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fractint-digest       Sunday, February 15 1998       Volume 01 : Number 109




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

Date: Sat, 14 Feb 1998 01:19:07 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) Palette editing

>  Personally, I don't have any problems with the Fractint palette editor. The
>only actual bug I've seen in it is that when you open the palette window a
>couple of the colors change to white until you close it. It's slightly
>irritating, but not enough to really require a major revision, IMO.

Those are used to draw the GUI. You wouldn't want to set a range of dim
colors and lose the editor window in it, would you? <g> You can change
what colors are blanked: move the selection boxes to two colors of your
choice and hit 'v', the X-ed out colors go there. The previously covered
colors are uncovered. I do this a lot, since I often have a range of
gradations start somewhere and end on the last color, so I put them
further back on the bottom row for instance so I can see the last color or
two easily.

- --
    .*.  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: Sat, 14 Feb 1998 01:27:01 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) FEIGENBAUM's constant: HELP ME

The constant shows up as alimit. Mark the bifurcations r1, r2, r3, r4...

Then (r3-r2)/(r2-r1) is not f, nor is (r4-r3)/(r3-r2), but the sequence
a1 = (r3-r2)/(r2-r1), a2 = (r4-r3)/(r3-r2), a3 =... is a convergent
sqeuence with limit 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: Sat, 14 Feb 1998 02:01:57 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) orgform

Paul Derbyshire wrote:
>
> Do you realize what you've just done? You just spammed a 500K binary on the
> Fractint list. I got a warning notice and hassles from my e-mail provider.

> Don't post binaries on the Fractint list!
>
> BTW, I don't care if that formula file has the world's best formulas, even
> a *second formula with Herman rings*, I'm deleting it unread... too much of
> a bother to download the freaking thing and unpack it and everything.
>
> 500K!

That's all? <vbg>

> Sheesh.
Well then, it seems I was the only one that had no problems with the
attachment, at least none that I can remember.  I had no glitches other
than the usual random "can't connect to the server right now."  Must be
because the server here runs OpenVMS and has the power to handle stuff
like that.  Or perhaps that's due to the $20,000 yearly fee... <g>
(minus scholarships) Not that I'm going to endorse it, I'm just saying
that it didn't affect me.

Of course, this means I have to WORK here to continue this excellent
service after I graduate!

Oops, I lied... There was ONE problem.  Unzipping it made all the
formula names in ALL CAPS and thus useless on XFractint.  Just shows how
much difference there is between DOS and Linux. :)

Can we consider this topic closed now, except for a possible rebuttal?

Justin K.
- --
Justin A. Kolodziej
** THIS SPACE FOR RENT ???-???? **
Justin Kolodziej is [e-mail]
Marquette University is www.mu.edu

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

Date: Sat, 14 Feb 1998 04:20:20 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) orgform

OpenVMS??


Dear God in heaven.


I know where you can find a great free, optimizing COBOL compiler!

:P

ObFractint: Anyone ever tried to do a fractal with COBOL, Fortrash,
Pascrash, or Intercal?







Didn't think so. <g>






- --
    .*.  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: Sat, 14 Feb 1998 08:08:34 -0800
From: "Mike or Linda Allison" <[e-mail]>
Subject: (fractint) Partobat fix

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

Thanks,
Linda
([e-mail])  NO SPAM!
http://www.geocities.com/~gumbycat (last update: 02-13-98)
http://www.fortunecity.com//tattooine/stephenson/5/abpf.html (last update:
02-13-98)
http://www.toptown.com/innercircle/gumbycat/index.html (NEW! 02-01-98)



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

Date: Sat, 14 Feb 1998 12:37:34 EST
From: [e-mail]
Subject: (fractint) Graphics bug

  I had to download a VESA 2.0 driver (Scitech Display Doctor) a while back,
and when I try to run Fractint in 800x600x256 mode with it running, the image
all gets rendered near the top of the screen and wraps back to the top when it
gets about a fourth of the way down the screen. Needless to say, this does NOT
look very much like the Mandelbrot set. Does anyone know any way to fix this
problem? (If there's another driver I can use that's free/shareware, I won't
complain. That "Please register" message that SDD pops up is VERY annoying.)

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Date: Sat, 14 Feb 1998 13:13:12 -0500
From: Les St Clair <[e-mail]>
Subject: (fractint) 3D transformations

Hi all,

There's a couple of interesting features built into Fractint which seem t=
o
be sadly negelcted these days.
I'm referring to the "3D transform" and "3D overlay" options. =

I dug out a selection of my old favourites and placed them on a new page =
at
my fractal web site:

http://ourworld.compuserve.com/homepages/Les_StClair/

Why not drop by and take a look?

Has anyone else got any Fractint 3D transforms or overlays that they'd li=
ke
to share?

Here's a couple of my examples (I'll apologize now for anyone who gets
these pars with the dreaded "=3D3D" disease, as this will be especially
confusing since the "3D=3Dyes" bits are supposed to be there!)

BTW, it's best to render the sets using the stated resolution (1024x768).=


cheers, Les

L3DT_01            { ; image for L3DT_01_3d    LStC [use 1024x768] t=3D01=
m46s
                     ; Les St Clair [e-mail]  1996
                     ; t=3Dtime using 486DX2-66 and video SF7 (1024x768)
  reset=3D1930 type=3Dformula formulafile=3D3d_trans.par formulaname=3Dle=
sfrm13
  function=3Dsqrt/log passes=3D1
  center-mag=3D0.933602/0.439651/0.4265727/1/35 params=3D-4/1/-3/1 float=3D=
y
  maxiter=3D1000 inside=3Dzmag outside=3Datan savename=3Dl3dt_01.gif
  colors=3D5B0<8>zz0<12>eL2dH2bE2`A3aA3<19>u8Bw7Cw8Cv8Dv9E<12>zCmzCmzCm<2=
>YX\
  c<6>7qw<20>P4VQ1TS4U<9>r_f<8>Uq1Xq2_q4<8>40B<6>50H00E<2>A8TEHaIQj3Yqbe_=
F\
  YI0L0<3>yrB<4>z00<6>Gk0<2>ns1zz0<4>z66<7>Y0L<4>zAz<9>6IJ<7>zzP<7>B8S<6>=
5\
  rz<12>9IR<16>5u0<8>5G0
  }

L3DT_01_3d         { ; "Pinnacle"              LStC [use 1024x768] t=3D01=
m34s
                     ; Les St Clair [e-mail]  1996
                     ; t=3Dtime using 486DX2-66 and video SF7 (1024x768)
  3d=3Dyes filename=3Dl3dt_01.gif scalexyz=3D130/240 roughness=3D255
  waterline=3D0 filltype=3D1 ambient=3D20 rotation=3D70/20/20 perspective=
=3D0
  xyshift=3D-3/28 savename=3Dpinnacle.gif
  }


L3DT_14            { ; image for L3DT_14_3d    LStC [use 1024x768] t=3D01=
m20s
                     ; Les St Clair [e-mail]  1996
                     ; t=3Dtime using 486DX2-66 and video SF7 (1024x768)
  reset=3D1930 type=3Dformula formulafile=3D3d_trans.par =

  formulaname=3Dbj-lesfrm13-002 function=3Dconj/sqr/cosh/log
  center-mag=3D0.59042/0.40678/1.173709/1/17.5 params=3D4/4.9/1/0.9
  float=3Dy potential=3D255/200/0 savename=3Dl3dt_14.gif
  colors=3D0FK0GE<36>2WN2WN1XO<38>D94D83D72E61F61G62H63000I64<20>d1Me1Ng0=
Oi0\
  P<4>r0U<31>402<31>rZU<16>F78<30>zzZxxY<16>0CC<8>0FD cyclerange=3D0/255
  }

L3DT_14_3D         { ; "Wild Orchid"           LStC [use 1024x768] t=3D00=
m24s
                     ; Les St Clair [e-mail]  1996
                     ; t=3Dtime using 486DX2-66 and video SF7 (1024x768)
                     ; based on Brian E.Jones formula BJ-LESFRM13-004
  3d=3Dyes filename=3Dl3dt_14.gif sphere=3Dy latitude=3D-90/90 longitude=3D=
180/0
  radius=3D200 scalexyz=3D90/200 roughness=3D500 waterline=3D0 ambient=3D=
20
  perspective=3D0 xyshift=3D0/3 cyclerange=3D0/255 savename=3Dorchid.gif
  }


FRM:Lesfrm13 {; Les St Clair, 1996
  z =3D pixel =

  x =3D fn1(z) , y =3D fn2(z):
  x =3D x*p1*pi
  y =3D y*p2*pi =

  z =3D x/y
  |z| <=3D 4
}

FRM:BJ-Lesfrm13-002 {; Modified Les St Clair formula "Lesfrm13" =

  z =3D pixel =

  x =3D fn1(z) , y =3D fn2(z):
  x =3D x*p1*pi
  y =3D y*p2*pi =

  z =3D fn4(x/fn3(y))
  |z| <=3D 4
}


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

Date: Sat, 14 Feb 1998 12:17:34 -0600
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) orgform

Paul,

 - ObFractint: Anyone ever tried to do a fractal with COBOL, Fortrash,
 - Pascrash, or Intercal?

I know of at least one (serious) fractal program written using Delphi.
It's not out yet, though.

I think your editorializing is not really necessary.

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

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

Date: Sat, 14 Feb 1998 12:24:59 -0600
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) 3D transformations

Les,

 - There's a couple of interesting features built into Fractint which seem to
 - be sadly negelcted these days.
 - I'm referring to the "3D transform" and "3D overlay" options.

I played around with them while exploring what FractInt could do, but I
have never been terribly thrilled with my results.  The rotation axes seem
awkward to deal with, and the polygons are not always drawn in the correct
order, leading to overlap  in some cases.  The necessity of using POT files
for smooth landscapes (smooth is a must for me) eliminates the possibility
of using most fractal types, as well as deep zooms.

The images on your page are nice, though.

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

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

Date: Sat, 14 Feb 1998 12:34:55 -0600
From: Bob Margolis <[e-mail]>
Subject: Re: (fractint) 3D transformations

Les St Clair wrote:
>
>
> There's a couple of interesting features built into Fractint which seem to
> be sadly negelcted these days.
> I'm referring to the "3D transform" and "3D overlay" options.

Hi Team Fractals;

Les' message reminds me that two years ago our famous leader, Tim
Wegner, came out with the 2nd Ed. of Image Lab which taught how to use
the image processing programs Fractint, POV-Ray, Polyray, Piclab, Image
Alchemy, and other programs. Another tome, Ray Tracing Creations (2nd
ed., 1994), by Chris Young and Drew Wells, went to great depth in
showing how to use POV-Ray's many features.

Would it be feasible to combine the features from some of the above
mentioned programs in Fractint 20? I believe they would enhance
Fractint's 3D options, especially if they're all combined into one
program.

Any thoughts, Tim and company?

Bob Margolis

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

Date: Sat, 14 Feb 1998 10:54:44 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) 3D transformations

Les...

Those pars looked kinda funny to me....they referred to a gif file....???????

Angela

>L3DT_01            { ; image for L3DT_01_3d    LStC [use 1024x768] t=01m46s
>                     ; Les St Clair [e-mail]  1996
>                     ; t=time using 486DX2-66 and video SF7 (1024x768)
>  reset=1930 type=formula formulafile=3d_trans.par formulaname=lesfrm13
>  function=sqrt/log passes=1
>  center-mag=0.933602/0.439651/0.4265727/1/35 params=-4/1/-3/1 float=y
>  maxiter=1000 inside=zmag outside=atan savename=l3dt_01.gif
>  colors=5B0<8>zz0<12>eL2dH2bE2`A3aA3<19>u8Bw7Cw8Cv8Dv9E<12>zCmzCmzCm<2>YX\
>  c<6>7qw<20>P4VQ1TS4U<9>r_f<8>Uq1Xq2_q4<8>40B<6>50H00E<2>A8TEHaIQj3Yqbe_F\
>  YI0L0<3>yrB<4>z00<6>Gk0<2>ns1zz0<4>z66<7>Y0L<4>zAz<9>6IJ<7>zzP<7>B8S<6>5\
>  rz<12>9IR<16>5u0<8>5G0
>  }
>
>L3DT_01_3d         { ; "Pinnacle"              LStC [use 1024x768] t=01m34s
>                     ; Les St Clair [e-mail]  1996
>                     ; t=time using 486DX2-66 and video SF7 (1024x768)
>  3d=yes filename=l3dt_01.gif scalexyz=130/240 roughness=255
>  waterline=0 filltype=1 ambient=20 rotation=70/20/20 perspective=0
>  xyshift=-3/28 savename=pinnacle.gif
>  }
>
>
>L3DT_14            { ; image for L3DT_14_3d    LStC [use 1024x768] t=01m20s
>                     ; Les St Clair [e-mail]  1996
>                     ; t=time using 486DX2-66 and video SF7 (1024x768)
>  reset=1930 type=formula formulafile=3d_trans.par
>  formulaname=bj-lesfrm13-002 function=conj/sqr/cosh/log
>  center-mag=0.59042/0.40678/1.173709/1/17.5 params=4/4.9/1/0.9
>  float=y potential=255/200/0 savename=l3dt_14.gif
>  colors=0FK0GE<36>2WN2WN1XO<38>D94D83D72E61F61G62H63000I64<20>d1Me1Ng0Oi0\
>  P<4>r0U<31>402<31>rZU<16>F78<30>zzZxxY<16>0CC<8>0FD cyclerange=0/255
>  }
>
>L3DT_14_3D         { ; "Wild Orchid"           LStC [use 1024x768] t=00m24s
>                     ; Les St Clair [e-mail]  1996
>                     ; t=time using 486DX2-66 and video SF7 (1024x768)
>                     ; based on Brian E.Jones formula BJ-LESFRM13-004
>  3d=yes filename=l3dt_14.gif sphere=y latitude=-90/90 longitude=180/0
>  radius=200 scalexyz=90/200 roughness=500 waterline=0 ambient=20
>  perspective=0 xyshift=0/3 cyclerange=0/255 savename=orchid.gif
>  }
>
>
>FRM:Lesfrm13 {; Les St Clair, 1996
>  z = pixel
>  x = fn1(z) , y = fn2(z):
>  x = x*p1*pi
>  y = y*p2*pi
>  z = x/y
>  |z| <= 4
>}
>
>FRM:BJ-Lesfrm13-002 {; Modified Les St Clair formula "Lesfrm13"
>  z = pixel
>  x = fn1(z) , y = fn2(z):
>  x = x*p1*pi
>  y = y*p2*pi
>  z = fn4(x/fn3(y))
>  |z| <= 4
>}
>
>
>-
>------------------------------------------------------------
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>Post Message:   [e-mail]
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>
>

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

Date: Sat, 14 Feb 1998 10:48:08 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) Re: dead languages and fractals

comment {
At 04:20 AM 2/14/98 -0500, Paul Derbyshire wrote:
>...
>ObFractint: Anyone ever tried to do a fractal with COBOL, Fortrash,
>Pascrash, or Intercal?

Oh ya.  Back in the dark ages (1986), I frac'd in whatever I had access to,
including Fortramp, Pascow, and BASICK.  Hey, algorithms is algorithms.
I know some are easier to write in and some run faster, but they *all* work!

I even did fractals in "zebra stripe" mode on monochome monitors.
Mandelbrot did *his* first rendition of the z^2 set on one of those clunky
IBM cylinder-head printers.  (I know, most of you are asking "a *what*?"
The characters are machined in rows on a spinning cylinder that spans
the page, with character selection done by a horizontal array of hammers
synchronized to the cylinder's rotation.  The beast weighed about the
same as a VW Bug).  Even the best of us are sometimes forced to
make do with suboptimal solutions.

Here's another gravijul (warning: it's kinda slooooow...)
}

gj19               { ; "Reflex" - (c) Mark "Bud" Christenson 2/13/98
  reset=1930 type=formula formulafile=budz.frm formulaname=gravijul
  function=atanh/atanh/atan center-mag=0/0/0.06
  params=0.95/0/0.07/0/2.95/0 float=y maxiter=151
  inside=200 outside=atan
  colors=000<15>000zzz<10>zzTzzQzzP<2>zwJzvHytH<5>wkCwjBwhBwgB<18>mJ8mI8lG\

7kE6<10>`3H_2JY2KX1MW1N<9>G0fF0hF0i<11>75x66z77z<13>PPzQQzRRzSTzTUzUWz<1
\
  1>hpzirzktzmuz<6>xyzzzzzzz<104>zzz
  }



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

Date: Sat, 14 Feb 1998 11:09:16 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) 3D transformations

Oh wow!!!!  That sure stuck a chord with me!!!

1.  Is Tim's book still in print??  I've wanted to learn povray

2.  I just bought Bryce 3D with the objective of mapping some of my
fractals onto sphere's and such ......(gmta or a coincidence)......so am
VERY interested in a raytrace/fractal combo program (drooooooooooool)

In wandering around the fractal loop and reading about raytrace, I've come
across the idea that the two are related....yes???

3.  Are there lessons somewhere about how to use the 3d features in
Fractint? I'd love to be able to make images like those at Les' site. Is it
hard? I need VERY step by step instructions......documentation usually just
baffles me since I'm not familiar with the lingo for the most part.

Angela

>
>Hi Team Fractals;
>
>Les' message reminds me that two years ago our famous leader, Tim
>Wegner, came out with the 2nd Ed. of Image Lab which taught how to use
>the image processing programs Fractint, POV-Ray, Polyray, Piclab, Image
>Alchemy, and other programs. Another tome, Ray Tracing Creations (2nd
>ed., 1994), by Chris Young and Drew Wells, went to great depth in
>showing how to use POV-Ray's many features.
>
>Would it be feasible to combine the features from some of the above
>mentioned programs in Fractint 20? I believe they would enhance
>Fractint's 3D options, especially if they're all combined into one
>program.
>
>Any thoughts, Tim and company?
>
>Bob Margolis


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

Date: Sat, 14 Feb 1998 14:15:35 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) 3D transformations

At 11:09 AM 2/14/98 -0800, you wrote:


>1.  Is Tim's book still in print??  I've wanted to learn povray

I doubt it, but I recently found a copy at a second-hand bookseller -- it's
very good; I'd say grab it, if you see it. The documentation/tutorial for
POV-RAY, which may be downloaded at http://povray.org/ is excellent, as is
the raytracer; also the newsgroup comp.graphics.rendering.raytracing is
very helpful.


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Date: Sat, 14 Feb 1998 14:34:26 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: Re: (fractint) 3D transformations

arg, that should have been http://www.povray.org/
sorry, sorry, i used to work as a copyeditor; i guess this is my
subconscious' revenge for that experience


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Date: Sat, 14 Feb 1998 14:44:35 -0500
From: "Brian E. Jones" <[e-mail]>
Subject: Re: (fractint) 3D transformations

Hi Les,

Nice set of 3D images!

BTW, "Astral Plane" and "Curly Fractint" look suprisingly familiar<vbg>!

Brian
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Date: Sat, 14 Feb 1998 13:46:27 -0600
From: Bob Margolis <[e-mail]>
Subject: Re: (fractint) 3D transformations

Wizzle wrote:
>
> Oh wow!!!!  That sure stuck a chord with me!!!
>
> 1.  Is Tim's book still in print??  I've wanted to learn povray

Actually, I have the first and second editions of the books I mentioned
in my prior message as well as the first and second editions of Fractal
Creations by Fractalmeister Wegner and Bert Tyler. The latter is the
Fractint "bible." Unfortunately none of these is in print, but sometimes
can be found through book dealers selling remainders, such as Edward R.
Hamilton bookseller, Falls Village, CT 06031-5000.

I would suggest first of taking a run over to www.amazon.com and do a
search for Image Lab and see what terms they have for getting
the book. They will try to find a secondhand source where they can
obtain a book for you. I've been a longtime customer of both Hamilton
and Amazon and am highly pleased with both.

Good luck in your hunt.

Bob Margolis

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Date: Sat, 14 Feb 1998 14:46:42 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Understatement

Hi all,

I have a new web site at:

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

Much more about this on Monday!<g>

Lee

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Date: Sat, 14 Feb 1998 15:16:15 -0500 (EST)
From: [e-mail] (Michael Traynor)
Subject: Re: (fractint) Understatement

Lee writes:

>I have a new web site at:
>
>http://fractal.mta.ca/fractals/skinner/skinner.htm
>
>Much more about this on Monday!<g>

He left out the important info that there are vast numbers of amazing
images, a whole cd-rom's worth, with all the pars and frms necessary.
Especially good are the images under 4tent, 4astm, 4asml, and 4fender (I
found it a breath-taking experience viewing these in quick succession at
1024x768).  If you wait to hear more on monday before checking it out, you
will regret your slowness.

Les is far too modest in his announcement.

One minor note, the URL for the 4les5i.par file is incorrect on the site
(where it is given as 4Les5i.par).  Easy to handle though.


Run, don't walk!


- --
Mike Traynor

People who like this sort of thing will find this the sort of thing they like.
    Abraham Lincoln

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Date: Sat, 14 Feb 1998 15:28:00 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) 3D transformations

Wizzle asked:

> Those pars looked kinda funny to me....they referred to a gif file....???????

Yes. 3D works by reading in a GIF file, interpreting colors as
heights, and writing to the screen after doing a 3D transformation.

Tim


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Date: Sat, 14 Feb 1998 13:15:45 -0600
From: Bob Margolis <[e-mail]>
Subject: Re: (fractint) 3D transformations

Wizzle wrote:
>
> Oh wow!!!!  That sure stuck a chord with me!!!
>
> 1.  Is Tim's book still in print??  I've wanted to learn povray

Actually, I have the first and second editions of the books I mentioned
in my prior message as well as the first and second editions of Fractal
Creations by Fractalmeister Wegner and Bert Tyler. The latter is the
Fractint "bible." Unfortunately none of these is in print, but sometimes
can be found through book dealers selling remainders, such as Edward R.
Hamilton bookseller, Falls Village, CT 06031-5000.

I would suggest first of taking a run over to www.amazon.com and do a
search for Fractal Creations and see what terms they have for getting
the book. They will try to find a secondhand source where they can
obtain a book for you. I've been a longtime customer of both Hamilton
and Amazon and am highly pleased with both.

Good luck in your hunt.

Bob Margolis


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Date: Sat, 14 Feb 1998 15:28:00 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: (fractint) 3D transformations

Bob asked:

> Would it be feasible to combine the features from some of the above
> mentioned programs in Fractint 20? I believe they would enhance
> Fractint's 3D options, especially if they're all combined into one
> program.

I wrote Fractint's 3D capabilities from first principles when I knew
absolutely nothing about it. I stopped when I learned just enough to
get it working. For a while there was one other developer who
worked on it with me, but with this exception, no other developer has
ever tackled it, and I have never returned to 3D because of all the
other Fractint interests I have.

POV-Ray has a height field capability that works much better than
Fractint's 3D. A height field is an array of heights rather than
colors. Fractint's 3D capability can be thought of as converting an
image to a height field and manipulating it in three dimensions. You
can create a fractal in Fractint and transform it to 3D in POV-Ray.
This works extraordinarily well. The downside is that learning ray
tracing just to do this one thing presents a steep learning curve
most folks won't attempt.

I have no plans to personally work more on Fractint's 3D. Note that
the 3D feature is a post process that doesn't really need Fractint; a
separate program would work just as well. Thus someone could program
this without having to wrestle with all fractint's legacy code.
Folks, take that as a challenge!

I have added Julibrot-like 3D objects to POV-Ray. I highly
recommend this capability to folks here. It is worth learning how
to use POV-Ray just to render 3D fractals. Both quaternion and
hypercomplex fractals are possible. POV-Ray uses an arnbitrary
slicing plane to reduce 4D to 3D; fractint is limited to slicing
along an axis plane.

Here is a case where Fractint could be enhanced. The 3D
Julibrot fractals should be tied to 2D fractals, so you can use 2D
fractal generation to explore for good 3D fractals. The current depth
modulation (coloring pixels according to virtual distance from the
viewer) is limiting. It would not be too hard to color pixels using
angle to a light source, as is done with Fractint's 3D.

I WILL return to the Julibrots eventually, though I think this is
less important than adding truecolor. In fact, 3D can *use* truecolor
to good effect.

Finally, remeber, any brave person is welcome to dive in and try
these things <g!> The 3D source is mostly in one file. It's not too
hard to understand. Much of what is needed is an interactive user
interface.

Tim


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Date: Sun, 15 Feb 1998 00:28:37 +0200
From: Cuneyt Ozdas <[e-mail]>
Subject: (fractint) Hello. (and MathMax

Hi,
I have just subscribed tot he forum. Hello to all.
Since all of you are involved with the math-visual concepts I want to
announce a plug-in for 3D Studio MAX called MathMAX. If you are a MAX
user please download it at
http://www.compugraf.com/corecomp.shtml and send me your comments on the
plug-in. Formulas are appreciated also.

Thanks
Cuneyt Ozdas


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Date: Sat, 14 Feb 1998 16:01:30 -0800
From: "Jim sellers" <[e-mail]>
Subject: (fractint) Progam Language

I have wondered for some time now what language Fractint is written in.
I have only worked in QuickBasic 4.5 and I see very little simularity.
I would really like to know.
Thank You.
Jim Sellers


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Date: Sat, 14 Feb 1998 22:09:47 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) Progam Language

Jim sellers wrote:
>
> I have wondered for some time now what language Fractint is written in.
> I have only worked in QuickBasic 4.5 and I see very little simularity.
> I would really like to know.

It's called "C".  Why, I don't know; perhaps "A" and "B" were bogus?
However, it's the standard programming language these days, and you're
right: it looks NOTHING like BASIC.  Mostly, it has structure :-)

Justin K.
- --
Justin A. Kolodziej
Why pay for an OS when you can get a clearly superior one for free?
Justin Kolodziej is [e-mail]
Marquette University is www.mu.edu

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Date: Sun, 15 Feb 1998 01:24:34 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) 3D transformations

>arg, that should have been http://www.povray.org/
>sorry, sorry, i used to work as a copyeditor; i guess this is my
>subconscious' revenge for that experience

Note: this address seems to behave strangely; sometimes it works
andsometimes it hangs any browser I've tried. I suspect maybe the machine
that hosts the web site is not entirely stable. Does anyone know of any
mirrors, or if themachine or software have been repaired/improved?


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Date: Sun, 15 Feb 1998 02:02:36 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: (fractint) Crash!

The PAR attached below seems to hang Fractint 19.6 a short way into the
fourth pass using guessing at 1024x768x256. At this point, the image
ceases to make progress and Fractint stops responding to such keys as x,
tab, and esc. It becomes necessary to kill the DOS box. I had it saving
partially complete versions of this image, using savetime=10; when I
loaded the most recent autosave it computed for about five minutes, then
hung again at the same exact spot...


hangs_1            { ; Hangs Fractint 19.6 a short way into fourth pass at
                     ; 1024x768x256.
  reset=1960 type=mandel
  center-mag=-1.74929071258239148183/7.80960353818782e-7/2.734146e+016
  params=0/0 float=y maxiter=16384 inside=0 logmap=2275
  colors=000<55>KA0KA0LA0MB0<51>yT0zU0zU1zV2<30>zmdznezogzphzqj<10>zzz<6>z\
  ciz_fzZf<26>z2Lz0Kx0K<18>A0K<37>Umz
  }


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

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Date: Sun, 15 Feb 1998 02:26:59 -0800
From: Peter Jakubowicz <[e-mail]>
Subject: (fractint) Avogadro's number

Is there any significance to blowing up the M-set by Avogadro's number
other than for the fun of it?


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Date: Sun, 15 Feb 1998 02:27:44 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) Avogadro's number

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

haven't the foggiest.


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    `*'  Send any and all mail with attachments to the hotmail address please.
Paul Derbyshire [e-mail] [e-mail]

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End of fractint-digest V1 #109
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