Re: [MacPerl] Presenting MPFE

["Patton, Paul B (MN10)" <paul.b.patton@hbc.honeywell.com>]

This is not directly about MacPerl, but it may provide useful information
related to Kevin Reid's recent posting of his "MacPerl Fractal Explorer
(MPFE) v1.0" program.  (Thanks Kevin!)
 
The MandelZot program by Dave Platt (not written in Perl, probably C)
allows interactive exploration of the Mandelbrot set, Julia sets, Newton
method iterations, and 9 others built-in, plus it allows you to explore
any iterative equations you define. Custom color, animation, zoom, etc.,
are all very well done.  The docs describe some of the algorithms,
perhaps with sufficient detail to implement in MacPerl.  In particular,
the equation for a Julia set is very similar to the equation for the
Mandlebrot set, differing in only one term.

It was kind of hard to find MandelZot just now - I got a lot of 404's
trying to locate a downloadable copy - but I did finally turn up a
"public" source that still has it:

   http://www.utexas.edu/ftp/microlib/mac/application/

Note there are two files: the app and the docs.

Version 4.0.1, which is the latest released version AFAIK , circa 1994,
is a 68K implementation.  A couple of years ago I exchanged e-mail with
the author and received an alpha version of a PPC implementation called
MandelZot 5.0a6.  This version was only the APPL file, so the support
files from 4.0.1 were still needed, and it also is more limited in some
ways than 4.0.1.  Since 4.0.1 runs very well on a fast PPC, and since I
have neither an easy way to give you 5.0a6, nor the author's permission
to do so, please start with 4.0.1 if you're interested.  I haven't heard
from Dave Platt or seen any release of version 5.0.

It would probably be best to send e-mail to me personally to follow up
on this, if you want to, unless your follow-up involves MacPerl.

   -Paul-       paul.b.patton@hbc.honeywell.com

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