aVertex->GetPointIds()->SetId( 0, i - 1 );
aVertexGrid->InsertNextCell( aVertex->GetCellType(), aVertex->GetPointIds());
aZValues->InsertNextValue( aZ );
aVertex->GetPointIds()->SetId( 0, i - 1 );
aVertexGrid->InsertNextCell( aVertex->GetCellType(), aVertex->GetPointIds());
aZValues->InsertNextValue( aZ );