FIntrinsicEdgeFlipMesh

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FIntrinsicEdgeFlipMesh augments the base class FSimpleIntrinsicEdgeFlipMesh with the addition of a 'normal coordinate' based correspondence with the surface mesh.

This class supports both the trace of intrinsic mesh edges across the surface mesh, and the trace of surface mesh edges across the intrinsic mesh.

Note, because only edge flips are supported (no edge split or triangle pokes), the vertex set of the intrinsic mesh and the surface (i.e. extrinsic) mesh will be the same.

The expected use // generate the implicit mesh from a surface mesh FIntrinsicEdgeFlipMesh ImplicitMesh( DynamicMesh );

.. do some edge flips .. perhaps FlipToDelaunay( ImplicitMesh, ..)

// if only a small percentage of the intrinsic edges are to be traced, this can be done directly as auto TracedIntrinsicEdge = ImplicitMesh.TraceEdge(IntrinsicEdgeID);

// alternately if a large number of edges will be traced, a correspondence will be more efficient. // create a correspondence that allows the edges of the implicit mesh to be traced on the surface mesh

FIntrinsicEdgeFlipMesh::FEdgeCorrespondence Correspondence = ImplicitMesh.ComputeEdgeCorrespondence();

for (.. doing multiple traces.. ) { // trace desired edge across the surface mesh int32 IntrinsicEdgeID =
auto TracedIntrinsicEdge = Correspondence.TraceEdge(IntrinsicEdgeID); }

NB: The lifetime of this structure should not exceed that of the original FDynamicMesh as this class holds a pointer to that mesh to reference locations on its surface. Also, this class isn't currently expected to work with surface meshes that have bow-ties.

Note: This assumes but does not check that the FDynamicMesh3 "Surface Mesh" has consistent orientation of all triangles.

Syntax

class FIntrinsicEdgeFlipMesh : public UE::Geometry::FSimpleIntrinsicEdgeFlipMesh  
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class FIntrinsicEdgeFlipMesh : public UE::Geometry::FSimpleIntrinsicEdgeFlipMesh

Inheritance Hierarchy

• FSimpleIntrinsicEdgeFlipMesh → FIntrinsicEdgeFlipMesh

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