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/kcore.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+from vtk import *
+
+# generate a random graph
+source = vtkRandomGraphSource()
+source.SetNumberOfVertices(15000)
+source.SetAllowSelfLoops(False)
+source.SetEdgeProbability(0.003)
+source.SetUseEdgeProbability(True)
+source.AllowParallelEdgesOff()
+
+# compute the kcore levels for every vertex in the graph
+kcore = vtkKCoreDecomposition()
+kcore.AddInputConnection(source.GetOutputPort())
+kcore.SetOutputArrayName("kcore")
+kcore.CheckInputGraphOn()
+
+# generate x/y coordinates for vertices based on coreness
+kcoreLayout = vtkKCoreLayout()
+kcoreLayout.SetGraphConnection( kcore.GetOutputPort() )
+kcoreLayout.SetCartesian(True)
+kcoreLayout.SetEpsilon(0.2)
+kcoreLayout.SetUnitRadius(1.0)
+
+# assign coordinats for layout purposes based on the x/y coordinates
+# that are created in kcoreLayout
+kcoreAssignCoords = vtkAssignCoordinates()
+kcoreAssignCoords.SetInputConnection(kcoreLayout.GetOutputPort())
+kcoreAssignCoords.SetXCoordArrayName("coord_x")
+kcoreAssignCoords.SetYCoordArrayName("coord_y")
+kcoreAssignCoords.Update()
+
+
+# draw it
+view = vtkGraphLayoutView()
+view.AddRepresentationFromInputConnection(kcoreAssignCoords.GetOutputPort())
+
+view.SetVertexLabelArrayName("kcore")
+view.SetVertexLabelVisibility(False)
+view.SetVertexColorArrayName("kcore")
+view.SetColorVertices(True)
+
+# turn off edge visibility since it isn't useful for this view
+view.SetEdgeVisibility(False)
+
+# use the coordinates assigned by kcoreAssignCoords
+view.SetLayoutStrategyToPassThrough()
+
+theme = vtkViewTheme.CreateNeonTheme()
+theme.SetLineWidth(1)
+theme.SetPointSize(5)
+view.ApplyViewTheme(theme)
+theme.FastDelete()
+
+view.GetRenderWindow().SetSize(600, 600)
+view.ResetCamera()
+view.Render()
+
+view.GetInteractor().Start()