pre-alpha vector field DLA, with point-and-click attractors...

From	"Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid>
Newsgroups	sci.physics, comp.lang.javascript
Subject	pre-alpha vector field DLA, with point-and-click attractors...
Date	2017-09-24 21:56 -0700
Organization	n/a
Message-ID	<oqa2aa$le4$1@dont-email.me> (permalink)

Cross-posted to 2 groups.

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Fwiw, here is a rendering of a DLA cluster that was grown online:

https://plus.google.com/101799841244447089430/posts/LjJesbaokGd

in the following pre-alpha highly experimental program I created:

http://funwithfractals.atspace.cc/ct_fdla_anime_dynamic_test

The code can be streamlined quite a bit, but it should go ahead and work 
for now.

It starts off with a single strong attracting agent in the center of a 
parametric square with an equation of:

x = cos(t) * abs(cos(t))
y = sin(t) * abs(sin(t))

Particles are released from this square, and are immediately influenced 
by the center point attractor. They will hit the point and start to 
build a DLA cluster. This is all animated.

If you let the program run, it will try to fill the square with this 
single DLA cluster. However, I added the ability to click on a point, 
and create an attractor with a weaker influence than the center. You 
should be able to let it run for a little while, then click some points 
in the square and watch particles be dynamically attracted to, and hit 
them. Each hit creates a new attractor. This is how it grows.

My source code is all there.

Can anybody get it to work? Thanks.

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pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-24 21:56 -0700
  Re: pre-alpha vector field DLA, with point-and-click attractors... "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-09-25 22:00 +0200
    Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-25 13:25 -0700
      Re: pre-alpha vector field DLA, with point-and-click attractors... "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-09-25 22:36 +0200
        Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-27 13:38 -0700
  Re: pre-alpha vector field DLA, with point-and-click attractors... Une Bévue <unbewusst.sein@fai.invalid> - 2017-09-26 05:50 +0200
    Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-27 13:19 -0700

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