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  3. FMeshRegionOperator

FMeshRegionOperator

This class automatically extracts a submesh from a mesh, and can re-insert it after you have edited it, as long as you have not messed up the boundary

API > API/Plugins > API/Plugins/DynamicMesh > API/Plugins/DynamicMesh/Operations

References

   
Module DynamicMesh
Header /Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/MeshRegionOperator.h
Include #include "Operations/MeshRegionOperator.h"

Syntax

class FMeshRegionOperator

Remarks

This class automatically extracts a submesh from a mesh, and can re-insert it after you have edited it, as long as you have not messed up the boundary

[TODO] Should this share any code w/ RegionRemesher? [TODO] ReinsertSubToBaseMapT is not returned by the FDynamicMeshEditor.ReinsertSubmesh, instead we are trying to guess it here, by making some assumptions about what happens. It works for now, but it would better if FDynamicMeshEditor returned this information.

Variables

  Type Name Description
Public variable FDynamicMesh3 * BaseMesh  
Public variable TArray< int > CurrentBaseTris IDs of triangles in the base mesh that correspond to the submesh at time of last Compute or BackPropagate.
Public variable FDynamicSubmesh3 Region  
Public variable FDynamicMeshEditor::EDuplicateTriBehavior ReinsertDuplicateTriBehavior Handle a tricky problem...see comments for EDuplicateTriBehavior enum
Public variable FOptionallySparseIndexMap ReinsertSubToBaseMapT Note computation of this is kind of a hack right now; see TODO in class comment above.
Public variable FOptionallySparseIndexMap ReinsertSubToBaseMapV This is only valid after BackPropagate() call!! maps submeshverts to base mesh

Constructors

  Type Name Description
Public function  

FMeshRegionOperator ( FDynamicMesh3* Base,
const TArrayView< const int >& RegionTris
)

  
Public function  

FMeshRegionOperator ( FDynamicMesh3* Base,
const TArrayView< const int >& RegionTris,
TFunctionRef< void(FDynamicSubmesh3&)> ConfigSubmeshFunc
)

  

Functions

  Type Name Description
Public function bool

BackPropropagate ( bool bAllowSubmeshRepairs
)

 Remove the original submesh region and merge in the remeshed version.
Public function bool

BackPropropagateVertices ( bool bRecomputeBoundaryNormals
)

 Transfer vertex positions in submesh back to base mesh; for use when the vertices in submesh still directly correspond back
Public function Const TSet< int >  
Public function Const const TArray< int > &  
Public function void After remeshing we may create an internal edge between two boundary vertices [a,b].
Public function void

SetSubmeshGroupID ( int GID
)

  

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