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/BoxWidget.py

@@ -0,0 +1,86 @@
+#!/usr/bin/env python
+
+# Demonstrate how to use the vtkBoxWidget 3D widget. This script uses
+# a 3D box widget to define a "clipping box" to clip some simple
+# geometry (a mace). Make sure that you hit the "i" key to activate
+# the widget.
+
+import vtk
+
+# Create a mace out of filters.
+sphere = vtk.vtkSphereSource()
+cone = vtk.vtkConeSource()
+glyph = vtk.vtkGlyph3D()
+glyph.SetInputConnection(sphere.GetOutputPort())
+glyph.SetSourceConnection(cone.GetOutputPort())
+glyph.SetVectorModeToUseNormal()
+glyph.SetScaleModeToScaleByVector()
+glyph.SetScaleFactor(0.25)
+
+# The sphere and spikes are appended into a single polydata. This just
+# makes things simpler to manage.
+apd = vtk.vtkAppendPolyData()
+apd.AddInputConnection(glyph.GetOutputPort())
+apd.AddInputConnection(sphere.GetOutputPort())
+maceMapper = vtk.vtkPolyDataMapper()
+maceMapper.SetInputConnection(apd.GetOutputPort())
+maceActor = vtk.vtkLODActor()
+maceActor.SetMapper(maceMapper)
+maceActor.VisibilityOn()
+
+# This portion of the code clips the mace with the vtkPlanes implicit
+# function.  The clipped region is colored green.
+planes = vtk.vtkPlanes()
+clipper = vtk.vtkClipPolyData()
+clipper.SetInputConnection(apd.GetOutputPort())
+clipper.SetClipFunction(planes)
+clipper.InsideOutOn()
+selectMapper = vtk.vtkPolyDataMapper()
+selectMapper.SetInputConnection(clipper.GetOutputPort())
+selectActor = vtk.vtkLODActor()
+selectActor.SetMapper(selectMapper)
+selectActor.GetProperty().SetColor(0, 1, 0)
+selectActor.VisibilityOff()
+selectActor.SetScale(1.01, 1.01, 1.01)
+
+# Create the RenderWindow, Renderer and both Actors
+ren = vtk.vtkRenderer()
+renWin = vtk.vtkRenderWindow()
+renWin.AddRenderer(ren)
+
+iren = vtk.vtkRenderWindowInteractor()
+iren.SetRenderWindow(renWin)
+
+# The SetInteractor method is how 3D widgets are associated with the
+# render window interactor.  Internally, SetInteractor sets up a bunch
+# of callbacks using the Command/Observer mechanism (AddObserver()).
+boxWidget = vtk.vtkBoxWidget()
+boxWidget.SetInteractor(iren)
+boxWidget.SetPlaceFactor(1.25)
+
+ren.AddActor(maceActor)
+ren.AddActor(selectActor)
+
+# Add the actors to the renderer, set the background and size
+ren.SetBackground(0.1, 0.2, 0.4)
+renWin.SetSize(300, 300)
+
+# This callback funciton does the actual work: updates the vtkPlanes
+# implicit function.  This in turn causes the pipeline to update.
+def SelectPolygons(object, event):
+    # object will be the boxWidget
+    global selectActor, planes
+    object.GetPlanes(planes)
+    selectActor.VisibilityOn()
+
+glyph.Update()
+# Place the interactor initially. The input to a 3D widget is used to
+# initially position and scale the widget. The "EndInteractionEvent" is
+# observed which invokes the SelectPolygons callback.
+boxWidget.SetInputConnection(glyph.GetOutputPort())
+boxWidget.PlaceWidget()
+boxWidget.AddObserver("EndInteractionEvent", SelectPolygons)
+
+iren.Initialize()
+renWin.Render()
+iren.Start()