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From: owner-fractint-digest@lists.xmission.com (fractint-digest)
To: fractint-digest@lists.xmission.com
Subject: fractint-digest V1 #557
Reply-To: fractint-digest
Sender: owner-fractint-digest@lists.xmission.com
Errors-To: owner-fractint-digest@lists.xmission.com
Precedence: bulk
fractint-digest Saturday, May 5 2001 Volume 01 : Number 557
----------------------------------------------------------------------
Date: Fri, 04 May 2001 10:29:17 -0500
From: DeBow Freed <bmc1@airmail.net>
Subject: Re: (fractint) C-FOTD 28-04-01 (Semi-Chaos [4])
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Well I don't think it's all that off-point, and can think of several reasons
to encourage such rare dialogues on this site:
<p> a) they're all too INfrequent, frequently stimulating,
and *fun*;
<br> b) they make a great deal more sense, IMHO, than
"similar" efforts by those who consider themselves to be philosophers/philosophers
of science, or philosopers AND scientists - who invariably are neither;
<br> c) the latter have their own philo-whatever discussion
sites - have you ever read any of <u>that</u> garbage?.
<p>DBF
<p>Thomas Bennett wrote:
<blockquote TYPE=CITE>> > Programmer Dude wrote:
<br>> > >
<br>> > > Jim Muth philosophized:
<br>> > >
<br>> > > > ...I pondered about gravity and dark matter.
<br>> The problem is that
<br>> > > > the outer parts of the galaxies are rotating
<br>> too fast to be caused
<br>> > ......................
<br>> >
<br>> >
<br>> > > Just a note: we can't detect it only because it
<br>> does not emit light that
<br>> > > we can see. Dark matter *could* just be
<br>> ordinary, cold matter, and we
<br>> > > would never be able to see it...from earth. If
<br>> we can ever get out into
<br>> > > the galaxy and universe, THEN we'd probably have
<br>> no problem detecting
<br>> it.
<br>> > >
<br>> >
<br>> >
<br>> > Aren't we IN the universe?
<br>> > Kathy Roth
<br>> >
<br>I, unfortunately, find these esoteric discussions
<br>somewhat off the point and containing little, if
<br>anything, relevant to the construction of fractals.
<p> Tom
<p>Peace and tranquility are within us all.
<p>__________________________________________________
<br>Do You Yahoo!?
<br>Yahoo! Auctions - buy the things you want at great prices
<br><a href="http://auctions.yahoo.com/">http://auctions.yahoo.com/</a>
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------------------------------
Date: Fri, 04 May 2001 10:49:45 -0500
From: Programmer Dude <cjsonnack@mmm.com>
Subject: Re: (fractint) C-FOTD 28-04-01 (Semi-Chaos [4])
Ricardo M. Forno wrote:
> Kathy Roth wrote:
>> Programmer Dude wrote:
>>> Jim Muth philosophized:
>>>> ...I pondered about gravity and dark matter.
>>>
>>> If we can ever get out into the galaxy and universe, THEN we'd
>>> probably have no problem detecting it.
>>
>> Aren't we IN the universe?
>
> Aren't we IN a galaxy?
"If we can ever get **OUT** **INTO** the galaxy and universe,..."
On our little ball of rock, we're snug and safe beneath a protective,
concealing blanket of atmosphere....which is encased in a magnetic
planetary structure...which is inside the local solar environment.
You have to go a long, long way to get **OUT** **INTO** the galactic
environment before you can begin to look for dark matter.
p.s.
Some astronomers have suggested that dark matter might be located in
(and I love this term) MACHOS (MAssive Cometary Halo ObjectS). That
is, really, really big snowballs. With rocks in them. ;-)
- --
|_ CJSonnack <Chris@Sonnack.com> _____________| How's my programming? |
|_ http://www.Sonnack.com/ ___________________| Call: 1-800-DEV-NULL |
|_____________________________________________|_______________________|
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------------------------------
Date: Fri, 04 May 2001 10:29:17 -0500
From: DeBow Freed <bmc1@airmail.net>
Subject: Re: (fractint) C-FOTD 28-04-01 (Semi-Chaos [4])
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Well I don't think it's all that off-point, and can think of several reasons
to encourage such rare dialogues on this site:
<p> a) they're all too INfrequent, frequently stimulating,
and *fun*;
<br> b) they make a great deal more sense, IMHO, than
"similar" efforts by those who consider themselves to be philosophers/philosophers
of science, or philosopers AND scientists - who invariably are neither;
<br> c) the latter have their own philo-whatever discussion
sites - have you ever read any of <u>that</u> garbage?.
<p>DBF
<p>Thomas Bennett wrote:
<blockquote TYPE=CITE>> > Programmer Dude wrote:
<br>> > >
<br>> > > Jim Muth philosophized:
<br>> > >
<br>> > > > ...I pondered about gravity and dark matter.
<br>> The problem is that
<br>> > > > the outer parts of the galaxies are rotating
<br>> too fast to be caused
<br>> > ......................
<br>> >
<br>> >
<br>> > > Just a note: we can't detect it only because it
<br>> does not emit light that
<br>> > > we can see. Dark matter *could* just be
<br>> ordinary, cold matter, and we
<br>> > > would never be able to see it...from earth. If
<br>> we can ever get out into
<br>> > > the galaxy and universe, THEN we'd probably have
<br>> no problem detecting
<br>> it.
<br>> > >
<br>> >
<br>> >
<br>> > Aren't we IN the universe?
<br>> > Kathy Roth
<br>> >
<br>I, unfortunately, find these esoteric discussions
<br>somewhat off the point and containing little, if
<br>anything, relevant to the construction of fractals.
<p> Tom
<p>Peace and tranquility are within us all.
<p>__________________________________________________
<br>Do You Yahoo!?
<br>Yahoo! Auctions - buy the things you want at great prices
<br><a href="http://auctions.yahoo.com/">http://auctions.yahoo.com/</a>
<p>--------------------------------------------------------------
<br>Thanks for using Fractint, The Fractals and Fractint Discussion List
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fractint"</blockquote>
</html>
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------------------------------
Date: Fri, 4 May 2001 20:58:40 -0400 (EDT)
From: Jim Muth <jamth@mindspring.com>
Subject: (fractint) RE: C-FOTD 28-04-01 (Semi-Chaos [4])
At 05:20 AM 5/4/01 -0700, Thomas Bennett wrote:
>I, unfortunately, find these esoteric discussions
><about general relativity> somewhat off the point and
>containing little, if anything, relevant to the
>construction of fractals.
True, the topic might be more appropriate on the philofractal
list, but anyone interested in math and the mathematical aspect
of fractals should be equally interested in how the rest of the
world works. And, considering the way it has been popularized
over the better part of the last century, relativity can hardly
still be considered esoteric.
FOTD now in work.
Jim M.
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------------------------------
Date: Sat, 5 May 2001 00:10:21 -0400 (EDT)
From: Jim Muth <jamth@mindspring.com>
Subject: (fractint) C-FOTD 05-05-01 (Golden Terraces [6])
Classic FOTD -- May 05, 2001 (Rating 6)
Fractal visionaries and enthusiasts:
As far as I can recall, this is the first time I have needed to
post a second version of the same fractal. But I had to do it.
Another look at yesterday's pathetic effort convinced me that
even the humble rating of 3 was too high. The picture rates
closer to a 2, and perhaps even a 1.
As stated, today's fractal was created by the same formula as
yesterday's. In fact, it's the same image. The only change is
that today's version was rendered with the outside=tdis option
in effect, which gives the appearance of golden terraces.
After minimal consideration, I named the picture "Golden
Terraces" and rated it a 6. I chose the name because I saw
terraces when I studied the image; I decided on the slightly
above average rating of 6 because I kind of like the new version.
The parameter file renders in 6-1/2 minutes. A download of the
GIF image file is faster, and the GIF image will be available
within the hour at:
<http://home.att.net/~Paul.N.Lee/FotD/FotD.html>
and at:
<http://home.swbell.net/sdboyd56/fotd/>
While working with today's image, I discovered a new bug in the
latest float-only release of Fractint. I'll track the critter
down and post the details in the morning.
The fractal weather today continued summer-like, with hot hazy
sun and a temperature of 90F (32C). These conditions were a bit
too extreme for the intrepid duo of fractal cats, who passed the
afternoon lounging on the shaded porch, raising their heads only
when they thought they heard a can of food being opened.
As all things must eventually come to an end, so must the FOTD
for 05-05-01 come to its end. But the 06-05-01 FOTD will appear
in only 24 hours, and it is guaranteed to be an improvement. So
until then, take care, and watch out for hit-and-run fractals.
Jim Muth
jamth@mindspring.com
START 20.0 PAR-FORMULA FILE================================
Golden_Terraces { ; time=0:06:27.34--SF5 on a P200
reset=2001 type=formula formulafile=critical.frm
formulaname=mandelbrotmix4 function=ident passes=1
center-mag=-0.213080088333/0.2385427746923/174167.\
4/1/59.999 params=1/1/1/5/0/0 float=y maxiter=1200
inside=0 outside=tdis periodicity=10
colors=000Q0ZO0dM0kL0qL0wO0qQ0mS2fU6aXBXYFS`KMaOId\
UDfYAic5kg1sn0ys0zw0zz0zy0yt0sn0mi0fc0`Z0UU0LQ0DK0\
AG06C0BD0FF1IG5MH8SICXIG`KKdLOkMSoOXtQ`yQdtOgqMinL\
kiKmfKncIqZHsXGtUFvQFwMDzKCzGBzDAzBAzHGwMMnUUfZ`Yf\
gQmoItwBzz5vw8ssComGmgIiaMfYRcSV`OYYIaVFfSAkQ6nM1s\
K0wH0zaMaytGwsHwsIwsKwsLvsMvsOvsQvsQtqRtqStqUtqVsq\
XsqYsqZsqZg0Hn5Kt8MzCQzGRzIUzKXzMZyOawQdvSgtUksXnq\
YqoZtnawmczkfzigzgiziczkZzmUznQzoKzoGzoIzqMzcd5aa2\
`Z0`Y0YX0VV0UU1RS2OR3MQ3KO5IM6GL7DK8CI8AHA7GB6FC3D\
D2CD0BF0AG08H07I07I0BL0DO0HR0KU0OX0RZ0Va0Yd0ag0dk0\
in0mq0qt0tw0yz0zz1zt8zkGzcOzVXzMdzGnz8wz1zz0zz0zz0\
zw1zv3ys6yo7wnAvkCtgDsdGscIq`KoYMnXQmURmRUkOXiMYgK\
`fHcfGddFfdDfcCgcBgaBiaAi`8k`7k`7kZ6mZ5mY3nY2nX2oX\
1oV0qV0qV0qHGd5ZU0sK0tL0vL3wL6yL8yLCzLFzLIzLLzLOzL\
SzLVzLYzLVzISyHQtGMqDKmCHgBFcAC`7AX67S55Q33M73KB3H\
D2GH2DL2BO18S17VU0IS0OR0U
}
frm:MandelbrotMix4 {; Jim Muth
a=real(p1), b=imag(p1), d=real(p2), f=imag(p2),
g=1/f, h=1/d, j=1/(f-b), z=(-a*b*g*h)^j,
k=real(p3)+1, l=imag(p3)+100, c=fn1(pixel):
z=k*((a*(z^b))+(d*(z^f)))+c,
|z| < l
}
END 20.0 PAR-FORMULA FILE==================================
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------------------------------
Date: Fri, 4 May 2001 20:45:53 +0100
From: John Lewis <jlewis@clara.net>
Subject: Re: (fractint) C-FOTD 28-04-01 (Semi-Chaos [4])
We have had from jim Muth
>> ... I pondered about gravity and dark matter.
And the following points were made
> If we can ever get out into the galaxy and universe, THEN we'd=
probably have no problem detecting it.
> Aren't we IN the universe?
> Aren't we IN a galaxy?
>"If we can ever get **OUT** **INTO** the galaxy and=
universe,..."
>On our little ball of rock, we're snug and safe beneath a=
protective,
concealing blanket of atmosphere.... which is encased in a=
magnetic
planetary structure... which is inside the local solar=
environment.
>You have to go a long, long way to get **OUT** **INTO** the=
galactic
environment before you can begin to look for dark matter.
The question then is if we got out of the solar system, how would=
we
know if we had bumped into some dark matter? Would we in fact=
notice,
or would it be too diffuse?
John
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------------------------------
Date: Sat, 05 May 2001 15:45:56 +0500
From: "Tony (Anthony) Hanmer" <a_hanmer@hotmail.com>
Subject: (fractint) IFS and L-system anomations...
I am seeking a way to make copies of IFS and L-system files of, say, up to
10 lines each, with small changes in 1 or 2 numbers of up to 15 digits each.
For instance, with a starting L-system file, ask for changes in the angle
of 0.5 degrees (using d), growing larger in one place, smaller in another to
compensate, a total of 360 times (= a set of L-system types from 0-180
degrees with all other considerations the same); titles numbered as well,
e.g. adh001, adh002, etc. This would allow some kind of overlay of
gradually varying output fractals, either into a 3-d set or as an animation
of sorts. (Is that all clear?) I would like to be able to do this in
either DOS or in a programme with macros like MSWord97. Any ideas...?
Could the existing fractal animation programmes do this already or be
adapted to do it?
Tony Hanmer
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
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------------------------------
Date: Sat, 05 May 2001 14:13:28 +0200
From: Guy Marson <guy.marson@mnhn.lu>
Subject: Re: (fractint) IFS and L-system anomations...
At 15:45 05/05/01 +0500, you wrote:
>I am seeking a way to make copies of IFS and L-system files of, say, up to
>10 lines each, with small changes in 1 or 2 numbers of up to 15 digits each.
> For instance, with a starting L-system file, ask for changes in the angle
>of 0.5 degrees (using d), growing larger in one place, smaller in another to
>compensate, a total of 360 times (= a set of L-system types from 0-180
>degrees with all other considerations the same); titles numbered as well,
>e.g. adh001, adh002, etc. This would allow some kind of overlay of
>gradually varying output fractals, either into a 3-d set or as an animation
>of sorts. (Is that all clear?) I would like to be able to do this in
>either DOS or in a programme with macros like MSWord97. Any ideas...?
>Could the existing fractal animation programmes do this already or be
>adapted to do it?
Hi Tony,
Is it possible to save this angle in the parameter-File (B-command)?
Cheers,
Guy
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------------------------------
Date: Sat, 05 May 2001 15:51:31 +0200
From: Guy Marson <guy.marson@mnhn.lu>
Subject: Re: (fractint) RE: C-FOTD 28-04-01 (Semi-Chaos [4])
At 20:58 04/05/01 -0400, you wrote:
>At 05:20 AM 5/4/01 -0700, Thomas Bennett wrote:
>
>>I, unfortunately, find these esoteric discussions
>><about general relativity> somewhat off the point and
>>containing little, if anything, relevant to the
>>construction of fractals.
>
>True, the topic might be more appropriate on the philofractal
>list, but anyone interested in math and the mathematical aspect
>of fractals should be equally interested in how the rest of the
>world works. And, considering the way it has been popularized
>over the better part of the last century, relativity can hardly
>still be considered esoteric.
>
"Life is a comedy for those who think and a tragedy for those who feel"....
... so let's fractalize this comedian tragedy.
Guy
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------------------------------
Date: Sat, 05 May 2001 09:39:59 -0500
From: DeBow Freed <bmc1@airmail.net>
Subject: Re: (fractint) IFS and L-system anomations...
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Tony-
<p>There are two sources of code still in print and available from, for
example, amazon.com, that I am aware of, that could be adapted as you wish:
<p>1) Meinhardt, H., Prusinkiewicz,P. et al: <b>The Algorithmic Beauty
of Shells</b> (2d Ed), c 1998, 248 pgs, .
<br>has an updated CD-ROM enclosed with numerous L-system & branching
process programs;
<p>2) Prusinkiewicz, et al: <b>L-Systems, Fractals and Branching Processes</b>,
<br>Springer Lecture Notes in Biomathematics #79, c 1980, 120pgs, ISBN
3-540-97092-4
<br>ends with ~30pgs of straight code in it, but is not very easy going.
<p>As <u>Prusienkiewicz</u> was apparently the popularizer of Lindenmayer
systems, look up all his now out of print earlier books and articles, and
you'll find many from the 90's with executable code;
<p>Similarly for old <u>Lindenmayer</u> himself, and more recently <u>Meinhardt
& pals</u> who has also done books with gorgeous graphics (and documented
code) such as <b>The Algorithmic Beauty of Plants</b> w/ enclosed CD-ROMS;
<p>The richest source of code for <u>branching processes in general</u>
still lies in the Springer Series <b>Lecture Notes in Biomathematics</b>.
Unfortunately, most are out of print - but should be in your Univ library.
<p>Oh, most of the efficient IFS code is patented by and available for
$ from a company associated with (I think) Barnsley at Georgia Tech, which
may still maintain its website called "IFS, Inc".
<br>
<p>Good luck.
<p>DeBow Freed
<p>"Tony (Anthony) Hanmer" wrote:
<blockquote TYPE=CITE>I am seeking a way to make copies of IFS and L-system
files of, say, up to
<br>10 lines each, with small changes in 1 or 2 numbers of up to 15 digits
each.
<br> For instance, with a starting L-system file, ask for changes
in the angle
<br>of 0.5 degrees (using d), growing larger in one place, smaller in another
to
<br>compensate, a total of 360 times (= a set of L-system types from
0-180
<br>degrees with all other considerations the same); titles numbered as
well,
<br>e.g. adh001, adh002, etc. This would allow some kind of overlay
of
<br>gradually varying output fractals, either into a 3-d set or as an animation
<br>of sorts. (Is that all clear?) I would like to be able
to do this in
<br>either DOS or in a programme with macros like MSWord97. Any ideas...?
<br>Could the existing fractal animation programmes do this already or
be
<br>adapted to do it?
<p>Tony Hanmer
<br>_________________________________________________________________________
<br>Get Your Private, Free E-mail from MSN Hotmail at <a href="http://www.hotmail.com">http://www.hotmail.com</a>.
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------------------------------
Date: Sat, 5 May 2001 10:51:54 EDT
From: JimMuth@aol.com
Subject: (fractint) Float-only bug report
I have found an annoying bug in the float-only version of
Fractint. The bug is demonstrated by the two attached parameter
files. The two files are of the same image, but they were
written by different versions of the program. The center
coordinates in the first file, which was written by the
float-only version, are rounded to 6 places, which at this
magnitude causes the wrong image to be drawn. The second file,
written by the standard version, draws the correct image.
The bug is significant only in this particular magnitude range.
At higher magnitudes, the float-only version does not round off
the coordinates. At lesser magnitudes, the rounding is
insignificant.
========================================================
float-only { ; written by float-only version
; Version 2001 Patchlevel 8
reset=2001 type=formula
formulafile=critical.frm
formulaname=mandelbrotmix4 function=ident
center-mag=-0.213078/0.238549/3905099/1/72.499
params=1/1/1/5/0/0 float=y maxiter=1200
inside=0 outside=tdis periodicity=10
colors=000Q0ZO0dM0kL0qL0wO0qQ0mS2fU6aXBXYFS`KMaOId\
UDfYAic5kg1sn0ys0zw0zz0zy0yt0sn0mi0fc0`Z0UU0LQ0DK0\
AG06C0BD0FF1IG5MH8SICXIG`KKdLOkMSoOXtQ`yQdtOgqMinL\
kiKmfKncIqZHsXGtUFvQFwMDzKCzGBzDAzBAzHGwMMnUUfZ`Yf\
gQmoItwBzz5vw8ssComGmgIiaMfYRcSV`OYYIaVFfSAkQ6nM1s\
K0wH0zaMaytGwsHwsIwsKwsLvsMvsOvsQvsQtqRtqStqUtqVsq\
XsqYsqZsqZg0Hn5Kt8MzCQzGRzIUzKXzMZyOawQdvSgtUksXnq\
YqoZtnawmczkfzigzgiziczkZzmUznQzoKzoGzoIzqMzcd5aa2\
`Z0`Y0YX0VV0UU1RS2OR3MQ3KO5IM6GL7DK8CI8AHA7GB6FC3D\
D2CD0BF0AG08H07I07I0BL0DO0HR0KU0OX0RZ0Va0Yd0ag0dk0\
in0mq0qt0tw0yz0zz1zt8zkGzcOzVXzMdzGnz8wz1zz0zz0zz0\
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SzLVzLYzLVzISyHQtGMqDKmCHgBFcAC`7AX67S55Q33M73KB3H\
D2GH2DL2BO18S17VU0IS0OR0U
}
standard { ; written by standard version
; Version 2001 Patchlevel 5
reset=2001 type=formula
formulafile=critical.frm
formulaname=mandelbrotmix4 function=ident
center-mag=-0.21307797051286860/+0.238549244665356\
30/3905099/1/72.499 params=1/1/1/5/0/0 float=y
maxiter=1200 inside=0 outside=tdis periodicity=10
colors=000Q0ZO0dM0kL0qL0wO0qQ0mS2fU6aXBXYFS`KMaOId\
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SzLVzLYzLVzISyHQtGMqDKmCHgBFcAC`7AX67S55Q33M73KB3H\
D2GH2DL2BO18S17VU0IS0OR0U
}
=====================================================
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Date: Sat, 05 May 2001 12:22:48 -0600
From: Tim Wegner <twegner@swbell.net>
Subject: (fractint) What is on topic or off topic
Recently several of you have been concerned about whether some of the
recent discussion has been on or off topic for this list.
It is important to keep messages on topic. The topic is fractals and
fractint. Keeping messages on topic is a courtesy to all the list members
who are receiving all the mail on this list, and who subscribed because
they are interested in the topic. This is really an issue of mindfulness
that is needed when posting. Before pressing the <send> button, just
ask yourself if your post is really appropriate for this list.
I should add that the topic of fractals is indeed broad. It certainly covers
some aspects of mathematics, philosophy, astronomy, and speculation
about the physical world. I not want to suggest that some of the recent
threads were necessarily inappropriate, though it is probably true that
some of the posts in those threads had indeed wandered far off topic.
I ask only that when you branch into those related fields, you be mindful
to keep the discussion related somewhat to our topic, at least after a
post or two.
Here's an example of a related topic that I think is fine for this list.
Here's an animated zoom made from NASA imagery that reminds me a
lot of animated zooms I have made with fractint. You will need software
that reads MPEG files to enjoythis (e.g. Windows Media Player). It's kind
of a long URL, you might need to unwrap it.
This one zooms from the whole planet to Fisherman's Wharf.
www.gsfc.nasa.gov/GSFC/EARTH/imaging/SanFrancisco_zoom_in.mpeg
Tim
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Date: Sat, 05 May 2001 14:39:11 -0500
From: DeBow Freed <bmc1@airmail.net>
Subject: Addendum to: Re: (fractint) IFS and L-system anomations...
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
Tony-
<p>The specific degree/branch-related question you ask is dealt with in
C in the following book, whose in-print/outofprint status I don't know:
<p>Rozenberg,G & Salomaa,A (Eds): <b><u>The Book of L</u></b>, Springer-Verlag,
c1985, 492p,
<br> ISBN 3-540-16022-1 and 0-387-16022-1.
<p>DBF
<p>DeBow Freed wrote:
<blockquote TYPE=CITE>Tony-
<p>There are two sources of code still in print and available from, for
example, amazon.com, that I am aware of, that could be adapted as you wish:
<p>1) Meinhardt, H., Prusinkiewicz,P. et al: <b>The Algorithmic Beauty
of Shells</b> (2d Ed), c 1998, 248 pgs, .
<br>has an updated CD-ROM enclosed with numerous L-system & branching
process programs;
<p>2) Prusinkiewicz, et al: <b>L-Systems, Fractals and Branching Processes</b>,
<br>Springer Lecture Notes in Biomathematics #79, c 1980, 120pgs, ISBN
3-540-97092-4
<br>ends with ~30pgs of straight code in it, but is not very easy going.
<p>As <u>Prusienkiewicz</u> was apparently the popularizer of Lindenmayer
systems, look up all his now out of print earlier books and articles, and
you'll find many from the 90's with executable code;
<p>Similarly for old <u>Lindenmayer</u> himself, and more recently <u>Meinhardt
& pals</u> who has also done books with gorgeous graphics (and documented
code) such as <b>The Algorithmic Beauty of Plants</b> w/ enclosed CD-ROMS;
<p>The richest source of code for <u>branching processes in general</u>
still lies in the Springer Series <b>Lecture Notes in Biomathematics</b>.
Unfortunately, most are out of print - but should be in your Univ library.
<p>Oh, most of the efficient IFS code is patented by and available for
$ from a company associated with (I think) Barnsley at Georgia Tech, which
may still maintain its website called "IFS, Inc".
<br>
<p>Good luck.
<p>DeBow Freed
<p>"Tony (Anthony) Hanmer" wrote:
<blockquote TYPE=CITE>I am seeking a way to make copies of IFS and L-system
files of, say, up to
<br>10 lines each, with small changes in 1 or 2 numbers of up to 15 digits
each.
<br> For instance, with a starting L-system file, ask for changes
in the angle
<br>of 0.5 degrees (using d), growing larger in one place, smaller in another
to
<br>compensate, a total of 360 times (= a set of L-system types from
0-180
<br>degrees with all other considerations the same); titles numbered as
well,
<br>e.g. adh001, adh002, etc. This would allow some kind of overlay
of
<br>gradually varying output fractals, either into a 3-d set or as an animation
<br>of sorts. (Is that all clear?) I would like to be able
to do this in
<br>either DOS or in a programme with macros like MSWord97. Any ideas...?
<br>Could the existing fractal animation programmes do this already or
be
<br>adapted to do it?
<p>Tony Hanmer
<br>_________________________________________________________________________
<br>Get Your Private, Free E-mail from MSN Hotmail at <a href="http://www.hotmail.com">http://www.hotmail.com</a>.
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fractint"</blockquote>
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------------------------------
Date: Sat, 5 May 2001 16:56:56 -0500
From: "Jonathan Osuch" <osuchj@qwest.net>
Subject: Re: (fractint) Float-only bug report
Jim,
> I have found an annoying bug in the float-only version of
> Fractint. The bug is demonstrated by the two attached parameter
> files. The two files are of the same image, but they were
> written by different versions of the program.
Can you recall the exact steps you took to get from the standard version
image to the float only version image? I can't get there (using the float
only version) from the standard version PAR or a GIF made from it. It may
also help if you sent me your sstools.ini file used with the float only
version. Thanks.
Jonathan
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------------------------------
Date: Sat, 5 May 2001 15:57:30 -0700 (PDT)
From: Thomas Bennett <tombennett98@yahoo.com>
Subject: Re: (fractint) RE: C-FOTD 28-04-01 (Semi-Chaos [4])
- --- Guy Marson <guy.marson@mnhn.lu> wrote:
> >True, the topic might be more appropriate on the
> philofractal
> >list, but anyone interested in math and the
> mathematical aspect
> >of fractals should be equally interested in how the
> rest of the
> >world works. And, considering the way it has been
> popularized
> >over the better part of the last century,
> relativity can hardly
> >still be considered esoteric.
I see no reason why an interest in fractals
automatically condemns me to an interest in how the
rest of the world works.
Now I am posting off topic.
Tom.
__________________________________________________
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------------------------------
Date: Sat, 5 May 2001 20:11:20 EDT
From: JimMuth@aol.com
Subject: (fractint) Re: Float-only bug report
Johnathan wrote:
>Can you recall the exact steps you took to get from the standard version
>image to the float only version image? I can't get there (using the float
>only version) from the standard version PAR or a GIF made from it. It may
>also help if you sent me your sstools.ini file used with the float only
>version. Thanks.
I had to temporarily rename the two fractint.exe files to
shift back and forth from float-only to standard.
To reproduce the bug, boot the float-only version of Fractint
and run the parameter file attached to the bottom of this
letter. The file was written by the full version with integer
math. Then, still using the float-only version, save a new
parameter file of the just finished image. Next run the
parameter file that you just saved and compare the two images.
The new image will be offset by about half a screen width.
The problem seems to be that the float-only version waits until
too great a magnitude is reached before it stops rounding the
center coordinates to 6 places. The bug is very subtle and
affects only a small magnitude range, which is why I did not
notice it until I began working with the "Golden Terraces"
image, which happens to lie in that narrow range.
Here is my sstools.ini file, which gets me into the
MandelbrotMix4 formula and draws a blank black screen. I doubt
that the .ini file is involved.
I hope this info helps.
Jim M.
START SSTOOLS.INI FILE==========================
TYPE=formula
FLOAT=yes
FORMULAFILE=critical.frm
FORMULANAME=MandelbrotMix4
MAXITER=100
PASSES=g
INSIDE=0
PERIODICITY=10
SYMMETRY=none
PARAMS=1/999999999/1/1/1/99999
FUNCTION=recip
; BAILOUT=25
LOGMAP=yes
FASTRESTORE=yes
VIDEO=sf5
ASKVIDEO=no
SAVETIME=25
MATHTOLERANCE=/0.18
DEBUGFLAG=920
TEXTSAFE=save
END SSTOOLS.INI FILE============================
START PARAMETER FILE============================
standard { ; parameters by standard version
; Version 2001 Patchlevel 5
reset=2001 type=formula
formulafile=critical.frm
formulaname=mandelbrotmix4 function=ident
center-mag=-0.21307797051286860/+0.238549244665356\
30/3905099/1/72.499 params=1/1/1/5/0/0 float=y
maxiter=1200 inside=0 outside=tdis periodicity=10
colors=000Q0ZO0dM0kL0qL0wO0qQ0mS2fU6aXBXYFS`KMaOId\
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D2GH2DL2BO18S17VU0IS0OR0U
}
END PARAMETER FILE==============================
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------------------------------
Date: Sat, 5 May 2001 20:17:18 EDT
From: JimMuth@aol.com
Subject: (fractint) Re: C-FOTD 28-04-01
Tom Bennett wrote:
>I see no reason why an interest in fractals
>automatically condemns me to an interest in how the
>rest of the world works.
Being interested in fractals certainly does not condemn
anyone to an interest in the world. But since when has an
interest in the world around us been a condemnation?
FOTD in 3 hours or so.
Jim M.
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------------------------------
Date: Sat, 05 May 2001 22:30:14 -0400
From: Mike Traynor <lmtraynor@sympatico.ca>
Subject: Re: (fractint) No hard feelings
Zorba,
> Anyway. On a slightly different note, it's pretty unlikely that I'll do the
> re-rendering with Fractint, for multiple reasons - no built-in antialiasing,
> for example, and it multitasks pretty badly with Windows. If I can figure
> out how to duplicate the exact images in Ultrafractal (I haven't even gone
> back to see the differences yet, actually) I might try, but considering that
> one complaint was the color banding (which I can't imagine how it could
> possibly be *worse* on UF than Fractint)
Why imagine? I did Swarm027 and Swarm018 in Fractint disk/video mode at 1600x1200
under W98 and they took about 35 and 18 minutes (PIII/600) respectively and
didn't cause problems doing it. The differences are obvious. Having the benefit
over you that I have actually seen the fractint images at 1600x1200, I'd say they
don't need anti-aliasing and since it destroys the textures that are a feature of
at least those two images, anti-aliasing isn't a benefit. You may or may not like
the texture Sylvie has brought out, but to rely on your imagination when you could
see for yourself in very little time is odd indeed. Try them. You might like
them.
> and the antialiasing (which I
> consider totally incomprehensible from an artistic standpoint - if anything,
> it makes it *more* detailed, IMHO
It doesn't make an image more detailed. It smooths things out, so it actually
removes detail - whether that detail is real or artifice and whether it is
wanted or not are other matters. If you do the image in fractint you'll see
that either UF or the anti-aliasing has removed the texture that is an interesting
feature of Swarm027 and Swarm018.
Mike
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------------------------------
End of fractint-digest V1 #557
******************************