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/BandContourTerrain.py

@@ -0,0 +1,149 @@
+#!/usr/bin/env python
+
+# In this example we show the use of the
+# vtkBandedPolyDataContourFilter.  This filter creates separate,
+# constant colored bands for a range of scalar values. Each band is
+# bounded by two scalar values, and the cell data laying within the
+# value has the same cell scalar value.
+
+import vtk
+from vtk.util.misc import vtkGetDataRoot
+VTK_DATA_ROOT = vtkGetDataRoot()
+
+
+# The lookup table is similar to that used by maps. Two hues are used:
+# a brown for land, and a blue for water. The value of the hue is
+# changed to give the effect of elevation.
+Scale = 5
+lutWater = vtk.vtkLookupTable()
+lutWater.SetNumberOfColors(10)
+lutWater.SetHueRange(0.58, 0.58)
+lutWater.SetSaturationRange(0.5, 0.1)
+lutWater.SetValueRange(0.5, 1.0)
+lutWater.Build()
+lutLand = vtk.vtkLookupTable()
+lutLand.SetNumberOfColors(10)
+lutLand.SetHueRange(0.1, 0.1)
+lutLand.SetSaturationRange(0.4, 0.1)
+lutLand.SetValueRange(0.55, 0.9)
+lutLand.Build()
+
+
+# The DEM reader reads data and creates an output image.
+demModel = vtk.vtkDEMReader()
+demModel.SetFileName(VTK_DATA_ROOT + "/Data/SainteHelens.dem")
+demModel.Update()
+
+# We shrink the terrain data down a bit to yield better performance for
+# this example.
+shrinkFactor = 4
+shrink = vtk.vtkImageShrink3D()
+shrink.SetShrinkFactors(shrinkFactor, shrinkFactor, 1)
+shrink.SetInputConnection(demModel.GetOutputPort())
+shrink.AveragingOn()
+
+# Convert the image into polygons.
+geom = vtk.vtkImageDataGeometryFilter()
+geom.SetInputConnection(shrink.GetOutputPort())
+
+# Warp the polygons based on elevation.
+warp = vtk.vtkWarpScalar()
+warp.SetInputConnection(geom.GetOutputPort())
+warp.SetNormal(0, 0, 1)
+warp.UseNormalOn()
+warp.SetScaleFactor(Scale)
+
+# Create the contour bands.
+bcf = vtk.vtkBandedPolyDataContourFilter()
+bcf.SetInputConnection(warp.GetOutputPort())
+bcf.GenerateValues(15, demModel.GetOutput().GetScalarRange())
+bcf.SetScalarModeToIndex()
+bcf.GenerateContourEdgesOn()
+
+# Compute normals to give a better look.
+normals = vtk.vtkPolyDataNormals()
+normals.SetInputConnection(bcf.GetOutputPort())
+normals.SetFeatureAngle(60)
+normals.ConsistencyOff()
+normals.SplittingOff()
+
+demMapper = vtk.vtkPolyDataMapper()
+demMapper.SetInputConnection(normals.GetOutputPort())
+demMapper.SetScalarRange(0, 10)
+demMapper.SetLookupTable(lutLand)
+demMapper.SetScalarModeToUseCellData()
+
+demActor = vtk.vtkLODActor()
+demActor.SetMapper(demMapper)
+
+## Create contour edges
+edgeMapper = vtk.vtkPolyDataMapper()
+edgeMapper.SetInputConnection(bcf.GetOutputPort())
+edgeMapper.SetResolveCoincidentTopologyToPolygonOffset()
+edgeActor = vtk.vtkActor()
+edgeActor.SetMapper(edgeMapper)
+edgeActor.GetProperty().SetColor(0, 0, 0)
+
+## Test clipping
+# Create the contour bands.
+bcf2 = vtk.vtkBandedPolyDataContourFilter()
+bcf2.SetInputConnection(warp.GetOutputPort())
+bcf2.ClippingOn()
+bcf2.GenerateValues(10, 1000, 2000)
+bcf2.SetScalarModeToValue()
+
+# Compute normals to give a better look.
+normals2 = vtk.vtkPolyDataNormals()
+normals2.SetInputConnection(bcf2.GetOutputPort())
+normals2.SetFeatureAngle(60)
+normals2.ConsistencyOff()
+normals2.SplittingOff()
+
+lut = vtk.vtkLookupTable()
+lut.SetNumberOfColors(10)
+demMapper2 = vtk.vtkPolyDataMapper()
+demMapper2.SetInputConnection(normals2.GetOutputPort())
+demMapper2.SetScalarRange(demModel.GetOutput().GetScalarRange())
+demMapper2.SetLookupTable(lut)
+demMapper2.SetScalarModeToUseCellData()
+
+demActor2 = vtk.vtkLODActor()
+demActor2.SetMapper(demMapper2)
+demActor2.AddPosition(0, 15000, 0)
+
+# Create the RenderWindow, Renderer and both Actors
+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(demActor)
+ren.AddActor(demActor2)
+ren.AddActor(edgeActor)
+
+ren.SetBackground(.4, .4, .4)
+renWin.SetSize(375, 200)
+
+cam = vtk.vtkCamera()
+cam.SetPosition(-17438.8, 2410.62, 25470.8)
+cam.SetFocalPoint(3985.35, 11930.6, 5922.14)
+cam.SetViewUp(0, 0, 1)
+ren.SetActiveCamera(cam)
+ren.ResetCamera()
+cam.Zoom(2)
+
+iren.Initialize()
+iren.SetDesiredUpdateRate(1)
+
+def CheckAbort(obj, event):
+    foo = renWin.GetEventPending()
+    if foo != 0:
+        renWin.SetAbortRender(1)
+
+renWin.AddObserver("AbortCheckEvent", CheckAbort)
+renWin.Render()
+
+renWin.Render()
+iren.Start()