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fractint-digest       Tuesday, January 13 1998       Volume 01 : Number 073




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

Date: Mon, 12 Jan 1998 20:55:03 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) article in Du

Damien,

>>The online help indicates that passes=3D2 generates the same image as
passes=3D1, just doing a lower-res pass first.  Is the second pass a gues=
sing
pass?  I have been using passes=3D2 quite a bit; if it guesses on its sec=
ond
pass, I will need to go back and re-generate quite a few images.<<

And Tim Wegner also swears that this is true!  However, I have calculated=

several images (I think they were integer math artifacts) where the passe=
s=3D2 =

did NOT match passes=3D1.  However, in most cases I think passes=3D2 will=
 =

generate the same image. Unfortunately, I can't come up with an example r=
ight =

now.  You might try a few 320x240's and compare byte counts in the files.=


Lee

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

Date: Mon, 12 Jan 1998 20:47:53 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) article in Du

Lee swears:

> And Tim Wegner also swears that this is true!  However, I have calculated
> several images (I think they were integer math artifacts) where the passes=2
> did NOT match passes=1.  However, in most cases I think passes=2 will
> generate the same image. Unfortunately, I can't come up with an example right
> now.  You might try a few 320x240's and compare byte counts in the files.

And I have a proof but it is too big to write in the margin <g!>

Passes=2 is absolutely guaranteed to be identical to to passes=1.
Fractint goes in 1 pass mode, but writes every other line, but also
writes the line below with the same line for appearances. On the
second pass, the even lines are corrected.

The only exceptions I can think of:

1. If you are using a formula that does not properly initialize
variables (whether a buggy built-in formula or an ill-formed parser
formula) then the color of a pixel would depend on the value the
uninitialized variable had previously. In this case, 2-pass would be
different because the pixels are do0ne in a different order.

2. If random numbers are used, calculating the pixels in a different
order chganges the result.

My carefully qualified statement becomes: for all fractal algorithms
where the color of a pixel is independent of the previous pixel and
independent of the order of pixels (eg - no random numbers) then 2
pass is identical to 1-pass.

Maybe your counterexample used random numbers. That would do it!

Tim


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

Date: Mon, 12 Jan 1998 20:52:49 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) Re: tim's_fract

Justin wrote:

> As a result, all old files disappeared, including Tim's.  Bottom
> line: Maybe someone else has it, but I don't.

You can always locate old messages in the archives. Download some
files from:

ftp://ftp.xmission.com/pub/lists/fractint/archive/

and search for what you are looking for.

Tim


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

Date: Mon, 12 Jan 1998 21:50:39 EST
From: Bill at NY <[e-mail]>
Subject: Re: (fractint) Simplgif upda

In a message dated 98-01-11 19:19:55 EST, you write:

<<
 For safety, symmetry should be turned off when using the
 divide-and-conquor process.

 Tim >>

Unfortunately, many of my pictures use the symmetry even when it's not there
mathematically.  It's also frustrating that d and c worked with these formulas
on my old 486dx33 and now won't work on my Pentium II 266.

Thanks anyway.  Still the best program going!

Bill


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

Date: Mon, 12 Jan 1998 19:15:49 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) article in Du

Lee....

Thanks for the insights......I'll be more patient and use the author's
approach

Angela


At 08:27 AM 1/12/98 -0500, you wrote:
>Angela,
>
>>>  Speaking of....is there a way for me to force every view of a par to be
>with "g" rather than what the author of the par has in mind??? I like to
>"speed read" thru pars..since I often can't remember which ones i've seen
>and which are new.  Having to reset the other options is a pain. <<
>
>   "g" is a guessing algorithm and may lead to generating a vastly
>different image than what was specified in the original par, particularly
>in very chaotic areas where very small lakes or islands may be missed, and
>continuous lines may appear discontinuous, etc.   Passes=1 is the only
>non-guessing algorithm.  Alsi if in the par passes=t or passes=b and a
>fillcolor is specified, the image will also be very different. Instead, for
>speed, use a viewwindows mode.  Forcing a par to not display what the
>author had in mind is a very bad idea - one  might just as easily try to
>force all pars to load with his favorite color map.
>
>Lee
>
>-
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>
>

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

Date: Mon, 12 Jan 1998 22:04:16 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) article in Du

Tim,

>>1. If you are using a formula that does not properly initialize variabl=
es
(whether a buggy built-in formula or an ill-formed parser formula) then t=
he
color of a pixel would depend on the value the uninitialized variable had=

previously. In this case, 2-pass would be different because the pixels ar=
e
do0ne in a different order.

>>2. If random numbers are used, calculating the pixels in a different
order chganges the result.

>>My carefully qualified statement becomes: for all fractal algorithms
where the color of a pixel is independent of the previous pixel and
independent of the order of pixels (eg - no random numbers) then 2 pass i=
s
identical to 1-pass.

Maybe your counterexample used random numbers. That would do it!<<

I concur with all of the above.  As I remember, I was running some pars
that had some fuzzy artifacts along the left edge of the image. The par
specified passes=3D2.  When I tried passes=3D1, the picture was different=
=2E It
could very well have been (and probably was) due to uninitialized
variables.

Lee

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

Date: Mon, 12 Jan 1998 19:33:40 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Re: Tim's_Fract

Kathy...

How did you figure out what values to enter?? This is exactly what I want
to to do a formula....change it from pentagonalish to 6 or 7 pointed or 8
or 9 points. I tried changing the constant in the formula I'm fiddling with
and didn't notice any change....and you picked such off the wall numbers.
Replacing sqr with tan or atan or atanh in my particular formula yielded 3
pointyness......maybe I can throw in a 2 or something.

Angela

At 03:50 PM 1/12/98 -0800, you wrote:
>Jay Hill wrote
>>
>
> >> The truth is that you don't need any mathematical knowledge to fool
>>> with formulas, just enough knowledge of the formula language to write
>
>>> formulas that are syntactically correct.......
>
>I have been playing around with the formulas fora little
>while now, enough to see that you can
>throw in a "cos(z)" or whatever without
>having an idea what the function is or what it
>might look like, and it is a lot of  fun to do that.
>I notice some things like if you choose tan as the
>function, it tends to have a certain look and I can
>kind of see that without understanding why that
>might be, but I would actually like to understand
>the math of it better because it is interesting.  Sometimes
>I throw in a bunch of extra terms expecting it to give
>a more complex, or maybe I should say "complicated"
>picture, and it will end up being a circle or a blank screen,
>and sometimes I can see why. (But usually not!)
>        I have been fooling around with the FGZ-Julia
>formulas by Michael Wareman posted
>to this list by Wizzle and I found one
>that had sort of a 3-way radial symmetry in all the
>little meeting points and I was wondering how you would
>write a formula that had 4-way or 5-way symmetry at those
>points and it turned out that subsequent formulas in the series
>had exactly that.  The weird thing is that the only thing that is
>different between them is the value of the constant c.  I would
>have thought that to change a 3-pointed star to a 5-pointed
>star you would have to change the number of variables or
>add a function or something, not just change a constant.
>I'm curious about what the people who understand all
>this can envision when they see a formula.
>
>5-way              { ; 5-way symmetry
>                     ; formula FGZ-Julia-9
>  reset=1960 type=formula formulafile=notew1.frm
>  formulaname=FGZ-Julia-9 center-mag=-1.00128/0.375621/6.666359/1.0001
>  fillcolor=0 decomp=2048
>
>colors=000MKHMMI000<16>C81D92FB3<2>LG4OI5QK7<12>vlYxn_yo`zpawn_ukY<16>bV\
>
>
>H000<22>000000223<5>HHNKKQNNTQQXTT_<6>ilploslpr<14>OI5<11>pgTriVulYxn_zp\
>
>
>a<4>jdWgaVcZT`WSYUR<3>KJNHGMGFL<10>724602702<20>Q08R09S09T0AU0A<6>`0Da0D\
>
>  b2D<14>zVF<10>hAEaI9<6>xTF<8>H3AC09908<6>KBDMDEMFFMHG
>  }
>4-way              { ; 4-way symmetry
>                     ; formula FGZ-Julia-6
>  reset=1960 type=formula formulafile=notew1.frm
>  formulaname=FGZ-Julia-6 center-mag=1.03307/-0.25166/18.72866/0.9999
>  fillcolor=0
>
>colors=0000dL<7>0zW<7>0JJ<14>0xx0zz2tt<6>JE9<15>yjU<7>BJF<15>_zn<6>LO3<8\
>
>
>>px9<5>KMGFGIBBM<14>WWz<7>J9J<15>zWz<7>J09<15>z0W<7>J90<15>zW0<7>JJ0<15>\
>
>  zz0<7>99J<15>WWz<7>0J9<6>0bJ
>  }
>3-way              { ; 3-way symmetry
>                     ; formula FGZ-Julia-5
>  reset=1960 type=formula formulafile=fractint.frm
>  formulaname=FGZ-Julia-5 center-mag=1.14479/-0.204081/54.65114/0.9996
>  fillcolor=0 decomp=2048
>
>colors=000VRQ<3>HGM<11>724602702<20>Q08R09S09T0AU0A<6>`0Da0Db2D<14>zVF<1\
>
>
>0>hAEaI9<6>xTF<8>H3AC09908<6>KBDMDEMFF<2>MMILPKNRM<9>kmn<6>D92<3>LG4OI5Q\
>
>
>K7<12>vlYxn_yo`zpa<14>OI5000<27>000<7>KKQNNTQQXTT_VWa<3>dfkginhjn<2>kmn<\
>
>  13>OI5<11>pgTriVulYxn_zpa<4>jdWgaVcZT`WSYUR
>  }
>
>aaaaghhh           { ; you don't want it in your shower
>                     ; formula FGZ-Julia-7
>  reset=1960 type=formula formulafile=notew1.frm
>  formulaname=FGZ-Julia-7 center-mag=-0.405487/-0.160257/3.205208
>  fillcolor=0 decomp=2048
>
>colors=000OI5<11>pgTriVulYxn_zpa<4>jdWgaVcZT`WSYUR<3>KJNHGMGFL<10>724602\
>
>
>702<20>Q08R09S09T0AU0A<6>`0Da0Db2D<14>zVF<10>hAEaI9<6>xTF<8>H3AC09908<6>\
>
>
>KBDMDEMFF<2>MMI000<16>C81D92FB3<2>LG4OI5QK7<12>vlYxn_yo`zpawn_ukY<16>bVH\
>
>  000<22>000000223<5>HHNKKQNNTQQXTT_<6>ilploslpr<13>QK8
>  }
>
>FGZ-Julia-5   {
>      z = c = pixel:
>         z = z * z + (-1.1266, 0.2666);
>         z = (3 * z * z) / (z + 3) + (-1.1266, 0.2666),
>      |z| <= 4
>   }
>
>FGZ-Julia-6   {
>      z = c = pixel:
>         z = z * z + (-0.97, 0.2709);
>         z = (3 * z * z) / (z + 3) + (-0.97, 0.2709),
>      |z| <= 4
>   }
>
>FGZ-Julia-7   {
>      z = c = pixel:
>         z = z * z + (-0.6908, 0.1185);
>         z = (3 * z * z) / (z + 3) + (-0.6908, 0.1185),
>      |z| <= 4
>   }
>
>FGZ-Julia-8   {
>      z = c = pixel:
>         z = z * z + (-0.5892, 0.0549);
>         z = (3 * z * z) / (z + 3) + (-0.5892, 0.0549),
>      |z| <= 4
>   }
>
>FGZ-Julia-9   {
>      z = c = pixel:
>         z = z * z + (-0.4919, 0.4572);
>         z = (3 * z * z) / (z + 3) + (-0.4919, 0.4572),
>      |z| <= 4
>   }
>
>
>-
>------------------------------------------------------------
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>
>

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

Date: Tue, 13 Jan 1998 08:14:36 -0800
From: cindy mitchell <[e-mail]>
Subject: (fractint) Dick Amerman

Hi,
I don't like going thru the list but I am unable
to reach you thru your email.
Was there a file attached to your last message?
I have checked and I have no new files.
    Cindy


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

Date: Tue, 13 Jan 1998 00:07:35 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) Re: Tim's_Fract

Hi Wizzle and Kathy,

Minor correction of the post, it was Tim that had words of wisdom...
Anyway, wizzle, read my article, it explains all  :-)
Well not all, but the formula are labeled Julia sets which they are.
As many points as you wish are there. It is a Julia set. That
means there is a Mandelbrot set in there somewhere which is
a road map to this Julia set, showing us the very constants
you are looking for.  Take another look at Paul Derbyshire's
Jan 2 lesson on Calculus.

The Mandelbrot set for this equation needs the roots of a quartic,
if my math is right. Hmmm... Maybe you will not want to follow
that path. But there is a graphical solution to this, using Fractint.
I'll explain it some time.

After some experimenting (which I'm not through with) I have found
some solutions for you. Try this function as a Mandelbrot map of this
Julia set.

frm:FGZ-M    { ; Jay Hill
   c = pixel,
   z=-sqrt(-c): ; approximate critical point
   z = z * z + c;
   z = (3 * z * z) / (z + 3) + c,
   |z| <= 36
  }

frm:FGZ-J   { ; Jay Hill
   ; p1 is the Julia set parameter
   z = pixel, c = p1:
   z = z * z + c;
   z = (3 * z * z) / (z + 3) + c,
   |z| <= 36
  }

Use the FGZ-M set, which is only approximate, to determine values
for c to use in the Julia set. Then run FGZ-J to see the Julia set.
Put the c in the p1 parameters. Pan around to see the patterns of
interest.  I have increased the bailout to check that we are not missing
anything.

Here are some sample values of c for branching patterns:

branches    real/imag of c
3     -0.19907435765/0.673367053
4    0.216404468/0.572864145
5    0.356414348/0.4020118415
3    -1.128637165/0.266836375
4    -0.97252777/0.275617093
6    -0.84400510/0.205528319

FGZ_M          { ; (c) Jay Hill, 1998
  ; Mandelbrot map uses formula FGZ-M
  ; colors by Kathy Roth
  reset=1960 type=formula formulafile=roth.par formulaname=fgz-m
  center-mag=-0.5/0./1.000001 maxiter=1500 fillcolor=0
  decomp=2048
  colors=000OI5<11>pgTriVulYxn_zpa<4>jdWgaVcZT`WSYUR<3>KJNHGMGFL<10>724602\
  702<16>M06N07O07P08Q08<10>`0Da0Db2D<14>zVF<10>hAEaI9<6>xTF<8>H3AC09908<6\
  >KBDMDEMFF<2>MMI000<16>C81D92FB3<2>LG4OI5QK7<12>vlYxn_yo`zpawn_ukY<16>bV\
  H000<22>000000223<5>HHNKKQNNTQQXTT_<6>ilploslpr<13>QK8
  }

FGZ_J          { ; (c) Jay Hill
  ; uses formula FGZ-J
  ; colors by Kathy Roth
  reset=1960 type=formula formulafile=roth.par formulaname=fgz-j
  center-mag=0./0./0.5 params=0./0. maxiter=1500 fillcolor=0
  decomp=2048
  colors=000MKHMMI000<16>C81D92FB3<2>LG4OI5QK7<12>vlYxn_yo`zpawn_ukY<16>bV\
  H000<22>000000223<5>HHNKKQNNTQQXTT_<6>ilploslpr<14>OI5<11>pgTriVulYxn_zp\
  a<4>jdWgaVcZT`WSYUR<3>KJNHGMGFL<8>947836724602702802<15>M06N07O07P08Q08<\
  10>`0Da0Db2D<14>zVF<10>hAEaI9<6>xTF<8>H3AC09908<6>KBDMDEMFFMHG
  }

Jay

- ----------
> From: Wizzle <[e-mail]>
> To: [e-mail]
> Subject: Re: (fractint) Re: Tim's_Fract
> Date: Monday, January 12, 1998 7:33 PM
>
> Kathy...
>
> How did you figure out what values to enter?? This is exactly what I want
> to to do a formula....change it from pentagonalish to 6 or 7 pointed or 8
> or 9 points. I tried changing the constant in the formula I'm fiddling with
> and didn't notice any change....and you picked such off the wall numbers.
> Replacing sqr with tan or atan or atanh in my particular formula yielded 3
> pointyness......maybe I can throw in a 2 or something.
>
> Angela
>
> At 03:50 PM 1/12/98 -0800, you wrote:
> >Jay Hill wrote
> >>
> >> Tim Wegner wrote:
> > >> The truth is that you don't need any mathematical knowledge to fool
> >>> with formulas, just enough knowledge of the formula language to write
> >
> >>> formulas that are syntactically correct.......
> >
> >I have been playing around with the formulas fora little
> >while now, enough to see that you can
[...]
> >        I have been fooling around with the FGZ-Julia
> >formulas by Michael Wareman posted
> >to this list by Wizzle and I found one
> >that had sort of a 3-way radial symmetry in all the
> >little meeting points and I was wondering how you would
> >write a formula that had 4-way or 5-way symmetry at those
> >points and it turned out that subsequent formulas in the series
> >had exactly that.  The weird thing is that the only thing that is
> >different between them is the value of the constant c.  I would
> >have thought that to change a 3-pointed star to a 5-pointed
> >star you would have to change the number of variables or
> >add a function or something, not just change a constant.
> >I'm curious about what the people who understand all
> >this can envision when they see a formula.


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

Date: Tue, 13 Jan 98 11:10:43 G+3
From: Mueen Nawaz <[e-mail]>
Subject: (fractint) Digest mode

Hi.

     This list is incredibly active. I just subscribed myself to the list and
within a few minutes...I get mail faster than I can read it.

     Isn't there any way to have digests for this list?

     I love fractals, but I'm signing off this list for now. So please send
in your answers to my address ([e-mail]).

Thanks.

Mueen Nawaz

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Date: Tue, 13 Jan 1998 04:10:14 EST
From: MAksoy <[e-mail]>
Subject: (fractint) Old Winfracter Learning New Fractint Tricks

Hi everybody!
I'm new to this list, but have been making fractals with Winfract for some
time.  I thought it was time to get serious about Fractint, since it has
useful features (palette editing and rotatable zoombox, to name two) that
Winfract lacks.

So, I've been putting the Good Ship Fractint through a shakedown cruise on my
computer. Generally, it's been smooth sailing with only a few questions to
ask:

I have a second internal hard drive (D:).  Can I access this drive from
Fractint (which is on C:)?

I'd like to give Fractint a large fractal to render in DOS while I do other
tasks in Win95.  Is this possible?  In general, what settings do I need to
maximize Fractint compliance with Windows?

When going into color cycling mode, I've ocassionally noticed that 1 color in
my image palette changes to grey.  This appears to be one of the 2 crossed-out
colors used for the palette frame in palette editing mode.  Is there any easy
way to prevent this from happening?

So far, though, I've been having fun... especially with colormaps ... the <e>
key opens up a whole new world in this respect!!

All are welcome to visit my Winfract fractal gallery at:
    http://members.aol.com/fractasy/fractasy.htm

and my gallery of surreal worlds incorporating fractal elements at:
http://members.aol.com/maksoy/vistfrac/notworld.htm.

Mark Aksoy (aka Maksoy)








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

Date: Tue, 13 Jan 1998 02:27:26 -0800
From: kathy roth <[e-mail]>
Subject: (fractint) Re: Tim's_Fract

Here's my try on Tim's_fract

barbie*goes*psycho { ; palette from Les St. Clair (sorry!)
  reset=1960 type=formula formulafile=fractint.frm
  formulaname=Tim's_fract center-mag=0.0125392/-1.06281/13.33333
  float=y maxiter=256 inside=16 outside=real decomp=256 periodicity=0

colors=000<23>000000223<5>HHNKKQNNTQQXTT_<6>ilploslpr<14>OI5<11>pgTriVul\


Yxn_zpa<4>jdWgaVcZT`WSYUR<3>KJNHGMGFL<10>724602702<20>Q08R09S09T0AU0A<6>\


`0Da0Db2D<14>zVF<10>hAEaI9<6>xTF<8>H3AC09908<6>KBDMDEMFF<2>MMI000<16>C81\

  D92FB3<2>LG4OI5QK7<12>vlYxn_yo`zpawn_ukY<16>bVH
  }


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Date: Tue, 13 Jan 1998 02:44:09 -0800
From: kathy roth <[e-mail]>
Subject: (fractint) Re: Tim's_fract

Wizzle wrote:
>How did you figure out what values to enter?? This is exactly what I
want
>to to do a formula....change it from pentagonalish to 6 or 7 pointed or
8
>or 9 points. I tried changing the constant in the formula I'm fiddling
with
>and didn't notice any change....and you picked such off the wall
numbers.
>Replacing sqr with tan or atan or atanh in my particular formula
yielded 3
>pointyness......maybe I can throw in a 2 or something.

Angela

I didn't put those numbers in there, they came with the formulas
as posted, and what you said is what I have been wondering
about.  Those numbers were so weird.  On  a lot of the formulas
with changeable parameters, I will throw in a number
and then a different one and sort of  zero in on
something that looks good, but I was wondering if
some of the people doing this can actually envision some of the
results.  I mean, obviously no one will know exactly what
- -1.684 will do but do they understand what changeing the
constant versus adding another function will do?


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Date: Tue, 13 Jan 1998 03:35:50 -0800
From: kathy roth <[e-mail]>
Subject: (fractint) Re: Tim's_fract

Jay Hill wrote
>Minor correction of the post, it was Tim that had words of wisdom...
>Anyway, wizzle, read my article, it explains all  :-)
>Well not all, but the formula are labeled Julia sets which they are.
>As many points as you wish are there. It is a Julia set. That
>means there is a Mandelbrot set in there somewhere which is
>a road map to this Julia set, showing us the very constants
>you are looking for.............

Hi.  Thanks!- I read this after my other post and I am
going to go away and mull it over for a couple of years.
Actually the palette is by Les St. Clair from the contest
entry;  I would not want to steal it without giving credit.


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Date: Tue, 13 Jan 1998 07:18:56 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Re: Tim's_Fract

Jay...

Minor correction of the post, it was Tim that had words of wisdom...
>Anyway, wizzle, read my article, it explains all  :-)
>Well not all, but the formula are labeled Julia sets which they are.
>As many points as you wish are there. It is a Julia set. That
>means there is a Mandelbrot set in there somewhere which is
>a road map to this Julia set, showing us the very constants
>you are looking for.  Take another look at Paul Derbyshire's
>Jan 2 lesson on Calculus.
<<snip>>

What article and where can I get it??? I never took calc.....so I don't
think I'd understand Paul's Jan 2 lesson.

I know it's a real challenge to explain a math problem and be limited by
not being able to use math.......but hey....when I was in school math
wasn't nearly as interesting as now that I'm doing fractals. Thanks for the
explanation Jay.....I'll read it carefully.

I wanted to modify Linda Allison's star formula

051597-002   {; Linda Allison May 15, 1997
 z=0;
 c=log(sqr(sqr(pixel))*pixel)*0.2:
 z2=fn1(z)+c
 z=c*(1-z2*z2)/(1+z2*z2)
 |z|<=p1
}

If I replace one of the sqr with tan, atan or sin (etc), I get a three
sided image (Linda's is 5 sided) or 10 sided. I was wondering how to get to
4, 6, 7 or 8 sides. I tried adding a constant as Kathy suggested and got a
more complex 3 or 10 sided image. But that was a fun excursion too. Who
would have thunk math could ever be fun?

Angela

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Date: Tue, 13 Jan 1998 07:30:25 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Old Winfracter Learning New Fractint Tricks

Hi Mark!!

You have a nice gallery....I liked your idea of making a "button" out of
the thumbnail.  If you haven't already....you might want to read Linda
Allison's great lessons on color maps and proportioning.....I keep them
handy at my site

http://wizzle.simplenet.com/fractals/fractalintro.htm

Welcome to the crowd and happy fractaling

Angela aka wizzle

At 04:10 AM 1/13/98 EST, you wrote:
>Hi everybody!
>I'm new to this list, but have been making fractals with Winfract for some
>time.  I thought it was time to get serious about Fractint, since it has
>useful features (palette editing and rotatable zoombox, to name two) that
>Winfract lacks.
>
>So, I've been putting the Good Ship Fractint through a shakedown cruise on my
>computer. Generally, it's been smooth sailing with only a few questions to
>ask:
>
>I have a second internal hard drive (D:).  Can I access this drive from
>Fractint (which is on C:)?
>
>I'd like to give Fractint a large fractal to render in DOS while I do other
>tasks in Win95.  Is this possible?  In general, what settings do I need to
>maximize Fractint compliance with Windows?
>
>When going into color cycling mode, I've ocassionally noticed that 1 color in
>my image palette changes to grey.  This appears to be one of the 2
crossed-out
>colors used for the palette frame in palette editing mode.  Is there any easy
>way to prevent this from happening?
>
>So far, though, I've been having fun... especially with colormaps ... the <e>
>key opens up a whole new world in this respect!!
>
>All are welcome to visit my Winfract fractal gallery at:
>    http://members.aol.com/fractasy/fractasy.htm
>
>and my gallery of surreal worlds incorporating fractal elements at:
>http://members.aol.com/maksoy/vistfrac/notworld.htm.
>
>Mark Aksoy (aka Maksoy)
>
>
>
>
>
>
>
>
>-
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>
>

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Date: Tue, 13 Jan 1998 10:58:02 -0500
From: Gedeon Peteri <[e-mail]>
Subject: (fractint) Paul Carlson's formulas

Many thanks to Paul Carlson for the wonderful formulas which just kept
on coming for a while, keeping me busy. I found the extensive comments
very helpful in understanding what's going on. So far I have worked
mostly with the four julia formulas, accumulating quite a few pars. Here
are some of them.
Gedeon

 gp-jball01         { ; (c) Gedeon Peteri, 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3d_balls_julia passes=1
  center-mag=2.1e-006/1.6e-007/0.5251441/1/-10
  params=-0.6466273535043001/-0.4439372085034847/0.1\
  /2/2/125 float=y maxiter=256 inside=0 outside=summ
  colors=G80cWlaUh`Te<2>VNVTLRRJMPHINFEKC8IA4G808\
  G0AI4CK8FNE<4>PXZRZbT`eUahWcl<3>`huaiwaixbjybjzbjz\
  <2>aixaiw`hu<2>YeoWclUahT`e<2>NVVLTRJRMHPIFNECK\
  84IA8KCENF<4>ZXPbZRe`ThaUlcW<3>uh`wiaxiayjbzjbzjb\
  <2>xiawiauh`<2>oeYlcWhaUe`T<2>VVNRTLMRJIPHENF8KC4\
  IA0G808G4AI8CKEFN<4>ZPXbRZeT`hUalWc<3>u`hwaixa\
  iybjzbjzbj<2>xaiwaiu`h<2>oYelWchUaeT`<2>VNVRLT\
  MJRIHPEFN8CK4AI08G80GA4IC8KFEN<4>PZXRbZTe`UhaWlc\
  <3>`uhawiaxibyjbzjbzj<2>axiawi`uh<2>YoeWlcUhaTe`<2\
  >NVVLRTJMRHIPFENC8KA4I80GG00I44K88NEE<4>XZZZbb`ee\
  ahhcll<3>huuiwwixxjyyjzzjzz<2>ixxiwwhuu<2>eoocll\
  ahh`ee<2>VVVTRRRMMPIINEEK88I44G00G80IA4KC8NFE<4\
  >XPZZRb`TeaUhcWl<3>h`uiawiaxjbyjbzjbz<2>\
  iaxiawh`u<2>eYo
  }

gp-jball03         { ; (c) Gedeon Peteri, 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3d_balls_julia passes=1
  center-mag=1.04946/-0.885465/4.586315/1/-30
  params=-0.8421309507983057/0.209256982529335/0.35\
  /2/2/125 float=y maxiter=256 inside=0 outside=summ
  colors=000BBB<5>DDDDDDEEEFFF<9>PPPPPPOOO<10>DDDDDD\
  CCCCCCCCC<4>BBBWK1<2>WL1WL1XM1YN1<4>aS1bU1dV1<4>\
  kc1ld1ng1ng1ld1<6>bU1aS1`R1_Q1<3>XM1WL1WL1WL1W\
  K1WK1m27<4>m27n28n28o28o28<7>v3Cw3Cx3Dy4E<5>t3Bs3Ar\
  3Ar2A<2>o28o28n28n28m27<4>m27PPP<3>PPPQQQQQQRRRRRR\
  <10>bbbcccccc<10>SSSRRRRRR<2>PPPPPPPPPPPPPPPPPPaX1\
  <2>aX1aY1bY1cZ1<2>e`1f`1gb1hb1<6>rk1tl1tl1<6>id1hb1\
  gb1f`1<4>bY1aY1aX1aX1aX1aX1W80<4>W80X80X80Y80Y80\
  <10>fB0fB0eB0<7>Z90Z90Y80Y80X80<6>W80BBBBBB
  }

gp-jball05         { ; (c) Gedeon Peteri, 1/10/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3d_balls_julia passes=1
  center-mag=-0.775855/1.08066/4.030264
  params=-0.375/0.652/0.12/2/2/125 float=y
  maxiter=256 inside=0 outside=summ
  colors=00e0MM<16>0ff0gg0ff<19>0II00I<20>00g\
  <20>00II0I<20>g0g<18>L0LK00<18>f00g00f00<18>\
  K00I00II0<20>gg0<20>II00I0<20>0g0<19>\
  0K00I00II0KK0LL
  }

gp-jcones01        { ; (c) Gedeon Peteri, 1/l0/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=pokornyconesjulia passes=1
  center-mag=8.88178e-016/-6.66134e-016/0.5264798
  params=-0.678/0.349/3/75 float=y maxiter=4095
  inside=0 outside=summ
  colors=000gKA<4>z00<7>`TF0W0<6>dnH<7>0W0W0z<6>\
  k`u<7>W0z00W<12>KilMmmLjl<14>00WW00<14>ue1<15>\
  W00G0G<13>dFjfGleFj<14>G0G0GG<14>dnH<15>0GGWG0\
  <14>z0W<15>WG000W<21>LklMmmLkl<22>00W`TFdPD
  }

gp-jcones03        { ; (c) Gedeon Peteri. 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=pokornyconesjulia passes=1
  center-mag=-0.861939/-0.0312907/3.332001/1/-90
  params=-1.7688/0.002/2/125 float=y maxiter=4095
  inside=0 outside=summ
  colors=000Pbs<2>TeuUfvTev<22>5MfFLM<14>bhj<15>\
  FLM03g<22>`bz<22>25h03g0Wz<14>00W<15>0WzFLM<14>\
  bhj<15>FLMJKQ<13>eej<15>JKQ00z<14>0zz<15>00z5Mf<17>\
  Oar
  }

gp-jpet04          { ; (c) Gedeon Peteri, 1/10/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=petals_julia passes=1
  center-mag=0.54483/-0.101538/15.40927/1/17.5
  params=-0.8421309507983057/0.209256982529335/\
  0.5/0/2/125 float=y
  maxiter=2047 inside=0 outside=summ
  colors=000P`cO`c<3>NZ`MY`MX_LWZLWYKVXKUX<12>\
  AGIMG4OH4QI5RJ5SK6UL7<7>eUBfVBgWBhXCiXC<2>\
  l_Dm_En`En`EoaE<3>qbFqbFqbFqcFqcF<46>MG46Xn\
  6Yo6Zq<5>8av8bv8bw8bw<6>8cx8cx8bw<2>8av7au\
  7`t7`s7_r7Zq6Zq<2>6Wm5Vk5Vk<2>4Sf4Qd3Pc3Ob<3>\
  2KV1JU1IS1GRJ98<3>PECQFDSHEUIF<6>bPMcQNdROeSP\
  fSPgTQ<2>iVSjWSkWTkWT<2>mXUmYUmYUmYUlXT<39>\
  KA9J98J98J98KUX<5>NZ`NZaO_bO_cO`c<3>PaeQbeQbe\
  QbeQbe<6>Pad
  }

gp-jpet05          { ; (c) Gedeon Peteri, 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=petals_julia passes=1
  center-mag=-0.00391175125758118/+0.08301662642285197\
  /106.5482/1/4.999 params=-1.7688/0.002/0.1/0/2/125
  float=y maxiter=2047 inside=0 outside=summ
  colors=000nAI<6>h6F444444<6>IIIJJJLLLMMMNNNPPP<3>\
  SSSTTTTTTTTTTTTTTT<4>QQQPPPNNN<2>JJJIIIGGGEEE<4>\
  444pX6qY8s_8t`9vaA<2>xcCydDydDzdD<2>ydDxcCwcCvb\
  BvaAt`9s_8qY8pX6U0Z<4>c0ke1mg1oi1qj1sl1tm1v<18>\
  V1`U0ZU0Zkkkmmm<3>pppqqqqqqqqqrrrqqqqqq<4>nnnmmm\
  kkkjjjiiiccc<6>YYY1HZ<4>4Ok5Qn5Rp5Sr6Tt6Uv6Vw<3>5\
  Rp5Qn4Ok<4>1HZ_C1<2>cD2dE2dE2<2>fE2gF2gF2gF2<5>\
  dE2cD2aD1`D1_C1LLL<5>UUUVVVWWWXXXYYY<4>aaabbbb\
  bbbbb<31>LLL2jA<3>2h92g92e9<2>1`81Z81W8e4D<5>\
  rCLtDMuEMvFNwFOxGOwFOvFN
  }

gp-jstalk01        { ; (c) Gedeon Peteri, 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3dstalks_julia passes=1
  center-mag=0.83707/2.10117/1.7401 params=-0.6466\
  273535043001/-0.4439372085034847/0.375/10000/2/125
  float=y maxiter=200 inside=255 outside=summ
  colors=000UPF<3>UPFVQGVQGWRGXRH<5>aVKbWLcYM<3>\
  haPjbQkcSmeTnfU<4>vmZwn_wn_<3>qhWogVnfUmeTkcSjbQ\
  <5>bWLaVK`VK<2>YSIXSHXRHWRGVQG<6>UPFF00<4>F00G00G0\
  0H00I00<4>M00M00O00<5>V00X00Y00_00`00a00c00e00\
  f00g00g00f00e00c00<8>R00Q00P00O00M00<5>I00H00G\
  00G00F00F00F00F00PFC<5>PFCQFCQGCRGCRHC<2>UICVJC\
  WKCXLCYLC<4>dRDeSDgTDiUD<3>pZEr`EtaEvcEwdEwdE<35>\
  SIDRHDQGDPFCPFC2H2<4>5K35L36M37N47O48P59Q5AQ5<8>\
  I`AIaAIaA<8>AS6AQ59Q5<3>6M35L35K34J34J2<2>2H22G12\
  G11G1<5>1F1
  }

gp-jstalk03        { ; (c) Gedeon Peteri, 1/10/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3dstalks_julia passes=1
  center-mag=-6.72822/2.64068/8.166044/1/-44.999
  params=-0.678/0.349/0.12/10000/2/98 float=y
  maxiter=200 inside=255 outside=summ
  colors=CIG6CA09R<9>0FX1GY1GY2HZ2I_<32>NasObtNat\
  <34>1GY0FX0FX0EW<7>09R78C<37>`afabg`af<6>WX`VW`\
  UV_UV_UV_<46>78CLSQ<17>Zeb_fcZec<37>7DB
  }

gp-jstalk04        { ; (c) Gedeon Peteri, 1/11/98
                     ; Formula by Paul Carlson
  reset=1960 type=formula formulafile=pcarlson.frm
  formulaname=3dstalks_julia passes=1
  center-mag=-3.70351/0.00893893/7.645239
  params=0.328/0.5659999999999999/0.25/10000/2/98
  float=y maxiter=200 inside=0 outside=summ
  colors=000JPN<8>CIGKG0<48>umLumLtlL<43>KG0DEI<39>\
  WXaWXaWX`<36>DEIDJH<36>dkhelidki<28>KQO
  }





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

Date: Tue, 13 Jan 1998 13:54:19 -0500
From: Sylvie Gallet <[e-mail]>
Subject: Re: (fractint) Re: Tim's_Fract

Hi Angela,

>> If I replace one of the sqr with tan, atan or sin (etc), I get a
>> three sided image (Linda's is 5 sided) or 10 sided. I was wondering
>> how to get to 4, 6, 7 or 8 sides. I tried adding a constant as Kathy
>> suggested and got a more complex 3 or 10 sided image. But that was a
>> fun excursion too. Who would have thunk math could ever be fun?

  Try the following formula:

051597-002-m1   {; Linda Allison May 15, 1997
                 ; modified by Sylvie Gallet
 ; 1st parameter: real(p1) =3D bailout
 ; 2nd parameter: imag(p1) =3D number of sides
 z =3D 0
 c =3D 0.2 * log(pixel^imag(p1)) :
 z2 =3D fn1(z) + c , sqz2 =3D sqr(z2)
 z =3D c * (1-sqz2)/(1+sqz2)
 |z| <=3D p1
}

        - Sylvie

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Date: Tue, 13 Jan 1998 20:25:13 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Re: Tim's_Fract

Thanks so much Sylvie....

I'd send a par as thanks, but Linda's formula is so good it's a snap to
make really good images...and they generate fast.....so I'll leave everyone
to have their own fun.  A word.....you have to set the decomp in the x
options to 256 or you don't get good images.

Which raises yet another question.....if one needs to do this....reset the
decomp for a value other than 0....is there a way to do that in the formula
itself? I got the formula from Linda then had to send out an agonized cry
for help because I didn't know to reset that option.....can hapless users
such as myself be protected?? I spent about an hour before I convinced
myself there was some data I didn't have....very
frustrating......fortunately I knew Linda and Janet and got saved. Someone
stumbling across this really good formula in an archive is not likely to be
so lucky....

Angela


At 01:54 PM 1/13/98 -0500, you wrote:
>Hi Angela,
>
>>> If I replace one of the sqr with tan, atan or sin (etc), I get a
>>> three sided image (Linda's is 5 sided) or 10 sided. I was wondering
>>> how to get to 4, 6, 7 or 8 sides. I tried adding a constant as Kathy
>>> suggested and got a more complex 3 or 10 sided image. But that was a
>>> fun excursion too. Who would have thunk math could ever be fun?
>
>  Try the following formula:
>
>051597-002-m1   {; Linda Allison May 15, 1997
>                 ; modified by Sylvie Gallet
> ; 1st parameter: real(p1) = bailout
> ; 2nd parameter: imag(p1) = number of sides
> z = 0
> c = 0.2 * log(pixel^imag(p1)) :
> z2 = fn1(z) + c , sqz2 = sqr(z2)
> z = c * (1-sqz2)/(1+sqz2)
> |z| <= p1
>}
>
>        - Sylvie
>
>-
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>

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

End of fractint-digest V1 #73
*****************************