Quote:
Originally posted by Tuggummi
I can't even figure out why something like
code:
r=i*$pi*2 ; d=0.5+v*0.5 ; x=sin(r)*d ; y=cos(r)*d
Produces a oscilliscope ring, i just know that it does.

As far as that's concerned, a parametric circle is a compilation of every possible right triangle. See here:
Circle  Sine Animation
Ok, so its scetchy, but you get the image. Draw a circle around the origin and draw a line to any point on the circle from the origin. EGAD!!! A right triangle!!! Trig explains the rest.