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fractint-digest       Monday, February 16 1998       Volume 01 : Number 111




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

Date: Sun, 15 Feb 1998 22:17:48 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) More Herman Rings (long)

Hi all,
You can find my collection of Kerry's posts on my web site...
http://home.san.rr.com/jayrhill/MITCHELL.ZIP

updated just now!

Jay

- ----------
> From: Kerry Mitchell <[e-mail]>
> To: [e-mail]
> Subject: (fractint) More Herman Rings (long)
> Date: Sunday, February 15, 1998 9:58 PM
>
> comment { ; narrative copyright Kerry Mitchell 15feb98
>
> Higher order Herman Rings
>
> In Paul Derbyshire's posting about Herman Rings, he gave a formula
[...]
>           z=cos(angle)+flip(sin(angle))
>           iter=-1
>           end if
>         iter>0
>         }
>
>
- -------------------------------------------------------------------------------
> Kerry Mitchell
> [e-mail]
>
- -------------------------------------------------------------------------------


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

Date: Mon, 16 Feb 1998 01:25:29 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) More Herman Rings (long)

Thanks a chunk Kerry! I'll be sure to check these out ASAP!

- --
    .*.  Friendship, companionship, love, and having fun are the reasons for
 -()  <  life. All else; sex, money, fame, etc.; are just to get/express these.
    `*'  Send any and all mail with attachments to the hotmail address please.
Paul Derbyshire [e-mail] [e-mail]

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

Date: Sun, 15 Feb 1998 22:31:46 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) More Herman Rings (long)

Hay guys,

Look what I found in Kerry's pictures. Great work Kerry!

Jay


midget-four-j      { ; Jay Hill's zoom in on Mitchell's 15feb98 image
  reset=1960 type=formula formulafile=mhermanr.par
  formulaname=herman_man-cart center-mag=-1.92063/4.91353/3.545246
  params=4/4/0/1/-1/0 float=y maxiter=256 inside=0 decomp=256
  periodicity=0
  colors=000<44>00u00w00x00z00z<11>0\
  7z08z09z0Az0Bz<27>0jz0lz0mz0oz0oz<11>6\
  wt7xs8yr9zqAzp<45>xz2zz0zz0<44>zT0zS\
  0zR0zR0yQ0yQ0<9>sL0rK0qJ0pI0oI0<12>Z\
  C0YC0WB0UB0<13>210 cyclerange=0/255
  }



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

Date: Mon, 16 Feb 1998 06:21:10 -0500
From: Robi Hamilton <[e-mail]>
Subject: Re: (fractint) Lee's PNG Images

At 08:05 PM 15/02/98 -0800, you wrote:
>I surfed over to Lee Skinner's pages today with my nice new shiney Netscape
>Communicator 4.04......but I couldn't see the png images!!!!  a total
>disappointment.  What I got instead of pretty pictures was code......well
>over 1.1 meg of code per pic...<<blech>>.
>Angela
>
>ps...lee's site is at http://fractal.mta.ca/fractals/skinner/skinner.htm
>
>-Try a single click with left mouse button on image you want to open. I
just installed Navigator 4.04 yesterday, and this worked like a charm for me.
Robi Hamilton
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>
>


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

Date: 16 Feb 98 10:55:11 GMT
From: [e-mail] (Wim de Lange)
Subject: Re: (fractint) Carlson Map for Julias

Op 15 Feb 98 om 21:08 schreef [e-mail] over:
"Re: (fractint) Carlson Map for Juli"

> Here's another branch on the gravijul tree.

Can you resend the formula(s) that are in gravijul? I can't locate it
anymore.


Groetjes,
    Wim de Lange
 _____________________________________

 Internet:    [e-mail]
 CompuServe:  100142,604
 _____________________________________


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

Date: Mon, 16 Feb 1998 07:23:33 -0500
From: "Jason Hine" <[e-mail]>
Subject: Re: (fractint) Avogadro's number

>> Peter J. asked:
>>
>> >Is there any significance to blowing up the M-set by Avogadro's number
>> >other than for the fun of it?
>>

I then suggested:
>> Or how about the Planck length?  Amazing how these extreme numbers don't even
>> come close to Fractint's limits...
>
Justin then pipes up:

>Circumference of the universe, anyone?  :)  Maybe someone with a LOT of
>time to spare (like me) could make a web page dedicated to this stuff...

Just one more idea - isn't there a unit of time which corresponds to the Planck
length?  How many of these units of time have passed since the begnning of the
universe?  Lessee...
Lee Smolin describes the Planck unit of time as 10exp-43 seconds.  Now,
according to Roger Penrose, there is a debate as to the actual age of our
universe, with estimates ranging from 6x10exp+9 to 1.5x10+10 years.  Assuming
the younger figure is correct, then the number of Planck time units that have
passed since the Beginning is ~ 1.89x10exp+62

Hmmm... not a very big number, says Fractint!  :)

Jason Hine


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

Date: Mon, 16 Feb 1998 08:27:00 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Crash!

Paul,

>>This is symtomatic of the occasional Fractint encoder/decoder bug...

>Encoder/decoder bug? It didn't hang during an autosave, or a load...

True.  It's often more subtle than that.  Once a slightly corrupted image=

is read back in, the program can sometimes continue generating a few line=
s
- - then BANG!  It may be a variable in the extension blocks that gets
corrupted!

Lee

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

Date: Mon, 16 Feb 1998 08:27:01 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Lee's PNG Ima

Hi Wiz,

>>I surfed over to Lee Skinner's pages today with my nice new shiney
Netscape Communicator 4.04......but I couldn't see the png images!!!!  a
total disappointment.  What I got instead of pretty pictures was
code......well over 1.1 meg of code per pic...<<blech>>.

If you have Paintshop Pro installed, Navigator 4.04 will use it to displa=
y
the PNG images.  If you downloaded a PNG image, a viewer such as QPV can
view it from DOS.

>> And why were Lee's files so huge? even my biggest 1024 x whatever gif =
is
less than a meg....I thought png was a better method of compression. Seem=
s
like we may not quite be there png-wise.<<

Apples and Oranges!  Gif displays 256 colors at 8 bits per pixel.  An 8-b=
it
PNG usually compresses a lot tighter than a GIF.  But these particular PN=
G
images are Trucolor with 24 bits per pixel! The PNG images are also at
1024x768, while the other 90% of the images on the site are smaller 800x6=
00
gif images.  All of the PNG images also have a 1024x768 "embossed" JPG
image associated with them, which look slightly different, but CAN be
viewed if you can't see the PNG files. There are also PNG plug-ins
available for both Netscape and Microsoft Explorer, which I hope somebody=

here can tell us where we can find them on the net.

Lee

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

Date: Mon, 16 Feb 1998 09:20:57 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: (fractint) PNG and Lee Skinner

The PNG Live plugin
http://speedy.siegelgale.com/solutions/
has worked for me.
Lee, where is your gallery, so I can check it out, pls., with yr images?


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

Date: Mon, 16 Feb 1998 16:36:50 +0100
From: Peter Otterstaetter <[e-mail]>
Subject: Re: (fractint) Partobat fix

Mike or Linda Allison wrote:
>
> I finally ran into the "half file" partobat problem, too, running v3.4.
> I know there is a fix out there somewhere, but I can't find it!  Can anyone
> point me in the right direction?

I got a perl script from Rich Thomson. Here it is; hope this can help
you.

Peter

- --- begin of Rich Thomsons message ---

Here's the script, hope you find it useful.  One thing it does that
partobat doesn't do is resume a partially completed image.  Unlike
partobat, it doesn't require any other DOS executables (it uses DOS
files as markers to know which images have completed).  The usage is
like this:

    perl partobat.pl [-u] [-o outfile] parfile1 ... parfileN
        par1=value1 ... parM=valueM

- -u      Enforce unique savename for each image
- -o      Specify name of output batch file [stdout is default]
parfile Names of parfile to process.  Everything goes into one batch
        file.
par=value
        You can add extra parameters to override anything in the
        parfile you don't want (video mode, savename, showdot, etc.)

If something doesn't make sense, let me know and I'll be happy to
explain.
- --
                                                Rich Thomson
                                                [e-mail]


#!/usr/local/bin/perl
#
# parbat.pl -- construct an MS-DOS batch file to render every
#              parameter set inside a fractint .par file.
#
# Rich Thomson <[e-mail]>
# February 5th, 1998
#
# Copyright (C) 1998, Rich Thomson.  You may use and share this
software,
# provided you don't sell it.
#
my($fractint) = 'c:\dosapps\fractint\fractint';
my(%extras) = (
  'batch',      'yes',
  'video',      'af6',
  'savetime',   '180',
  'savename',   'batch001.gif'
);
my($extras) = '';
my($unique_savename);
my($label) = 1;

sub process_file {
  my(@files) = @_;
  my($parfile, $head, $count, $tail);

  if (defined $unique_savename) {
    ($head, $count, $tail) =
      ($unique_savename =~ m/^(.*[^0-9])([0-9][0-9]*)([^0-9]*)$/);
    $head = 'batch' unless defined $head;
    $count = '001' unless defined $count;
    $tail = '.gif' unless defined $tail;
  }

  foreach $parfile (@files) {
    # print STDERR "Processing $parfile\n";
    open(PAR, "<$parfile") || die "read $parfile: $!";

    my($par, $savename, $savefile);
    print BAT "rem parbat.pl processing $parfile\n";
    print BAT "rem Date: ", scalar(localtime), "\n";
    print BAT "\n";
    while (<PAR>) {
      if (/^\s*(\S+).*{/) {
        $par = $1;
        if (defined $unique_savename) {
          $done_file = $head . $count . '.don';
          print BAT "\@if exist $done_file goto D$count\n";
        }
      }
      print BAT (length($_) > 1) ? "rem $_" : "\n";
      if (/}/) {
        if (defined $unique_savename) {
          $savefile = $head . $count . $tail;
          $savename = " savename=$savefile";
        } else {
          $savename = '';
        }

        my($cmd) = qq|$fractint \@$parfile/$par$extras$savename|;
        if (defined $unique_savename) {
          my($done_file) = $head . $count . '.don';
          print BAT <<"EOBAT";
\@if not exist $savefile goto R$count
$fractint batch=yes overwrite=yes savename=$savefile $savefile
\@if errorlevel 2 goto quit
\@goto S$count
:R$count
$cmd
\@if errorlevel 2 goto quit
:S$count
\@echo $count > $done_file
:D$count
EOBAT
          $count++;
        } else {
          print BAT "$cmd\n";
        }
      }
    }
    close(PAR);
  }
}

sub main {
  my($parfile, $batfile);
  while (@_) {
    my($arg) = shift @_;
    # print STDERR "Argument: $arg\n";
    if ($arg =~ /^-(.+)$/) {
      # print STDERR "Switch: $1\n";
      my($sw) = $1;
      if (($sw eq 'o') && scalar(@_)) {
        $batfile = shift @_;
      } elsif ($sw eq 'u') {
        $unique_savename = 1;
      } else {
        die "Unknown switch: $sw\n";
      }
    } elsif ($arg =~ /^(..*)=(..*)$/) {
      my($tag, $value) = ($1, $2);
      $tag =~ tr/A-Z/a-z/;
      $extras{$tag} = $value;
    } else {
      # print STDERR "Input: $arg\n";
      push(@inputs, $arg);
    }
  }

  if ($unique_savename) {
    $unique_savename = $extras{'savename'};
    delete $extras{'savename'};
  }
  my($key);
  foreach $key (keys %extras) {
    $extras .= " $key=$extras{$key}";
  }
  if (defined $batfile) {
    open(BAT, ">$batfile") || die "write $batfile: $!";
  } else {
    open(BAT, ">&STDIN") || die "Can't dup STDIN: $!";
  }
  print BAT join(' ', 'rem', @ARGV), "\n";
  if (scalar(@inputs)) {
    &process_file(@inputs);
  } else {
    &process_file('-');
  }
  print BAT ":quit\n";
  close(BAT);
}

# print STDERR "ARGV:\n ``", join("''\n ``", @ARGV), "''\n";
main(@ARGV);
__END__
fractint batch=yes @cellular.par/BYTE_Photo_6_rev1 VIDEO=F2 SAVETIME=180
fracbat /D BYTE_Photo_6_rev1
fractint batch=yes @cellular.par/BYTE_Photo_6_rev2 VIDEO=F2 SAVETIME=180
fracbat /D BYTE_Photo_6_rev2
fractint batch=yes @cellular.par/BYTE_Photo_6_rev3 VIDEO=F2 SAVETIME=180
fracbat /D BYTE_Photo_6_rev3
fractint batch=yes @cellular.par/checkerboard_not VIDEO=F2 SAVETIME=180
fracbat /D checkerboard_not

- --- end of Rich Thomsons message ---

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

Date: Mon, 16 Feb 1998 18:12:29 +1
From: "J.P. Louvet" <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

le 16 Feb 98 a 8:27, Lee Skinner ecrivait (Lee Skinner wrote) :

> Hi Wiz,
>
> >>I surfed over to Lee Skinner's pages today with my nice new shiney
> Netscape Communicator 4.04......but I couldn't see the png images!!!!  a
> total disappointment.  What I got instead of pretty pictures was
> code......well over 1.1 meg of code per pic...<<blech>>.
>
> If you have Paintshop Pro installed, Navigator 4.04 will use it to
> display the PNG images.  If you downloaded a PNG image, a viewer such as
> QPV can view it from DOS.

For Lee,

Same problem with IE4.
Solution : you must have your PNG pic included into an empty (except the
pic) HTML page, and it will be displayed with IE4. I think that the same
will occur with Netscape.


Jean-Pierre louvet : [e-mail]
Fractal album :
http://graffiti.cribx1.u-bordeaux.fr/MAPBX/louvet/jpl0.html

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

Date: Mon, 16 Feb 1998 09:31:39 -0800
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) Carlson Map / gravijul

comment {
At 10:55 AM 2/16/98 GMT, Wim de Lange wrote:

>Can you resend the formula(s) that are in gravijul? I can't locate it
>anymore.

Okay folks, sorry.  The inconvenience of having to resend the .frm
every time is annoying, and I occasionally forget, but it appears to
be necessary.  To make it worth the effort, here's a re-post of the
last .par , the .frm, and another par hot off the press.

Bud
}

gj161              { ; "Shear", refined gj16 - (c) Bud 2/15/98
  reset=1930 type=formula formulafile=*.frm formulaname=gravijul
  function=recip/tan/sqrt passes=t
  center-mag=0/0/0.45
  params=0.95/0/0.1/0/2.95/0 float=y maxiter=300 inside=200
  outside=atan
  colors=NJX<2>NJ_OK`OKaPLbPLc<4>ROhSOhTPiUPiVQj<4>_Tm`UnaVnbWocXodYpeZqf_\
  q<2>idtjfulhvnjvolwqnx<5>zzz<30>2WW0VV0UU<14>0FFzzz000<162>000
  }

gj171              { ; improved gj17 - (c) Bud 2/15/98
  reset=1930 type=formula formulafile=budz.frm formulaname=gravijul
  function=recip/tan/asin passes=t
  center-mag=0/0/0.6 params=1.19/0/0/0/4/0
  float=y maxiter=300 inside=200 outside=atan
  colors=0K0<37>0u0cv0<5>ww0<13>gg0ef0de0bc0ab0<6>TV0SU0SS0SR0<16>z00<20>Y\
  TwWVzVWz<20>0zz<42>x2zz0zz0y<34>yNByOAxOA<35>0K0u3Yt2Z0K0
  }

frm:gravijul { ; generalized r^(-2) by Mark "Bud" Christenson 1/25/98
; defaults: p1 = (1,0) p2 = (0,0) p3 = (4,0)
   z = pixel:

   w = fn1(z)
   z = fn3(p1/fn2(w*w)) + p2
    |z| < p3
  }



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

Date: Mon, 16 Feb 1998 12:07:17 -0700
From: Rich Thomson <[e-mail]>
Subject: Re: (fractint) 3D transformations

In article <[e-mail]> ,
    Bob Margolis <[e-mail]>  writes:
> Unfortunately none of these is in print, but sometimes
> can be found through book dealers selling remainders, such as Edward R.
> Hamilton bookseller, Falls Village, CT 06031-5000.

Tim Wegner's "Fractals for Windows" book is currently available there (a
steal at $6 + $3 shipping!):
<http://www.hamiltonbook.com/titles/9/6/2/962481.html>
- --
                                               Rich Thomson
                                               [e-mail]

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

Date: Mon, 16 Feb 1998 14:52:52 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Fractal Dimensions CDROM

Hi Fractalliers and Fractaholics,

   I'd like to take this opportunity to announce my fourth commercial
CDROM of fractal art, "Fractal Dimensions".  This new CD has 2628 of my
latest and best images made with Fractint, and is made to be accessible
via your CD-drive and your favorite web browser.  Most of the images are
800x600 resolution, although there are around 150 trucolor PNG files at
1024x768.  Pars and formulas for all of the images are included.  But,
if you wish to check it out over the internet, the ENTIRE CD (650+Mb) is
now on-line at the following super web-site courtesy of Michael Taylor:

http://fractal.mta.ca/fractals/skinner/skinner.htm

  I am selling the CD directly for $39.95, but for a limited time, I
will sell to readers of Compuserve's Graphdev section, the Fractint,
Fractdev, and Fractal-Art Mailing Lists at a 25% discount ($29.95). Just
mention that you saw the offer here.  With 393 html pages full of
thumbnails and 2628 images 800x600 or larger, this is less than one cent
per html page or image.  Add $5. s&h for USA orders, $10 (U.S.) outside
the USA for priority mail delivery.  New Mexico residents add 5.8%
sales tax.  Checks OK, no credit cards. Of course, you can download it
(650Mb) off of the web site for free by visiting a different page of
thumbnails and associated images daily for the next 15 months!

Lee H. Skinner
P.O. Box 14944
Albuquerque, NM  87191

Please allow a reasonable time for delivery, but I'll get them out ASAP.
The CDs are available now and will be shipped Priority mail.

This is a PC CDROM and may not be viewable on other platforms such as
the MacIntosh without proper software.

You can also use Fractint to view the gifs (and zooms into them, etc.)
directly from the CD.  You will need other viewers to view the PNG and
JPG images.  QPV is a DOS viewer, Paintshop Pro or Graphics Workshop will=

view them under Windows 3.1 or Win95.  You can also get a PNG plug-in for=

your browsers.

Lee Skinner

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

Date: Mon, 16 Feb 1998 12:13:26 PST
From: NOEL_GIFFIN <[e-mail]>
Subject: Re: (fractint) spanky fractal database ups and downs

 (Paul Derbyshire) wrote:

> It's been pretty good in my estimation. Every problem I've heard of has
> been aging/bad hardware. What software do you use for:

> * O/S
> * Web server
> * Mail
> * TCP/IP low level networking for the web/mail server
> * FTP service?


    Well you can laugh or cry depending on your disposition
but here is Spanky's configuration.

    Microvax 3400 running VAX/VMS v 5.5-2HW in 12 MBytes RAM

    webserver software is the OSU DECTHREADS HTTP server for VMS
    and OPENVMS written by David Jones at Ohio State (freeware)

    The mailer is the mx mailer from mad-goat software

    the tcp/ip interface is multinet v 3.4 from TGV and that
    handles ftp access as well.


    I think it is a credit to all the people responsible for the
above software packages that allow a computer that has the performance
level of about an Intel 386 system to compete in today's internet. I
think Dave Jones at OSU should be particularly hilighted. His server
has to be one of the most robust and efficient servers ever designed.
Too bad it's only for VMS.

    I apologise for replying to the above off topic thread, but I
thought others in the list might be interested.

    Cheers,
    Noel Giffin


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Date: Mon, 16 Feb 1998 15:19:43 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Stretch

Jay,

  Are the 2 pars below resolution dependent?  If so,
how would I modify ymax for a 1600x1200 image?

Stretch800x600 { ; Jay Hill, 1998
; use 800x600, about 2 hours P200
reset=3D1960 type=3Dformula formulafile=3Dcolor101.par
formulaname=3DStretch1 corners=3D0/2.77/0/382.9268 float=3Dy
    ...                                ^^^^^^^

Stretch640x480 { ; Jay Hill, 1998
; use 640x480, takes an hour on P200
reset=3D1960 type=3Dformula formulafile=3Dcolor101.par
formulaname=3DStretch1 corners=3D0/2.77/0/306.5324 float=3Dy
    ...                                ^^^^^^^

Lee

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Date: Mon, 16 Feb 1998 14:57:00 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Lee's PNG Ima

Hi All,

   Regarding the web-site, here are summarized some of the comments
regarding the PNG files and my response to to them:

>> "Solution : you must have your PNG pic included into an empty (except =
the
pic) HTML page, and it will be displayed with IE4. I think that the same
will occur with Netscape."

- -----  Jean-Pierre louvet : [e-mail]<<

Hopefully, this is not the ONLY workaround.  Read on:


>>  "People seem to be having a problem viewing Lee's Png images
from your web server. I'm not sure what web server software you are
using but you are going to have to add the png format type to the
list of recognized suffixes in your servers configuration file.
You will need a line something like the following:

=2ENEXT .png image/png  BINARY

  You will have to restart the server as well be for this
comes into effect as well I imagine."

- ----- Noel Giffin to Michael Taylor (who is temporaily away)

This would be a good fix if it works!  But Michael may not be back
for a while.

"   Thanks so much for the great batch of stuff you just put up.  I tried=

using them though and got a failure on the video mode.  You seem to be
calling out a mode not listed with a shortcut on my version of Fractint.
I am running 19.6 on a WIN95 machine.  ! I figured that you are using
5-5-5 Truecolor, so I tried that.  It generates, but it looks nothing
like your thumbnails.  Any suggestions?  And what version Fractint do
you use?"

- ----- Marty Krikorian

You cannot as yet view PNGs with the current version of Fractint.  Until
version 20 is out, PNGs must be viewed with a browser plug-in, Paintshop
Pro, QPV, Graphics Workshop or any other PNG viewer.

>> "The PNG Live plugin
http://speedy.siegelgale.com/solutions/
has worked for me.
Lee, where is your gallery, so I can check it out, pls., with yr images?"=


- ----- Peter Jakubowicz <[e-mail]>

The gallery is at: http://fractal.mta.ca/fractals/skinner/skinner.htm

Peter, does this plug-in solve the problems accesing the PNGs at
Michael's site??

At this point, I cannot make any corrections to the CD as I have just rec=
eived
them from the the duplicator.  But, compared to viewing the images from m=
y
web site, you view everything at light-speed on the CD!

Lee

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Date: Mon, 16 Feb 1998 16:29:18 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

At 02:57 PM 2/16/98 -0500, you wrote:
Lee,

>Peter, does this plug-in solve the problems accesing the PNGs at
>Michael's site??

For some reason the plug-in works fine at the Spanky site, but the images
opened in Picture Publisher 7 (my graphics editor) instead at Michael's
site <???> Did he arrange things, so the images are downloaded to one's own
disk instead of just being viewed on site?


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Date: Mon, 16 Feb 1998 15:37:02 -0600
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

Peter,

 - For some reason the plug-in works fine at the Spanky site, but the images
 - opened in Picture Publisher 7 (my graphics editor)

Then it's not working fine, it's just opening the file in Windows and
hoping Windows knows what to do with it.  (Which it does, because PP7
supports PNG files and when it's installed it registers with Windows that
it will handle those files.)

Using IE4, I can only view PNG files when they are referenced by an <IMG>
tag in an HTML file; a link directly to a PNG file will bring up the normal
"Open/Save" dialog for file types that IE can't handle on its own.  Go figure.

Personally, I think it's premature to use PNG files on a web site, but
given the nature of this particular site (an online mirror of a CD-ROM)
it's understandable. :)

Damien M. Jones   \\
[e-mail]  \\  http://www.icd.com/tsd/ (temporary sanity designs)
                    \\  http://www.fractalus.com/ (fractals are my hobby)

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Date: Mon, 16 Feb 1998 17:01:58 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

At 03:37 PM 2/16/98 -0600, you wrote:
>Peter,
>
> - For some reason the plug-in works fine at the Spanky site, but the images
> - opened in Picture Publisher 7 (my graphics editor)
>
>Then it's not working fine, it's just opening the file in Windows and
>hoping Windows knows what to do with it.

No. The plug-in worked at the Spanky site (I viewed the images in the
browser. It was at that other site (*Michael's*) where it opened in PP7.

Peter


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Date: Mon, 16 Feb 1998 15:59:12 -0600 (CST)
From: [e-mail] (Paul and/or Joyce Carlson)
Subject: (fractint) Two-piece Jigsaw Puzzle

Here's a formula that produces Julia sets that I find fascinating.
The Julia sets produced by the two accompanying pars are not
particularly pretty since they only use two colors, but I did them
this way to show what I think is mind-boggling about the images.
Imagine a jigsaw puzzle with only two pieces, each piece having
infinitely complex edges.  When fitted together the two pieces fit
perfectly - no gaps.  Now, here's the mind boggling part: the two
pieces are identical! I don't know - maybe I'm too easily impressed,
what do you think?

These images take a while to complete - the minimum number of
iterations for the first one is 1,000 and for the second one
is 2,000.  I suggest you try them at 640x480 resolution.

There are several other (faster and prettier) ways to render this
formula that I'll post sometime later, but give this a try.

Paul Carlson


Frm:TwoPieces {; Copyright (c) Paul W. Carlson, 1998
    ;****************************************************
    ; Always use floating point math and outside=summ.
    ;
    ; Parameters:
    ;   p1       = Julia set coordinates
    ;   real(p2) = the iteration count at which the value
    ;              of w is saved for periodicity checking
    ; Note that the equation variable is w, not z.
    ;****************************************************
    w = pixel
    c = p1
    save_iter = real(p2)
    iter = 0
    bailout = 0
    color = 0:
    ;****************************************************
    ; The equation being iterated.
    ;****************************************************
    w = c * (w - 1 / w)
    ;****************************************************
    ; if iter = save iter, save real(w) and imag(w)
    ;****************************************************
    IF (iter == save_iter)
    sr = real(w)
    si = imag(w)
    ENDIF
    ;****************************************************
    ; check if orbit is reapeating (periodicity check)
    ;****************************************************
    IF (iter > save_iter)
    IF (abs(real(w) - sr) < 0.00001 && abs(imag(w) - si) < 0.00001)
        ;****************************************************
        ; if it is, set color based on if imag(w) is + or -
        ; and set bailout flag.
        ;****************************************************
        bailout = 1
        IF (imag(w) >= 0)
        color = 1
        ELSE
        color = 2
        ENDIF
    ENDIF
    ENDIF
    ;****************************************************
    ; Since we are using outside=summ, z is equal to the
    ; color number minus the number of iterations.
    ;****************************************************
    iter = iter + 1
    z = color - iter
    ;****************************************************
    ; Finally, we test for bailout
    ;****************************************************
    bailout == 0
}

tp1      {; Copyright (c) Paul W. Carlson, 1998
  reset=1960 type=formula formulafile=2pieces.frm
  formulaname=TwoPieces passes=t
  center-mag=8.88178e-015/-7.10543e-015/0.1051594
  params=0.08500000000000001/0.305/1000/0
  float=y maxiter=5000 inside=0 outside=summ
  colors=000O00phV000<251>000
  }

tp2      {; Copyright (c) Paul W. Carlson, 1998
  reset=1960 type=formula formulafile=2pieces.frm
  formulaname=TwoPieces passes=t
  center-mag=8.88178e-016/-8.88178e-016/0.2484848
  params=0.959239583333333/-0.20420833333333/2000/0
  float=y maxiter=5000 inside=0 outside=summ
  colors=000O00phV000<251>000
  }


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Date: Mon, 16 Feb 1998 17:05:06 EST
From: [e-mail]
Subject: Re: (fractint) Avogadro's number

In a message dated 98-02-15 22:50:46 EST, [e-mail] writes:

<< Circumference of the universe, anyone?  :)  >>

  Umm... Isn't that a pretty big number? I doubt even Fractint could do a zoom
that high. :-P Recent theory places the diameter of the universe at
10^(10^12), which is kind of big. Let me see. Radius is one half diameter, so
2 times 10^((10^12)-1), circumference equal pi r squared, 10^((10^12)-1) times
3.1415926535 equals... umm... ::Tries his TI-92, but just gets "infinity":: A
REALLY BIG NUMBER. And seeing as how Fractint's limit is 10^1500 or so, I
doubt it could get that high. :-P

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Date: Mon, 16 Feb 1998 14:10:17 PST
From: NOEL_GIFFIN <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

    Hi all,

    I'm fairly certain that the problem with viewing Lee's PNG files from his
new gallery stems from a fault at the Mt. Allison web server. PNG is a relatively
new format and most servers browsers have to be told how to handle it. Servers
figure out how to serve files from file suffixes. ".txt" is ascii text, while
".exe" and ".gif" are binary types, etc. I'm not sure what server Michael is using,
but it looks like it is defaulting to sending the ".png" type as ascii text
so that peoples web browsers try to display it as an inline document. I'm
confident that when Michael returns and updates his configuration file, his server
will serve the PNG format without any trouble. I had to update mine in order to
do the same. PNG is not that widespread in its use yet, but I feel that it is
a useful format and superior in many ways to gif and jpg and only by using it
will it get propogated.

    Cheers,
    Noel Giffin

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Date: Mon, 16 Feb 1998 16:12:30 -0600
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) Lee's PNG Ima

Peter,

 - No. The plug-in worked at the Spanky site (I viewed the images in the
 - browser. It was at that other site (*Michael's*) where it opened in PP7.

Oh, then please disregard... sorry. :)

Damien M. Jones   \\
[e-mail]  \\  http://www.icd.com/tsd/ (temporary sanity designs)
                    \\  http://www.fractalus.com/ (fractals are my hobby)

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Date: Mon, 16 Feb 1998 17:18:05 -0500
From: davides <[e-mail]>
Subject: Re: (fractint) Carlson Map / gravijul

At 09:31 AM 2/16/98 -0800, you wrote:
(snipped)

>Okay folks, sorry.  The inconvenience of having to resend the .frm
>every time is annoying, and I occasionally forget, but it appears to
>be necessary.

(snipped)

Maybe you should just make it a part of your sig.
:)
I know - off topic, and I will try to find time to generate a a fractal
worth having a par submited as payment. May be a couple/few days...



[e-mail]
Back up my hard drive?
How do I put it in reverse?

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Date: Mon, 16 Feb 1998 14:10:40 -0800
From: "Jay Hill"<[e-mail]>
Subject: Re: (fractint) Stretch

Lee wrote asking what Stretch 1600 parameters would be

Try this

Stretch1600x1200 { ; Jay Hill, 1998
; use 1600x1200, about 24 (?) hours P200
reset=1960 type=formula formulafile=color101.par
formulaname=Stretch1 corners=0/2.77/0/ 764.8986564996 float=y
...

The formula is (2n+k)/pi  where n is the vertical lines, and k is
related to the number of cycles in the image.  If k=2/3, we get
one cycle.   I'm getting a little more than 2 cycles with k=3.

Now note that this drops very deep into the seahorse valley,
namely to the 1200th bud. So the maxiter may have to be greater
and it will take a LONG time to compute. Try it as shown above,
to see if the maxiter is OK, look at 100 or so scan lines with
passes=2.   If it is, switch to passes=g and wait......

Looks like a batch mode back ground job to me.   :-(...es


Jay



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End of fractint-digest V1 #111
******************************