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package require vtk
package require vtkinteraction
package require vtktesting
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# read data
#
vtkOBJReader wavefront
wavefront SetFileName "$VTK_DATA_ROOT/Data/Viewpoint/cow.obj"
wavefront Update
vtkConeSource cone
cone SetResolution 6
cone SetRadius .1
vtkTransform transform
transform Translate 0.5 0.0 0.0
vtkTransformPolyDataFilter transformF
transformF SetInputConnection [cone GetOutputPort]
transformF SetTransform transform
# we just clean the normals for efficiency (keep down number of cones)
vtkCleanPolyData clean
clean SetInputConnection [wavefront GetOutputPort]
vtkHedgeHog glyph
glyph SetInputConnection [clean GetOutputPort]
glyph SetVectorModeToUseNormal
glyph SetScaleFactor 0.4
vtkPolyDataMapper hairMapper
hairMapper SetInputConnection [glyph GetOutputPort]
vtkActor hair
hair SetMapper hairMapper
vtkPolyDataMapper cowMapper
cowMapper SetInputConnection [wavefront GetOutputPort]
vtkActor cow
cow SetMapper cowMapper
# Add the actors to the renderer, set the background and size
#
ren1 AddActor cow
ren1 AddActor hair
ren1 ResetCamera
[ren1 GetActiveCamera] Dolly 2
[ren1 GetActiveCamera] Azimuth 30
[ren1 GetActiveCamera] Elevation 30
ren1 ResetCameraClippingRange
eval [hair GetProperty] SetDiffuseColor $saddle_brown
eval [hair GetProperty] SetAmbientColor $thistle
eval [hair GetProperty] SetAmbient .3
eval [cow GetProperty] SetDiffuseColor $beige
renWin SetSize 320 240
ren1 SetBackground .1 .2 .4
iren Initialize
renWin Render
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up then start the event loop
wm withdraw .
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