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package require vtk
package require vtkinteraction
package require vtktesting
# Common script code used to create sphere/glyph (spike)
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
iren SetDesiredUpdateRate .00001
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# Create a sphere source and actor
vtkSphereSource sphere
vtkPolyDataMapper sphereMapper
sphereMapper SetInputConnection [sphere GetOutputPort]
vtkLODActor sphereActor
sphereActor SetMapper sphereMapper
eval [sphereActor GetProperty] SetDiffuseColor $banana
eval [sphereActor GetProperty] SetSpecular .4
eval [sphereActor GetProperty] SetSpecularPower 20
# Create the spikes using a cone source and the sphere source
vtkConeSource cone
cone SetResolution 20
vtkGlyph3D glyph
glyph SetInputConnection [sphere GetOutputPort]
glyph SetSource [cone GetOutput]
glyph SetVectorModeToUseNormal
glyph SetScaleModeToScaleByVector
glyph SetScaleFactor 0.25
vtkPolyDataMapper spikeMapper
spikeMapper SetInputConnection [glyph GetOutputPort]
vtkLODActor spikeActor
spikeActor SetMapper spikeMapper
eval [spikeActor GetProperty] SetDiffuseColor $tomato
eval [spikeActor GetProperty] SetSpecular .4
eval [spikeActor GetProperty] SetSpecularPower 20
# Add the actors to the renderer, set the background and size
ren1 AddActor sphereActor
ren1 AddActor spikeActor
ren1 SetBackground 0.1 0.2 0.4
renWin SetSize 300 300
# Render the image
ren1 ResetCamera
set cam1 [ren1 GetActiveCamera]
$cam1 Zoom 1.4
$cam1 Azimuth 30
$cam1 Elevation 30
renWin Render
# Prevent the tk window from showing up then start the event loop
wm withdraw .
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