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/programmable_pipeline2.py

@@ -0,0 +1,140 @@
+#!/usr/bin/env python
+"""
+This file demonstrates the creation of a directed graph using the
+Python interface to VTK.
+"""
+
+from vtk import *
+from sys import exit
+
+xdim = 400
+ydim = 400
+
+#------------------------------------------------------------------------------
+# Script Entry Point
+#------------------------------------------------------------------------------
+if __name__ == "__main__":
+
+    #----------------------------------------------------------
+    # Create a graph (see graph1.py for explanations)
+    G1 = vtkMutableDirectedGraph()
+    vertID1 = vtkIntArray()
+    vertID1.SetName("ID")
+    G1.GetVertexData().AddArray( vertID1 )
+    G1.GetVertexData().SetPedigreeIds( vertID1 )
+    for i in range(10):
+        G1.AddVertex()
+        vertID1.InsertNextValue(i)
+    for i in range(10):
+        G1.AddGraphEdge(i, (i+1)%10)
+
+    #----------------------------------------------------------
+    # Create a second graph
+    # - This one is a triangle, with one node's pedigree id field
+    #   ID matching one of the vertices from G1.  These nodes will
+    #   be combined as the same node when merge is run.
+    vertID2 = vtkIntArray()
+    G2 = vtkMutableDirectedGraph()
+    vertID2 = vtkIntArray()
+    vertID2.SetName("ID")
+    G2.GetVertexData().AddArray(vertID2)
+    G2.GetVertexData().SetPedigreeIds(vertID2)
+    G2.AddVertex()
+    vertID2.InsertNextValue(3)
+    G2.AddVertex()
+    vertID2.InsertNextValue(20)
+    G2.AddVertex()
+    vertID2.InsertNextValue(21)
+    G2.AddGraphEdge(0,1)
+    G2.AddGraphEdge(0,2)
+    G2.AddGraphEdge(1,2)
+
+    #----------------------------------------------------------
+    # First Programmable Filter -- Add integer field to vertices
+    # with a 1 for every vertex into G1
+    G1_labeled = vtkProgrammableFilter()
+    G1_labeled.AddInputData( G1 )
+
+    def vertex_labeler_g1():
+        input = G1_labeled.GetInput()
+        output = G1_labeled.GetOutput()
+        output.ShallowCopy(input)
+        varray = vtkIntArray()
+        varray.SetName("color")
+
+        varray.SetNumberOfTuples( output.GetNumberOfVertices() )
+        for i in range( output.GetNumberOfVertices() ):
+            varray.SetValue(i, 1)
+
+        output.GetVertexData().AddArray(varray)
+
+    G1_labeled.SetExecuteMethod( vertex_labeler_g1 )
+
+
+
+    #----------------------------------------------------------
+    # Second Programmable Filter -- Add integer field to vertices
+    # with a 2 for every vertex into G2
+    G2_labeled = vtkProgrammableFilter()
+    G2_labeled.AddInputData( G2 )
+
+    def vertex_labeler_g2():
+        input = G2_labeled.GetInput()
+        output = G2_labeled.GetOutput()
+        output.ShallowCopy(input)
+        varray = vtkIntArray()
+        varray.SetName("color")
+
+        varray.SetNumberOfTuples( output.GetNumberOfVertices() )
+        for i in range( output.GetNumberOfVertices() ):
+            varray.SetValue(i, 2)
+
+        output.GetVertexData().AddArray(varray)
+
+    G2_labeled.SetExecuteMethod( vertex_labeler_g2 )
+
+
+    #----------------------------------------------------------
+    # Merge graphs takes two graphs on input ports 0 and 1.
+    # and combines them according to the pedigree id field.
+    merge = vtkMergeGraphs()
+    merge.SetInputConnection(0, G1_labeled.GetOutputPort() )
+    merge.SetInputConnection(1, G2_labeled.GetOutputPort() )
+    merge.Update()
+
+
+
+    #----------------------------------------------------------
+    # Draw the graph in a window
+    theme = vtkViewTheme.CreateMellowTheme()
+    theme.SetLineWidth(4)
+    theme.SetPointSize(15)
+    theme.SetCellOpacity(1)
+    theme.FastDelete()
+
+    # Rendered graph representation to make vertices circles
+    rep = vtkRenderedGraphRepresentation(  )
+    rep.SetInputConnection(0, merge.GetOutputPort())
+
+    # vtkGraphToGlyph::CIRCLE == 7
+    rep.SetGlyphType(7)
+
+    # View containing the merged graph
+    view = vtkGraphLayoutView()
+    view.SetRepresentation( rep )
+    view.SetVertexLabelArrayName("ID")
+    view.SetVertexColorArrayName("color")
+    view.SetVertexLabelVisibility(True)
+    view.SetColorVertices(True)
+    view.SetLayoutStrategyToSimple2D()
+    view.SetVertexLabelFontSize(20)
+    view.ApplyViewTheme(theme)
+
+
+
+    view.GetRenderWindow().SetSize(xdim, ydim)
+    view.ResetCamera()
+    view.Render()
+
+
+    view.GetInteractor().Start()