#208 HEMeshEdgeBodyC::CorrectVertexEdgePtr

open
nobody
5
2004-12-03
2004-12-03
Jon Starck
No

HEMeshFaceBodyC::~HEMeshFaceBodyC()

deletes the edges that form the face and calls

HEMeshEdgeBodyC::CorrectVertexEdgePtr()

to fix the edge referenced by the vertex so that it does
not reference a deleted edge

BUT

when you delete the last edge for the face,
CorrectVertexEdgePtr can fail

in CorrectVertexEdgePtr you do:

HEMeshEdgeBodyC *newEdge = Next()->pair;
if( newEdge != 0 )
{
vertex->edge = newEdge;
return;
}

the problem is that when you get to the last edge on
the face Next() is actually the same as the edge so
newEdge = this->pair.

modify something like this:

if( newEdge != 0 )
{
if (Next() == this)
{
vertex->edge = &newEdge->Prev();
}
else
{
vertex->edge = newEdge;
}
return ;
}

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