Alex,
Wow! you are quick. Thanks! I will have lot of fun playing around
with that. A phase slider is a good idea so it starts out making
more circular patterns, and I guess the frequency sliders could be
played with a bit --for slight frequency differences. I will let you
know if I come up with any good combinations.
Dennis
On Jun 18, 2005, at 8:15 PM, Alex Tweedly wrote:
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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