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package require vtk
package require vtkinteraction
set file0 ugFile0.vtu
set file1 ugFile1.vtu
set file2 ugFile2.vtu
# read in some unstructured grid data
vtkUnstructuredGridReader ugReader
ugReader SetFileName "$VTK_DATA_ROOT/Data/blow.vtk"
ugReader SetScalarsName "thickness9"
ugReader SetVectorsName "displacement9"
vtkExtractUnstructuredGridPiece extract
extract SetInputConnection [ugReader GetOutputPort]
# write various versions
vtkXMLUnstructuredGridWriter ugWriter
ugWriter SetFileName $file0
ugWriter SetDataModeToAscii
ugWriter SetInputConnection [ugReader GetOutputPort]
ugWriter Write
ugWriter SetFileName $file1
ugWriter SetInputConnection [extract GetOutputPort]
ugWriter SetDataModeToAppended
ugWriter SetNumberOfPieces 2
ugWriter Write
ugWriter SetFileName $file2
ugWriter SetDataModeToBinary
ugWriter SetGhostLevel 2
ugWriter Write
# read the ASCII version
vtkXMLUnstructuredGridReader reader
reader SetFileName $file0
reader Update
vtkUnstructuredGrid ug0
ug0 DeepCopy [reader GetOutput]
vtkDataSetSurfaceFilter sF
sF SetInput ug0
vtkPolyDataMapper mapper0
mapper0 SetInputConnection [sF GetOutputPort]
vtkActor actor0
actor0 SetMapper mapper0
actor0 SetPosition 0 40 20
# read appended piece 0
reader SetFileName $file1
vtkDataSetSurfaceFilter sF1
sF1 SetInputConnection [reader GetOutputPort]
vtkPolyDataMapper mapper1
mapper1 SetInputConnection [sF1 GetOutputPort]
mapper1 SetPiece 1
mapper1 SetNumberOfPieces 2
vtkActor actor1
actor1 SetMapper mapper1
# read binary piece 0 (with ghost level)
vtkXMLUnstructuredGridReader reader2
reader2 SetFileName $file2
vtkDataSetSurfaceFilter sF2
sF2 SetInputConnection [reader2 GetOutputPort]
vtkPolyDataMapper mapper2
mapper2 SetInputConnection [sF2 GetOutputPort]
mapper2 SetPiece 1
mapper2 SetNumberOfPieces 2
mapper2 SetGhostLevel 2
vtkActor actor2
actor2 SetMapper mapper2
actor2 SetPosition 0 0 30
# Create the RenderWindow, Renderer and both Actors
#
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 actor0
ren1 AddActor actor1
ren1 AddActor actor2
ren1 ResetCamera
[ren1 GetActiveCamera] SetPosition 180 55 65
[ren1 GetActiveCamera] SetFocalPoint 3.5 32 15
renWin SetSize 300 300
iren Initialize
renWin Render
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up then start the event loop
wm withdraw .
file delete -force $file0
file delete -force $file1
file delete -force $file2
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