FSimpleIntrinsicMesh | Unreal Engine 5.6 Documentation

API > API/Plugins > API/Plugins/DynamicMesh

FSimpleIntrinsicMesh extends FSimpleIntrinsicEdgeFlipMesh to support edge splits and triangle pokes in addition to edge flips. The surface mesh vertices will be a subset of the intrinsic mesh vertex set.

This is intended as a base class for more sophisticated intrinsic mesh classes, as it does not explicitly track the topology changes relative to the original surface mesh. For example it does not record the locations on the surface mesh of any new intrinsic vertices or the locations of intrinsic mesh edge intersections with the surface mesh edges.

FIntrinsicMesh and FIntrinsicTriangulation are derived from this class and each maintain their own connection with the surface mesh ( "normal coordinates" or "signpost data") that can track these surface mesh locations and can be used to reconstruct paths (e.g. intrinsic edges) on the surface mesh.


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

Syntax

class FSimpleIntrinsicMesh : public UE::Geometry::FSimpleIntrinsicEdgeFlipMesh

Inheritance Hierarchy

FSimpleIntrinsicEdgeFlipMesh → FSimpleIntrinsicMesh

Derived Classes

Constructors

Name	Remarks	Include Path
FSimpleIntrinsicMesh ()		Operations/IntrinsicTriangulationMesh.h
FSimpleIntrinsicMesh ( const FDynamicMesh3& SrcMesh )	Constructor does ID-matching deep copy the basic mesh topology (but no attributes or groups)	Operations/IntrinsicTriangulationMesh.h
FSimpleIntrinsicMesh ( const FSimpleIntrinsicMesh& )		Operations/IntrinsicTriangulationMesh.h

Typedefs

Name	Type	Include Path
FEdge	FSimpleIntrinsicEdgeFlipMesh::FEdge	Operations/IntrinsicTriangulationMesh.h
FEdgeFlipInfo	FSimpleIntrinsicEdgeFlipMesh::FEdgeFlipInfo	Operations/IntrinsicTriangulationMesh.h
FEdgeSplitInfo	DynamicMeshInfo::FEdgeSplitInfo	Operations/IntrinsicTriangulationMesh.h
FPokeTriangleInfo	DynamicMeshInfo::FPokeTriangleInfo	Operations/IntrinsicTriangulationMesh.h
MyBase	FSimpleIntrinsicEdgeFlipMesh	Operations/IntrinsicTriangulationMesh.h

Constants

Name	Type	Remarks	Include Path
InvalidID	int	InvalidID indicates that a vertex/edge/triangle ID is invalid	Operations/IntrinsicTriangulationMesh.h

Functions

Public

Name	Remarks	Include Path	Unreal Specifiers
EMeshResult PokeTriangle ( int32 TID, const FVector3d& BaryCoordinates, FPokeTriangleInfo& PokeInfo )	Insert a new vertex inside an intrinsic triangle, ie do a 1 to 3 triangle split	Operations/IntrinsicTriangulationMesh.h
EMeshResult SplitEdge ( int32 EdgeAB, FEdgeSplitInfo& SplitInfo, double SplitParameterT )	Split an intrinsic edge of the mesh by inserting a vertex.	Operations/IntrinsicTriangulationMesh.h

Protected

Name	Remarks	Include Path
int32 AddEdgeInternal ( int32 vA, int32 vB, int32 tA, int32 tB )	Add new edge to the mesh topology, does not update any of the intrinsic quantities	Operations/IntrinsicTriangulationMesh.h
int32 AddTriangleInternal ( int32 a, int32 b, int32 c, int32 e0, int32 e1, int32 e2 )	Add new triangle to the mesh topology, does not update any of the intrinsic quantities	Operations/IntrinsicTriangulationMesh.h
void AllocateEdgesList ( int32 VertexID )	Allocate, or clear existing edge list for specified vertex	Operations/IntrinsicTriangulationMesh.h
int32 AppendVertex ( const FVector3d& vPos )	Add new vertex to the mesh topology, does not update any of the intrinsic quantities	Operations/IntrinsicTriangulationMesh.h
EMeshResult PokeTriangleTopology ( int32 TID, FPokeTriangleInfo& PokeInfo )	Updates the mesh connectivity by adding a new vertex at the vertex-averaged location.	Operations/IntrinsicTriangulationMesh.h
EMeshResult SplitEdgeTopology ( int32 EdgeAB, FEdgeSplitInfo& SplitInfo )	Updates the mesh connectivity by adding a new vertex at the vertex-averaged location.	Operations/IntrinsicTriangulationMesh.h

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