91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
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// Copyright (c) Meta Platforms, Inc. and affiliates.
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#include "OculusXRMorphTargetsController.h"
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#include "Components/SkeletalMeshComponent.h"
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#include "Engine/SkeletalMesh.h"
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#include "AnimationRuntime.h"
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void FOculusXRMorphTargetsController::ResetMorphTargetCurves(USkinnedMeshComponent* TargetMeshComponent)
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{
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if (TargetMeshComponent)
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{
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TargetMeshComponent->ActiveMorphTargets.Reset();
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USkeletalMesh* TargetMesh = Cast<USkeletalMesh>(TargetMeshComponent->GetSkinnedAsset());
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if (TargetMesh != nullptr)
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{
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TargetMeshComponent->MorphTargetWeights.SetNum(TargetMesh->GetMorphTargets().Num());
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// we need this code to ensure the buffer gets cleared whether or not you have morphtarget curve set
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// the case, where you had morphtargets weight on, and when you clear the weight, you want to make sure
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// the buffer gets cleared and resized
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if (TargetMeshComponent->MorphTargetWeights.Num() > 0)
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{
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FMemory::Memzero(TargetMeshComponent->MorphTargetWeights.GetData(), TargetMeshComponent->MorphTargetWeights.GetAllocatedSize());
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}
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}
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else
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{
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TargetMeshComponent->MorphTargetWeights.Reset();
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}
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}
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}
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void FOculusXRMorphTargetsController::ApplyMorphTargets(USkinnedMeshComponent* TargetMeshComponent)
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{
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if (TargetMeshComponent != nullptr)
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{
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const USkeletalMesh* TargetMesh = Cast<USkeletalMesh>(TargetMeshComponent->GetSkinnedAsset());
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if (TargetMesh != nullptr && MorphTargetCurves.Num() > 0)
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{
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FAnimationRuntime::AppendActiveMorphTargets(TargetMesh, MorphTargetCurves, TargetMeshComponent->ActiveMorphTargets, TargetMeshComponent->MorphTargetWeights);
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}
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}
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}
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void FOculusXRMorphTargetsController::SetMorphTarget(FName MorphTargetName, float Value)
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{
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float* CurveValPtr = MorphTargetCurves.Find(MorphTargetName);
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bool bShouldAddToList = FPlatformMath::Abs(Value) > ZERO_ANIMWEIGHT_THRESH;
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if (bShouldAddToList)
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{
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if (CurveValPtr)
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{
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// sum up, in the future we might normalize, but for now this just sums up
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// this won't work well if all of them have full weight - i.e. additive
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*CurveValPtr = Value;
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}
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else
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{
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MorphTargetCurves.Add(MorphTargetName, Value);
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}
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}
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// if less than ZERO_ANIMWEIGHT_THRESH
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// no reason to keep them on the list
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else
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{
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// remove if found
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MorphTargetCurves.Remove(MorphTargetName);
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}
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}
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float FOculusXRMorphTargetsController::GetMorphTarget(FName MorphTargetName) const
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{
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const float* CurveValPtr = MorphTargetCurves.Find(MorphTargetName);
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if (CurveValPtr)
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{
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return *CurveValPtr;
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}
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else
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{
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return 0.0f;
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}
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}
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void FOculusXRMorphTargetsController::ClearMorphTargets()
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{
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MorphTargetCurves.Empty();
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}
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