data with vertices & polyhedra attribute

Author: JulienChampagnol

src/tests/data/hybrid_solid.vtu

@@ -3,12 +3,15 @@
 	<UnstructuredGrid>
 		<Piece NumberOfPoints="11" NumberOfCells="4">
 			<PointData>
+				<DataArray type="Float64" Name="toto_on_vertices" format="ascii" NumberOfComponents="1" RangeMin="1" RangeMax="11">1 2 3 4 5 6 7 8 9 10 11 </DataArray>
 				<DataArray type="Float64" Name="points" format="ascii" NumberOfComponents="3" RangeMin="0" RangeMax="2">0 0 0 1 0 0 2 1 0 1 2 0 0 2 0 0 0 1 1 0 1 2 1 1 1 2 1 0 2 1 1 1 2 </DataArray>
 			</PointData>
 			<Points>
 				<DataArray type="Float64" Name="Points" format="ascii" NumberOfComponents="3" RangeMin="0" RangeMax="2">0 0 0 1 0 0 2 1 0 1 2 0 0 2 0 0 0 1 1 0 1 2 1 1 1 2 1 0 2 1 1 1 2 </DataArray>
 			</Points>
-			<CellData />
+			<CellData>
+				<DataArray type="Float64" Name="toto_on_polyhedra" format="ascii" NumberOfComponents="1" RangeMin="3" RangeMax="6">3 4 5 6 </DataArray>
+			</CellData>
 			<Cells>
 				<DataArray type="Int64" Name="connectivity" format="ascii" RangeMin="0" RangeMax="10">0 1 3 4 5 6 8 9 1 2 3 6 7 8 5 6 8 9 10 6 7 8 10 </DataArray>
 				<DataArray type="Int64" Name="offsets" format="ascii" RangeMin="0" RangeMax="11">8 14 19 23 </DataArray>