[PD] bouncing

Mathieu Bouchard matju at artengine.ca
Sat Oct 13 18:33:59 CEST 2007

On Sat, 13 Oct 2007, marius schebella wrote:

> how would you call the angle/gradient that the equation has.

a direction... and i would probably express it as a pair of numbers, 
cos(angle) and sin(angle), because that scales better to 3-D later on, and 
also it's better to keep everything as cartesian than work with actual 
angles. (it's less trouble, even though polar forms might look easier at 

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