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fractint-digest          Monday, May 11 1998          Volume 01 : Number 195




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

Date: Sun, 10 May 1998 20:40:43 +0100
From: "Geoff Stanton" <[e-mail]>
Subject: Re: (fractint) nova frms

> Geoff...
>
> I have a link to the formulas off my homepage....in the "With Expert
Assistance"
> section
>
Thanks. Just what I needed.
Geoff

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

Date: Sun, 10 May 1998 17:42:35 -0400 (EDT)
From: [e-mail]
Subject: Re: (fractint) Octet Minibrot

Hmm...I noticed in both of these pars (the ones Angela and Sylvie posted)
that the colors part was about twice as long as it was in the original
par I posted.  Does that mean you were using a higher resolution with
more colors?  I've been trying to set fractint at *anything* higher than
640x480 256 colors, but I either get a very flickery screen or fractint
says 'that mode is not recognized by your video card'.  Now, under
Windows NT I can display at 1024x768 with 65536 colors, with NO flicker,
so why won't fractint display at that resolution?  Does anyone know how
to get rid of the flicker?

- --Cliff
  http://www.people.cornell.edu/pages/cjc26/

  civil rights are not special rights



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Date: Sun, 10 May 1998 17:46:41 -0400 (EDT)
From: [e-mail]
Subject: (fractint) Deep zooming

I've been playing around with making really deep zooms (~1e10
magnification, about a million or so iterations) of the Mandelbrot set.
Here's some nice images I found.  (I learned how to use the palette
editor today so all the color maps are my own.:)

DeepSpiral         { ; Cliff Crawford 1998
  reset=1960 type=mandel
  center-mag=-0.50875428780802620/+0.52145166417949960/4.388083e+010
  params=0/0 float=y maxiter=500000 inside=0 logmap=12070
  colors=000z00<14>ZZZccc<7>zzz<6>00z<15>zz0<15>z00<15>00z<15>0zm<30>J2LK0\
  KK1K<30>0zm<15>0Mc<15>zzz<30>zd2zc0zd0<14>zz0<14>z40
  }

DeepMini           { ; Cliff Crawford 1998
  reset=1960 type=mandel
  center-mag=-1.55536216159586300/+0.00000944894898022/1.311388e+012/1.000\
  1/15.001/-0.007 params=0/0 float=y maxiter=2000000 inside=0
  logmap=45495
  colors=00000e<86>zzx<12>OzyLzzKzz<11>5zz3zz2zz0zz0zz<103>00600`<28>00`00\
  a00c
  }

- --Cliff
  http://www.people.cornell.edu/pages/cjc26/

  civil rights are not special rights


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Date: Sun, 10 May 1998 18:22:46 -0400
From: davides <[e-mail]>
Subject: Re: (fractint) Among the Stars website

At 02:35 PM 5/10/1998 -0500, you wrote:
>Finally, after months of work putting together first the show, and then =
the
>website, I invite you to visit the "Among the Stars" website which
documents a
>project whereby I was able to combine two of my passions =97 fractals an=
d
ballet.
>
>http://www.ParkeNet.org/jp/amongstars.html

(snipped)

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

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Date: Sun, 10 May 1998 18:53:43 -0400
From: Lee Skinner <[e-mail]>
Subject: (fractint) Carlson formu

Hi wiz,

>>
wiz_spiralvalley   { ; AVW 5/9/98 new color map flx-blk2.map
                     ; from a Paul Carlson formula
  reset=3D1960 type=3Dformula formulafile=3Dmay98.frm
  formulaname=3Dspir_stalks_jul
  corners=3D-0.53691921/-0.479572948/0.802008049/0.780418614/-0.505911627=
/0.\
  760664605 params=3D-0.36665/0.11573/0.02/0/8/30 float=3Dy maxiter=3D251=

  inside=3D253 outside=3Dsumm
  colors=3D000zzc<28>cKA000<28>0000wz<27>03C00A000<28>000fOz<28>K0F000<28=
>00\
  0KKU<26>333222111000000<42>000
  }
<<

>>There......colors!!!

Very nice!  Here is what I came up with while waiting for your map:

wzlspvl            { ;                            =

  colors=3D000<14>z00<13>FB3<5>GN3HP3HR3IU3IU3<13>Oa0<11>OE4NB5PC6<18>xw6=
zz5\
  zx5<14>zH5zE6xE6<12>RB6OB6LA5J94H84F73000000<3>C04F05H15K25<8>gD1jF0kK6=
<\
  7>zzs<7>fV7cQ0`O0<2>SI0<6>P60<2>G00<4>0Qc<6>8bcAdcDed<11>tupxwrzyt<7>yl=
D\
  xj2wiK<3>vc4ua0ub3<3>vhJviNvjPwkR<7>zwu<13>wCM<5>0bzN97H84
  }

Lee

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

Date: Sun, 10 May 1998 18:12:03 -0600
From: "Tim Wegner" <[e-mail]>
Subject: (fractint) periodicity=nnn on menu

Would folks like to see the commandline control periodicity=nnn
promoted to menu status?

It would be OK with me if this were a permanent fixture. However,
periodicity could easy change. Maybe I could make a "top secret
developer's menu page" that is sort of the analogy of the "top secret
developer's <tab> status screen". The idea is that the menu would be
for convenience, but we wouldn't promise to keep the commands or
their syntax the same from version to version.

To play devil's advocate, why would you want periodicity=nnn in a
menu since entering it via the <G> command is so easy?

Tim


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

Date: Sun, 10 May 1998 19:28:21 -0400
From: Jack Valero <[e-mail]>
Subject: Re: (fractint) Among the Stars website

At 02:35 PM 10/05/98 -0500, you wrote:
<snip>
>...I invite you to visit the "Among the Stars" website which documents a
>project whereby I was able to combine two of my passions =97 fractals and
ballet.
>
>http://www.ParkeNet.org/jp/amongstars.html
>... I hope you'll take the time to visit and to let
>me know what you think.
>
>Janet Preslar
<snip>

I can best express my admiration by saying only that I felt
*good* while viewing this site. Congratulations on a labour
of obvious love. It's a good thing I had no idea you were
working on this or I would have become too impatient to
see the results...


Regards - Jack

visit our fractal gallery: http://www.globalserve.net/~jval/phractal.html

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

Date: Sun, 10 May 1998 18:34:26 -0500
From: Janet Preslar <[e-mail]>
Subject: Re: (fractint) Among the Stars website

Jack =97

Thanks for the nice comments. I have to agree that it was a labor of love=
 and I
really had to remind myself of that as I encountered all sorts of obstacl=
es
along the way! But in the end the performance surpassed my expectations a=
nd
contributed a little beauty to this world. That's what counts!

Janet


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

Date: Sun, 10 May 1998 17:26:07 -0700
From: "Angela Wilczynski" <[e-mail]>
Subject: Re: (fractint) Octet Minibrot

Cliff...

256 colors is the max for fractint. I used one of the color maps available at

http://wizzle.simplenet.com/fractals/hints/graphic_hints.htm

Lots of people contributed color maps in both map format (zipped) and par
format. You can download a few and maybe play around a bit to see how they work
on your own images.

Angela



[e-mail] wrote:
>
> Hmm...I noticed in both of these pars (the ones Angela and Sylvie posted)
> that the colors part was about twice as long as it was in the original
> par I posted.  Does that mean you were using a higher resolution with
> more colors?
>
> --Cliff
>   http://www.people.cornell.edu/pages/cjc26/
>
>   civil rights are not special rights
>

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

Date: Sun, 10 May 1998 21:27:16 -0400
From: Gedeon Peteri <[e-mail]>
Subject: Re: (fractint) Among the Stars website

Janet,

I greatly enjoyed visiting this beautiful site. Being on this list, I
naturally valued the fractals, but I was very much impressed with the great
photography too. This site is an interesting combination of three art forms.

Gedeon


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

Date: Sun, 10 May 1998 21:41:30 -0400 (EDT)
From: [e-mail]
Subject: Re: (fractint) periodicity=nnn on menu

On Sun, 10 May 1998, Tim Wegner wrote:

> To play devil's advocate, why would you want periodicity=nnn in a
> menu since entering it via the <G> command is so easy?

Because not all of us newbies know about the <G> command.  In fact, this
newbie doesn't even know what 'periodicity=nnn' does in the first place :)

- --Cliff
  http://www.people.cornell.edu/pages/cjc26/

  civil rights are not special rights

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

Date: Sun, 10 May 1998 22:04:04 -0400 (EDT)
From: [e-mail] (Kragen)
Subject: Re: (fractint) Got a new printer

On Sat, 25 Apr 1998, Earl Simpson wrote:
> The only way to go is Epson Stylus 800 color printer.
> Resolution varies from 180x180 dpi to 1440 x 720 dpi (the highest available
> on any printer)

Well, this is technically not quite true.  There are color printing
machines (usually used in publishing houses) that can do 2100 x 2100
dpi, but they cost tens of thousands of dollars.  And Intel has some
machines that can print 75,000 x 75,000 dpi or so, but they generally
don't print in color.  They use them to make Pentiums, among other
things.

:)

Kragen


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Date: Sun, 10 May 1998 22:47:57 -0400 (EDT)
From: [e-mail] (Kragen)
Subject: RE: (fractint) Anyone porting...

On Sat, 2 May 1998, Turner W. Rentz, III wrote:
> A sad footnote here is that the post to the list, is C++ source code
> for a new fractint program ; not one person responded to that -

There are appropriate places to put a megabyte of C++ for a new
fractint.  Mailing lists are not among them.

There are appropriate places to announce having put such things on a
web site.  The fractint-devel list (isn't that what it's called?) is
one of them.  The fractint list is moderately appropriate.

> I have chosen you essentially at random; if you know of anyone
> who sees the computer source code as something other than
> "spam" please let me know; we might can work together to get
> this code written.

When you say `chosen you essentially at random', who are you referring
to?  The mailing list to which you sent the half-hearted apology I'm
responding to?

> I believe the stone soup group still exists somewhere...

Yes.

Kragen


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Date: Sun, 10 May 1998 22:48:14, -0500
From: [e-mail] (MR CHARLES F CROCKER)
Subject: (fractint) Ver 20 additions

Hi All

I don't know how close Ver 20 is and I wouldn't want to make any changes
that would slow it down. I have had a few words with Tim about a couple of
changes that make sense to me. Let's see if I am a minority of one in these
areas. Quotes are from Tim.

>To play devil's advocate, why would you want periodicity=nnn in a
>menu since entering it via the <G> command is so easy?

I wouldn't mind what menu it might appear on or leave it still to the <g>
command if the default were none. Entry from the <g> command doesn't stick.
Don't all inside coloring methods really depend on the itteration being run
to the limit? Prematurely pulling out would leave the exit data depending
on the periodicity function. Except for pictures with large high count
areas the time saved wouldn't be much, particularly where processor speeds
are getting so high. Even my P90 is 4000 times as fast as the system I
started with 12 years ago.

>Our reasoning (2which may not suit everyone) is that viewwindows
>parameters are similar to video modes (maybe part of the "video
>mode"). They are likely to be relative to a user's  setup, so they
>are not written to PAR files.

I have noticed a few that use viewwindow for specil effects. My view has
been that the default mode is great for previewing a slow scan, but of
little utility beyond that. It's a sticky command that has to be explicity
revoked. When it has been set it is written into a par file and included
with the saved gif file. This can result in one picture in a series
upsetting how another is displayed. Writing it into everything saved would
solve things without having having to change its status.

While I am up on my soapbox lets throw in one more item. Has the formulfile
entry in parameter files outlived its usefullnes. Fractint searches fast
and Orgform keeps the number of files to a minimum. With everyone keeping a
different file arrangement one of the things I do in editing a posted par
file is to delete the formulaname entry. The only trouble spot I see is
that it might be necessary when the formula is burried in the parameter
file. Admittedly this doesn't save much time, but why go looking in the
wrong place first?

Enough for now.

Charles

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Date: Sun, 10 May 1998 22:58:52, -0500
From: [e-mail] (MR CHARLES F CROCKER)
Subject: (fractint) Ver 20 additions

Hi All

My apoligies for poor editing. It suddenly struck me that I said formula
name in one place where I obviously meant formulafile.

Charles

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Date: Sun, 10 May 1998 23:13:39 -0400
From: davides <[e-mail]>
Subject: (fractint) Fiddling around

A couple of "quickies":

Fiddling_around    { ; David Shanholtzer
                     ; color map: dav41a
  reset=1960 type=mandel passes=t
  center-mag=-1.86177671495885500/-0.00000359488877766/95.72032
  params=0.000315/0 float=y maxiter=575 inside=260 outside=atan
  colors=_7YM00<37>w65w65v65<67>F1FE0GG1I<12>lLq<30>G1IE0GF0G<29>jAglBhlBh\
  <33>F1HE0GE0GE0G<25>J02J01K00L00
  }

Fiddling_around2   { ; David Shanholtzer
                     ; color map: dsgoldsilver
  reset=1960 type=mandel passes=t
  center-mag=-1.86177671495885500/-0.00000359488877766/95.72032
  params=0.000315/0 float=y maxiter=575 inside=260 outside=atan
  colors=000SHB<6>yhW<22>A20111<32>zzw<22>111MC7<6>yhW<14>A20000<55>000000\
  111222<36>zzw<42>111A20<2>OD8
  }

Regards,

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

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

Date: Sun, 10 May 1998 22:49:29 -0500 (CDT)
From: [e-mail] (Paul and/or Joyce Carlson)
Subject: (fractint) Double Exposure Dragons Formula

comment {
This formula applies the "double exposure" rendering method
to the Julia sets of Newtons's solution of (w*w-1)*(w*w+c)=0.
The coordinates for the Julia sets were picked off two of the
midgets from the pars included with the Dbl_Expos_Newt1
formula.  The second par I made especially for Linda (Gumbycat)
who really liked the image with the midget that was used for
that Julia set.

The degree of symmetry in these images is the same as that
of the the images containing the midgets from which the
Julia set coordinates were picked.

Sometime in the near (I hope) future I'll go into detail on
how to find the tiny "dragons" (they're infinite in number
in a properly chosen Newton Julia set).

I hope you enjoy these double exposure dragons - they are
probably different than any Julia dragons you've seen
before (at least their surroundings are).

Paul Carlson
}

frm:Dbl_Exp_Newt1_J {; Copyright (c) Paul W. Carlson, 1998
    ;
    ;   real(p1) = a factor controlling the size of the stalks
    ;   imag(p1) = minimum iterations
    ;   real(p2) = convergence test distance
    ;   imag(p2) = color scheme:
    ;              1 = 8 ranges,  30 colors per range (default)
    ;              2 = 2 ranges, 125 colors per range
    ;   p3       = Julia set coordinates
    ;
    z = bailout = iter = range_num = dist = 0
    w = pixel
    c = p3
    cm1 = c - 1
    tcm1 = cm1 + cm1
    sc = sqrt(-c)
    stalk_width = real(p1)
    skip_iters = imag(p1)
    cdist = real(p2)
    IF (imag(p2) == 2)
    num_ranges = 2
    colors_in_range = 125
    ELSE
    num_ranges = 8
    colors_in_range = 30
    ENDIF
    index_factor = (colors_in_range - 1) / stalk_width
    :
    w2 = w * w
    w = w - (w2 * w2 + cm1 * w2 - c) / (4 * w2 * w + tcm1 * w)
    ;
    IF (iter > skip_iters)
    IF (abs(real(w)) <= abs(imag(w)))
        min_dist = abs(real(w))
    ELSE
        min_dist = abs(imag(w))
    ENDIF
    IF (dist == 0 && min_dist < stalk_width)
        dist = min_dist
    ENDIF
    IF (|w + (-1,0)| < cdist)
        bailout = 1
    ELSEIF (|w + (1,0)| < cdist)
        bailout = 1
    ELSEIF (|w + sc| < cdist)
        bailout = 1
    ELSEIF (|w - sc| < cdist)
        bailout = 1
    ENDIF
    ENDIF
    IF (bailout == 1)
    z = index_factor * dist + range_num * colors_in_range + 1
    ENDIF
    range_num = range_num + 1
    IF (range_num == num_ranges)
        range_num = 0
    ENDIF
    iter = iter + 1
    z = z - iter
    bailout == 0 && |w| < 1.0e20
}

dbexntj1           { ; Copyright (c) Paul W. Carlson, 1998
  reset=1960 type=formula formulafile=dbexnt1j.frm
  formulaname=dbl_exp_newt1_j passes=t
  center-mag=-0.05562763234306169/+0.05462019519570405/2806.978\
  /1/-44.999 params=0.1/50/1e-007/2/0.99933510184/0.03646053069
  float=y maxiter=3000 inside=253 outside=summ
  colors=000zz0<123>aG0zzz<123>VVV000<3>000
  }

dbexntj2           { ; Copyright (c) Paul W. Carlson, 1998
  reset=1960 type=formula formulafile=dbexnt1j.frm
  formulaname=dbl_exp_newt1_j passes=t
  center-mag=-0.04970475011584191/+0.05511014311616688/951.9526\
  /1/-160 params=0.1/10/1e-007/1/30.450762553/-0.006872433
  float=y maxiter=1000 inside=253 outside=summ
  colors=000fOz<28>I0Kz0f<28>O08z88<28>O00zW0<28>c40zz0<28>aG00\
  zR<28>0C40zz<28>0CCGGz<28>00O000<13>000
  }


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Date: Sun, 10 May 1998 22:58:15 -0500 (CDT)
From: [e-mail] (Paul and/or Joyce Carlson)
Subject: (fractint) correction

In my "Double Exposure Dragons Formula" posting a few minutes ago
I mistakenly said I made the second par especially for Linda
(Gumbycat).  Wrong - I should have said the first par, not the
second one.

Paul Carlson


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Date: Sun, 10 May 1998 21:02:55 -0700 (MST)
From: Kerry Mitchell <[e-mail]>
Subject: (fractint) FC2K images

Recently, Rollo Silver posted, soliciting contributions to the 2000
Fractal Calendar.  Here, for you Fractint enjoyment, are some of the
images I submitted.

- -------------------------------------------------------------------------------
Kerry Mitchell
[e-mail]
- -------------------------------------------------------------------------------

frm:nearline01_jul { ; Kerry Mitchell
        ;
        ; color Julia sets with nearest approach to a given line
        ; line given by parameter c (first iterate of 0)
        ; so color lines pass through 0 on first iteration
        ;
        ; use outside=iter, decomp=256
        ; p1 = Julia parameter
        ; real(p2) = bailout (large--try 1e12)
        ; zc is the variable used for iteration, z for coloring
        ;
        zc=pixel, c=p1, maxr=real(p2), minr=maxr
        ct=imag(c), st=real(c), iter=1:
        ;
        ; iteration
        ;   find distance to line, r
        ;   if r < minimum, update minimum to r
        ;
        iter=iter+1, zc=sqr(zc)+c, rzc=|zc|
        r=|ct*real(zc)-st*imag(zc)|
        if (r<minr)
          minr=r
          end if
        ;
        ; bailout--take log of minimum distance as decomp angle
        ;
        if ((rzc>maxr)||(iter==maxit))
          iter=-1
          angle=log(minr)
          z=cos(angle)+flip(sin(angle))
          end if
        iter>0
        }

frm:bubbleboth_jul { ; Kerry Mitchell
        ;
        ; color Julia sets with small bubbles
        ; filled with swirls (combination of rays and circles)
        ;
        ; use outside=iter, decomp=256
        ; p1 = Julia parameter
        ; real(p2) = bailout (at least 4)
        ; imag(p2) = radius of bubble (try ~ .1)
        ; real(p3) = amount of circles (0 for only rays, try 0.5)
        ; imag(p3) = amount of rays (0 for only circles, try 0.5)
        ; zc is the variable used for iteration, z for coloring
        ;
        zc=pixel, c=p1, maxr=real(p2), minr=imag(p2), scale=2*pi/minr
        minset=0, iter=1, rzc=cabs(zc), minzc=zc
        weight=real(p3)+imag(p3)
        weightc=real(p3)/weight, weightr=imag(p3)/weight
        ;
        ; initial check:  see if pixel magnitude falls within threshold
        ;   if so, set minset flag, update minimum to current magnitude
        ;
        if (rzc<minr)
          minr=rzc, minzc=zc, minset=1
          end if
        :
        iter=iter+1, zc=sqr(zc)+c, rzc=cabs(zc)
        ;
        ; iteration check:  see if iterate falls within threshold
        ;   if so, set minset flag, update minimum to current magnitude
        ;
        if (rzc<minr)
          minr=rzc, minzc=zc, minset=1
          end if
        ;
        ; bailout
        ;   set "iteration done" flag (iter=-1)
        ;   scale minr to find decomp angle for circles
        ;   take polar angle from minzc to ray decomp angle
        ;   final angle is weighted average of ray and circle angles
        ;   if a new minimum was never set (minset=0),
        ;   set z=0 (color 0 under decomp)
        ;
        if ((rzc>maxr)||(iter==maxit))
          iter=-1
          anglec=scale*minr, angler=imag(log(minzc))
          angle=weightc*anglec+weightr*angler
          z=(cos(angle)+flip(sin(angle)))*minset
          end if
        iter > 0
        }

frm:ave8xlty_man { ; Kerry Mitchell 13feb98
        ; real(p1) = bailout (try 10)
        ; imag(p1) = rounding factor (try 1)
        ; real(p2) = inner coloring speed (0 for outer only)
        ; imag(p2) = outer coloring speed (0 for inner only)
        ; fn1 = arbitrary function (try log)
        zc=0, c=pixel, iter=1, maxr=real(p1), count=0
        b1=maxr, fac=b1^0.125, b2=b1*fac, b3=b2*fac
        b4=b3*fac, b5=b4*fac, b6=b5*fac, b7=b6*fac, b8=b7*fac
        iter1=iter2=iter3=iter4=iter5=iter6=iter7=iter8=0
        inspeed=real(p2)*pi*255/128, roundfac=imag(p1)
        outspeed=imag(p2)*pi*255/128:
        iter=iter+1, zc=sqr(zc)+c, r2zc=|zc|
        temp=fn1(zc)/roundfac, frac=roundfac*(temp-round(temp))
        if (real(frac)<imag(frac))
          count=count+1
          end if
        if (r2zc>b1)
          if (iter1==0)
            iter1=iter, q1=count/iter
          endif
        if (r2zc>b2)
          if (iter2==0)
            iter2=iter, q2=count/iter
          endif
        if (r2zc>b3)
          if (iter3==0)
            iter3=iter, q3=count/iter
          endif
        if (r2zc>b4)
          if (iter4==0)
            iter4=iter, q4=count/iter
          endif
        if (r2zc>b5)
          if (iter5==0)
            iter5=iter, q5=count/iter
          endif
        if (r2zc>b6)
          if (iter6==0)
            iter6=iter, q6=count/iter
          endif
        if (r2zc>b7)
          if (iter7==0)
            iter7=iter, q7=count/iter
          endif
        if (r2zc>b8)
          if (iter8==0)
            iter8=iter, q8=count/iter
          endif

        iter=-1
        q=(q1+q2+q3+q4+q5+q6+q7+q8)*0.125
        angle=q*outspeed
        z=cos(angle)+flip(sin(angle))

        endif
        endif
        endif
        endif
        endif
        endif
        endif
        endif

        if (iter==maxit)
          q=count/iter
          angle=q*inspeed
          z=cos(angle)+flip(sin(angle))
          iter=-1
          end if

        iter>0
        }

frm:gaussinttot_jul { ; Kerry Mitchell
        ;
        ; Gaussian integer coloring of Julia sets
        ;   color by average distance to nearest integer
        ;   inside and outside handled the same way
        ;
        ; use decomp=256
        ; p1 = Julia parameter
        ; real(p2) = bailout (try 1e12)
        ; imag(p2) = scaling factor (try 30)
        ; variable zc used for calculation; coloring done with z
        ;
        zc=pixel, c=p1, rmax=real(p2), scale=imag(p2)
        iter=1, rmin=1, z=zc, tot=0:
        ;
        ; iteration
        ;   zr = gaussian integer
        ;   r = distance to zr
        ;   zmin = integer with minimum distance
        ;   tot = running sum of r's
        ;
        iter=iter+1, zc=sqr(zc)+c, rzc=|zc|
        zr=round(zc), r=|zc-zr|, tot=tot+r
        ;
        ; bailout
        ;   scale average distance to decomp angle
        ;   set "iteration done" flag (iter=-1)
        ;
        if ((rzc>rmax)||(iter==maxit))
          angle=scale*tot/(iter-1)
          z=cos(angle)+flip(sin(angle))
          iter=-1
          end if
        iter>0
        }

frm:gaussintr_man { ; Kerry Mitchell
        ;
        ; Gaussian integer coloring of Mandelbrot set
        ;   color by magnitude of nearest gaussian integer
        ;   inside and outside handled the same way
        ;
        ; use decomp=256
        ; real(p1) = bailout (try 1e12)
        ; variable zc used for calculation; coloring done with z
        ;
        zc=0, c=pixel, iter=1, rmax=real(p1), rmin=1:
        ;
        ; iteration
        ;   zr = gaussian integer
        ;   r = distance to zr
        ;   zmin = integer with minimum distance
        ;
        iter=iter+1, zc=sqr(zc)+c, zr=round(zc), r=|zc-zr|,
        if (r<rmin)
          rmin=r, zmin=zr
          end if
        ;
        ; bailout
        ;   set "iteration done" flag (iter=-1)
        ;   use log of magnitude of nearest gaussian integer as
        ;     decomposition angle
        ;
        if ((|zc|>rmax)||(iter==maxit))
          iter=-1
          angle=log(cabs(zmin)+1)
          z=cos(angle)+flip(sin(angle))
          end if
        iter>0
        }

paint { ; "Splatter Paint" copyright 1998 Kerry Mitchell
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gaussintr_man passes=1
  center-mag=-0.81049181278603110/+0.20246399896589420/320.1844/1.333333
  params=4/0 float=y maxiter=1000 inside=0 decomp=256 periodicity=0
  viewwindows=1/1/yes/0/0 cyclerange=0/255
  colors=000000O00k00z80zW0zs0zzGzzczzzbzzFzz0qz0Uz06z00i00M100P00l00z90zX\
  0zt0zzIzzexzz`zzDzz0pz0Tz05z00h00L300R00n00zB0zZ0zv0zzJzzfwzz_zzCzz0nz0R\
  z03z00f00J400S00o00zC0z_0zw0zzLzzhuzzYzzAzz0mz0Qz02z00e00I600U00q00zE0za\
  0zy0zzMzzitzzXzz9zz0kz0Oz00z00c00G700V00r00zF0zb0zz0zzOzzkrzzVzz7zz0jz0N\
  z00z00b00F900X00t00zH0zd0zz1zzPzzlqzzUzz6zz0hz0Lz00x00`00DA00Y00u00zI0ze\
  0zz3zzRzznozzSzz4zz0gz0Kz00w00_00CC00_00w00zK0zg0zz4zzSzzonzzRzz3zz0ez0I\
  z00u00Y00AD00`00x00zL0zh0zz6zzUzzqlzzPzz1zz0dz0Hz00t00X009F00b00z00zN0zj\
  0zz7zzVzzrkzzOzz0zz0bz0Fz00r00V007G00c00z00zO0zk0zz9zzXzztizzMzz0yz0az0E\
  z00q00U006I00e00z20zQ0zm0zzAzzYzzuhzzLzz0wz0_z0Cz00o00S004J00f00z30zR0zn\
  0zzCzz_zzwfzzJzz0vz0Zz0Bz00n00R003L00h00z50zT0zp0zzDzz`zzxezzIzz0tz0Xz09\
  z00l00P001M00i00z60zU0zq0zzFzzbzzzczzGzz0sz0Wz08z00k00O
  }

nebula { ; copyright 1998 Kerry Mitchell
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=gaussinttot_jul passes=1
  center-mag=-0.51143775992349360/+0.17382528491600080/63.77551/1.333333
  params=0.28/0.005/1e12/100 float=y maxiter=1000 inside=0
  decomp=256 periodicity=0 viewwindows=1/1/yes/0/0 cyclerange=0/255
  colors=GTg<17>AKYAJXAJWAIVAIU<2>8GS8GR8FR8FQ7EP<27>001000001<37>AJXBKXBK\
  YBLYCLZ<18>HUiIViIVjJWkJWk<19>RetRftSftSgtTgt<2>UivVjvVjvVjv<2>YlwYlwZmw\
  Zmx_nx<8>crydsyesyftygty<2>jvzjwzkwzlwz<4>tzzzzztzz<4>lwzkwzjvzivzhuz<10\
  >`px`ox_ox_nxZnx<5>WkvVjvVjvViv<10>QdsPcrPcrObqObq<19>HTh
  }

shades-of-meaning  { ; copyright 1998 Kerry Mitchell
  reset=1960 type=formula formulafile=average.frm
  formulaname=ave8xlty_man function=recip
  center-mag=-0.5/0/0.6/1.333333/-90 params=100/2/1/1 float=y
  maxiter=256 inside=0 decomp=256 periodicity=0
  colors=zzzvzz<3>qyzpyzpxz<9>jvzivzivziuz<16>bqyaqyaqyapyapyapy<2>_oy_oy_\
  ox_oxZnx<23>ThuThuThuTguSguSgu<57>HThHThGThGTgGSgGSg<39>9IW9IV9IV9HU9HU<\
  69>000 cyclerange=0/255 viewwindows=1/1/yes/0/0
  }

horse { ; "Just Seahorsin' Around" copyright 1998 Kerry Mitchell
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=ave8z1gtz2_man viewwindows=1/1/yes/0/0
  center-mag=-0.74359110937120150/+0.13797992562328580/124.0249/1.333333/-78
  params=1410065408/0/2/4 float=y maxiter=4000 inside=0
  decomp=256 periodicity=0 cyclerange=0/255
  colors=00M<5>004001100<20>z00<20>zz0<19>zzwzzzxzz<18>4zz1zz0yz<20>00z<20\
  >000000<20>z00<19>zv0zy0zz1<20>zzz<20>0zz<20>00z<12>00P
  }

elephant-down { ; copyright 1998 Kerry Mitchell
; How do you get down from a duck?
; You don't--you get down from an elephant.
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=bubbleboth_jul passes=1 viewwindows=1/1/yes/0/0
  center-mag=-0.327896/0.602347/1.964667/1.333333 decomp=256
  params=0.3/0.01/1000/0.24175/3/1 float=y maxiter=1000 inside=0
  colors=000<10>00t00z20z50z70zA0z<7>o0z<2>w6tz9qzDm<10>zz0<10>Uz0Rz0Px0Nu\
  0Ls0Ip0<3>BW0<2>380001006<8>00p00v00z<2>80zB0zG0z<4>e0zk0zo0z<3>zAp<11>z\
  z0<11>Rz0<2>Kr0Io0Gj0Fe0D_0BU08M05E0360002<9>00r00w10z30z60z80zC0z<5>g0z\
  l0zp1ys3wu5ux7szBo<9>zs7zw3yz0<10>Tz0Qy0Ow0Mt0Kr0In0Gi0Ec0CZ0<3>240003<1\
  0>00x10z40z60z90zD0z<5>h0zm0zq1ys3wv6ty8r<11>zx2xz0<11>Qy0Ov0Lt0Jq0Hm0Fg\
  0Eb0CY0<3>120 cyclerange=0/255 periodicity=0
  }

warrior { ; copyright 1998 Kerry Mitchell
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=nearline01_jul center-mag=0/0/0.8069145/1.2294/-11
  params=-0.125/0.649519052838/1000000/0 float=y maxiter=256 inside=0
  decomp=256 periodicity=0 viewwindows=1/1/yes/0/0 cyclerange=0/255
  colors=r01<7>z00z00z11<60>zyyzzzyyz<60>11z00z00z00y<60>001000001<54>q01
  }



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Date: Mon, 11 May 1998 00:27:34 -0700
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) periodicity=nnn on menu

At 06:12 PM 5/10/98 -0600, Tim wrote:
>Would folks like to see the commandline control periodicity=nnn
>promoted to menu status?
>...
>To play devil's advocate, why would you want periodicity=nnn in a
>menu since entering it via the <G> command is so easy?

Oh, I don't know.  Because I'm lazy and my memory's flakey?
Also because I'd like to be able to easily check its status.


Bud


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Date: Mon, 11 May 1998 01:48:39 -0700
From: "Terry W. Gintz" <[e-mail]>
Subject: (fractint) fractint v20 and beyond

Now that I am out of the shareware market, perhaps people won't accuse me
of having "vested" interests in the following criticism.  I don't use
Fractint, per se, but that doesn't mean I wouldn't like to see
improvements made in it, especially the user-interface.  Anyone afraid of
having some of their most basic beliefs in Fractint challenged need not
read on.

New to this list, I'm not quite sure of the direction of Fractint, but
I've been told that it will presumably support true color in the version
after v20.  I'm getting the strong feeling, just from the brief time I've
had to browse the numerous messages on the list, that the programmers of
Fractint intend to keep the same DOS-style interface in future versions.
If that isn't the case, then the following may be overstated, but if
true...  IMO, this is a big mistake, as WinFract could have much more
than its present psuedo-Windows-compatible content.  More on this below.

With all the hype I have read about the greatness of Fractint, why is it
so hard for its programmers to get a real handle on Windows programming?
Is it because to understand Windows coding, you have to like Windows?  It
all goes back to the original demand for maximum speed, and the apparent
overhead of Windows that makes graphics "unacceptably" slow.  Like the
DOS interface, this notion is obsolete.  Fractal programming benefits
from assembly-language coding, true, but Windows certainly doesn't
restrict the programmer there.  Almost all the speed-up techniques
Fractint uses in its DOS version can be applied in a Windows  program.
What is left to complain about?  Mainly that the screen can't be drawn in
a second or two, like a DOS program can do by getting "under" the
system's graphics layers.  So for the sake of a few seconds draw time,
the most powerful version of Fractint(not necessarily the most powerful
fractal program anymore) keeps a character-based windowing interface and
an archaic help system.  I have some reservations about whether the
screen-draw time is even an issue these days, as I have a Windows program
that draws Fractint's opening screen(the Mandelbrot set) in true color in
4 seconds or less(800X600 at 233 Mhz) without the extensive optimization
that Fractint uses(like symmetry and periodocity.)   The combination of
assembly language and solid guessing is as effective in Windows as in
DOS.

Or are there other considerations we aren't being informed about?  Is it
the screen draw time, or plain stubbornness, or just incompetence?  I
don't throw this out lightly.  I've used WinFract some in Windows 3.1,
and that was hardly a graceful multitask promoting program.  Numerous
bugs made it crash or mess up Windows.  The help file was much
abbreviated from the full DOS version, which made it hard to understand
some features without reading the DOS help file.   No attempt to upgrade
this poor showing to a Windows 95 program.  Even less attempt to include
what the DOS version of Fractint now includes.

I would welcome a chance to contribute to a genuine Windows 95 version of
Fractint, one that would once and for all lay the "DOS" version to rest.
(Who today prefers the DOS command line interface to the clarity and
elegance of Windows 95?  Or it need not be compared to Windows 95, but
any up-to-date windowing system, such as Macintosh or X-Windows...)    I
couldn't make this offer when my programs were still shareware, but I'd
sure like to improve the quality of fractal artistry as it now stands.
There is much in my own programs that would add to the power of Fractint,
including true color, AVI and midi support.  The problem I have now is
deciphering much of the abstract(optimizing) code that Fractint has
accumulated over the years.  Maybe there is a master decryption log to
explain all the routines in Fractint's source code,  because as it is
distributed now, no one programmer could understand it all(without a log
book.)  If there is any attempt to keep a Windows 95 version current and
maintainable, complete documentation for all source code, as well as
program options, is necessary.

Any comments, Tim?

Best Regards,

Terry W. Gintz
- --
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End of fractint-digest V1 #195
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