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/labels.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python
+
+import random
+from vtk import *
+
+n = 10000
+
+qinit = vtkQtInitialization()
+
+pd = vtkPolyData()
+pts = vtkPoints()
+verts = vtkCellArray()
+orient = vtkDoubleArray()
+orient.SetName('orientation')
+label = vtkStringArray()
+label.SetName('label')
+for i in range(n):
+  pts.InsertNextPoint(random.random(), random.random(), random.random())
+  verts.InsertNextCell(1)
+  verts.InsertCellPoint(i)
+  orient.InsertNextValue(random.random()*360.0)
+  label.InsertNextValue(str(i))
+
+pd.SetPoints(pts)
+pd.SetVerts(verts)
+pd.GetPointData().AddArray(label)
+pd.GetPointData().AddArray(orient)
+
+hier = vtkPointSetToLabelHierarchy()
+hier.SetInputData(pd)
+hier.SetOrientationArrayName('orientation')
+hier.SetLabelArrayName('label')
+hier.GetTextProperty().SetColor(0.0, 0.0, 0.0)
+
+lmapper = vtkLabelPlacementMapper()
+lmapper.SetInputConnection(hier.GetOutputPort())
+strategy = vtkQtLabelRenderStrategy()
+lmapper.SetRenderStrategy(strategy)
+lmapper.SetShapeToRoundedRect()
+lmapper.SetBackgroundColor(1.0, 1.0, 0.7)
+lmapper.SetBackgroundOpacity(0.8)
+lmapper.SetMargin(3)
+
+lactor = vtkActor2D()
+lactor.SetMapper(lmapper)
+
+mapper = vtkPolyDataMapper()
+mapper.SetInputData(pd)
+actor = vtkActor()
+actor.SetMapper(mapper)
+
+ren = vtkRenderer()
+ren.AddActor(lactor)
+ren.AddActor(actor)
+ren.ResetCamera()
+
+win = vtkRenderWindow()
+win.AddRenderer(ren)
+
+iren = vtkRenderWindowInteractor()
+iren.SetRenderWindow(win)
+
+iren.Initialize()
+iren.Start()
+