void FAnimNode_AimOffsetLookAt::UpdateFromLookAtTarget(FPoseContext& LocalPoseContext)
{
const FBoneContainer& RequiredBones = LocalPoseContext.Pose.GetBoneContainer();
if (RequiredBones.GetSkeletalMeshAsset())
{
const USkeletalMeshSocket* Socket = RequiredBones.GetSkeletalMeshAsset()->FindSocket(SourceSocketName);
if (Socket)
{
const FTransform SocketLocalTransform = Socket->GetSocketLocalTransform();
FBoneReference SocketBoneReference;
SocketBoneReference.BoneName = Socket->BoneName;
SocketBoneReference.Initialize(RequiredBones);
if (SocketBoneReference.IsValid(RequiredBones))
{
const FCompactPoseBoneIndex SocketBoneIndex = SocketBoneReference.GetCompactPoseIndex(RequiredBones);
FCSPose<FCompactPose> GlobalPose;
GlobalPose.InitPose(LocalPoseContext.Pose);
USkeletalMeshComponent* Component = LocalPoseContext.AnimInstanceProxy->GetSkelMeshComponent();
AActor* Actor = Component ? Component->GetOwner() : nullptr;
if (Component && Actor && BlendSpace)
{
const FTransform ActorTransform = Actor->GetTransform();
const FTransform BoneTransform = GlobalPose.GetComponentSpaceTransform(SocketBoneIndex);
const FTransform SocketWorldTransform = SocketLocalTransform * BoneTransform * Component->ComponentToWorld;
// Convert Target to Actor Space
const FTransform TargetWorldTransform(LookAtLocation);
const FVector DirectionToTarget = ActorTransform.InverseTransformVectorNoScale(TargetWorldTransform.GetLocation() - SocketWorldTransform.GetLocation()).GetSafeNormal();
const FVector CurrentDirection = ActorTransform.InverseTransformVectorNoScale(SocketWorldTransform.GetUnitAxis(EAxis::X));
const FVector AxisX = FVector::ForwardVector;
const FVector AxisY = FVector::RightVector;
const FVector AxisZ = FVector::UpVector;
const FVector2D CurrentCoords = FMath::GetAzimuthAndElevation(CurrentDirection, AxisX, AxisY, AxisZ);
const FVector2D TargetCoords = FMath::GetAzimuthAndElevation(DirectionToTarget, AxisX, AxisY, AxisZ);
const FVector BlendInput(
FRotator::NormalizeAxis(FMath::RadiansToDegrees(TargetCoords.X - CurrentCoords.X)),
FRotator::NormalizeAxis(FMath::RadiansToDegrees(TargetCoords.Y - CurrentCoords.Y)),
0.f);
// Set X and Y, so ticking next frame is based on correct weights.
X = BlendInput.X;
Y = BlendInput.Y;
// Generate BlendSampleDataCache from inputs.
BlendSpace->GetSamplesFromBlendInput(BlendInput, BlendSampleDataCache);
if (CVarAimOffsetLookAtDebug.GetValueOnAnyThread() == 1)
{
DrawDebugLine(Component->GetWorld(), SocketWorldTransform.GetLocation(), TargetWorldTransform.GetLocation(), FColor::Green);
DrawDebugLine(Component->GetWorld(), SocketWorldTransform.GetLocation(), SocketWorldTransform.GetLocation() + SocketWorldTransform.GetUnitAxis(EAxis::X) * (TargetWorldTransform.GetLocation() - SocketWorldTransform.GetLocation()).Size(), FColor::Red);
DrawDebugCoordinateSystem(Component->GetWorld(), ActorTransform.GetLocation(), ActorTransform.GetRotation().Rotator(), 100.f);
FString DebugString = FString::Printf(TEXT("Socket (X:%f, Y:%f), Target (X:%f, Y:%f), Result (X:%f, Y:%f)")
, FMath::RadiansToDegrees(CurrentCoords.X)
, FMath::RadiansToDegrees(CurrentCoords.Y)
, FMath::RadiansToDegrees(TargetCoords.X)
, FMath::RadiansToDegrees(TargetCoords.Y)
, BlendInput.X
, BlendInput.Y);
GEngine->AddOnScreenDebugMessage(INDEX_NONE, 0.f, FColor::Red, DebugString, false);
}
}
}
}
}
}
void UDebugSkelMeshComponent::RefreshBoneTransforms(FActorComponentTickFunction* TickFunction)
{
// Run regular update first so we get RequiredBones up to date.
Super::RefreshBoneTransforms(NULL); // Pass NULL so we force non threaded work
const bool bIsPreviewInstance = (PreviewInstance && PreviewInstance == AnimScriptInstance);
BakedAnimationPoses.Empty();
if(bDisplayBakedAnimation && bIsPreviewInstance && PreviewInstance->RequiredBones.IsValid())
{
if(UAnimSequence* Sequence = Cast<UAnimSequence>(PreviewInstance->CurrentAsset))
{
BakedAnimationPoses.AddUninitialized(PreviewInstance->RequiredBones.GetNumBones());
bool bSavedUseSourceData = AnimScriptInstance->RequiredBones.ShouldUseSourceData();
AnimScriptInstance->RequiredBones.SetUseRAWData(true);
AnimScriptInstance->RequiredBones.SetUseSourceData(false);
PreviewInstance->EnableControllers(false);
GenSpaceBases(BakedAnimationPoses);
AnimScriptInstance->RequiredBones.SetUseRAWData(false);
AnimScriptInstance->RequiredBones.SetUseSourceData(bSavedUseSourceData);
PreviewInstance->EnableControllers(true);
}
}
SourceAnimationPoses.Empty();
if(bDisplaySourceAnimation && bIsPreviewInstance && PreviewInstance->RequiredBones.IsValid())
{
if(UAnimSequence* Sequence = Cast<UAnimSequence>(PreviewInstance->CurrentAsset))
{
SourceAnimationPoses.AddUninitialized(PreviewInstance->RequiredBones.GetNumBones());
bool bSavedUseSourceData = AnimScriptInstance->RequiredBones.ShouldUseSourceData();
AnimScriptInstance->RequiredBones.SetUseSourceData(true);
PreviewInstance->EnableControllers(false);
GenSpaceBases(SourceAnimationPoses);
AnimScriptInstance->RequiredBones.SetUseSourceData(bSavedUseSourceData);
PreviewInstance->EnableControllers(true);
}
}
UncompressedSpaceBases.Empty();
if (bDisplayRawAnimation && AnimScriptInstance && AnimScriptInstance->RequiredBones.IsValid())
{
UncompressedSpaceBases.AddUninitialized(AnimScriptInstance->RequiredBones.GetNumBones());
AnimScriptInstance->RequiredBones.SetUseRAWData(true);
GenSpaceBases(UncompressedSpaceBases);
AnimScriptInstance->RequiredBones.SetUseRAWData(false);
}
// Non retargeted pose.
NonRetargetedSpaceBases.Empty();
if( bDisplayNonRetargetedPose && AnimScriptInstance && AnimScriptInstance->RequiredBones.IsValid() )
{
NonRetargetedSpaceBases.AddUninitialized(AnimScriptInstance->RequiredBones.GetNumBones());
AnimScriptInstance->RequiredBones.SetDisableRetargeting(true);
GenSpaceBases(NonRetargetedSpaceBases);
AnimScriptInstance->RequiredBones.SetDisableRetargeting(false);
}
// Only works in PreviewInstance, and not for anim blueprint. This is intended.
AdditiveBasePoses.Empty();
if( bDisplayAdditiveBasePose && bIsPreviewInstance && PreviewInstance->RequiredBones.IsValid() )
{
if (UAnimSequence* Sequence = Cast<UAnimSequence>(PreviewInstance->CurrentAsset))
{
if (Sequence->IsValidAdditive())
{
FCSPose<FCompactPose> CSAdditiveBasePose;
{
FCompactPose AdditiveBasePose;
FBlendedCurve AdditiveCurve(PreviewInstance);
AdditiveBasePose.SetBoneContainer(&PreviewInstance->RequiredBones);
Sequence->GetAdditiveBasePose(AdditiveBasePose, AdditiveCurve, FAnimExtractContext(PreviewInstance->CurrentTime));
CSAdditiveBasePose.InitPose(AdditiveBasePose);
}
for (int32 i = 0; i < AdditiveBasePoses.Num(); ++i)
{
FCompactPoseBoneIndex CompactIndex = PreviewInstance->RequiredBones.MakeCompactPoseIndex(FMeshPoseBoneIndex(i));
AdditiveBasePoses[i] = CSAdditiveBasePose.GetComponentSpaceTransform(CompactIndex);
}
}
}
}
}
bool UAnimPreviewInstance::NativeEvaluateAnimation(FPoseContext& Output)
{
#if WITH_EDITORONLY_DATA
if(bForceRetargetBasePose)
{
USkeletalMeshComponent* MeshComponent = GetSkelMeshComponent();
if(MeshComponent && MeshComponent->SkeletalMesh)
{
FAnimationRuntime::FillWithRetargetBaseRefPose(Output.Pose, GetSkelMeshComponent()->SkeletalMesh);
}
else
{
// ideally we'll return just ref pose, but not sure if this will work with LODs
Output.Pose.ResetToRefPose();
}
}
else
#endif // #if WITH_EDITORONLY_DATA
{
Super::NativeEvaluateAnimation(Output);
}
if (bEnableControllers)
{
UDebugSkelMeshComponent* Component = Cast<UDebugSkelMeshComponent>(GetSkelMeshComponent());
if(Component && CurrentSkeleton)
{
// update curve controllers
UpdateCurveController();
// create bone controllers from
if(BoneControllers.Num() > 0 || CurveBoneControllers.Num() > 0)
{
FCompactPose PreController, PostController;
// if set key is true, we should save pre controller local space transform
// so that we can calculate the delta correctly
if(bSetKey)
{
PreController = Output.Pose;
}
FCSPose<FCompactPose> OutMeshPose;
OutMeshPose.InitPose(&RequiredBones);
// apply curve data first
ApplyBoneControllers(Component, CurveBoneControllers, OutMeshPose);
// and now apply bone controllers data
// it is possible they can be overlapping, but then bone controllers will overwrite
ApplyBoneControllers(Component, BoneControllers, OutMeshPose);
// convert back to local @todo check this
OutMeshPose.ConvertToLocalPoses(Output.Pose);
if(bSetKey)
{
// now we have post controller, and calculate delta now
PostController = Output.Pose;
SetKeyImplementation(PreController, PostController);
}
}
// if any other bone is selected, still go for set key even if nothing changed
else if(Component->BonesOfInterest.Num() > 0)
{
if(bSetKey)
{
// in this case, pose is same
SetKeyImplementation(Output.Pose, Output.Pose);
}
}
}
// we should unset here, just in case somebody clicks the key when it's not valid
if(bSetKey)
{
bSetKey = false;
}
}
return true;
}