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  3. FMeshRefinerBase

FMeshRefinerBase

This is a base class that implements common functionality for various triangle mesh resampling strategies (ie [FRemesher](API\Plugins\DynamicMesh\FRemesher) and FReducer).

API > API/Plugins > API/Plugins/DynamicMesh

This is a base class that implements common functionality for various triangle mesh resampling strategies (ie FRemesher and FReducer). You probably should not use this class directly.

   
Name FMeshRefinerBase
Type class
Header File /Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/MeshRefinerBase.h
Include Path #include "MeshRefinerBase.h"

Syntax

class FMeshRefinerBase : public UE::Geometry::FMeshRefinerBaseFixLayout

Inheritance Hierarchy

Derived Classes

Constructors

Name Remarks Include Path Unreal Specifiers
  MeshRefinerBase.h  
  MeshRefinerBase.h  
  MeshRefinerBase.h  
  MeshRefinerBase.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~FMeshRefinerBase()

   MeshRefinerBase.h  

Enums

Public

Name Remarks
ETargetProjectionMode Options for projecting vertices onto target surface
EVertexControl  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
AllowCollapseFixedVertsWithSameSetID bool If true, then when two Fixed vertices have the same non-invalid SetID, we treat them as not fixed and allow collapse MeshRefinerBase.h  
DEBUG_CHECK_LEVEL int 0 = no checking, 1 = check constraints each pass, 2 = and check validity each pass, 3 = and check validity after every mesh change (v slow but best for debugging) MeshRefinerBase.h  
DebugEdges TArray< int > This is a debugging aid, will break to debugger if these edges are touched, in debug builds MeshRefinerBase.h  
ENABLE_PROFILING bool Set to true to profile various passes MeshRefinerBase.h  
Progress FProgressCancel * Set this to be able to cancel running Remesher/Reducer MeshRefinerBase.h  
ProjectionMode ETargetProjectionMode Method to use to project vertices onto target surface. Default is no projection. MeshRefinerBase.h  
VertexControlF TFunction< EVertexControl(int)> This function allows client to specify fine-grained control over what happens to specific vertices. MeshRefinerBase.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

virtual bool Cancelled()

 If this returns true, abort computation. MeshRefinerBase.h  

const TOptional< FMeshConstraints > & GetConstraints()

 Get the current mesh constraints MeshRefinerBase.h  

double GetEdgeFlipTolerance()

   MeshRefinerBase.h  

FDynamicMesh3 * GetMesh()

 Get the current mesh we are operating on MeshRefinerBase.h  

IProjectionTarget * ProjectionTarget()

 Get the current Projection Target MeshRefinerBase.h  

void SetEdgeFlipTolerance ( double NewTolerance
)

 Set edge flip tolerance. Value is clamped to range [-1,1] MeshRefinerBase.h  

void SetExternalConstraints ( TOptional< FMeshConstraints > ConstraintsIn
)

 Set external constraints. Note that this object will be updated during computation. MeshRefinerBase.h  

void SetMeshChangeTracker ( FDynamicMeshChangeTracker* Tracker
)

 Mesh Change Tracking support MeshRefinerBase.h  

void SetProjectionTarget ( IProjectionTarget* TargetIn
)

 Set a Projection Target MeshRefinerBase.h  

Protected

Name Remarks Include Path Unreal Specifiers

bool CanCollapseEdge ( int eid,
int a,
int b,
int c,
int d,
int tc,
int td,
int& collapse_to
) const

 Figure out if we can collapse edge eid=[a,b] under current constraint set. MeshRefinerBase.h  

bool CanCollapseVertex ( int eid,
int a,
int b,
int& collapse_to
) const

 Resolve vertex constraints for collapsing edge eid=[a,b]. MeshRefinerBase.h  

bool CheckIfCollapseCreatesFlipOrInvalid ( int vid,
int vother,
const FVector3d& newv,
int tc,
int td
) const

 Check if edge collapse will create a face-normal flip. MeshRefinerBase.h  

bool CheckIfCollapseCreatesTinyTriangle ( int vid,
int vother,
const FVector3d& newv,
int tc,
int td
) const

 Check if edge collapse will create a triangle with small area (either all vertices are close together, or in a sliver configuration) This only checks one-ring of vid, so you have to call it twice, with vid and vother reversed, to check both one-rings MeshRefinerBase.h  

bool CheckIfFlipCreatesTinyTriangle ( int OriginalEdgeVertexA,
int OriginalEdgeVertexB,
int OppositeEdgeVertexC,
int OppositeEdgeVertexD,
int OriginalTriangleIndex
) const

 Check if edge flip might create a triangle with small area (either all vertices are close together, or in a sliver configuration) MeshRefinerBase.h  

bool CheckIfFlipInvertsNormals ( int a,
int b,
int c,
int d,
int t0
) const

 Check if edge flip might reverse normal direction. MeshRefinerBase.h  

double ComputeEdgeFlipMetric ( const FVector3d& Direction0,
const FVector3d& Direction1
) const

   MeshRefinerBase.h  

void DebugCheckUVSeamConstraints()

   MeshRefinerBase.h  

void DebugCheckVertexConstraints()

   MeshRefinerBase.h  

virtual void DoDebugChecks ( bool bEndOfPass
)

   MeshRefinerBase.h  

bool GetVertexConstraint ( int VertexID,
FVertexConstraint& OutConstraint
)

   MeshRefinerBase.h  
  MeshRefinerBase.h  

bool IsVertexPositionConstrained ( int VertexID
)

   MeshRefinerBase.h  

void RuntimeDebugCheck ( int EdgeID
)

 Testing/debug/profiling stuff MeshRefinerBase.h  

virtual void SaveEdgeBeforeModify ( int32 EdgeID
)

   MeshRefinerBase.h  

virtual void SaveTriangleBeforeModify ( int32 TriangleID
)

   MeshRefinerBase.h  

virtual void SaveVertexTrianglesBeforeModify ( int32 VertexID
)

   MeshRefinerBase.h  

Operators

Name Remarks Include Path Unreal Specifiers
  MeshRefinerBase.h  
  MeshRefinerBase.h  

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