Re: [pygame] Bouncing ball - separating the physics from the frame rate

[Casey Duncan <casey@xxxxxxxxxxx>]

On Dec 3, 2007, at 12:30 PM, Ian Mallett wrote:

> On 12/3/07, Matt Smith <matt@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > > if it bounces a couple of times inside one
> > > time-frame) (http://hyperphysics.phy-astr.gsu.edu/hbase/ 
> > > hframe.html for
> > > a good physics reference, also, choose radians, steer away from  
> > > degrees
> > > http://en.wikipedia.org/wiki/Sine)
> Yep, and if you want to do trig functions in Python with the 'Math'
> module with degrees, you must convert to radians.
> math.cos(math.radians(blah))
> math.degrees(math.cos(blah))

Except that the output of sine/cos is not an angle, thus calling  
math.degrees() on it makes little sense. Honestly I find it easier to  
just use radians all the time rather than convert back and forth,  
except for a few pygame methods that take degrees...

-Casey