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86 lines
2.4 KiB
86 lines
2.4 KiB
2 years ago
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# This is a simple volume rendering example that
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# uses a vtkVolumeRayCast mapper
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package require vtk
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package require vtkinteraction
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# Simple volume rendering example.
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vtkImageReader reader
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reader SetDataByteOrderToLittleEndian
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reader SetDataExtent 0 63 0 63 1 93
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reader SetFilePrefix "$VTK_DATA_ROOT/Data/headsq/quarter"
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reader SetDataMask 0x7fff
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reader SetDataSpacing 2 2 1
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reader SetDataScalarTypeToUnsignedShort
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reader Update
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[reader GetOutput] SetOrigin -63 -63 -46
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# Create transfer functions for opacity and color
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vtkPiecewiseFunction opacityTransferFunction
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opacityTransferFunction AddPoint 100 0.0
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opacityTransferFunction AddPoint 2000 1.0
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vtkColorTransferFunction colorTransferFunction
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colorTransferFunction ClampingOff
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colorTransferFunction AddRGBPoint 0.0 1.00 0.0 0.0
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colorTransferFunction AddRGBPoint 1000.0 0.00 1.0 0.0
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colorTransferFunction AddRGBPoint 2000.0 0.00 0.0 1.0
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colorTransferFunction AddRGBPoint 3000.0 1.00 1.0 1.0
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colorTransferFunction AddRGBPoint 4000.0 1.00 1.0 1.0
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# colorTransferFunction SetColorSpaceToHSV
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# Create properties, mappers, volume actors, and ray cast function
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vtkVolumeProperty volumeProperty
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volumeProperty SetColor colorTransferFunction
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volumeProperty SetScalarOpacity opacityTransferFunction
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volumeProperty ShadeOn
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volumeProperty SetInterpolationTypeToLinear
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# The mapper / ray cast function know how to render the data
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vtkOpenGLVolumeShearWarpMapper volumeMapper
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volumeMapper SetInputConnection [reader GetOutputPort]
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volumeMapper FastClassificationOff
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volumeMapper SetFunctionTypeToMIP
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volumeMapper IntermixIntersectingGeometryOn
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# The volume holds the mapper and the property and
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# can be used to position/orient the volume
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vtkVolume volume
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volume SetMapper volumeMapper
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volume SetProperty volumeProperty
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vtkCamera cam
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cam ParallelProjectionOn
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# Create the standard renderer, render window
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# and interactor
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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 SetActiveCamera cam
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#ren1 AddVolume volume
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ren1 SetBackground 0.5 0.5 0.5
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renWin SetSize 600 600
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ren1 AddVolume volume
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ren1 ResetCamera
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renWin Render
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proc TkCheckAbort {} {
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set foo [renWin GetEventPending]
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if {$foo != 0} {renWin SetAbortRender 1}
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}
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renWin AddObserver AbortCheckEvent {TkCheckAbort}
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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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