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#ROBOMERGE-AUTHOR: michael.balzer #ROBOMERGE-SOURCE: CL 18227685 in //UE5/Release-5.0/... via CL 18229350 #ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v895-18170469) #ROBOMERGE[STARSHIP]: UE5-Main [CL 18231457 by michael balzer in ue5-release-engine-test branch]
134 lines
4.0 KiB
C++
134 lines
4.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "OffsetMeshTool.h"
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#include "InteractiveToolManager.h"
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#include "ToolBuilderUtil.h"
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#include "DynamicMesh/DynamicMesh3.h"
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#include "DynamicMesh/DynamicMeshAABBTree3.h"
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#include "WeightMapTypes.h"
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#include "DeformationOps/MeshOffsetOps.h"
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using namespace UE::Geometry;
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#define LOCTEXT_NAMESPACE "UOffsetMeshTool"
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/*
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* Tool
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*/
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UOffsetMeshTool::UOffsetMeshTool()
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{
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SetToolDisplayName(LOCTEXT("ToolName", "Offset"));
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}
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void UOffsetMeshTool::InitializeProperties()
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{
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OffsetProperties = NewObject<UOffsetMeshToolProperties>(this);
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AddToolPropertySource(OffsetProperties);
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OffsetProperties->RestoreProperties(this);
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OffsetProperties->WatchProperty(OffsetProperties->OffsetType,
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[&](EOffsetMeshToolOffsetType) { UpdateOptionalPropertyVisibility(); InvalidateResult(); });
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OffsetProperties->WatchProperty(OffsetProperties->Distance,
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[&](float) { InvalidateResult(); });
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OffsetProperties->WatchProperty(OffsetProperties->bCreateShell,
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[&](bool) { InvalidateResult(); });
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IterativeProperties = AddOptionalPropertySet<UIterativeOffsetProperties>(
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[&]() { return OffsetProperties->OffsetType == EOffsetMeshToolOffsetType::Iterative; });
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ImplicitProperties = AddOptionalPropertySet<UImplicitOffsetProperties>(
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[&]() { return OffsetProperties->OffsetType == EOffsetMeshToolOffsetType::Implicit; });
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WeightMapProperties = AddWeightMapPropertySet<UOffsetWeightMapSetProperties>();
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WeightMapProperties->WatchProperty(WeightMapProperties->MinDistance,
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[&](float) { InvalidateResult(); });
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}
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void UOffsetMeshTool::OnShutdown(EToolShutdownType ShutdownType)
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{
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OffsetProperties->SaveProperties(this);
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}
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FText UOffsetMeshTool::GetToolMessageString() const
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{
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return LOCTEXT("StartOffsetToolMessage", "Offset the mesh vertex positions using various Offseting methods.");
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}
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FText UOffsetMeshTool::GetAcceptTransactionName() const
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{
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return LOCTEXT("OffsetMeshToolTransactionName", "Offset Mesh");
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}
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bool UOffsetMeshTool::HasMeshTopologyChanged() const
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{
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return OffsetProperties->bCreateShell;
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}
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TUniquePtr<FDynamicMeshOperator> UOffsetMeshTool::MakeNewOperator()
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{
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const FDynamicMesh3* Mesh = &GetInitialMesh();
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TUniquePtr<FMeshOffsetBaseOp> MeshOp;
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switch (OffsetProperties->OffsetType)
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{
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default:
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case EOffsetMeshToolOffsetType::Iterative:
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{
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TUniquePtr<FIterativeOffsetMeshOp> IterOp = MakeUnique<FIterativeOffsetMeshOp>(Mesh);
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IterOp->Steps = IterativeProperties->Steps;
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IterOp->SmoothAlpha = IterativeProperties->SmoothingPerStep;
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IterOp->bReprojectSmooth = IterativeProperties->bReprojectSmooth;
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IterOp->bFixedBoundary = (!IterativeProperties->bOffsetBoundaries);
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MeshOp = MoveTemp(IterOp);
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}
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break;
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case EOffsetMeshToolOffsetType::Implicit:
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{
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TUniquePtr<FLaplacianOffsetMeshOp> ImplicitOp = MakeUnique<FLaplacianOffsetMeshOp>(Mesh);
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double NonlinearT = FMathd::Pow(ImplicitProperties->Smoothness, 2.0);
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// this is an empirically-determined hack that seems to work OK to normalize the result for variable vertex count...
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double ScaledPower = (NonlinearT / 50.0) * Mesh->VertexCount();
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ImplicitOp->Softness = ScaledPower;
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ImplicitOp->bUniformWeights = (ImplicitProperties->bPreserveUVs == false);
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ImplicitOp->bFixedBoundary = true;
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MeshOp = MoveTemp(ImplicitOp);
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}
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break;
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}
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double MaxDist = FMathd::Abs(OffsetProperties->Distance);
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double MinDist = FMathd::Abs(WeightMapProperties->MinDistance);
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MinDist = FMathd::Min(MinDist, MaxDist);
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MaxDist *= GetScaleNormalizationFactor();
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MinDist *= GetScaleNormalizationFactor();
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MeshOp->OffsetRange = FInterval1d(MinDist, MaxDist);
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MeshOp->OffsetSign = (OffsetProperties->Distance < 0) ? -1.0 : 1.0;
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MeshOp->BaseNormals = this->GetInitialVtxNormals();
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MeshOp->bCreateShell = OffsetProperties->bCreateShell;
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if (MeshOp->bCreateShell)
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{
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MeshOp->BoundaryLoops = GetInitialBoundaryLoops();
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}
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MeshOp->WeightMap = GetActiveWeightMap();
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MeshOp->bUseWeightMap = true;
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MeshOp->SetTransform( FTransform3d(GetPreviewTransform()) );
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return MoveTemp(MeshOp);
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}
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#undef LOCTEXT_NAMESPACE
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