FGeometryScriptMeshSelection | Unreal Engine 5.7 Documentation

API > API/Plugins > API/Plugins/GeometryScriptingCore

FGeometryScriptMeshSelection is a container for a Mesh Selection used in Geometry Script. The actual selection representation is not exposed to BP, use functions in MeshSelectionFunctions/etc to manipulate the selection.

Internally the selection is stored as a SharedPtr to a FGeometrySelection, which stores a TSet (so unique add and remove are efficient, but the selection cannot be directly indexed without converting to an Array).

Note that the Selection storage is not a UProperty, and is not serialized. FGeometryScriptMeshSelection instances cannot be serialized, they are only transient data structures, that can be created and used Blueprint instances.


Name	FGeometryScriptMeshSelection
Type	struct
Header File	/Engine/Plugins/Runtime/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/GeometryScriptSelectionTypes.h
Include Path	#include "GeometryScript/GeometryScriptSelectionTypes.h"

Syntax

USTRUCT (BlueprintType , Meta=(DisplayName="Mesh Selection"))  
struct FGeometryScriptMeshSelection

Constructors

Name	Remarks	Include Path	Unreal Specifiers
FGeometryScriptMeshSelection()		GeometryScript/GeometryScriptSelectionTypes.h

Variables

Protected

Name	Type	Remarks	Include Path	Unreal Specifiers
GeoSelection	TSharedPtr< UE::Geometry::FGeometrySelection >	Keeping this private for now in case it needs to be revised in 5.2+	GeometryScript/GeometryScriptSelectionTypes.h

Functions

Public

Name	Remarks	Include Path
void ClearSelection()		GeometryScript/GeometryScriptSelectionTypes.h
void CombineSelectionInPlace ( const FGeometryScriptMeshSelection& SelectionB, EGeometryScriptCombineSelectionMode CombineMode )	Combine SelectionB with current selection, updating current selection, using CombineMode to control how combining happens	GeometryScript/GeometryScriptSelectionTypes.h
EGeometryScriptIndexType ConvertToMeshIndexArray ( const UE::Geometry::FDynamicMesh3& Mesh, TArray< int32 >& IndexListOut, EGeometryScriptIndexType ConvertToType ) const	Convert the current selection to a TArray, optionally converting to ConvertToType.	GeometryScript/GeometryScriptSelectionTypes.h
void DebugPrint()		GeometryScript/GeometryScriptSelectionTypes.h
int32 GetNumSelected ()	Note that for edge selections, this can return more elements than expected because both can be redundantly represented i.e. an edge can be in the selection once per 'half edge', since it is represented by triangle/index-in-triangle pair.	GeometryScript/GeometryScriptSelectionTypes.h
int32 GetNumUniqueSelected ( const UE::Geometry::FDynamicMesh3& Mesh ) const	Return the number of valid, unique elements in the selection; e.g., with no double-counting of selected edges.	GeometryScript/GeometryScriptSelectionTypes.h
EGeometryScriptMeshSelectionType GetSelectionType()		GeometryScript/GeometryScriptSelectionTypes.h
bool IsEmpty()		GeometryScript/GeometryScriptSelectionTypes.h
void ProcessByEdgeID ( const UE::Geometry::FDynamicMesh3& Mesh, TFunctionRef< void(int32)> PerEdgeFunc, bool bProcessAllVertsIfSelectionEmpty ) const	Call PerEdgeFunc for each EdgeID in the Selection.	GeometryScript/GeometryScriptSelectionTypes.h
void ProcessByTriangleID ( const UE::Geometry::FDynamicMesh3& Mesh, TFunctionRef< void(int32)> PerTriangleFunc, bool bProcessAllTrisIfSelectionEmpty ) const	Call PerTriangleFunc for each TriangleID in the Selection.	GeometryScript/GeometryScriptSelectionTypes.h
void ProcessByVertexID ( const UE::Geometry::FDynamicMesh3& Mesh, TFunctionRef< void(int32)> PerVertexFunc, bool bProcessAllVertsIfSelectionEmpty ) const	Call PerVertexFunc for each VertexID in the Selection.	GeometryScript/GeometryScriptSelectionTypes.h
void SetSelection ( const FGeometryScriptMeshSelection& Selection )		GeometryScript/GeometryScriptSelectionTypes.h
void SetSelection ( const UE::Geometry::FGeometrySelection& Selection )		GeometryScript/GeometryScriptSelectionTypes.h
void SetSelection ( UE::Geometry::FGeometrySelection&& Selection )		GeometryScript/GeometryScriptSelectionTypes.h

Static

Name	Remarks	Include Path	Unreal Specifiers
static bool ConvertIndexTypeToSelectionType ( EGeometryScriptIndexType IndexType, EGeometryScriptMeshSelectionType& OutSelectionType )		GeometryScript/GeometryScriptSelectionTypes.h

Operators

Name	Remarks	Include Path	Unreal Specifiers
bool operator!= ( const FGeometryScriptMeshSelection& Other ) const		GeometryScript/GeometryScriptSelectionTypes.h
bool operator== ( const FGeometryScriptMeshSelection& Other ) const		GeometryScript/GeometryScriptSelectionTypes.h

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