Re: [Visualpython-users] rotation of camera

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

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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