[vtkusers] no neighbors by using GetCellNeighbors with OBJ-files

[-Daniel-]

Hi there,

I use GetCellNeighbors() method for 3D objects. 
It works fine with STL-files, but when I use OBJ-files I get no cell
neighbors.
Is there a solution?

My code-snippet:/
for (int i = 0; i < cellPointIds.GetNumberOfIds(); i++) {
  vtkIdList idList = new vtkIdList();
  idList.InsertNextId(cellPointIds.GetId(i));
			
  vtkIdList neighborCellIds = new vtkIdList();
			
  polydata.GetCellNeighbors(cellId, idList, neighborCellIds);
			
  for (int j = 0; j < neighborCellIds.GetNumberOfIds(); j++) {
	neighbors.add(neighborCellIds.GetId(j));
  }
			
  // -> no neighbors by using OBJ
  System.out.println(" neighbors: "+neighborCellIds.GetNumberOfIds());
			
  idList.Delete();
  neighborCellIds.Delete();
}
/

Can anybody help me? Whats wrong here?





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