140 lines
4.8 KiB
C++
140 lines
4.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Operations/SubdividePoly.h"
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#include "CoreMinimal.h"
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#include "InteractiveTool.h"
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#include "InteractiveToolBuilder.h"
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#include "ModelingOperators.h"
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#include "SingleSelectionTool.h"
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#include "Components/DynamicMeshComponent.h"
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#include "MeshOpPreviewHelpers.h"
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#include "BaseTools/SingleSelectionMeshEditingTool.h"
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#include "SubdividePolyTool.generated.h"
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#define UE_API MESHMODELINGTOOLSEDITORONLYEXP_API
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class USubdividePolyTool;
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class UPreviewGeometry;
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/**
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* Tool builder
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*/
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UCLASS(MinimalAPI)
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class USubdividePolyToolBuilder : public USingleSelectionMeshEditingToolBuilder
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{
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GENERATED_BODY()
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public:
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UE_API virtual USingleSelectionMeshEditingTool* CreateNewTool(const FToolBuilderState& SceneState) const override;
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};
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/**
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* Properties
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*/
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UCLASS(MinimalAPI)
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class USubdividePolyToolProperties : public UInteractiveToolPropertySet
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{
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GENERATED_BODY()
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public:
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/** Number of iterations/levels of subdivision to perform */
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UPROPERTY(EditAnywhere, Category=Settings, meta = (UIMin = "1", ClampMin = "1", Delta = 1, LinearDeltaSensitivity = 50))
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int SubdivisionLevel = 3;
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UPROPERTY(EditAnywhere, Category = Settings)
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ESubdivisionScheme SubdivisionScheme = ESubdivisionScheme::CatmullClark;
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// How to treat mesh boundaries
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UPROPERTY(EditAnywhere, Category = Settings, meta = (EditCondition = "SubdivisionScheme != ESubdivisionScheme::Bilinear || bOverriddenSubdivisionScheme"))
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ESubdivisionBoundaryScheme BoundaryScheme = ESubdivisionBoundaryScheme::SmoothCorners;
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UPROPERTY(EditAnywhere, Category=Settings)
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ESubdivisionOutputNormals NormalComputationMethod = ESubdivisionOutputNormals::Generated;
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UPROPERTY(EditAnywhere, Category=Settings, meta = (DisplayName = "UV Computation Method"))
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ESubdivisionOutputUVs UVComputationMethod = ESubdivisionOutputUVs::Interpolated;
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/** Assign a new PolyGroup ID to each newly created face */
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UPROPERTY(EditAnywhere, Category = Settings, meta = (DisplayName = "New PolyGroups"))
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bool bNewPolyGroups = false;
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/** Display each PolyGroup with an auto-generated color */
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UPROPERTY(EditAnywhere, Category = Settings)
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bool bRenderGroups = true;
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/** Display the mesh corresponding to Subdivision Level 0 */
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UPROPERTY(EditAnywhere, Category = Settings)
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bool bRenderCage = true;
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/** When using the group topology for subdivision, whether to add extra corners at sharp group edge bends on mesh boundaries. Note: We cannot add extra corners on non-boundary group edges, as this would create non-manifold geometry on subdivision. */
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UPROPERTY(EditAnywhere, Category = TopologyOptions, meta = (DisplayName = "Add Extra Corners on Boundary", EditCondition = "SubdivisionScheme != ESubdivisionScheme::Loop"))
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bool bAddExtraCorners = true;
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/** How acute an angle between two edges needs to be to add an extra corner there when Add Extra Corners is true. */
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UPROPERTY(EditAnywhere, Category = TopologyOptions, meta = (ClampMin = "0", ClampMax = "180", EditCondition = "SubdivisionScheme != ESubdivisionScheme::Loop && bAddExtraCorners"))
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double ExtraCornerAngleThresholdDegrees = 135;
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/** Shows whether the current subdivision scheme is overridden to be "Loop" because the group topology is unsuitable. */
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UPROPERTY(VisibleAnywhere, Category = Settings, AdvancedDisplay, meta = (TransientToolProperty))
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bool bOverriddenSubdivisionScheme = false;
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};
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/**
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* Tool actual
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*/
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UCLASS(MinimalAPI)
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class USubdividePolyTool : public USingleSelectionMeshEditingTool
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{
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GENERATED_BODY()
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public:
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UE_API virtual void Setup() override;
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UE_API virtual void OnShutdown(EToolShutdownType ShutdownType) override;
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virtual bool HasCancel() const override { return true; }
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virtual bool HasAccept() const override { return true; }
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UE_API virtual bool CanAccept() const override;
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UE_API virtual void OnTick(float DeltaTime) override;
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protected:
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friend class USubdividePolyOperatorFactory;
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UPROPERTY()
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TObjectPtr<UPreviewMesh> PreviewMesh = nullptr;
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UPROPERTY()
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TObjectPtr<USubdividePolyToolProperties> Properties = nullptr;
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// Input mesh
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TSharedPtr<UE::Geometry::FDynamicMesh3, ESPMode::ThreadSafe> OriginalMesh;
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TSharedPtr<UE::Geometry::FGroupTopology> Topology;
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UPROPERTY()
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TObjectPtr<UPreviewGeometry> PreviewGeometry = nullptr;
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bool bPreviewGeometryNeedsUpdate;
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UE_API void CreateOrUpdatePreviewGeometry();
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// Determine if the mesh group topology can be used for Catmull-Clark or Bilinear subdivision. If not, we can only
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// Loop subdivision on the original triangle mesh.
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UE_API bool CheckGroupTopology(FText& Message);
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UE_API void CapSubdivisionLevel(ESubdivisionScheme Scheme, int DesiredLevel);
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double ExtraCornerDotProductThreshold = 2;
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UE_API ESubdivisionScheme GetSubdivisionSchemeToUse();
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FText OverriddenSchemeMessage;
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FText CappedSubdivisionMessage;
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UE_API void UpdateDisplayedMessage();
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};
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#undef UE_API
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