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DynamicMesh

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Classes

  Type Name Description
Public struct FConstraintProjectionData    
Public class FDynamicMeshModule    
Public struct FEdgeConstraint FEdgeConstraint is a constraint on a triangle mesh edge  
Public class FGroupTopology Given a per-triangle integer ("group"), FGroupTopology extracts a group-level topological graph from an input Mesh.  
Public struct FGroupTopologySelection FGroupTopologySelection represents a set of selected elements of a FGroupTopology  
Public class FGroupVisualizationCache FGroupVisualizationCache is intended to be used as a cache for per-group information that would be used to visualize PolyGroups, in particular drawing the Polygroup ID for each group.  
Public class FMeshConstraintCurve    
Public class FMeshConstraints FMeshConstraints is a set of Edge and Vertex constraints for a Triangle Mesh  
Public class FMeshConstraintsUtil Utility functions for configuring a FMeshConstraints instance  
Public class FMeshPaths Given a mesh and a set of edges, walk connected edges to form a set of paths.  
Public class FMeshProjectionTarget FMeshProjectionTarget provides an IProjectionTarget interface to a FDynamicMesh + FDynamicMeshAABBTree3 Use to project points to mesh surface.  
Public class FMeshRefinerBase This is a base class that implements common functionality for various triangle mesh resampling strategies (ie FRemesher and FReducer).  
Public class FMeshVertexCurvatureCache FMeshVertexCurvatureCache calculates and stores various per-vertex Curvature types for a Mesh, as well as some statistics for those values.  
Public class FMeshWeights FMeshWeights implements various techniques for computing local weights of a mesh, for example one-ring weights like Cotangent or Mean-Value.  
Public class FNormalFlowRemesher Remeshing with "face aligned projection".  
Public class FQueueRemesher Extension to Remesher that is smarter about which edges/vertices to touch:  
Public class FRemesher FRemesher implements edge flip/split/collapse/smooth Remeshing.  
Public class FRestrictedSubRegionRemesher FRestrictedSubRegionRemesher is similar to FSubRegionRemesher but does not allow the ROI to grow outside of the original ROI boundary.  
Public class FSubRegionRemesher FSubRegionRemesher is an extension of FRemesher that allows for constraining remeshing to a localized region of a mesh.  
Public class FTriangleGroupTopology FTriangleGroupTopology is a simplification of FGroupTopology that just represents a normal mesh.  
Public struct FVertexConstraint FVertexConstraint is a constraint on a triangle mesh vertex  
Public class FWorldSpaceProjectionTarget    
Public class TMeshSimplification Implementation of Garland & Heckbert Quadric Error Metric (QEM) Triangle Mesh Simplification  

Typedefs

Name Description
FAttrMeshSimplification The simplifier.
FQEMSimplification  
FVolPresMeshSimplification  

Enums

  Type Name Description
Public enum UE::Geometry::EEdgeRefineFlags EEdgeRefineFlags indicate constraints on triangle mesh edges  
Public enum UE::Geometry::ESimplificationResult Copyright Epic Games, Inc. All Rights Reserved.  

Functions

  Type Name Description
Public function void

FaceGroupUtil::CountAllGroups ( const FDynamicMesh3& Mesh,
TArray< int32 >& GroupCountsOut
)

 Count number of tris in each group in Mesh; TODO: does this need sparse storage?
Public function void

FaceGroupUtil::FindAllGroups ( const FDynamicMesh3& Mesh,
TSet< int32 >& GroupsOut
)

 Find the set of group ids used in Mesh
Public function bool

FaceGroupUtil::FindTrianglesByGroup ( FDynamicMesh3& Mesh,
int32 FindGroupID,
TArray< int32 >& TrianglesOut
)

 Find list of triangles in Mesh with specific group id
Public function void

FaceGroupUtil::FindTriangleSetsByGroup ( const FDynamicMesh3& Mesh,
TArray< TArray< int32 >>& GroupTrisOut,
int32 IgnoreGID
)

 Collect triangles by group id.
Public function bool  
Public function void Split input Mesh into submeshes based on group ID does not separate disconnected components w/ same group ID
Public function void

FaceGroupUtil::SeparateMeshByGroups ( FDynamicMesh3& Mesh,
TArray< FDynamicMesh3 >& SplitMeshes,
TArray< int32 >& GroupIDs
)

 Split input Mesh into submeshes based on group ID does not separate disconnected components w/ same group ID
Public function void Set group ID of all triangles in Mesh
Public function void

FaceGroupUtil::SetGroupID ( FDynamicMesh3& Mesh,
const TArrayView< const int32 >& triangles,
int32 to
)

 Set group id of subset of triangles in Mesh
Public function void

FaceGroupUtil::SetGroupToGroup ( FDynamicMesh3& Mesh,
int32 from,
int32 to
)

 Replace group id in Mesh
Public function double

UE::MeshCurvature::GaussianCurvature ( const FDynamicMesh3& Mesh,
int32 VertexIndex
)

 Calculate the Discrete Gaussian Curvature at a vertex as defined by discrete differential geometry Based on Eq 9 from "Discrete Differential-Geometry Operators for Triangulated 2-Manifolds", Meyer et al 2002
Public function double

UE::MeshCurvature::GaussianCurvature ( const FDynamicMesh3& Mesh,
int32 VertexIndex,
TFunctionRef< FVector3d(int32)> VertexPositionFunc
)

 Calculate the Discrete Gaussian Curvature at a vertex as defined by discrete differential geometry Based on Eq 9 from "Discrete Differential-Geometry Operators for Triangulated 2-Manifolds", Meyer et al 2002
Public function FVector3d

UE::MeshCurvature::MeanCurvatureNormal ( const FDynamicMesh3& Mesh,
int32 VertexIndex
)

 Calculate the Discrete Mean-Curvature Normal at a vertex as defined by discrete differential geometry.
Public function FVector3d

UE::MeshCurvature::MeanCurvatureNormal ( const FDynamicMesh3& Mesh,
int32 VertexIndex,
TFunctionRef< FVector3d(int32)> VertexPositionFunc
)

 Calculate the Discrete Mean-Curvature Normal at a vertex as defined by discrete differential geometry.

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