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Selection

API > API/Plugins > API/Plugins/ModelingComponents

Classes

  Type Name Description
Public class FBaseDynamicMeshSelector FBaseDynamicMeshSelector is an implementation of IGeometrySelector for a UDynamicMesh.  
Public class FBasicDynamicMeshSelectionTransformer BasicDynamicMeshSelectionTransformer is a basic Transformer implementation that can be used with a FBaseDynamicMeshSelector.  
Public class FBoundarySelector This class allows selection of mesh boundary loops.  
Public class FBoundaryTopologyProvider    
Public class FDynamicMeshComponentSelectorFactory FDynamicMeshComponentSelectorFactory constructs FDynamicMeshSelector instances for UDynamicMeshComponents  
Public class FDynamicMeshPolygroupTransformer IGeometrySelectionTransformer for Dynamic Mesh Polygroups, that does various types of soft deformation.  
Public class FDynamicMeshSelector FDynamicMeshSelector is an implementation of FBaseDynamicMeshSelector meant to be used with UDynamicMeshComponents.  
Public struct FGeometryIdentifier FGeometryIdentifier is used to represent a specific Geometry-containing object.  
Public class FGeometrySelectionDeltaChange FGeometrySelectionDeltaChange stores a Remove-then-Add change in a FGeometrySelection.  
Public struct FGeometrySelectionHandle FGeometrySelectionHandle stores a Selection and an Identifier for the geometry object that the Selection is defined relative to  
Public class FGeometrySelectionReplaceChange FGeometrySelectionReplaceChange stores a full replacement of a FGeometrySelection, ie full copies of the selection set before and after the change  
Public class FGroupTopologyProvider TopologyProvider using FGroupTopology  
Public class FGroupTopologySelector FGroupTopologySelector is a MeshTopologySelector subclass using an FGroupTopology to define groups, edges, and vertices  
Public struct FGroupTopologyUtils Additional functionality for operating on FGroupTopology  
Public class FMeshEdgesFromTriangleSubIndices Helper class that can store a list of edges as pairs of triangle IDs and {0,1,2} indices into the triangle edge triplet, because regular FDynamicMesh edge IDs may not stay the same across some mesh operations that preserve the vertex/triangle ID topology.  
Public struct UStruct FMeshElementSelectionParams    
Public class FMeshTopologySelectionMechanicSelectionChange    
Public class FMeshTopologySelector FMeshTopologySelector implements selection behavior for a subset of mesh elements.  
Public class FSelectClickedAction BehaviorTarget to do world raycast selection from a click Currently used to click-select reference planes in the world  
Public struct FSelectionRenderHelper    
Public class FTopologyProvider FTopologyProvider provides selectable edge/group/corner information for FMeshTopologySelector to use.  
Public class IGeometrySelectionChange Base interface intended to be implemented by FToolCommandChange subclasses that represent changes to a FGeometrySelection.  
Public class IGeometrySelectionTransformer IGeometrySelectionTransformer is a transient object that is created by an IGeometrySelector to provide external code with a way to manipulate/transform an active Selection.  
Public class IGeometrySelector IGeometrySelector is a base API definition for, roughly, "an object that knows how to  
Public class IGeometrySelectorFactory Factory for a specific type of IGeometrySelector  
Public class UClass UBoundarySelectionMechanic    
Public class UClass deprecated UDEPRECATED_PolygonSelectionMechanicProperties DEPRECATED: Use UMeshTopologySelectionMechanicProperties.  
Public class UClass Abstract UGeometrySelectionEditCommand UGeometrySelectionEditCommand is a command that edits geometry based on a selection.  
Public class UClass UGeometrySelectionEditCommandArguments Arguments for a UGeometrySelectionEditCommand  
Public class UClass UGeometrySelectionEditCommandResult    
Public class UClass UGeometrySelectionManager UGeometrySelectionManager provides the infrastructure for "Element Selection", ie geometric sub-elements of some geometry object like a Triangle Mesh.  
Public class UClass Abstract UMeshTopologySelectionMechanic Base class mechanic for selecting a subset of mesh elements (edge loops, groups, corners, etc.) Internally it relies on an FMeshTopologySelector to define which type of mesh topology is selectable.  
Public class UClass UMeshTopologySelectionMechanicProperties    
Public class UClass UPolygonSelectionMechanic UPolygonSelectionMechanic implements the interaction for selecting a set of faces/vertices/edges from a FGroupTopology.  

Enums

  Type Name Description
Public enum EEnumerateRenderCachesDirtyFlags    
Public enum UEnum EMarqueeSelectionUpdateType Selection update type when the marquee rectangle has changed.  

Functions

  Type Name Description
Public function    
Public function Const const TArray< int32 > &  
Public function Const bool  
Public function Const bool

IsEmpty ()

  
Public function Const bool

operator== ( const FGenericMeshSelection& Other
)

  
Public function  

PREDECLARE_GEOMETRY ( FSegmentTree3
)

  
Public function  

PREDECLARE_GEOMETRY ( FGroupTopology
)

  
Public function  

PREDECLARE_GEOMETRY ( FColliderMesh
)

  
Public function    
Public function  

PREDECLARE_USE_GEOMETRY_CLASS ( FGroupTopology
)

  
Public function    
Public function  

PREDECLARE_USE_GEOMETRY_CLASS ( FGroupTopology
)

  
Public function    
Public function  

PREDECLARE_USE_GEOMETRY_STRUCT ( FGroupTopologySelection
)

  
Public function Please use the function of the same name which takes EEnumerateSelectionMapping flags instead bool Prefer AccumulateSelectionElements with Flags parameter.
Public function bool Add the geometry selection elements corresponding to the given Selection to Elements.
Public function void

ToolSelectionUtil::DebugRender ( IToolsContextRenderAPI* RenderAPI,
const UE::Geometry::FGeometrySelectionElements& Elements,
float LineThickness,
FLinearColor LineColor,
float PointSize,
FLinearColor PointColor,
float DepthBias,
FLinearColor FillColor
)

 Todo [nickolas.drake]: remove this function when no longer used by GeometrySelectionManager
Public function void Render the given Elements using FPrimitiveDrawInterface
Public function void Change the active selection to the given Actor, via given ToolManager. Replaces existing selection.
Public function void

ToolSelectionUtil::SetNewActorSelection ( UInteractiveToolManager* ToolManager,
const TArray< AActor* >& Actors
)

 Change the active selection to the given Actors, via given ToolManager.

Variables

  Type Name Description
Public variable TArray< UE::Geometry::FIndex2i > EdgeIDs Selected edges, represented as index pairs because for many selections, using a pair of vertices defining/on the edge is more reliable (due to unstable edge IDs)
Public variable TArray< int32 > FaceIDs Selected triangles/faces/regions
Public variable TArray< UE::Geometry::FSegment3d > RenderEdges Set of 3D lines representing selection (in world space)
Public variable TArray< FVector3d > RenderVertices Set of 3D points representing selection (in world space)
Public variable UPrimitiveComponent * SourceComponent Component this selection applies to (eg that owns mesh, etc)
Public variable ETopologyType TopologyType Selection type
Public variable TArray< int32 > VertexIDs Selected vertices or "corners" (eg of polygroup topology)

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