Re: [Visualpython-users] rotating a scene

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

At 09:53 PM 6/4/2002 -0400, Jon Schull wrote:
>How might I programatically get a scene to continuously rotate (presumably 
>after setting userspin to 0)?

There are two answers to your question. If you want to rotate the camera 
around a fixed scene, do this:

from visual import *

cube = box()

while 1:
     rate(50)
     scene.forward = rotate(scene.forward, axis=(0,1,0), angle=0.01)

("forward" is the direction the camera is pointing in.)

If on the other hand you want to rotate the object while keeping the camera 
pointing in a fixed direction, use this loop;

while 1:
     rate(50)
     cube.rotate(axis=(0,1,0), angle=0.01)

The two versions are visually different because in the first case the 
lighting of the cube doesn't change, whereas in the second case the 
lighting does change.

Bruce Sherwood