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/SubsampleGrid.tcl

@@ -0,0 +1,80 @@
+# This example demonstrates the subsampling of a structured grid.
+
+#
+# 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
+
+# Read some structured data.
+#
+vtkMultiBlockPLOT3DReader pl3d
+    pl3d SetXYZFileName "$VTK_DATA_ROOT/Data/combxyz.bin"
+    pl3d SetQFileName "$VTK_DATA_ROOT/Data/combq.bin"
+    pl3d SetScalarFunctionNumber 100
+    pl3d SetVectorFunctionNumber 202
+    pl3d Update
+
+set pl3dOutput [[pl3d GetOutput] GetBlock 0]
+
+# Here we subsample the grid. The SetVOI method requires six values
+# specifying (imin,imax, jmin,jmax, kmin,kmax) extents. In this example
+# we extracting a plane. Note that the VOI is clamped to zero (min) and
+# the maximum i-j-k value; that way we can use the -1000,1000 specification
+# and be sure the values are clamped. The SampleRate specifies that we take
+# every point in the i-direction; every other point in the j-direction; and
+# every third point in the k-direction. IncludeBoundaryOn makes sure that we
+# get the boundary points even if the SampleRate does not coincident with
+# the boundary.
+#
+vtkExtractGrid extract
+    extract SetInputData $pl3dOutput
+    extract SetVOI 30 30 -1000 1000 -1000 1000
+    extract SetSampleRate 1 2 3
+    extract IncludeBoundaryOn
+vtkDataSetMapper mapper
+    mapper SetInputConnection [extract GetOutputPort]
+    mapper SetScalarRange .18 .7
+vtkActor actor
+    actor SetMapper mapper
+
+vtkStructuredGridOutlineFilter outline
+    outline SetInputData $pl3dOutput
+vtkPolyDataMapper outlineMapper
+    outlineMapper SetInputConnection [outline GetOutputPort]
+vtkActor outlineActor
+    outlineActor SetMapper outlineMapper
+    [outlineActor GetProperty] SetColor 0 0 0
+
+# Add the usual rendering stuff.
+#
+vtkRenderer ren1
+vtkRenderWindow renWin
+    renWin AddRenderer ren1
+vtkRenderWindowInteractor iren
+    iren SetRenderWindow renWin
+
+# Add the actors to the renderer, set the background and size
+#
+ren1 AddActor outlineActor
+ren1 AddActor actor
+
+ren1 SetBackground 1 1 1
+renWin SetSize 300 180
+
+set cam1 [ren1 GetActiveCamera]
+$cam1 SetClippingRange 2.64586 47.905
+$cam1 SetFocalPoint 8.931 0.358127 31.3526
+$cam1 SetPosition 29.7111 -0.688615 37.1495
+$cam1 SetViewUp -0.268328 0.00801595 0.963294
+
+# render the image
+#
+iren AddObserver UserEvent {wm deiconify .vtkInteract}
+renWin Render
+
+# prevent the tk window from showing up then start the event loop
+wm withdraw .
+iren Start