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/Tcl/VisQuad.tcl

@@ -0,0 +1,65 @@
+# This example demonstrates the use of the contour filter, and the use of
+# the vtkSampleFunction to generate a volume of data samples from an
+# implicit function.
+
+#
+# First we include the VTK Tcl packages which will make available
+# all of the vtk commands from Tcl. The vtkinteraction package defines
+# a simple Tcl/Tk interactor widget.
+#
+package require vtk
+package require vtkinteraction
+
+# VTK supports implicit functions of the form f(x,y,z)=constant. These
+# functions can represent things spheres, cones, etc. Here we use a
+# general form for a quadric to create an elliptical data field.
+vtkQuadric quadric
+  quadric SetCoefficients .5 1 .2 0 .1 0 0 .2 0 0
+
+# vtkSampleFunction samples an implicit function over the x-y-z range
+# specified (here it defaults to -1,1 in the x,y,z directions).
+vtkSampleFunction sample
+  sample SetSampleDimensions 30 30 30
+  sample SetImplicitFunction quadric
+
+# Create five surfaces F(x,y,z) = constant between range specified. The
+# GenerateValues() method creates n isocontour values between the range
+# specified.
+vtkContourFilter contours
+  contours SetInputConnection [sample GetOutputPort]
+  contours GenerateValues 5 0.0 1.2
+
+vtkPolyDataMapper contMapper
+  contMapper SetInputConnection [contours GetOutputPort]
+  contMapper SetScalarRange 0.0 1.2
+
+vtkActor contActor
+  contActor SetMapper contMapper
+
+# We'll put a simple outline around the data.
+vtkOutlineFilter outline
+  outline SetInputConnection [sample GetOutputPort]
+
+vtkPolyDataMapper outlineMapper
+  outlineMapper SetInputConnection [outline GetOutputPort]
+
+vtkActor outlineActor
+  outlineActor SetMapper outlineMapper
+  eval [outlineActor GetProperty] SetColor 0 0 0
+
+# The usual rendering stuff.
+vtkRenderer ren1
+vtkRenderWindow renWin
+    renWin AddRenderer ren1
+vtkRenderWindowInteractor iren
+    iren SetRenderWindow renWin
+
+ren1 SetBackground 1 1 1
+ren1 AddActor contActor
+ren1 AddActor outlineActor
+
+iren AddObserver UserEvent {wm deiconify .vtkInteract}
+iren Initialize
+
+wm withdraw .
+iren Start