vtkmyex2.tcl

a very goog book

#
# This example creates a polygonal model of a cone, and then rendered it to
# the screen. It willrotate the cone 360 degrees and then exit. The basic
# setup of source -> mapper -> actor -> renderer -> renderwindow is 
# typical of most VTK programs.
#

#
# Do not forget to add the path to the Wrapping/Tcl directory to your 
# TCLLIBPATH environment variable. Use forward slash / instead of \ 
# and quote (") path containing spaces. 
# Also check that the path to your DLL (i.e. your build dir) is also
# in your PATH environment variable.
# 

#
# First we include the Tcl packages which will make available 
# all of the vtk commands to Tcl
#
package require vtkmy

#
# Next we create an instance of vtkConeSource and set some of its 
# properties
#
vtkConeSource cone
cone SetHeight 3.0
cone SetRadius 1.0
cone SetResolution 10

#
# We create an instance of vtkPolyDataMapper to map the polygonal data 
# into graphics primitives. We connect the output of the cone souece 
# to the input of this mapper 
#
vtkPolyDataMapper coneMapper
coneMapper SetInput [cone GetOutput]

#
# Create an actor to represent the cone. The actor coordinates rendering of
# the graphics primitives for a mapper. We set this actor's mapper to be
# coneMapper which we created above.
#
vtkActor coneActor
coneActor SetMapper coneMapper

#
# Create the Renderer and assign actors to it. A renderer is like a
# viewport. It is part or all of a window on the screen and it is responsible
# for drawing the actors it has.  We also set the background color here
#
vtkRenderer ren1 
ren1 AddActor coneActor
ren1 SetBackground 0.1 0.2 0.4

#
# Finally we create the render window which will show up on the screen
# We put our renderer into the render window using AddRenderer. We also
# set the size to be 300 pixels by 300
#
vtkRenderWindow renWin
renWin AddRenderer ren1
renWin SetSize 300 300

#
# Now we loop over 360 degreeees and render the cone each time
#
for {set i 0} {$i < 360} {incr i} {
   # Render the image and rotate the active camera by one degree
   renWin Render
   [ren1 GetActiveCamera] Azimuth 1
}

#
# Free up any objects we created
#
vtkCommand DeleteAllObjects

#
# Exit the application
#
exit