ParaView-5.0.1: Added the source-tree to ThirdParty-dev and patched as described in the README file

Resolves bug-report http://bugs.openfoam.org/view.php?id=2098

ParaView-5.0.1/VTK/Examples/Infovis/Python/treering_hierarchical_view.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+from vtk import *
+
+reader1 = vtkXMLTreeReader()
+reader1.SetFileName("vtkclasses.xml")
+reader1.SetEdgePedigreeIdArrayName("tree edge")
+reader1.GenerateVertexPedigreeIdsOff();
+reader1.SetVertexPedigreeIdArrayName("id");
+
+reader2 = vtkXMLTreeReader()
+reader2.SetFileName("vtklibrary.xml")
+reader2.SetEdgePedigreeIdArrayName("graph edge")
+reader2.GenerateVertexPedigreeIdsOff();
+reader2.SetVertexPedigreeIdArrayName("id");
+
+view = vtkTreeRingView()
+view.SetTreeFromInputConnection(reader2.GetOutputPort())
+view.SetGraphFromInputConnection(reader1.GetOutputPort())
+view.SetAreaColorArrayName("VertexDegree")
+view.SetAreaHoverArrayName("id")
+view.SetAreaLabelArrayName("id")
+view.SetAreaLabelVisibility(True)
+view.SetShrinkPercentage(0.02)
+view.SetBundlingStrength(.5)
+view.Update()
+view.SetEdgeColorArrayName("tree edge")
+view.SetColorEdges(True)
+
+view2 = vtkTreeRingView()
+view2.SetTreeFromInputConnection(reader1.GetOutputPort())
+view2.SetGraphFromInputConnection(reader2.GetOutputPort())
+view2.SetRootAngles(180.,360.)
+view2.SetAreaColorArrayName("VertexDegree")
+view2.SetAreaHoverArrayName("id")
+view2.SetAreaLabelArrayName("id")
+view2.SetAreaLabelVisibility(True)
+view2.SetShrinkPercentage(0.01)
+view2.Update()
+view2.SetEdgeColorArrayName("graph edge")
+view2.SetColorEdges(True)
+
+# Apply a theme to the views
+theme = vtkViewTheme.CreateMellowTheme()
+view.ApplyViewTheme(theme)
+view2.ApplyViewTheme(theme)
+theme.FastDelete()
+
+view.ResetCamera()
+view.Render()
+
+view2.ResetCamera()
+view2.Render()
+
+view.GetInteractor().Start()
+