Re: [Visualpython-users] rotation of camera

[Lenore H. <lh...@si...>]

The command "radians" which he was using to turn his degree angles  
into radian angles.

On Apr 18, 2009, at 12:48 , Bruce Sherwood wrote:

> What is there to squawk about? 90 radians is a completely legal angle.
>
> Bruce Sherwood
>
> Lenore Horner wrote:
>> VPython doesn't have a radians command to turn degrees into  
>> radians?  Shouldn't it squawk when he uses an illegal command?
>> Lenore
>> On Apr 18, 2009, at 11:40 , Bruce Sherwood wrote:
>>> The angle used by rotations must be in radians, not degrees.
>>>
>>> You want ....rotate(angle=alfa*pi/180, ....
>>>
>>> Bruce Sherwood
>>>
>>> alessandro wrote:
>>>> I want to rotate 90° around the center objects  with an  
>>>> animation. I
>>>> tried this:
>>>>
>>>>
>>>> from visual import *
>>>> ball = sphere(pos=(-5,0,0), radius=0.5, color=color.red)
>>>> wallR = box(pos=(6,0,0), size=(0.2,4,4), color=color.green)
>>>> alfa=0
>>>> while alfa < radians(90):
>>>>   rate(20)
>>>>
>>>>   scene.forward = scene.forward.rotate(angle=alfa, axis=(0,1,0))
>>>>
>>>>   alfa += radians(1)
>>>>
>>>> both the sphere & box rotate but they rotate for not only for 90°  
>>>> but
>>>> serveral time. Where is the error?
>>>>
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