[Visualpython-users] redblue stereo

[Bruce S. <bas...@un...>]

Actually already in the new version there exist the options scene.stereo 
= 'redblue' (and also scene.stereo = 'redcyan'), intended to make stereo 
images viewable with simple red/blue glasses (red over the left eye). 
For redblue to work the scene has to be grayscale, not color, and 
therein lies a design issue, because there is more than one way to 
convert colors to grayscale, and the conversion depends somewhat on 
context. In order to enable lots of people to participate in the 
discussion of what conversion (or conversion options, plural) is/are 
appropriate, there is a grayscale conversion routine now available in 
the "Contributed programs" section of http://vpython.org.

You can run it directly (it has a test scene in it), or you can say

from visual import *
from grayscale import *

scene.stereo = 'redblue' # or 'redcyan'
# make a color scene
grayscale(scene)
# do animation, etc. in 3D using red-blue glasses

See the comments in the program for more about the issues. Or maybe Hugh 
Fisher or John Zelle will offer a tutorial here.

Bruce Sherwood