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/displayVTKHierarchy.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+import vtk
+import inspect
+import csv
+import sys
+from vtk.util.misc import vtkGetDataRoot
+VTK_DATA_ROOT = vtkGetDataRoot()
+
+def addToTree(cls, class_to_vertex_map, tree, names):
+    vertexid = None
+
+    if cls in class_to_vertex_map:
+        vertexid = class_to_vertex_map[cls]
+    else:
+        vertexid = tree.AddVertex()
+        class_to_vertex_map[cls] = vertexid
+        names.InsertValue(vertexid, cls)
+
+    return vertexid
+
+
+def parseClassTree(classtree, tree, names):
+
+    class_to_vertex_map = dict()
+
+    for (parent, child) in classtree:
+        parentid = addToTree(parent, class_to_vertex_map, tree, names)
+        childid = addToTree(child, class_to_vertex_map, tree, names)
+
+        tree.AddGraphEdge(parentid, childid)
+
+# The tree that will hold vtk class hierarchy
+builder = vtk.vtkMutableDirectedGraph()
+names = vtk.vtkStringArray()
+names.SetName("name")
+
+# Allocate 100 tuples to start with. I picked this number
+# out of air.
+names.SetNumberOfTuples(100)
+
+# load vtk class information
+reader = csv.reader(open(VTK_DATA_ROOT + "/Data/Infovis/classes.csv", 'r'))
+
+classes = []
+
+for row in reader:
+    classes.append(row)
+
+# Convert list to tree
+parseClassTree(classes, builder, names)
+
+tree = vtk.vtkTree()
+tree.CheckedShallowCopy(builder)
+tree.GetVertexData().AddArray(names)
+
+## Now iterate over the tree and print it
+#iter = vtk.vtkTreeDFSIterator()
+#iter.SetTree(tree)
+#
+#while iter.HasNext():
+#    id = iter.Next()
+#    mystr = tree.GetLevel(id) * "   "
+#    print mystr + str(names.GetValue(id))
+
+# Display the tree in the tree map viewer
+view = vtk.vtkGraphLayoutView()
+view.AddRepresentationFromInput(tree);
+view.ResetCamera()
+view.Render()
+view.SetVertexLabelArrayName("name")
+view.SetVertexLabelVisibility(True)
+view.GetInteractor().Start()
+
+win = vtk.vtkRenderWindow()
+interact = vtk.vtkRenderWindowInteractor()
+interact.SetRenderWindow(win)
+view.SetRenderWindow(win)
+win.Render()
+
+win.GetInteractor().Initialize()
+win.GetInteractor().Start();
+