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64 lines
1.7 KiB
64 lines
1.7 KiB
2 years ago
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#
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# This simple example shows how to render a very large image (i.e., one
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# that cannot fit on the screen).
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#
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# We start off by loading some Tcl modules. One is the basic VTK library;
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# the second is a package for rendering, and the last includes a set
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# of color definitions.
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#
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package require vtk
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package require vtkinteraction
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package require vtktesting
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# We'll import some data to start. Since we are using an importer, we've
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# got to give it a render window and such. Note that the render window
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# size is set fairly small.
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vtkRenderer ren
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ren SetBackground 0.1 0.2 0.4
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vtkRenderWindow renWin
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renWin AddRenderer ren
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renWin SetSize 125 125
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vtkRenderWindowInteractor iren
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iren SetRenderWindow renWin
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vtk3DSImporter importer
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importer SetRenderWindow renWin
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importer SetFileName "$VTK_DATA_ROOT/Data/Viewpoint/iflamigm.3ds"
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importer ComputeNormalsOn
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importer Read
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# We'll set up the view we want.
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#
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[ren GetActiveCamera] SetPosition 0 1 0
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[ren GetActiveCamera] SetFocalPoint 0 0 0
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[ren GetActiveCamera] SetViewUp 0 0 1
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# Let the renderer compute a good position and focal point.
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#
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ren ResetCamera
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[ren GetActiveCamera] Dolly 1.4
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ren ResetCameraClippingRange
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# render the large image
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#
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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wm withdraw .
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# Here we request that the large image is four times bigger than the
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# renderers image.
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#
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vtkRenderLargeImage renderLarge
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renderLarge SetInput ren
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renderLarge SetMagnification 4
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# We write out the image which causes the rendering to occur. If you
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# watch your screen you will see the pieces being rendered right after
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# one another.
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#
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vtkTIFFWriter writer
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writer SetInputConnection [renderLarge GetOutputPort]
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writer SetFileName largeImage.tif
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writer Write
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