FDynamicMeshChange | Unreal Engine 5.6 Documentation

API > API/Runtime > API/Runtime/GeometryCore

FDynamicMeshChange stores a "change" in a FDynamicMesh3, which in this context means the replacement of one set of triangles with a second set, that may have different vertices/attributes. The change can be applied and reverted via Apply()

Construction of a well-formed FDynamicMeshChange is quite complex and it is strongly suggested that you do so via FDynamicMeshChangeTracker


Name	FDynamicMeshChange
Type	class
Header File	/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshChangeTracker.h
Include Path	#include "DynamicMesh/DynamicMeshChangeTracker.h"

Syntax

class FDynamicMeshChange

Destructors

Name	Remarks	Include Path	Unreal Specifiers
~FDynamicMeshChange()		DynamicMesh/DynamicMeshChangeTracker.h

Structs

Name	Remarks
FChangeTriangle
FChangeVertex

Functions

Public

Name	Remarks	Include Path
bool Apply ( FDynamicMesh3* Mesh, bool bRevert ) const	Apply or Revert this change using the given Mesh	DynamicMesh/DynamicMeshChangeTracker.h
void AttachAttributeChanges ( TUniquePtr< FDynamicMeshAttributeChangeSet > AttribChanges )	Attach an attribute change set to this mesh change, which will the be applied/reverted automatically	DynamicMesh/DynamicMeshChangeTracker.h
void CheckValidity ( EValidityCheckFailMode FailMode ) const	Run self-validity checks on internal data structures to test if change is well-formed	DynamicMesh/DynamicMeshChangeTracker.h
void GetAffectedVertices ( TArray< int >& VerticesOut, bool bRevert ) const	Store IDs of affected vertices in VerticesOut both vertices on saved triangles, and directly saved vertices.	DynamicMesh/DynamicMeshChangeTracker.h
void GetSavedTriangleList ( TArray< int >& TrianglesOut, bool bInitial ) const	Store IDs of saved triangles in TrianglesOut.	DynamicMesh/DynamicMeshChangeTracker.h
bool HasSavedVertex ( int VertexID )		DynamicMesh/DynamicMeshChangeTracker.h
void SaveInitialTriangle ( const FDynamicMesh3* Mesh, int TriangleID )	Store the initial state of a triangle	DynamicMesh/DynamicMeshChangeTracker.h
void SaveInitialVertex ( const FDynamicMesh3* Mesh, int VertexID )	Store the initial state of a vertex	DynamicMesh/DynamicMeshChangeTracker.h
void StoreFinalTriangle ( const FDynamicMesh3* Mesh, int TriangleID )	Store the final state of a triangle	DynamicMesh/DynamicMeshChangeTracker.h
void StoreFinalVertex ( const FDynamicMesh3* Mesh, int VertexID )	Store the final state of a vertex	DynamicMesh/DynamicMeshChangeTracker.h
void VerifySaveState()	Do (limited) sanity checks on this MeshChange to ensure it is well-formed	DynamicMesh/DynamicMeshChangeTracker.h

Protected

Name	Remarks	Include Path	Unreal Specifiers
void ApplyReplaceChange ( FDynamicMesh3* Mesh, const TArray< FChangeTriangle >& RemoveTris, const TArray< FChangeVertex >& InsertVerts, const TArray< FChangeTriangle >& InsertTris ) const		DynamicMesh/DynamicMeshChangeTracker.h