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/VisualizationAlgorithms/Python/ExtractUGrid.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python
+
+# This example shows how to extract portions of an unstructured grid
+# using vtkExtractUnstructuredGrid. vtkConnectivityFilter is also used
+# to extract connected components.
+#
+# The data found here represents a blow molding process. Blow molding
+# requires a mold and parison (hot, viscous plastic) which is shaped
+# by the mold into the final form. The data file contains several steps
+# in time for the analysis.
+
+import vtk
+from vtk.util.misc import vtkGetDataRoot
+VTK_DATA_ROOT = vtkGetDataRoot()
+
+# Create a reader to read the unstructured grid data. We use a
+# vtkDataSetReader which means the type of the output is unknown until
+# the data file is read. So we follow the reader with a
+# vtkCastToConcrete and cast the output to vtkUnstructuredGrid.
+reader = vtk.vtkDataSetReader()
+reader.SetFileName(VTK_DATA_ROOT + "/Data/blow.vtk")
+reader.SetScalarsName("thickness9")
+reader.SetVectorsName("displacement9")
+castToUnstructuredGrid = vtk.vtkCastToConcrete()
+castToUnstructuredGrid.SetInputConnection(reader.GetOutputPort())
+warp = vtk.vtkWarpVector()
+warp.SetInputConnection(castToUnstructuredGrid.GetOutputPort())
+
+# The connectivity filter extracts the first two regions. These are
+# know to represent the mold.
+connect = vtk.vtkConnectivityFilter()
+
+connect.SetInputConnection(warp.GetOutputPort())
+connect.SetExtractionModeToSpecifiedRegions()
+connect.AddSpecifiedRegion(0)
+connect.AddSpecifiedRegion(1)
+moldMapper = vtk.vtkDataSetMapper()
+moldMapper.SetInputConnection(reader.GetOutputPort())
+moldMapper.ScalarVisibilityOff()
+moldActor = vtk.vtkActor()
+moldActor.SetMapper(moldMapper)
+moldActor.GetProperty().SetColor(.2, .2, .2)
+moldActor.GetProperty().SetRepresentationToWireframe()
+
+# Another connectivity filter is used to extract the parison.
+connect2 = vtk.vtkConnectivityFilter()
+connect2.SetInputConnection(warp.GetOutputPort())
+connect2.SetExtractionModeToSpecifiedRegions()
+connect2.AddSpecifiedRegion(2)
+
+# We use vtkExtractUnstructuredGrid because we are interested in
+# looking at just a few cells. We use cell clipping via cell id to
+# extract the portion of the grid we are interested in.
+extractGrid = vtk.vtkExtractUnstructuredGrid()
+extractGrid.SetInputConnection(connect2.GetOutputPort())
+extractGrid.CellClippingOn()
+extractGrid.SetCellMinimum(0)
+extractGrid.SetCellMaximum(23)
+parison = vtk.vtkGeometryFilter()
+parison.SetInputConnection(extractGrid.GetOutputPort())
+normals2 = vtk.vtkPolyDataNormals()
+normals2.SetInputConnection(parison.GetOutputPort())
+normals2.SetFeatureAngle(60)
+lut = vtk.vtkLookupTable()
+lut.SetHueRange(0.0, 0.66667)
+parisonMapper = vtk.vtkPolyDataMapper()
+parisonMapper.SetInputConnection(normals2.GetOutputPort())
+parisonMapper.SetLookupTable(lut)
+parisonMapper.SetScalarRange(0.12, 1.0)
+parisonActor = vtk.vtkActor()
+parisonActor.SetMapper(parisonMapper)
+
+# graphics stuff
+ren = vtk.vtkRenderer()
+renWin = vtk.vtkRenderWindow()
+renWin.AddRenderer(ren)
+iren = vtk.vtkRenderWindowInteractor()
+iren.SetRenderWindow(renWin)
+
+# Add the actors to the renderer, set the background and size
+ren.AddActor(parisonActor)
+ren.AddActor(moldActor)
+ren.SetBackground(1, 1, 1)
+ren.ResetCamera()
+ren.GetActiveCamera().Azimuth(60)
+ren.GetActiveCamera().Roll(-90)
+ren.GetActiveCamera().Dolly(2)
+ren.ResetCameraClippingRange()
+renWin.SetSize(500, 375)
+
+iren.Initialize()
+renWin.Render()
+iren.Start()