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Old 10th November 2005, 21:47   #12
Major Dude
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Join Date: Jan 2005
Location: I was hoping you could tell me
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Originally posted by Tuggummi
I can't even figure out why something like

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.
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