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Dominik Szczerba wrote "GetCellNeighbours needs cell face points and not
cell points. It returns cell face neighbours and not all neighbours." (old
post-2006 year).

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<div>I&#39;m confused with the parameters of=A0 <table><td class=3D"memname=
">vtkUnstructuredGrid::GetCellNeighbors(vtkIdType cellId, vtkIdList* ptIds,=
 vtkIdList* cellIds).</td></table></div>
<div><table><td></td><td>Let&#39;s say i have an unstructured grid of tetra=
hedra elements.</td></table></div>
<div>And i want to get the neighbors of cell with id=3D=3D1.</div>
<div>=A0</div>
<div>grid-&gt;GetCellNeighbors(cellId, ptIds, cellIds) //cellId should be =
=3D=3D1</div>
<div>=A0</div>
<div>=A0</div>
<div><span>1) cellid is the &quot;cell&quot;=A0with id=3D=3D1 for which i=
=A0want its neighbors. As &quot;cell&quot; is=A0the tetrahedron cell with i=
d=3D=3D1=A0or one of its faces (triangle cell)?</span></div>
<div><span>2) ptIds are cell&#39;s(tetrahedron&#39;s) points or one of its =
faces&#39; points?</span></div>
<div><span>3) cellIds are (neighboring) tetrahedra or (neighboring) faces?<=
/span></div>
<div><span></span>=A0</div>
<div>From an old post i found:</div>
<div>Dominik Szczerba wrote &quot;GetCellNeighbours needs cell face points =
and not cell points. It returns cell face neighbours and not all neighbours=
.&quot; (old post-2006 year).</div>
<div><br>=A0</div>

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