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  3. FDynamicMeshChange

FDynamicMeshChange

[FDynamicMeshChange](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshChange) stores a "change" in a [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3), which in this context means the replacement of one set of triangles with a second set, that may have different vertices/attributes.

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/DynamicMesh

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshChangeTracker.h
Include #include "DynamicMesh/DynamicMeshChangeTracker.h"

Syntax

class FDynamicMeshChange

Remarks

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

Variables

  Type Name Description
Protected variable TUniquePtr< FDynamicMeshAttributeChangeSet > AttributeChanges  
Protected variable TArray< FChangeTriangle > NewTriangles  
Protected variable TArray< FChangeVertex > NewVertices  
Protected variable TArray< FChangeTriangle > OldTriangles  
Protected variable TArray< FChangeVertex > OldVertices  

Destructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function Const bool

Apply ( FDynamicMesh3* Mesh,
bool bRevert
)

 Apply or Revert this change using the given Mesh
Protected function Const void

ApplyReplaceChange ( FDynamicMesh3* Mesh,
const TArray< FChangeTriangle >& RemoveTris,
const TArray< FChangeVertex >& InsertVerts,
const TArray< FChangeTriangle >& InsertTris
)

  
Public function void Attach an attribute change set to this mesh change, which will the be applied/reverted automatically
Public function Const void Run self-validity checks on internal data structures to test if change is well-formed
Public function Const void

GetSavedTriangleList ( TArray< int >& TrianglesOut,
bool bInitial
)

 Store IDs of saved triangles in TrianglesOut.
Public function bool

HasSavedVertex ( int VertexID
)

  
Public function void

SaveInitialTriangle ( const FDynamicMesh3* Mesh,
int TriangleID
)

 Store the initial state of a triangle
Public function void

SaveInitialVertex ( const FDynamicMesh3* Mesh,
int VertexID
)

 Store the initial state of a vertex
Public function void

StoreFinalTriangle ( const FDynamicMesh3* Mesh,
int TriangleID
)

 Store the final state of a triangle
Public function void

StoreFinalVertex ( const FDynamicMesh3* Mesh,
int VertexID
)

 Store the final state of a vertex
Public function Const void Do (limited) sanity checks on this MeshChange to ensure it is well-formed

Classes

  Type Name Description
Protected struct FChangeTriangle    
Protected struct FChangeVertex    

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