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fractint-digest         Monday, March 30 1998         Volume 01 : Number 148




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

Date: Sat, 28 Mar 1998 23:37:14 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) 640K

Paul Derbyshire wrote:
>
> Fractint 19 will run in 640K won't it? I heard it runs on even old 286's
> without any extended memory at all...

Well, the old 286 part is right, though when I tried it "just for kicks" I had
1 meg in mine :-).  Can't remember if I had it set to expanded or extended,
though.  Does Fractint prefer one over the other?

Justin K.
- --
I sense a great disturbance in the Source.
Justin A. Kolodziej
I am [e-mail]
Marquette University is http://www.mu.edu

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

Date: Sun, 29 Mar 1998 00:54:34 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) how 'bout a deep-zoom contest

>
>>> is anyone interested in an M-set deep-zoom contest?
>
>  NO, PLEASE!  Not deep-zooms!!!  I don't want to tie up my computer with
>those - generally boring - images, and I don't want to download them (my
>phone bill is already way too high...).

Since the list dopesn't allow binaries, they'd be submitted by some other
method... a.b.p.f or maybe FTP to someplace someone sets up for the
purpose. (The latter, preferably, since my newsfeed doesn't pick up a.b.p.f.)


- --
    .*.  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, 29 Mar 1998 00:33:25 -0600
From: Felix <[e-mail]>
Subject: Re: (fractint) Xfract rpms

Damien M. Jones wrote:

> RPM = Red Hat Package Manager, a method for distributing files to be
> installed on UNIX systems.  RPM ships with Red Hat Linux, which you can buy
> or download.  Generally I find it much easier to download and install an
> RPM with pre-compiled binaries than to download, install, compile, and
> troubleshoot source code. :)
>

    Exactly.  Sorry for the confusion, but I thought someone who didn't know
what they were wouldn't know where they were either.  Spanky only has the
gzipped versions, but install/uninstall and upgrading is so much easier with
RPM...    I've found a few packages here and there, but not the latest (3.04)
version.
    So does anyone know?

thanks
 --Andrew

- --
| Andrew Duhan    |     Cereal is     |
| [e-mail]  |       g00d.       |
| http://chimera.acs.ttu.edu/~aduhan/ |



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

Date: Sun, 29 Mar 1998 02:24:35 -0500
From: "Peter Gavin" <[e-mail]>
Subject: Re: (fractint) deep-zoom contest

Hmm...  this calls for a C++
arbitrary-precision-floating-point-variable-encapsulator class...


- -----Original Message-----
From: Paul Derbyshire <[e-mail]>
To: [e-mail] <[e-mail]>
Date: Sunday, March 29, 1998 12:53 AM
Subject: Re: (fractint) deep-zoom contest


|
|Hate to burst your bubble Pete, but Fractint won't deepzoom a formula
|fractal >:(
|
[snip]


Pete
<[e-mail]>


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

Date: Sun, 29 Mar 1998 11:44:29 +0100
From: "Les St Clair" <[e-mail]>
Subject: Re: (fractint) par archive (was: gravijul)

Lav,

>Thanx Les!! That saved me a TON of time.<


You're welcome!

BTW, a useful search word for dragging pars out of the Fractint archive is
"reset="
This takes you nicely from par to par.

cheers, Les



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

Date: Sun, 29 Mar 1998 07:17:51 -0500
From: Sylvie Gallet <[e-mail]>
Subject: (fractint) formula trouble, pars

Hi Bud,

>> Looks like you'll need to re-publish, but please name the repaired
>> formula as an alternate (*a, *1, or something) to spare those who
>> got  sucker-punched along with you.

  I won't need to re-publish, gravijul-v3 works fine.  The bug appears on=
ly
if z is initialized to 0.

>> Question to the Fractint gods: could you please document the  problem
>> so that we can reconstruct the error to preserve the old formulas
>> after the fix is implemented?

  Try the following formula:

MandelMaxm { ; generalized z^n by Bud 3/27/98
; probably been done before...
; defaults: p1 =3D (2,0) p2 =3D (0,0) p3 =3D (4,0)
  if (p1 =3D=3D 2)
    z =3D p2
  else
    if (p2 || flip(p2))
      z =3D p2
    else
      z =3D 1
    endif
  endif
  c =3D pixel:
   z =3D z^p1 + c
    |z| < p3
  }

        - Sylvie

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

Date: Sun, 29 Mar 1998 03:03:52 -0500
From: Theran Cochran <[e-mail]>
Subject: Re: (fractint) Xfract rpms

> From: Rich Thomson <[e-mail]>
> Subject: Re: (fractint) Xfract rpms
>
> In article <[e-mail]> ,
>     Felix <[e-mail]>  writes:
> > Where can I get the latest XFractint RPM?
>
> Well maybe if you explained what an "RPM" is someone might be able to
> answer your question.  You can download xfractint source code from
> <http://spanky.triumf.ca>

RPM stands for Redhat Package somethingorother (Module?). It is a way to
distribute and install software used on Linux systems, most notably the
Redhat distribution of Linux. I use Debian myself, which has its own
format in additon to RPM.

So basically, he is asking for the compiled binaries for XFractint ready
to install.

Anyhow, I say that he should just get the source and compile it using
make.

I've been thinking of getting xfractint myself and adding some PNG
support with PNGLIB. PNG is #1 on my wish list for fractint. It gives
better compression (sure, not always by much, but sometimes a whole
lot), doesn't have all those patent troubles, it could do 16 bit
fractals without another file format, most good paint programs can read
it by now, POV-Ray supports it, and it has a nice sounding name. But I
digress...


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

Date: Sun, 29 Mar 1998 10:28:03 -0500
From: "Jason Hine" <[e-mail]>
Subject: Re: (fractint) how 'bout a deep-zoom contest

Peter comments:
>informal sounds great. i wld be willing to maintain the current deepest
>zoom images on my geocities page and provide info, which I and hopefully
>others, wld contribute, on why such and such an image is interesting, or
>how Fractint does what it does and how it might do it better, sort of like
>the Deep Zooming page at Spanky.

Sounds great to me... I'm less interested in seeing a contest happen as I am in
seeing interest generated for exploration of the depths of the Mset.

Laters, Jason


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

Date: Sun, 29 Mar 1998 07:46:11 -0800
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) formula trouble, pars

At 07:17 AM 3/29/98 -0500, Sylvie wrote:
>  Try the following formula:
>
>MandelMaxm { ; generalized z^n by Bud 3/27/98
>; probably been done before...
>; defaults: p1 = (2,0) p2 = (0,0) p3 = (4,0)

(new section)
>  if (p1 == 2)
>    z = p2
>  else
>    if (p2 || flip(p2))
>      z = p2
>    else
>      z = 1
>    endif
>  endif
(end new section)

>  c = pixel:
>   z = z^p1 + c
>    |z| < p3
>  }

Impressive!  How did you figure *that* out?  Have you wrestled
that bear before?


Bud


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

Date: Sun, 29 Mar 1998 10:53:08 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: (fractint) sci.fractals

Just curious: there is talk on sci.fractals of moderating that list (the
guy who wrote the FAQ has offered to do it but wants two co-moderators)
because of the insane SPAM. Wld people be more likely to post? Or wld it
just kill the list for good? Does anyone care?


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

Date: Sun, 29 Mar 1998 10:22:13
From: "Lavondyss" <[e-mail]>
Subject: Re: (fractint) par archive (was: gravijul)

On Sun, 29 Mar 1998 11:44:29 +0100,
[e-mail] wrote...
>
>Lav,
>
>>Thanx Les!! That saved me a TON of time.<
>
>
>You're welcome!
>
>BTW, a useful search word for dragging pars out of the Fractint archive is
>"reset="
>This takes you nicely from par to par.
>
>cheers, Les
>
>
Sounds cool. I'll try that next time.




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

Date: Sun, 29 Mar 1998 12:53:32 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) formula trouble

Mark Christenson wrote:
>
> I have been playing around with another flexible formula, and have
> encountered a problem.  This works fine for the z^2 case, but breaks
> down; try p1=3, 4, etc. to see what I mean.
>
> Another question/observation: the imaginary component of "bailout"
> has no effect (not that I would expect any for a magnitude comparison) (?)
>
> Bud
>
> MandelMax { ; generalized z^n by Bud 3/27/98
> ; probably been done before...
> ; defaults: p1 = (2,0) p2 = (0,0) p3 = (4,0)
>    z = p2, c = pixel:
>
>    z = z^p1 + c
>     |z| < p3
>   }

I thought this kind of thing was already covered in the "manzpower" built-in
formula.  Why write another one?  No insult/malevolence intended.
Nevertheless, a bug's a bug.

Justin K.
- --
I sense a great disturbance in the Source.
Justin A. Kolodziej
I am [e-mail]
Marquette University is http://www.mu.edu

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

Date: Sun, 29 Mar 1998 11:45:43 -0800
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) formula trouble

At 12:53 PM 3/29/98 -0600, Justin wrote:
>I thought this kind of thing was already covered in the "manzpower" built-in
>formula.  Why write another one?

Thanks.  And with the different bailout options, it's even more fun!


Bud


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

Date: Sun, 29 Mar 1998 15:10:31 -0500
From: Sylvie Gallet <[e-mail]>
Subject: Re: (fractint) formula trouble, pars

>> Impressive!  How did you figure *that* out?  Have you wrestled that
>> bear before?

  I was suspecting a problem with the initial value of z and I tried
various non-zero values for p2.  In fact, the original formula works fine=

only when p1 =3D=3D (2,0) i.e. when the fast parser optimizer uses LodSqr=

instead of LodRealPwr.

  BTW, the first test should be:
  if (p1 =3D=3D 2 && flip(p1) =3D=3D 0)

        - Sylvie

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

Date: Sun, 29 Mar 1998 21:22:14 +0100
From: Michael Bell <[e-mail]>
Subject: Re: (fractint) how 'bout a deep-zoom contest

Jason Hine wrote:
>
> I like this idea very much.  There needs to be some artistic-ness involved to
> keep the contest from just being a technology contest.... and yeah, images
> should probably be sent as GIFs.  Other thoughts:  use a standard image
> resolution and colormap?  For those who don't know, I've got a little hiccup of
> a program called Deeper available at my website that does a good job of zooming
> deeply quickly, without losing sight of areas with mini-Msets in it.  Deeper can
> be found at < http://boralf.agsci.colostate.edu/~jason >... let's do this
> contest!
>
> Cheers, Jason

Interesting program - I got to 55 digits precision in 3 or 4 hours.
I think that producing some deepzoomed images of the M-set could be
nice,
but I agree that it shouldn't be just "whoever has the most processing
power wins".

Michael.

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

Date: Sun, 29 Mar 1998 15:52:20 -0500
From: davides <[e-mail]>
Subject: Re: (fractint) sci.fractals

At 10:53 AM 3/29/98 -0800, you wrote:
>Just curious: there is talk on sci.fractals of moderating that list (the
>guy who wrote the FAQ has offered to do it but wants two co-moderators)
>because of the insane SPAM. Wld people be more likely to post? Or wld it
>just kill the list for good? Does anyone care?

I used to check in on that group every once in a while, and it used to be
very interesting. The spam business....yeah, I care.
[e-mail]
Back up my hard drive?
How do I put it in reverse?

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

Date: Sun, 29 Mar 1998 14:07:58 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

Hi guys,
I read sci.fractals regularly but I'll not post there until the SPAM
issue is really solved. And I mean the SPAM email. I used to
post there a lot. It is where in the good old days one could run
something like the Grand Internet Parallel Processing Project.
The closest things to that now is GIMPS (looking for new largest
prime numbers) which are run from lists. When I see a question
posted that I can help with I reply to the author. I consider this
email list the replacement of sci.fractals. If we can keep posts
on topic it will not go the way of sci.fractals.

About a deep zoom contest and raw processing power. The
current record holder is a midget on the spike. There is nothing
imaginative about that. These midgets are sitting ducks, easy
to get to compared to others off the real line. This is because the
contours practically aim right at them.

I posted a deep zoom several years ago (before Fractint had deep
zoom) on the filament in the upper left of the 3-bud. It took special
methods to find. Even though it was a 'shallow' zoom, 10 ^ 40 something,
it was interesting and at least one person asked if he could post
it on his page.  It and other midgets on the 'thin' filaments are the
easiest to compute since the iteration counts are lowest near the
outer edges of M. And if you choose the 'correct' sequence of
branches at the Misiurewicz points you can get some nice branching
symmetries.

The really pretty filament patterns occur in closer where iteration
counts are much too high for deep zooming. If you want 10^1000
magnification down in seahorse cajon, you would have to zoom
very near the tip of one of the structures.  Midget/filament images
at the tips tend to have a certain look to them - very radial patterns.
Anything else will require high resolution images with very high
iteration counts. These take a long time to compute and have multiple
wraps of the limited color palette. To avoid these two problems
requires new formula and advanced coloring methods. Unfortunately,
arbitrary precision arithmetic is only available for the standard MSet
formula.

But then again, I could be surprised.

For those of you who like to search for midgets in the shallower
zooms (near the limits of float), I have posted thousands of them
(pars only) on my web site. These are useful for admiring the variety
of filament patterns and saving some time getting to them.

Jay
http://home.san.rr.com/jayrhill/MSet/Midget.html


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

Date: Sun, 29 Mar 1998 23:44:54 +0100
From: Ray Girvan <[e-mail]>
Subject: (fractint) Secant ye shall find...

This probably isn't new, but here are a few PARs based on the secant
method (in this case, for finding the roots of z^5-1=0).  These ideas
were inspired by discussion with Yoshitoshi Araki, who has done some
very nice C++ coded Newton and Halley's method fractals (see
http://www.sf.airnet.ne.jp/josh) and has just moved to Fractint.

As the secant method requires two seed values, there's great scope
for modifying the shape and texture via the input seeds: vanilla
Newtons; Newton 'islands'; complex curling webs; and spiky biomorphs.
 To give extra variables to tweak, I've also added a relaxation
factor (as in Chris Green's Newton work) and a mid-iteration function

Ray

=== SECANT.PAR === cut here ===========
frm:SECANT1{; Ray Girvan, March 1998
    ; secant method for roots of f(z)=0
    ; z^5-1=0
    ; z_n+1 = z_n - f(z_n)*(z_n - z_n-1)/(f(z_n) - f(z_n-1))
    ; needs two seed values z0, z1
    ; Newton-like images, perturbed by choice of z1,
    ; a relaxation factor p2, and a function fn2
    ; inside the iteration loop
   z=pixel, z0=(0,0), z1=fn1(z)+p1:
   f0=z0*z0*z0*z0*z0-1
   f1=z1*z1*z1*z1*z1-1
   z=z-p2*f1*(z1-z0)/(f1-f0);
   z0=z1;
   z1=fn2(z),
   |f1| >= 0.0001
}

Copper_rose        {
  reset=1960 type=formula formulafile=secant.frm formulaname=SECANT1
  function=ident/ident center-mag=3.665e-006/-8.65e-007/0.3333176
  params=0/0/1.1/0 float=y periodicity=0
  colors=000fQF<10>xlc<11>DA9976543000333<14>zqk<14>t_LsYJsYJ<13>gN8fM7gN9\
  <13>vj`xlcxkb<13>rVEqTCpTC<13>_L8YK7YK7<14>MB4<14>sdVvgXvfW<13>pTBoR9nR9\
  <14>ZG5YG5XF5WF5VE5<11>G63<14>q_OtbQtbP<13>kPAjO8jO8<13>_H6ZG5_I7<2>dOD
  }

Jungle1            {
  reset=1960 type=formula formulafile=secant.frm formulaname=secant1
  function=sin/ident center-mag=3.665e-006/-8.65e-007/0.3333176
  params=0/0/1.2/0.5 float=y maxiter=500 logmap=9 periodicity=0
  colors=000WPS<5>gtdjzgnzk<2>zzz<16>OAM<12>ziFwgFtdF<17>TGEREDPEC<4>DA2<9\
  >OJ5PJ6SL6<10>zmB<22>zz0zz0zy0<60>YKCXJDVRQ<5>AAK<4>AOSARUBUWBXYB__Bba<5\
  >Dtn<6>8Xc7Ta9Q`<5>L4R<8>VHI<7>zH0<7>WEDSDFRAG<2>N3JL0KL1K<2>O4J<2>UKP
  }

Goldpod1           {
  reset=1960 type=formula formulafile=secant.frm formulaname=secant1
  function=ident/ident
  center-mag=0.578974/-0.625183/9.037333/1/109.999 params=1/1/1.1/0
  float=y maxiter=500 logmap=9 periodicity=0
  colors=000A70<24>we0zg0zg0<21>zy0zz0zz0zz0<117>zz0tt0<29>ba0a`0ba3<17>xx\
  vzzzzxx<24>z88BBBEEE210<2>850
  }

Parasite1          {
  reset=1960 type=formula formulafile=secant.frm formulaname=SECANT1
  function=ident/cos center-mag=46.0996/44.4439/0.1671698/1/69.999
  params=0/0/1.1/0 float=y periodicity=0
  colors=avo<2>zzz<2>zzz<5>SeX<10>DF3CD0DE0<8>QP5RQ5RQ5<2>TR5US6US6UT6<27>\
  Xb6Xb6Yc5Yd5<9>Xr9WtAXr9<6>_qR`qT`rWarZar`<2>hsngrkeqhcpe<3>bl`ajZajY<20\
  >W_HV_GVZFUZEUYD<7>OR6OQ5NP4NO3MN2<2>KL0KL0KM1<44>_jV`kW`kW`kX<40>bwpbwp\
  awp<13>Uul
  }

Parasite2          {
  reset=1960 type=formula formulafile=secant.par formulaname=secant1
  function=ident/sinh center-mag=-3.90084/-0.735131/30.20465
  params=5/1/1/0 float=y logmap=5 periodicity=0
  colors=E49sVi<2>zap<9>VGNSELPCIL9FI7CE49<4>H6CI6CJ7DK8E<8>TFMVGNVGN<29>s\
  eltfmtgmthn<13>zzzVGN<13>eRYfSZeRY<14>E49<15>zzz<14>uhntfmtfm<21>aNU`MT`\
  MT`MT<39>H6BG5AH6B<8>RDKSELSEL<6>QAKQ9KQ9KQ9K<3>UBNUBOWCP<10>qTg
  }

Nucleus1           {
  reset=1960 type=formula formulafile=secant.frm formulaname=SECANT1
  function=sqr/ident center-mag=-0.867226/0.367994/0.2628626/1/29.999
  params=0/0/1/0.5 float=y periodicity=0
  colors=vqleZR<6>_TLZSK_TL<14>vql<15>000<14>IC5KD6KD6<21>cXPdYQdYQdYQ<39>\
  toiupjtoi<8>mf_leZleZ<6>pf`qf`qf`qf`<3>ocXobXnaV<10>YJ9WH7UF5SD3PA0<9>jc\
  WleZnhaqkesnhvql<4>tnitnhsmgrlf<8>kdYjcWjcW<29>LE7KD6JD6IC6<13>000jcW<5>\
  f_S
  }

Dipole1            {
  reset=1960 type=formula formulafile=secant.par formulaname=secant1
  function=recip/ident center-mag=2.48867/5.98404/0.03598946
  params=0/0.1/1/-0.8 float=y maxiter=500 periodicity=0
  colors=000BDO8CK134000<15>vcsvcsvcsvcs<13>MHUJFSIJQ<5>AbE<7>Px5<5>8f95cA\
  5`B<6>BLKCIMEKO<3>QUWSXYVZ_Y``<6>run<15>I5O<5>VHbYJe_LgaNi<6>paz<4>dWjaV\
  gZTcWS`URY<6>AKA<4>OSARUAUWBXYB__BbaB<5>tnD<6>Xc8Ta7Q`9<5>4RL<7>FJUHIVHG\
  Z<6>H0z<8>DFS<4>0KL<3>4JO<12>z0z<7>`9`YAYVBX<6>AJKAKMAMO<12>iFz<11>EDR
  }
=== cut here ====================

Ray
[e-mail] +++ Technical Author +++ Topsham, Devon, UK
http://www.users.zetnet.co.uk/rgirvan/ +++ The Apothecary's Drawer



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Date: Sun, 29 Mar 1998 17:12:54 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

Jay wrote:

> Unfortunately,
> arbitrary precision arithmetic is only available for the standard MSet
> formula.

What other formulas would you like to see ported to arbitrary
precision? I'm not offerring to do do a whole lot of formulas, but if
there are any particular formas already in Fractint that you would
like extended to arbnitrary precision, let me know. So far no one has
asked <g!>

Tim


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Date: Sun, 29 Mar 1998 18:37:34 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

At 05:12 PM 3/29/98 -0600, you wrote:
Tim,

> I'm not offerring to do do a whole lot of formulas, but if
>there are any particular formas already in Fractint that you would
>like extended to arbnitrary precision, let me know.

Magnet1M and 2M


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Date: Sun, 29 Mar 1998 17:36:34 -0500
From: "Jason Hine" <[e-mail]>
Subject: Re: (fractint) sci.fractals

Davides replied:
>I used to check in on that group every once in a while, and it used to be
>very interesting. The spam business....yeah, I care.

Same goes for me, exactly.
Jason


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Date: Sun, 29 Mar 1998 17:45:36 -0500
From: "Jason Hine" <[e-mail]>
Subject: Re: (fractint) Your Midgets

For interesting midgets, Jay suggests checking out:
>Jay
>http://home.san.rr.com/jayrhill/MSet/Midget.html

Jay, I liked that page, and am wondering how you managed to scale and rotate
each mini-Mset to match the original set.  Did you do it by hand/eye, or do you
have another method?  I'd like to know because I'fe been wanting to try some
image algebra (adding or subtracting the pixel values of two images) on two
images of mini-Msets, and would need to get them aligned and scaled to the same
orientation and size in order to do this....
Laters, Jason


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Date: Sun, 29 Mar 1998 19:49:19 -0500
From: davides <[e-mail]>
Subject: (fractint) gjdes3/gjdes4

Greetings,

When this frm was first posted to the list, along with the various changes,
I could only file this in a vague "when I get to it" file. Having finally
taken time to "get to it", I think I see the attraction. The first two pars
I posted with this frm were very similar. These two are also similar to
each other, difference being in the color maps. One is one of mine (same as
on the first two), the other is as noted "Jacco213".
Mr. Christenson's gravijul is quite remarkable, IMO. And there are
variations of it yet to go through????
Not to worry, I will not be posting all of the pars/maps, just every once
in a while - maybe. If I ever get anymore time...



frm:gravijul { ; r^(-2) Mark 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
 }

gjdes3             { ; Mark Christenson's formula
                     ; David Shanholtzer, 1998
                     ; color map: dav25b
                     ; cycle
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gravijul function=tan/cotan/sin passes=t
  center-mag=-8.62367e-005/0.434919/8.377706/1.1863
  params=9/0/2.1/0/1.9/0 float=y maxiter=1000 inside=zmag outside=atan
  potential=255/255/2000 decomp=256 finattract=y
  colors=000<70>000E0G<13>lLq<30>G1IE0GF0G<30>lBh000<63>000K00<38>v54
  }





gjdes4             { ; Mark Christenson's formula
                     ; David Shanholtzer, 1998
                     ; jacco213
                     ;
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gravijul function=tan/cotan/sin passes=t
  center-mag=-8.62367e-005/0.438343/8.690566/1.1863
  params=9/0/2.1/0/1.9/0 float=y maxiter=1000 inside=zmag outside=atan
  potential=255/255/2000 decomp=256 finattract=y
  colors=kTI000<29>DWbEYdDWb<20>122000000<27>D00D00E01E02<21>M2BN3CM3C<2>K\
  3B<6>cLG000kkknWJ<3>zjR<3>nXLjTJfRJ<8>D3C<36>K8RK8RK8RK8RJ7R<22>E1RD0SE1\
  S<14>UQcVRcURb<28>112
  }
[e-mail]
Back up my hard drive?
How do I put it in reverse?

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Date: Sun, 29 Mar 1998 19:53:28 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) sci.fractals,

Jay wrote:

> Unfortunately, =

> arbitrary precision arithmetic is only available for the standard MSet =

> formula. =


Actually, arbitrary precision is already implemented for four types: =

Mandelbrot, Julia, Manzpower and Julzpower. (Extremely slow for those las=
t =

two types!)

Lee Skinner

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Date: Sun, 29 Mar 1998 19:41:29 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

Tim Wegner wrote:
>
> Jay wrote:
>
> > Unfortunately,
> > arbitrary precision arithmetic is only available for the standard MSet
> > formula.
>
> What other formulas would you like to see ported to arbitrary
> precision? I'm not offerring to do do a whole lot of formulas, but if
> there are any particular formas already in Fractint that you would
> like extended to arbnitrary precision, let me know. So far no one has
> asked <g!>

What it sounds like we're asking for, actually, is an arbitrary-precision
formula parser.  Then we wouldn't need particular formulas ported to arbitrary
precision, we would just re-write them (assuming that we find a need for
deep-zooming).

Actually, how many .pars do you see that are from built-in types anyway? ;-)

Justin K.
- --
I sense a great disturbance in the Source.
Justin A. Kolodziej
I am [e-mail]
Marquette University is http://www.mu.edu

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Date: Sun, 29 Mar 1998 20:47:32 -0500
From: "Peter Gavin" <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

Exactly why a C++ class would be great to have... I found a couple, one if
which uses Number Theoretic Transforms and is very fast... I have yet to
fully understand how it works...  But I don't think it would be hard to port
anything to use it, since it works (for the most part) like a regular double
or whatever.

Pete

|What it sounds like we're asking for, actually, is an arbitrary-precision
|formula parser.  Then we wouldn't need particular formulas ported to
arbitrary
|precision, we would just re-write them (assuming that we find a need for
|deep-zooming).



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Date: Sun, 29 Mar 1998 19:39:58 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) Your Midgets

Hi Jason,

> For interesting midgets, Jay suggests checking out:
> >Jay
> >http://home.san.rr.com/jayrhill/MSet/Midget.html
>
> Jay, I liked that page, and am wondering how you managed to scale and rotate
> each mini-Mset to match the original set.  Did you do it by hand/eye, or do
you
> have another method?

I used a special C++ program to compute the size and rotation, it was part of
my
area of the MSet project.

> I'd like to know because I'fe been wanting to try some
> image algebra (adding or subtracting the pixel values of two images) on two
> images of mini-Msets, and would need to get them aligned and scaled to the
same
> orientation and size in order to do this....
> Laters, Jason

An interesting idea. I have not had any luck using the pixel variable in
Fractint to do this. I once asked what the units of this variable are, but
it still is a mystery. Consider the simplest task, merging the regular MSet
with the largest midget for which we have exact values for their bases:
+.25 and -1.75.  Now a shift of one by 2 units should line up the bases.

But look at this

frm:classic-shift (XAXIS){ ; Jay Hill, 1998
continue = 1,
z = 0,
zc = c = pixel+.25 + ((pixel-p1)*p2) *whitesq
   :
if (|zc| > 40)
    continue = 0
else
    zc = sqr(zc) + c
endif
continue == 1
}

classic_shift   { ; Jay Hill, 1998
  reset=1960 type=formula formulafile=color101.par
  formulaname=classic-shift passes=1 center-mag=0/0/10 params=2/0/1/0
  float=y maxiter=256 inside=0 outside=summ periodicity=0 symmetry=xaxis
  colors=000<14>S9w<15>wJTzKU<30>21100\
  0000<14>000010030<29>0z0<30>02000000\
  0<14>000110330<29>zz0<30>220000000<29>000
  }

The whitesq variable is supposed to be 0 or 1, but it seems to be actually
some screwball scaling factor also. The size and shift of the second image
is incorrect. If I try to scale one, like you say, so that the bases line up
AND
the size of the midget is the same as the cardioid, it never happens.

It seems to me we should put p1=shift and p2=scale and get overlap. It fails.

Another question, while I'm at it. I asked before and I thought I understood
someone's answer, but why will the xaxis symmetry not work in the frm?
I can only get symmetry when I put the command in the par. This must be a bug!

Jay



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Date: Sun, 29 Mar 1998 22:31:55 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) sci.fractals, deep zoom contest....

Justin wrote:

> What it sounds like we're asking for, actually, is an arbitrary-precision
> formula parser.  Then we wouldn't need particular formulas ported to arbitrary
> precision, we would just re-write them (assuming that we find a need for
> deep-zooming).

Unfortunately, that's much harder <grin!>

Tim




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Date: Mon, 30 Mar 1998 17:42:08 +1200
From: "Morgan L. Owens" <[e-mail]>
Subject: Re: (fractint) Your Midgets

At 19:39 29/03/98 -0800, Jay Hill wrote:
>
>Another question, while I'm at it. I asked before and I thought I understood
>someone's answer, but why will the xaxis symmetry not work in the frm?
>I can only get symmetry when I put the command in the par. This must be a
bug!
>
I think it's 'cos you have "outside=summ" in the par. Fractint ignores
those symmetry conditions when the outside is coloured anything other than
"<nnn>" or "iter" even in the case of the built-in bog-standard Mandel
(which to look at also shows _why_ it's ignored.)

Morgan



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Date: Mon, 30 Mar 1998 09:19:25 +0100
From: Edward Avis <[e-mail]>
Subject: (fractint) xfractint for Alpha

>>> Where can I get xfractint precompiled for DEC Alpha?
>
>AFAIK there aren't any precompiled xfractint's around.  Just download the source and compile it.

I've tried that and couldn't get it to work (Digital Unix).  I'll go away and try again...

- --
Ed Avis
[e-mail]
http://members.tripod.com/~mave/index.html



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Date: Mon, 30 Mar 1998 00:39:11 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) Your Midgets

Hi Jason,

I figured it out.  The difference between working and not working code
is sometimes only a few characters.  :-)  Using this image, you can
sure see the distortion of one midget vs. the main cardioid.

frm:classic_shift { ; Jay Hill, 1998
; shift one midget over another, merge images
; p1 = shift of first midget
; p2 = scaling factor of first midget relative to second
; p3 = shift of second midget
; use  outside=summ periodicity=0 passes=1float=y
continue = 1,
z = 0,
zc = c = (pixel+p3)*(1-whitesq) + (pixel/p2+p1) *whitesq
   :
if (|zc| > 40)
    continue = 0
else
    zc = sqr(zc) + c
endif
continue == 1
}

classic_shift3    { ; Jay Hill, 1998
  reset=1960 type=formula formulafile=*.par
  formulaname=classic_shift passes=1
  center-mag=-0.935178/6.66134e-016/1 params=-1.75/0/54/0/0.25/0
  float=y maxiter=256 inside=0 outside=summ symmetry=xaxis
  periodicity=0 savename=shift-3
  colors=000<14>S9w<15>wJTzKU<13>ZBHXB\
  GXBG<45>1S10T00V0<15>0z0<13>0Z00X00X\
  0<45>SU0TT0VV0<15>zz0<30>220000000<29>000
  }

> > For interesting midgets, Jay suggests checking out:
> > >Jay
> > >http://home.san.rr.com/jayrhill/MSet/Midget.html
> >
> > Jay, I liked that page, and am wondering how you managed to scale and
rotate
> > each mini-Mset to match the original set.  Did you do it by hand/eye, or do
> you have another method?
>
> I used a special C++ program to compute the size and rotation, it was part of
> my area of the MSet project.
>
> > I'd like to know because I'fe been wanting to try some
> > image algebra (adding or subtracting the pixel values of two images) on two
> > images of mini-Msets, and would need to get them aligned and scaled to the
> > same orientation and size in order to do this....
> > Laters, Jason
>
> An interesting idea. I have not had any luck using the pixel variable in
> Fractint to do this. I once asked what the units of this variable are, but
> it still is a mystery. Consider the simplest task, merging the regular MSet
> with the largest midget for which we have exact values for their bases:
> +.25 and -1.75.  Now a shift of one by 2 units should line up the bases.
  and a suitable scaling lines up one other feature.

[screwups deleted]

Jay


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End of fractint-digest V1 #148
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