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/GUI/Python/SphereWidget.py

@@ -0,0 +1,114 @@
+#!/usr/bin/env python
+
+# This example demonstrates how to use the vtkSphereWidget to control
+# the position of a light.
+
+import vtk
+from vtk.util.misc import vtkGetDataRoot
+VTK_DATA_ROOT = vtkGetDataRoot()
+
+# Start by loading some data.
+dem = vtk.vtkDEMReader()
+dem.SetFileName(VTK_DATA_ROOT + "/Data/SainteHelens.dem")
+dem.Update()
+
+Scale = 2
+lut = vtk.vtkLookupTable()
+lut.SetHueRange(0.6, 0)
+lut.SetSaturationRange(1.0, 0)
+lut.SetValueRange(0.5, 1.0)
+
+lo = Scale*dem.GetElevationBounds()[0]
+hi = Scale*dem.GetElevationBounds()[1]
+
+shrink = vtk.vtkImageShrink3D()
+shrink.SetShrinkFactors(4, 4, 1)
+shrink.SetInputConnection(dem.GetOutputPort())
+shrink.AveragingOn()
+
+geom = vtk.vtkImageDataGeometryFilter()
+geom.SetInputConnection(shrink.GetOutputPort())
+geom.ReleaseDataFlagOn()
+
+warp = vtk.vtkWarpScalar()
+warp.SetInputConnection(geom.GetOutputPort())
+warp.SetNormal(0, 0, 1)
+warp.UseNormalOn()
+warp.SetScaleFactor(Scale)
+warp.ReleaseDataFlagOn()
+
+elevation = vtk.vtkElevationFilter()
+elevation.SetInputConnection(warp.GetOutputPort())
+elevation.SetLowPoint(0, 0, lo)
+elevation.SetHighPoint(0, 0, hi)
+elevation.SetScalarRange(lo, hi)
+elevation.ReleaseDataFlagOn()
+
+normals = vtk.vtkPolyDataNormals()
+normals.SetInputConnection(elevation.GetOutputPort())
+normals.SetFeatureAngle(60)
+normals.ConsistencyOff()
+normals.SplittingOff()
+normals.ReleaseDataFlagOn()
+
+demMapper = vtk.vtkPolyDataMapper()
+demMapper.SetInputConnection(normals.GetOutputPort())
+demMapper.SetScalarRange(lo, hi)
+demMapper.SetLookupTable(lut)
+demMapper.ImmediateModeRenderingOn()
+
+demActor = vtk.vtkLODActor()
+demActor.SetMapper(demMapper)
+
+# Create the RenderWindow, Renderer and both Actors
+ren = vtk.vtkRenderer()
+renWin = vtk.vtkRenderWindow()
+renWin.AddRenderer(ren)
+iren = vtk.vtkRenderWindowInteractor()
+iren.SetRenderWindow(renWin)
+iren.LightFollowCameraOff()
+iren.SetInteractorStyle(None)
+
+# Associate the line widget with the interactor
+sphereWidget = vtk.vtkSphereWidget()
+sphereWidget.SetInteractor(iren)
+sphereWidget.SetProp3D(demActor)
+sphereWidget.SetPlaceFactor(4)
+sphereWidget.PlaceWidget()
+sphereWidget.TranslationOff()
+sphereWidget.ScaleOff()
+sphereWidget.HandleVisibilityOn()
+
+# Uncomment the next line if you want to see the widget active when
+# the script starts
+#sphereWidget.EnabledOn()
+
+# Actually probe the data
+def MoveLight(obj, event):
+    global light
+    light.SetPosition(obj.GetHandlePosition())
+
+sphereWidget.AddObserver("InteractionEvent", MoveLight)
+
+# Add the actors to the renderer, set the background and size
+ren.AddActor(demActor)
+ren.SetBackground(1, 1, 1)
+renWin.SetSize(300, 300)
+ren.SetBackground(0.1, 0.2, 0.4)
+
+cam1 = ren.GetActiveCamera()
+cam1.SetViewUp(0, 0, 1)
+cam1.SetFocalPoint(dem.GetOutput().GetCenter())
+cam1.SetPosition(1, 0, 0)
+ren.ResetCamera()
+cam1.Elevation(25)
+cam1.Azimuth(125)
+cam1.Zoom(1.25)
+
+light = vtk.vtkLight()
+light.SetFocalPoint(dem.GetOutput().GetCenter())
+ren.AddLight(light)
+
+iren.Initialize()
+renWin.Render()
+iren.Start()