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fractint-digest        Wednesday, June 20 2001        Volume 01 : Number 574




----------------------------------------------------------------------

Date: Sun, 17 Jun 2001 00:39:10 -0500
From: Tim Lavoie <[e-mail]>
Subject: (fractint) Re: fractint-digest V1 #573

Jonathan wrote:

> I haven't tried the <del> key to use disk mode, but I knew that -disk was
> broken.  I'm looking at it now.

OK, great. I started poking through the source a little, so I see where it
dies, but haven't gotten all the way back to the real cause. Short answer,
it tries to clear Ximage stuff, which it shouldn't have any of.
(and doesn't -  *BOOM*)
Here's the stack trace running it under gdb:

Program received signal SIGSEGV, Segmentation fault.
0x80f86e2 in clearXwindow () at unixscr.c:768
768         bzero(Ximage->data, Ximage->bytes_per_line*Ximage->height);
(gdb) bt
#0  0x80f86e2 in clearXwindow () at unixscr.c:768
#1  0x80f8a07 in startvideo () at unixscr.c:840
#2  0x80fc9bc in setvideomode (ax=0, bx=0, cx=0, dx=0) at video.c:186
#3  0x8084256 in big_while_loop (kbdmore=0xbffff920, stacked=0xbffff91f "",
    resumeflag=0) at framain2.c:106
#4  0x8083ce1 in main (argc=2, argv=0xbffff994) at fractint.c:515
#5  0x4017b2eb in __libc_start_main () from /lib/libc.so.6

I was stepping through the code for a while, and dotmode got bumped from 0
to 19. Unfortunately, I had stepped through too far at a time, and missed
the exact point. I think it was during the check_video_mode() call called
from line 426 of fractint.c Maybe I'll poke at it tomorrow...


> > - How do I get true-color to work? Should it appear in my View Window
> > Options screen? I see nothing there for either image size or true-color
> > options.
>
> If you are running Linux in a true-color mode, then Xfractint will run in
> the same mode.  There are some issues with this.  Like people expecting the
> colors to be saved in a PAR even though they are in a true-color mode and
> this doesn't necessarily make any sense.

Hm. OK, I wondered why it never showed me the option. I pretty much run in
high-color mode (16- or 24-bit) most of the time. When I check the image
info with the <tab> key, it says stuff like:
     Video: 640x480x256 xfractint mode

Naturally, I wonder how to get beyond that.


> > - While I don't need the 'd' shell command, I do whack it by accident.
> > Typing "exit" as usual to get out of the shell also causes a
> > segfault/coredump.
>
> I'll have to look into this one.  Thanks.

OK, sounds great.

> >  - I get some strange rendering artifacts in some fractals, and weird
> stuff
> > that ends up in saved images as well. The rendering-time one is a grid
> > pattern of dots on the left-hand side, say with the default mandel as an
> > example. I can avoid this if I switch from "guess" to another pass type in
> > the 'x' option panel, so no big deal there. The other appears as a
> vertical
> > line travelling down the display window when I save to a .gif, and it
> > appears in the saved image as well. Along with that, the sides of the
> image
> > look like they're out of sync with the middle, with the left one bordering
> > on that vertical line I mentioned. I can also see this weird look if I
> > switch to a different virtual desk top and back again, without saving.
>
> I'll have a look at this.  If I can't reproduce it, I'll get back with you.

Well, I can (unfortunately?) reproduce both glitches every time, but they
appears not to affect xfractint on my work PC. Both are x86 PCs running
Debian Linux, though perhaps not the same versions of all packages and
libraries. Both have Matrox G400 video (should it matter?). The work one has
an Intel PIII, versus an AMD K6-2 at home. Since the weird wrap-around and
line are visible in saved images, I'll mail a copy of one to you, off the
list. The little left-hand dots aren't visible in the saved image, but
they're in one part of the image which is already trashed anyway.

    Cheers (and thanks!)
    Tim

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------------------------------

Date: Sun, 17 Jun 2001 05:39:41 -0500
From: "Scott D. Boyd" <[e-mail]>
Subject: Re: (fractint) Re: fractint-digest V1 #573

On Sunday 17 June 2001 00:39, Tim Lavoie wrote:
> >
> > If you are running Linux in a true-color mode, then Xfractint will run
> > in the same mode.  There are some issues with this.  Like people
> > expecting the colors to be saved in a PAR even though they are in a
> > true-color mode and this doesn't necessarily make any sense.
>
> Hm. OK, I wondered why it never showed me the option. I pretty much run
> in high-color mode (16- or 24-bit) most of the time. When I check the
> image info with the <tab> key, it says stuff like:
>      Video: 640x480x256 xfractint mode
>
> Naturally, I wonder how to get beyond that.
>
Actually, "Xfractint running in true-color mode" is kind of confusing.
Xfractint (and Fractint) have always created 256-color gif images. Before
version 20.1.07 or so, Xfractint would only work correctly if your X
server was running in 8-bit color mode. Some modifications were made to
the source, and now Xfractint works correctly whether you are in 8-bit
color mode, or 16-bit color mode. But it still only displays and saves the
images with 256 colors, as that's all the gif format allows. During the
"true-color fix", other features were broken, and I believe Jonathan is
currently working on some of them.
>
> > vertical line travelling down the display window when I save to a
> >.gif, and it appears in the saved image as well. Along with that, the
> > sides of the image

Fractint and Xfractint have always had a multi-colored line going down the
left side of the image window while saving. But I've never experienced or
heard of that line ending up in the saved image!
>
Just my 2-cents (USD) worth...
Scott Boyd
- --
[e-mail]
http://sdboyd.dyndns.org/~sdboyd/
- ---------------------------------------
I always wanted to be a procrastinator,
but I never got around to it.
                            -- Unknown

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------------------------------

Date: Sun, 17 Jun 2001 07:34:23 -0500
From: "Jonathan Osuch" <[e-mail]>
Subject: Re: (fractint) Re: fractint-digest V1 #573

Tim,

> I was stepping through the code for a while, and dotmode got bumped from 0
> to 19. Unfortunately, I had stepped through too far at a time, and missed
> the exact point.

Yes, I found why it was doing that.  There is a right brace that got placed
in the wrong place in the initunixwindow() routine in unixscr.c.  Part of
the reason that happened is that there are about 30 lines of duplicate code
in that routine.  This fixes the initial segment fault, but there is still
one that occurs just prior to the completion of the disk-video image.

I have the Shell to Linux/Unix problem fixed.

Jonathan



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------------------------------

Date: Sun, 17 Jun 2001 09:31:44 -0500
From: "Jonathan Osuch" <[e-mail]>
Subject: Re: (fractint) Re: fractint-digest V1 #573

> but there is still
> one that occurs just prior to the completion of the disk-video image.

Got it.  The disk video mode now works as before.  It will be in my next
patch.

Jonathan



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------------------------------

Date: Sun, 17 Jun 2001 11:07:35 EDT
From: [e-mail]
Subject: (fractint) C-FOTD  17-06-01  (Midget-Two [6])

Classic FOTD -- June 17, 2001 (Rating 6)

Fractal visionaries and enthusiasts:

A glance at the center coordinates will show that today's midget
is located deep in the East Valley area of the Mandelbrot
fractal.  I use the term "Mandelbrot Fractal" because the
Mandelbrot Set consists only of the interior of the lake and the
buds.  (I'm not sure whether the interiors of the midgets, which
are connected by infinitely thin filaments, are considered to be
parts of the main set, or to be separate sets.)  All the fancy
colored bands that surround the lake are not part of the set
itself, but are a fractal whose appearance is determined by
parameters set by humans.  Thus we can make the outside (and
inside also) appear most any way we wish, but unless the basic
formula is changed, the border between inside and outside will
remain unchanged.

As I stated above, today's fractal is located deep in East
Valley.  In this area, the elements become pinched off, making
it a difficult area to color.  When I went to color the FOTD for
today, I tried all the variations of my usual equal iteration
band method without success.  Then I tried the outside=tdis
option.  This option has potential, but it slows down the
rendering by a factor of 10, and time was short.  I finally
decided on the outside=summ option, which adds together the
iteration count, real and imaginary values, and sets the bands
according to the value of the sum.

The summ option reveals a pattern in the image, which at this
extreme depth in East Valley is almost lost in the sand.  The
pinched-off elements are clearly visible, and even have some
detail.  After my effort, I rated the work a 6, and gave it the
name "Midget-Two".

The 25-minute render time may be avoided by giving Paul and
Scott a chance to render and post the image to their respective
web sites at:

          <http://home.att.net/~Paul.N.Lee/FotD/FotD.html>

and:

          <http://sdboyd.dyndns.org/~sdboyd/fotd/index.html>

The fractal weather today featured (if one can call it a
feature) heavy rain and thunder-storms.  It's actually the
remnants of the storm that flooded Houston, Texas about a week
ago.  The storm just doesn't know when to quit.  The temperature
of 77F (25C) was irrelevant, since the fractal cats spent the
day crouched down, sulking because of the wetness and hissing
sound of heavy rain.  The fractal basement survived with only a
couple puddles.

As for me, I've got to get back to that M-set.  The next FOTD is
due in only 12 hours and I've nothing yet to show.  Until then,
take care, and walk with fractals in mind.


Jim Muth
[e-mail]


START PARAMETER FILE=======================================

Midget-Two         { ; time=0:24:49.52--SF5 on a P200
  reset=2001 type=mandel passes=1
  center-mag=+0.25061098021060020/-0.000027092113537\
  83/4.38592e+011/1/-155.001/0.001 params=0/0 float=y
  maxiter=250000 inside=0 outside=summ periodicity=10
  colors=000zg0zj0zn0zl0zl0zj1zj6ziAziEzgJzgNzfRzfXz\
  d`zddzcjzcozaszdzzczzaxz`zzZszYrzXpzVnzUlzSjzRizPf\
  zOdzNczL`zKZzJYzHVzGUzFSzCRzCSzBSzASz9Sz7Sz6Sv5Ss5\
  Sp3Sl3Si3Sd3SZ3SV3SO5OJ5HH5BH5BF5BG5BO5BL6HK9HHBGG\
  CFEEGCFJ9FKAGOBJPCNSEPUESVFXVGZXHaXJfYJiYKlZLpZNs`\
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  0zg3ug7pgBlfFifJdfN`dSYdXUd`PcdNciJcnFdsAcrCcrEcrF\
  crGcrHcrKcrLcpNcpOcpPcpRcpUcpVcpXcoYcoZco`coccodco\
  fcogcnicnjcnncnocnpcnrzd0
  }

END PARAMETER FILE=========================================

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------------------------------

Date: Mon, 18 Jun 2001 01:03:28 -0400 (EDT)
From: Jim Muth <[e-mail]>
Subject: (fractint) C-FOTD  18-06-01  (The Brink of Oblivion [9])

Classic FOTD -- June 18, 2001 (Rating 9)

Fractal visionaries and enthusiasts:

Today's fractal rates a most exceptional 9.  This is not due to
its artistic merit, which is mediocre at best, but to its
mathematical merits, which are unlike anything I have yet come
upon.  The name I gave to the image tells it all -- it is a
picture of a midget on "The Brink of Oblivion.  Oblivion in this
case means an existence only as a vague outline in the random
dots that fill the lower left half of the image.

The imag(p3) parameter tells the entire story.  The slightest
change makes the greatest difference.  If the value is reduced
to 26.6, the midget is all there; if it is increased to 29.7,
the midget totally evaporates.  A midget that had no reality to
start becomes even less real.  The actual value of 29.647, which
equals a bailout of 129.647, catches the midget half there and
half gone.

However, the midget never totally vanishes, for even when the
screen becomes a total blank, the midget's ghost remains in
position, and can be revealed by rendering the scene with an
inside setting of something like bof60.

Since so much of the scene consists of inside area, and the
single-pass algorithm must be used to pick up all the bits and
pieces, the image is a slow one, requiring 25 minutes on a slow
old Pentium 200mhz.  But relief is at hand on the internet at
the web sites of Paul and Scott, where the image will soon be
posted.

Paul's site can be found at:

          <http://home.att.net/~Paul.N.Lee/FotD/FotD.html>

and Scott's is at:

          <http://sdboyd.dyndns.org/~sdboyd/fotd/index.html>

The fractal weather was near perfect today, with brilliant blue
skies and a temperature of 88F (31C).  The fractal cats made up
for the time they lost yesterday by spending most of the
afternoon in the yard, watching for the cat that lives across
the street.  But luckily for someone, the other cat never showed
up.

That's it for now fractal fiends.  Until next fractal, take
care, and always be all there.


Jim Muth
[e-mail]


START 20.0 PAR-FORMULA FILE================================

TheBrinkOfOblivion { ; time=0:24:11.35--SF5 on a P200
  reset=2001 type=formula formulafile=allinone.frm
  formulaname=MandelbrotMix4 function=recip passes=1
  center-mag=-1.789309750688749/-0.9580640953043432/\
  8290.843/1/39.999 params=1/-1.2/-1.2/1/-1.8/29.647
  float=y maxiter=1000 inside=0
  logmap=306 periodicity=10
  colors=000wDkwCmvAov8qv7sv5uv4vpBtjIsdPrZWpTboNhnK\
  QfI7_K9YMBXODVQFUSHSUIRWKQYMO_ONaQLcSKeTJgVHiXGkZE\
  m`DnaCocDpdDqfDrgDsiDsjDtlEumEvoEwpExrExsEsrDoqCkq\
  BfpAbp9Zo8Vo8Qn7Mm6Im5Dl49l35k21k24h37e4Ab4D_5GX5J\
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  cUacXac_acb`ce`ch`ck`cn`cq`ct`cw`czbVfdMNfE42C64F8\
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  PfeOedNedLecKecJebIebKgcMhdNiePjfQkgSlhTmiVnjWokYq\
  kZrl`smatncuodvpfwqgxriys
  }

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: Sun, 17 Jun 2001 23:38:08 -0700
From: jerome schatten <[e-mail]>
Subject: Re: (fractint) C-FOTD  18-06-01  (The Brink of Oblivion [9])

Outstanding!! It has become my wallpaper.
jerome


Jim Muth wrote:
>
> Classic FOTD -- June 18, 2001 (Rating 9)
>
> Fractal visionaries and enthusiasts:
>
> Today's fractal rates a most exceptional 9.  This is not due to
> its artistic merit, which is mediocre at best, but to its
> mathematical merits, which are unlike anything I have yet come
> upon.  The name I gave to the image tells it all -- it is a
> picture of a midget on "The Brink of Oblivion.  Oblivion in this
> case means an existence only as a vague outline in the random
> dots that fill the lower left half of the image.
>

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------------------------------

Date: Mon, 18 Jun 2001 23:38:05 -0400
From: harry <[e-mail]>
Subject: Re: (fractint) C-FOTD  18-06-01  (The Brink of Oblivion [9])

Artistic Merit (mediocre) my @ss !!!

This is a great one. I love it. thanks for posting it. I'd give it a 9.2
!!!

H^) harry

resume lurk mode

Jim Muth wrote:

> Classic FOTD -- June 18, 2001 (Rating 9)
>
> Fractal visionaries and enthusiasts:
>
> Today's fractal rates a most exceptional 9.  This is not due to
> its artistic merit, which is mediocre at best, but to its
> mathematical merits, which are unlike anything I have yet come
> upon.  The name I gave to the image tells it all -- it is a
> picture of a midget on "The Brink of Oblivion.  Oblivion in this
> case means an existence only as a vague outline in the random
> dots that fill the lower left half of the image.
>
> The imag(p3) parameter tells the entire story.  The slightest
> change makes the greatest difference.  If the value is reduced
> to 26.6, the midget is all there; if it is increased to 29.7,
> the midget totally evaporates.  A midget that had no reality to
> start becomes even less real.  The actual value of 29.647, which
> equals a bailout of 129.647, catches the midget half there and
> half gone.
>
> However, the midget never totally vanishes, for even when the
> screen becomes a total blank, the midget's ghost remains in
> position, and can be revealed by rendering the scene with an
> inside setting of something like bof60.
>
> Since so much of the scene consists of inside area, and the
> single-pass algorithm must be used to pick up all the bits and
> pieces, the image is a slow one, requiring 25 minutes on a slow
> old Pentium 200mhz.  But relief is at hand on the internet at
> the web sites of Paul and Scott, where the image will soon be
> posted.
>
> Paul's site can be found at:
>
>           <http://home.att.net/~Paul.N.Lee/FotD/FotD.html>
>
> and Scott's is at:
>
>           <http://sdboyd.dyndns.org/~sdboyd/fotd/index.html>
>
> The fractal weather was near perfect today, with brilliant blue
> skies and a temperature of 88F (31C).  The fractal cats made up
> for the time they lost yesterday by spending most of the
> afternoon in the yard, watching for the cat that lives across
> the street.  But luckily for someone, the other cat never showed
> up.
>
> That's it for now fractal fiends.  Until next fractal, take
> care, and always be all there.
>
> Jim Muth
> [e-mail]
>
> START 20.0 PAR-FORMULA FILE================================
>
> TheBrinkOfOblivion { ; time=0:24:11.35--SF5 on a P200
>   reset=2001 type=formula formulafile=allinone.frm
>   formulaname=MandelbrotMix4 function=recip passes=1
>   center-mag=-1.789309750688749/-0.9580640953043432/\
>   8290.843/1/39.999 params=1/-1.2/-1.2/1/-1.8/29.647
>   float=y maxiter=1000 inside=0
>   logmap=306 periodicity=10
>   colors=000wDkwCmvAov8qv7sv5uv4vpBtjIsdPrZWpTboNhnK\
>   QfI7_K9YMBXODVQFUSHSUIRWKQYMO_ONaQLcSKeTJgVHiXGkZE\
>   m`DnaCocDpdDqfDrgDsiDsjDtlEumEvoEwpExrExsEsrDoqCkq\
>   BfpAbp9Zo8Vo8Qn7Mm6Im5Dl49l35k21k24h37e4Ab4D_5GX5J\
>   V6MS7PP7SM8VJ8YG9_E9XI8VL8SO8QR8NU7LX7I_7Gb7De6Bh6\
>   8k66n64q69k6Ef6Ia6NW6RR6WM6_G6dB6h66i95iB5iD5iF5iH\
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>   cUacXac_acb`ce`ch`ck`cn`cq`ct`cw`czbVfdMNfE42C64F8\
>   6IA8KCANECPGESIGVKIXMK_OMaQOdSQgUSiWUlYVnZXYcZIh`2\
>   ma5nb8nbAncDndFndIneLnfNnfQogSohVohYoi_ojbojdokgok\
>   ioihnhhmghmehldhlcgkagk`gj_giYgiXghWfhVfgTfgSffRfe\
>   PfeOedNedLecKecJebIebKgcMhdNiePjfQkgSlhTmiVnjWokYq\
>   kZrl`smatncuodvpfwqgxriys
>   }
>
> 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: Tue, 19 Jun 2001 09:25:26 +0500
From: "Tony (Anthony) Hanmer" <[e-mail]>
Subject: Re: (fractint) C-FOTD 18-06-01 (The Brink of Oblivion [9])

I agree with the previous comments - this one's a great example that the
Fractiverse, or Fractality, or whatever one wants to call it, is a good deal
stranger and more beautiful than we could imagine.  Fantastic work, Jim.
I'm amazed at the sheer number (well, it's infinite) of variations on a
theme that midgets offer.  Much earlier I was wishing for other types from
you to break the "monotony", but then the pleasure of seeing what can
surround a midget set in, of waiting for what you'll find for the day, and
now I'm hooked.  (Though whatever you choose to depict for us is usually a
wonder.)
Thank you.

Tony Hanmer
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Date: Tue, 19 Jun 2001 04:54:20 -0400
From: "Multiple Bogeys" <[e-mail]>
Subject: (fractint) Midgets...

- ------=_NextPart_001_0001_01C0F87B.E70C9040
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Over the past couple of days I cobbled together a small C program that is=
 possibly the first Mandelbrot autoexplorer designed specifically to home=
 in on midgets -- and if not, then probably the first one that actually w=
orks.

I'd post the source code here, but there're about two thousand lines of i=
t. I'd stick it on the Web but my pages are in a shambles. Besides, the i=
nterface sucks -- it's noninteractive with no parameters, you have to act=
ually edit the source and recompile it to change any of the parameters, a=
nd without varying the parameters it has a limited repertoire. It produce=
s a short zoom sequence (as many as 20 images) of grey-scaled distance es=
timator images that look very nice and tend to close in on a midget (occa=
sionally a bud instead). Occasionally it "backs up" a bit and zooms back =
in in a slightly different spot.<br clear=3Dall><hr>Get Your Private, Fre=
e E-mail from MSN Hotmail at <a href=3D"http://www.hotmail.com">http://ww=
w.hotmail.com</a>.<br></p>

- ------=_NextPart_001_0001_01C0F87B.E70C9040
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<HTML><BODY STYLE=3D"font:10pt verdana; border:none;"><DIV>Over the past =
couple of days I cobbled together a small C program that is possibly the =
first Mandelbrot autoexplorer designed specifically to home in on midgets=
 -- and if not, then probably the first one that actually works.</DIV> <D=
IV> </DIV> <DIV>I'd post the source code here, but there're about tw=
o thousand lines of it. I'd stick it on the Web but my pages are in a sha=
mbles. Besides, the interface sucks -- it's noninteractive with no parame=
ters, you have to actually edit the source and recompile it to chang=
e any of the parameters, and without varying the parameters it has a limi=
ted repertoire. It produces a short zoom sequence (as many as 20 images) =
of grey-scaled distance estimator images that look very nice and tend to =
close in on a midget (occasionally a bud instead). Occasionally it "backs=
 up" a bit and zooms back in in a slightly different spot.<BR><BR></DIV><=
/BODY></HTML><DIV><BR><br clear=3Dall><hr>Get Your Private, Free E-mail f=
rom MSN Hotmail at <a href=3D"http://www.hotmail.com">http://www.hotmail.=
com</a>.<br></p></DIV>

- ------=_NextPart_001_0001_01C0F87B.E70C9040--

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Date: Tue, 19 Jun 2001 00:43:13 -1000
From: "David Jones" <[e-mail]>
Subject: Re: (fractint) Midgets...

Hmm, could you make a command line version that could
take parameters from the command line or via a batch
file, then display the results? Is there some way to
save the results? It sounds like fun!

David
[e-mail]

On 19 Jun 01 at 4:54, Multiple Bogeys wrote:

> Over the past couple of days I cobbled together a small
> C program that is possibly the first Mandelbrot
> autoexplorer designed specifically to home in on midgets
> -- and if not, then probably the first one that actually
> works.
>
> I'd post the source code here, but there're about two
> thousand lines of it. I'd stick it on the Web but my
> pages are in a shambles. Besides, the interface sucks --
> it's noninteractive with no parameters, you have to
> actually edit the source and recompile it to change any
> of the parameters, and without varying the parameters it
> has a limited repertoire. It produces a short zoom
> sequence (as many as 20 images) of grey-scaled distance
> estimator images that look very nice and tend to close
> in on a midget (occasionally a bud instead).
> Occasionally it "backs up" a bit and zooms back in in a
> slightly different spot.


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------------------------------

Date: Tue, 19 Jun 2001 12:58:48 -0000
From: "Andrew Coppin" <[e-mail]>
Subject: Re: (fractint) C-FOTD 16-06-01 (Midget [5])

>From: [e-mail]
>Reply-To: [e-mail]
>To: [e-mail]
>CC: [e-mail]
>Subject: (fractint) C-FOTD  16-06-01  (Midget [5])
>Date: Sat, 16 Jun 2001 10:51:02 EDT
>
>
>Classic FOTD -- June 16, 2001 (Rating 5)
>
>Fractal visionaries and enthusiasts:

I'd rate this one higher if only for the groovy colouring.

Thanks.
Andrew.

_________________________________________________________________________
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Date: Tue, 19 Jun 2001 11:17:20 EDT
From: [e-mail]
Subject: (fractint) C-FOTD  19-06-01  (Quantum Hysteria [8])

Classic FOTD -- June 19, 2001 (Rating 8)

Fractal visionaries and enthusiasts:

Sometimes I just don't know how I find the time to keep the FOTD
going.  Here it is 10:50am of the day of the FOTD, and I'm just
starting to write.  Well, late though it may be, the image is
worth waiting for.

Since one picture is worth a thousand words, I'll save the
thousand words and offer the picture.  The image, which
resembles a universe of bubbles, consists of almost all inside
stuff, made visible by the inside fill of bof60.  While studying
it, trying to find a name, I had a fleeting impression of a
scene in the sub-atomic world of forces and energies.  I named
the image "Quantum Hysteria".

Since the image consists of all inside and the periodicity is
turned off, the parameter file needs almost 1/2 hour to render.
The more efficient way of viewing the image is to go to Paul's
web site at:

          <http://home.att.net/~Paul.N.Lee/FotD/FotD.html>

or to Scott's site at:

          <http://sdboyd.dyndns.org/~sdboyd/fotd/index.html>

and download the finished GIF file from there.

The fractal weather, the least important part of the FOTD, was
perfect today, with sunny skies and a temperature of 88F (31C)
to keep the cats happy.

I'll be happy when I get this work beside me out of the way.
Until next time and next FOTD, take care, and be a friend of
fractals.


Jim Muth
[e-mail]


START 20.0 PAR-FORMULA FILE================================

Quantum_Hysteria   { ; time=0:26:56.29--SF5 on a p200
  reset=2001 type=formula formulafile=allinone.frm
  formulaname=MandelbrotMix4 function=recip passes=1
  center-mag=-0.18005066951765600/-0.181874553498594\
  20/1282.051 params=-1/-1.25/1.25/1/-1.8/1e+150
  float=y maxiter=600 inside=bof60 periodicity=0
  colors=000zzzyyzxxzwwzvvzuuzttzsszrrzqqzppzpoypnxp\
  mwplvpkuojtnismhrlgqkfojemidkhcigbgfaed_caX_YTWUPS\
  PKPKGHGBNC9TD6ZC6`D6bD6dF5fF5hG5jH3lH3nH3pJ3rJ3tL1\
  vJ3xH6zG9wFCvDFsCHrAKo9Nm7Pl6Si5Vh3Ye2`d1ba0e`0fZ6\
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  7Kz5Jz7Hz9HyCGvDGsGFpHDmJDkLChNCePAbR9`S9YV7XX7UZ6\
  R`5Oa5Ld3Je3Gh2Di1Ak17m05o02r00s00z00t20p52l93hD6d\
  G7`KAXOCSRFOVGKzm0mY6YHGL0NJ0OH2PG6RFARDFSCJU9NV7R\
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  1sa0pd0oe0mh0lk0il0ho0fr0es0bv0ay0`z0fz0Zv0Sr0Lm0D\
  i06e00b00d00e10f32h75iC9kFClJFmLHoPLpUOrXRs`UtdYvf\
  `wkbymezrizvlzyozzrzztzzrwwpttopplmmkkiifefdbeaZdz\
  lKldUZXbKOlezp6Gv9JsCKrDNpGOmJPlKSkNUiPVfRYeUZdX`b\
  Yb``dZbeYdhXfiUikSkmRmoPppNrsLttKzzKHzKGzLAzHFzLJz\
  ONzRRzVVzYZz`bzdfzfkziozm
  }

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: Wed, 20 Jun 2001 08:22:37 EDT
From: [e-mail]
Subject: (fractint) C-FOTD  20-06-01  (A Midget at Midnight [7])

Classic FOTD -- June 20, 2001 (Rating 7)

Fractal visionaries and enthusiasts:

Though the render time of today's FOTD is over 2 hours on a
Pentium 200mhz machine, this is at the SF7 resolution.  At the
normal SF5 resolution the image renders in 49 minutes.  I
entered the time comment in the parameter file at the SF7
resolution because today's image is one of those that needs the
highest resolution possible to prevent features that should
appear as tiny filaments from appearing as dots.

The unusually long render time is due to the extreme maxiter of
the image as well as to the fact that the short-cut passes
algorithms are useless.  When I studied the image, I was
impressed by the deep midnight blue surrounding the central
midget.  I named the picture "A Midget at Midnight", a name that
is not only descriptive, but poetic as well.  I rated it at a 7,
a rating that may be a bit liberal.

The scene is one in the classic Mandelbrot set, in a valley of a
tiny bud on the northwest shore of the main bay.  In this area
the scene is close to total chaos.  The points don't know what
to do.  One point may escape after 3000 iterations; it's
neighbor may be still trapped after 1-million.

The overall effect is one of lightning-like filaments or a
network of veins before a background of sandy grit.  But a very
broad color palette does reveal a rudimentary underlying
pattern, as today's image demonstrates.

The passes options other than 1, 2, or 3 are useless in an image
such as this, because so much detail exists that the time the
algorithm spends figuring what to do next is longer than the
time a straight single pass takes.

Although I'm not going to demonstrate the images the Julia
aspects of areas such as today's produce, they are well worth
the time spent in having a look.  The four remaining aspects of
the four-dimensional Julibrot figure are also worth seeing.
Perhaps I'll have time to investigate such things when things
slow down next month.

As I stated earlier, today's image is the slowest in quite some
time.  The most efficient way of viewing the scene is to give
Paul and Scott a chance to render and post the GIF images, and
then go to the web sites where the images will be waiting.

Paul's site is at:

          <http://home.att.net/~Paul.N.Lee/FotD/FotD.html>

Scott's is at:

          <http://sdboyd.dyndns.org/~sdboyd/fotd/index.html>

The fractal weather today was uneventful, with hot sun and a
temperature of 89F (31.5C) to keep the cats happy.

As for me, I've got things that need to be done, and limited
time in which to do them.  So the rational thing is to get busy.
Until next FOTD, take care, and where are those Herman Rings?


Jim Muth
[e-mail]


START PARAMETER FILE=======================================

A_MidgetAtMidnight { ; time=2:05:12.08--SF7 on a P200
  reset=2001 type=mandel passes=1
  center-mag=-0.41357633605202350/+0.574830605134010\
  40/1.332446e+007/1/157.499 params=0/0 float=y
  maxiter=1200000 inside=0 logmap=3000 periodicity=10
  colors=000zG0zG0zG0zI0zI0zI0zK0zK0zK0zM0zM0zM0zM0z\
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  0V00V00V00X00X00X00X00X00Z00Z00Z00Z00Z00`00`00`00`\
  00`00`00a00a00a00a00a00b00b00b02b02b02d02d02d02d03\
  d03g03g03g03g03g06b03d03d03g03g23i23i32i62j62j72l7\
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  T0wV0wV0yX0yZ0zZ0z`0za0za0zb0zb0zd0zg0zg2zg2zg2zg2\
  zg2zg2zg2zg2zg2zg2zg2zg2z
  }

END PARAMETER FILE=========================================

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Date: Wed, 20 Jun 2001 08:59:01 -1000
From: "David Jones" <[e-mail]>
Subject: Re: (fractint) C-FOTD  20-06-01  (A Midget at Midnight [7])

On 20 Jun 01 at 8:22, [e-mail] wrote:

> Classic FOTD -- June 20, 2001 (Rating 7)
>
> Fractal visionaries and enthusiasts:
>
> Though the render time of today's FOTD is over 2 hours
> on a Pentium 200mhz machine, this is at the SF7
> resolution.

First time I ever actually ran the PAR, rather than go
look att he picture on the web. 27 minutes on a Duron
700, running Fractint under OS/2 with an MP3 player
running simultaneously. Now lets try it at 2048x2048!
;-)

Well worth it for such a delightful picture - I think
I'll do it more often! Thanks, Jim!

David
[e-mail]


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Date: Wed, 20 Jun 2001 14:06:03 -0500
From: Programmer Dude <[e-mail]>
Subject: Re: (fractint) C-FOTD  20-06-01  (A Midget at Midnight [7])

David Jones wrote:

> Now lets try it at 2048x2048!

And maybe make this hi-rez version available to the rest of us?....

FWIW, I'd be willing to put hi-rez versions of Jim's great images on my
website for a brief while (brief while per image)....  I just don't have
the time to actually *make* the images...

- --
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|_ http://www.Sonnack.com/ ___________________| Call: 1-800-DEV-NULL  |
|_____________________________________________|_______________________|

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End of fractint-digest V1 #574
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