Dennis Brown wrote:
The math should just be a slider for frequency control of a sine
function multiplied by an initial amplitude value that is reduced
logarithmically with time based on a slider of friction value. You
need one for each axis x,y. It should be fun figuring out the math,
since you can see the results of what you are trying. As for the
Coriolis force... a slider for latitude perhaps 8^)
See Revonline, alextweedly, Harmonograph (or under Games, Harmonograph)
Simple two-pendulum harmonograph, always use a single decay rate for
both X and Y, doesn't allow you to set phase, no colours, - so lots of
chances to improve on it if you want.
But all controls are interactive - I had most fun by leaving the decay
rate at 0, setting "Draw forever" and keeping the number of lines
visible fairly small - then playing around with other values while it's
drawing.
--
Alex Tweedly http://www.tweedly.net
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