67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "UObject/Object.h"
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#include "GeometryBase.h"
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#include "MeshSculptLayerProperties.generated.h"
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PREDECLARE_USE_GEOMETRY_CLASS(FDynamicMesh3);
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PREDECLARE_USE_GEOMETRY_CLASS(FDynamicMeshSculptLayers);
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class IModelingToolExternalDynamicMeshUpdateAPI;
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UCLASS(MinimalAPI)
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class UMeshSculptLayerProperties : public UObject
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{
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GENERATED_BODY()
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public:
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/** Set the active sculpt layer */
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UPROPERTY(EditAnywhere, Category = SculptLayers, meta = (ClampMin = 0, HideEditConditionToggle, EditCondition = bCanEditLayers, ModelingQuickSettings))
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int32 ActiveLayer = 0;
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/** Set the sculpt layer weights */
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UPROPERTY(EditAnywhere, EditFixedSize, NoClear, Category = SculptLayers, meta = (NoResetToDefault, HideEditConditionToggle, EditCondition = bCanEditLayers, ModelingQuickSettings))
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TArray<double> LayerWeights;
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UPROPERTY(meta = (TransientToolProperty))
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bool bCanEditLayers = false;
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UFUNCTION(CallInEditor, Category = SculptLayers)
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void AddLayer();
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UFUNCTION(CallInEditor, Category = SculptLayers)
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void RemoveLayer();
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MESHMODELINGTOOLS_API void Init(IModelingToolExternalDynamicMeshUpdateAPI* InTool, int32 InNumLockedBaseLayers);
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#if WITH_EDITOR
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MESHMODELINGTOOLS_API virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
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#endif
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private:
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IModelingToolExternalDynamicMeshUpdateAPI* Tool;
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int32 NumLockedBaseLayers = 0;
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// Mesh before layer change has been applied. Used for tracking mesh changes that occur over multiple frames (i.e., from an interactive drag)
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// TODO: Add/update a mesh FChange to track sculpt layer changes, and use that instead of saving an entire mesh here
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TSharedPtr<FDynamicMesh3> InitialMesh;
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// Helper to set sculpt layers from the current LayerWeights property (accounting for the NumLockedBaseLayers)
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void SetLayerWeights(FDynamicMeshSculptLayers* SculptLayers) const;
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// Update the ActiveLayer and LayerWeights settings from the current sculpt layers
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void UpdateSettingsFromMesh(const FDynamicMeshSculptLayers* SculptLayers);
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// Helper to apply edits to the current sculpt layers if possible, with associated book keeping
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// @param EditFn The edit to apply if possible
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// @param bEmitChange Whether to emit a change object along with the edit
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void EditSculptLayers(TFunctionRef<void(UE::Geometry::FDynamicMesh3& Mesh, UE::Geometry::FDynamicMeshSculptLayers* SculptLayers)> EditFn, bool bEmitChange);
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};
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