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  3. FBaseDynamicMeshSelector

FBaseDynamicMeshSelector

[FBaseDynamicMeshSelector](API\Plugins\ModelingComponents\Selection\FBaseDynamicMeshSelector) is an implementation of [IGeometrySelector](API\Plugins\ModelingComponents\Selection\IGeometrySelector) for a [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh).

API > API/Plugins > API/Plugins/ModelingComponents > API/Plugins/ModelingComponents/Selection

Inheritance Hierarchy

References

   
Module ModelingComponents
Header /Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/DynamicMeshSelector.h
Include #include "Selection/DynamicMeshSelector.h"

Syntax

class FBaseDynamicMeshSelector : public IGeometrySelector

Remarks

FBaseDynamicMeshSelector is an implementation of IGeometrySelector for a UDynamicMesh. Note that the Selector itself does not require that the target object be a UDynamicMeshComponent, and subclasses of FBaseDynamicMeshSelector are used for both Volumes and StaticMeshComponents. Access to the World transform is provided by a TUniqueFunction set up in the Factory.

Variables

  Type Name Description
Protected variable TPimplPtr< UE::Geometry::FColliderMesh > ColliderMesh FColliderMesh is used to store a hit-testable AABBTree independent of the UDynamicMesh
Protected variable TUniqueFunction< UE::Geometry::FTransformSRT3d()> GetWorldTransformFunc  
Protected variable TPimplPtr< UE::Geometry::FSegmentTree3 > GroupEdgeSegmentTree GroupEdgeSegmentTree stores a hit-testable AABBTree for the polygroup edges (depends on GroupTopology)
Protected variable TPimplPtr< UE::Geometry::FGroupTopology > GroupTopology GroupTopology will be built on-demand if polygroup selection queries are made
Protected variable TWeakObjectPtr< UDynamicMesh > SleepingTargetMesh Support for sleep/restore
Protected variable FGeometryIdentifier SourceGeometryIdentifier  
Protected variable TWeakObjectPtr< UDynamicMesh > TargetMesh  
Protected variable FDelegateHandle TargetMesh_OnMeshChangedHandle  

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Protected function const UE::Geometry::FColliderMesh *  
Public function Const UDynamicMesh * These need to be public for the Transformers...can we do it another way?
Protected function const UE::Geometry::FSegmentTree3 *  
Public function const UE::Geometry::FGroupTopology *  
Public function Virtual Const FGeometryIdentifier  
Public function Virtual void

Initialize ( FGeometryIdentifier SourceGeometryIdentifier,
UDynamicMesh* TargetMesh,
TUniqueFunction< UE::Geometry::FTransformSRT3d()> GetWorldTransformFunc
)

 Initialize the FBaseDynamicMeshSelector for a given source/target UDynamicMesh.
Protected function void

InvalidateOnMeshChange ( FDynamicMeshChangeInfo ChangeInfo
)

  
Protected function void  
Public function Virtual void

UpdateAfterGeometryEdit ( IToolsContextTransactionsAPI* TransactionsAPI,
bool bInTransaction,
TUniquePtr< UE::Geometry::FDynamicMeshChange > DynamicMeshChange,
FText GeometryEditTransactionString
)

 UpdateAfterGeometryEdit should be called after editing the UDynamicMesh owned by the Selector (TargetMesh).
Protected function void  
Protected function void  
Protected function void  
Protected function Virtual void  
Protected function Virtual void  

Overridden from IGeometrySelector

  Type Name Description
Public function Virtual void

AccumulateElementsFromPredicate ( FGeometrySelectionElements& ElementsInOut,
bool bTransformToWorld,
bool bIsForPreview,
bool bUseGroupTopology,
TFunctionRef< bool(UE::Geometry::EGeometryElementType, UE::Geometry::FGeoSelectionID)> Predicate
)

 Accumulate all geometric elements (currently 3D triangles, line segments, and points) in the provided ElementsInOut by initializing vertex, edge, and face selections using the provided predicate and then accumulating elements for those selections.
Public function Virtual void

AccumulateSelectionBounds ( const FGeometrySelection& Selection,
FGeometrySelectionBounds& BoundsInOut,
bool bTransformToWorld
)

 Accumulate the bounds of the provided Selection in the provided BoundsInOut.
Public function Virtual Please use the function of the same name which takes EEnumerateSelectionMapping flags virtual instea...

AccumulateSelectionElements ( const FGeometrySelection& Selection,
FGeometrySelectionElements& Elements,
bool bTransformToWorld,
bool bIsForPreview
)

 Prefer AccumulateSelectionElements with Flags parameter.
Public function Virtual void Prefer AccumulateSelectionElements with Flags parameter.
Public function Virtual Const FGeometryIdentifier  
Public function Virtual Const FTransform  
Public function Virtual void

GetSelectionFrame ( const FGeometrySelection& Selection,
UE::Geometry::FFrame3d& SelectionFrameOut,
bool bTransformToWorld
)

 Compute a 3D frame for the provided Selection.
Public function Virtual void Query the Selector for a potential selection based on world-space Ray.
Public function Virtual void

GetTargetFrame ( const FGeometrySelection& Selection,
UE::Geometry::FFrame3d& SelectionFrameOut
)

 Compute a 3D frame for the Selector's target object
Public function Virtual void

InitializeSelectionFromPredicate ( FGeometrySelection& SelectionInOut,
TFunctionRef< bool(UE::Geometry::FGeoSelectionID)> SelectionIDPredicate,
EInitializeSelectionMode InitializeMode,
const FGeometrySelection* ReferenceSelection
)

 Populate a Selection using the provided ReferenceMode, with a Predicate and optional ReferenceSelection.
Public function Virtual bool Check for intersection between a world-space Ray with the Selector's target object and return a FInputRayHit result.
Public function Virtual bool

Restore ()

 Restore a Selector that has had Sleep() called on it.
Public function Virtual void IGeometrySelector API implementation
Public function Virtual bool

Sleep ()

 Temporarily disable the Selector, with the intention of re-enabling it (via Restore()) in the future.
Public function Virtual Const bool The SelectionManager will call SupportsSleep() to determine if an IGeometrySelector needs to be destroyed when the target object is deselected, or if it can be re-used (generally more efficient)
Public function Virtual void

UpdateSelectionFromSelection ( const FGeometrySelection& FromSelection,
bool bAllowConversion,
FGeometrySelectionEditor& SelectionEditor,
const FGeometrySelectionUpdateConfig& UpdateConfig,
UE::Geometry::FGeometrySelectionDelta* SelectionDelta
)

 Combine FromSelection with the current Selection owned/referenced by the Selector, using the provided SelectionEditor and UpdateConfig.
Public function Virtual void Update the active selection based on a world-space Ray.
Public function Virtual void Update the active selection based on a world-space Shape.

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