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68 lines
1.8 KiB
68 lines
1.8 KiB
2 years ago
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package require vtk
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package require vtkinteraction
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# Example demonstrates how to generate a 3D tetrahedra mesh from a volume. This example
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# differs from clipVolume.tcl in that the mesh is generated within a range of contour values.
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#
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# Quadric definition
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vtkQuadric quadric
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quadric SetCoefficients .5 1 .2 0 .1 0 0 .2 0 0
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vtkSampleFunction sample
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sample SetSampleDimensions 20 20 20
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sample SetImplicitFunction quadric
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sample ComputeNormalsOff
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# Program a bandpass filter to clip a range of data. What we do is transform the
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# scalars so that values lying betweeen (minRange,maxRange) are >= 0.0; all
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# others are < 0.0,
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vtkImplicitDataSet dataset
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dataset SetDataSet [sample GetOutput]
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vtkImplicitWindowFunction window
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window SetImplicitFunction dataset
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window SetWindowRange 0.5 1.0
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# Generate tetrahedral mesh
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vtkClipVolume clip
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clip SetInputConnection [sample GetOutputPort]
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clip SetClipFunction window
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clip SetValue 0.0
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clip GenerateClippedOutputOff
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vtkDataSetMapper clipMapper
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clipMapper SetInputConnection [clip GetOutputPort]
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clipMapper ScalarVisibilityOff
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vtkActor clipActor
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clipActor SetMapper clipMapper
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[clipActor GetProperty] SetColor .8 .4 .4
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# Create outline
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vtkOutlineFilter outline
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outline SetInput [clip GetInput]
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vtkPolyDataMapper outlineMapper
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outlineMapper SetInputConnection [outline GetOutputPort]
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vtkActor outlineActor
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outlineActor SetMapper outlineMapper
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eval [outlineActor GetProperty] SetColor 0 0 0
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# Define graphics objects
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vtkRenderer ren1
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vtkRenderWindow renWin
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renWin AddRenderer ren1
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vtkRenderWindowInteractor iren
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iren SetRenderWindow renWin
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ren1 SetBackground 1 1 1
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ren1 AddActor clipActor
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ren1 AddActor outlineActor
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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iren Initialize
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wm withdraw .
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