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juliaseed.txt
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1994-02-05
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The Julia animation was created using the JuliaMovie.mnd2 ARexx
script, provided with Mand2000. If all of the ARexx scripts are
installed then the `Start Julia Movie' menu item in the user menu will
invoke this script.
The Julia animation demonstrates the effect that changing the
Julia seed has on the Julia set, and demonstrates the dramatic changes
that happen when the Julia seed crosses from the coloured fringes of
the Mandelbrot set into the Mandelbrot set proper. The Julia seed
value can be seen as a moving cross on the inset Mandelbrot set, and
the Julia set can be seen to explode into blackness when the seed
reaches the black area which is the actual Mandelbrot set. This
explosion of blackness is the original definition of what constitutes
the Mandelbrot set.
To re-create this movie, run Mand2000 and select New Julia from
the project menu. This will open up a Julia fractal window and a
Julia seed requester. To make the Julia window the backdrop window,
select `Backdrop' from the setup window when the Julia window is
selected. Now carefully position the Mandelbrot window, which is now
in the foreground, and the Julia seed requester. For my animation I
placed the Julia seed window behind the Mandelbrot window, where it
can not be seen. I chose not to actually close it, because then the
Julia seed would not have been displayed.
At this point you may also want to adjust the displayed location
of the Julia set by zooming or panning. Dragging with the mouse and
using the `Zoom in 10%' and `Zoom out 10%' menu options gives you very
delicate control. The best effects in Julia movies such as these
occur when the Julia and Mandelbrot sets have been zoomed in very
little.
If you want to adjust the displayed location of the Mandelbrot
set, you should either use the numeric keypad and arrow keys for
scrolling, or you should temporarily turn of `Track mouse' in the
Julia seed requester. When the `Track mouse' option is on, you can
not scroll the Mandelbrot window with the mouse, because the mouse
is used to adjust the seed location.
When all is in order and you have chosen an appropriate palette,
set the seed location you would like the movie to start with. Then
select `Start Julia Movie'. A requester will come up giving you some
instructions. Select the seed location you would like the movie to
end with, then select `Continue' on the requester with the
instructions. You will be asked whether you would like the frames
written out to an animation file by ADPro. The alternative, if you
select cancel, is to just have the individual frames written out to
the Ram Disk, for later concatenation by some anim maker program.
Your tastes may vary, but I have found that the best results are
produced when the Julia seed will be skimming along the edge of the
Mandelbrot set, without ever quite touching it, as in the example
animation.
The final question asks whether you would like full screen images
saved. If you say yes then the entire screen will be saved, including
the Mandelbrot window displaying the seed location. If you say no
then only the Julia window will be saved, and all other windows will
be ignored. To create the example animation, say yes.
At this point Mand2000 will begin generating a series of frames,
moving the Julia seed smoothly from the start point to the end point.
The individual frames will be written out to RAM:JuliaFramennnnn, with
nnnnn representing the frame number plus 10000. The number of frames
in the animation defaults to 20, but this can be changed by editing
one of the first lines in the ARexx script. If the default option of
`Create icons always' is set then postage stamp versions of the frames
can be seen by looking at the Ram Disk from the workbench for the
miniature icon versions of the pictures.
If you load these frames into any animation paint program you
should get a spectacular Julia movie.
This is all much easier to do than it sounds, and Mand2000's full
online help (select any menu item, press the help key) makes it even
easier.
This animation may be freely distributed on a non-profit basis,
as long as this complete text file is distributed with it. The images
within may be used as long as full credit is given to Cygnus Software
and Mand2000.
The demo version of Mand2000 only allows saving of small images.
The full version of Mand2000, with no image size restrictions, full
online help and much, much more, is available from Cygnus Software or
you can order it from our European distributor, ICP Verlag. Just fill
out one of these order forms:
Cygnus Software
33 University Square, #199
Madison, WI, 53715, USA
Dear Maam/Sir,
I would like to order a copy of Mand2000 for my Amiga __00. I
have enclosed US $34.95 (in a cheque, money order, postal order, or
US cash). I understand that this not only pays for Mand2000, but also
for shipping and handling to anywhere in the world. Wow, what a great
deal.
I heard about Mand2000 through...
My favourite features are...
My least favourite feature is...
Thanks for writing such a __________ product. Please send my
registered copy to:
Sincerely,
----------------------------------------------------------------------
ICP-Verlag
Innere Cramer Klette Str. 6,
D-90403 Nürnberg,
Germany
Dear Maam/Sir,
I live in Europe and I would like to order a copy of Mand2000 for
my Amiga __00. I have enclosed 69 DM per copy, plus 5 DM per order
for shipping to Germany or 15DM per order for shipping elsewhere in
Europe.
I heard about Mand2000 through...
My favourite features are...
My least favourite feature is...
Thanks for publishing such a __________ product. Please send my
registered copy to:
Sincerely,