxis::Y), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetRotationCurve(EAxis::Z), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetScaleCurve(EAxis::X), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetScaleCurve(EAxis::Y), KINDA_SMALL_NUMBER),
TPairInitializer<FRichCurve*, float>(&MovieSceneSection->GetScaleCurve(EAxis::Z), KINDA_SMALL_NUMBER),
};
for(TPair<FRichCurve*, float>& CurveAndTolerance : CurvesAndTolerances)
{
CurveAndTolerance.Key->RemoveRedundantKeys(CurveAndTolerance.Value);
}
// we cant remove redundant tracks if we were attached as the playback relies on update order of
// transform tracks. Without this track, relative transforms would accumulate.
if(!bWasAttached)
{
// now we have reduced our keys, if we dont have any, remove the section as it is redundant
if( MovieSceneSection->GetTranslationCurve(EAxis::X).Keys.Num() == 0 &&
MovieSceneSection->GetTranslationCurve(EAxis::Y).Keys.Num() == 0 &&
MovieSceneSection->GetTranslationCurve(EAxis::Z).Keys.Num() == 0 &&
MovieSceneSection->GetRotationCurve(EAxis::X).Keys.Num() == 0 &&
MovieSceneSection->GetRotationCurve(EAxis::Y).Keys.Num() == 0 &&
MovieSceneSection->GetRotationCurve(EAxis::Z).Keys.Num() == 0 &&
MovieSceneSection->GetScaleCurve(EAxis::X).Keys.Num() == 0 &&
MovieSceneSection->GetScaleCurve(EAxis::Y).Keys.Num() == 0 &&
MovieSceneSection->GetScaleCurve(EAxis::Z).Keys.Num() == 0)
{
if(DefaultTransform.Equals(FTransform::Identity))
{
MovieScene->RemoveTrack(*MovieSceneTrack.Get());
}
}
}
SlowTask.EnterProgressFrame();
}
