Subject:
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RE: Spirograph Formulas??
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 19 May 2000 22:59:39 GMT
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Original-From:
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David Bakin <davidbak@microsoft.*AvoidSpam*com>
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Viewed:
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771 times
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You might enjoy the book "Turtle Graphics" -
http://www.amazon.com/exec/obidos/ASIN/0262510375/qid=958776372/sr=1-1/002-9
609530-0483465 - uses the Logo language to control robotic turtles -
descibes everything not in the mathematics of analysis but in terms of local
geometric movement. Not sure if it has spirograph in it or not, but it does
have fascinating stuff that might be fun for your robot.
-- Dave
-----Original Message-----
From: Dan Novy [mailto:nutw4dlj@idt.net]
Sent: Thursday, May 18, 2000 6:29 AM
To: lego
Subject: Spirograph Formulas??
Hi, all! My daughter and I have built a robot that holds a piece
of sidewalk chalk and draws "spirograph-like" patterns on the side
walk. No sensors, it really just executes a repeated path with an off
set. Then I remembered an old math teacher had a set of the spirographs
that he used as an extra credit assignment. That was so long ago I
can't remember what the assignment actually was, but I remember it had
something to do with predicting and graphing the patterns a spirogear
WOULD make given certain variables. Does this sound vaguely familiar to
anyone? My question is, are there basic formulas (or at least an area
of research) governing the spirograph patterns that I could translate
into code for the RCX. Right now we're having fun guessing and
adjusting different variables to get different patterns, but it would
also be fun to generate a pattern on paper with our real spirograph and
then have the RCX duplicate the same pattern only much larger in the
sidewalk chalk. If you have no idea what a spirograph toy is, I'm sure
many of us would be willing to explain. It was, and is, one of my all
time favorite toys.
--
Dan Novy
Visual Effects Technical Supervisor
Flash Film Works
dan@flashfilmworks.com
/////////////////////////////////////
Simia anaticulam caseis defricavit.
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