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fractint-digest       Tuesday, January 20 1998       Volume 01 : Number 084




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

Date: Mon, 19 Jan 1998 22:47:46 -0700 (MST)
From: Kerry Mitchell <[e-mail]>
Subject: Re: (fractint) Monday - From Paul Carlson

On Mon, 19 Jan 1998, Wizzle wrote:

> Paul asked me to post.....
> *******************************
> I think Kerry's extensions to the bubble method are very
> ingenious, especially the swirls.  Seeing her formulas
                                            ^^^

she's a he. :-)

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



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

Date: Tue, 20 Jan 1998 18:43:58 +1300
From: "Morgan L. Owens" <[e-mail]>
Subject: (fractint) More problems between DOS and W95...

At 11:14 19/01/98 -0500, Blake Hyde wrote:
>[Someone else...]
>:Also, I had no TSR running when my colormaps got messed up.
>
>
>I had windows95 running... does that count as a TSR? Oh, well. There's only
>one word needed: Microsoft. Does anybody know how to get a pure dos boot on
>a w95 machine?
>
I'm also wondering about this. My colour-map loads go without a hitch, but
what I find is if Fractint is drawing an image (in full-screen mode of
course) and something else happens in one of my other active programs (I'm
often playing a music CD at the time) - THINGS happen. Like Fractint for
some reason becomes convinced that it has finished and stops, complete with
sound effect. Or sometimes it confines all its drawing to a thin band at
the top of the screen. Switching to a text mode screen (such as TAB) can
seriously mangle the image.

I could go on but I'm too depressed now...

Morgan L. Owens


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Date: Tue, 20 Jan 1998 18:43:58 +1300
From: "Morgan L. Owens" <[e-mail]>
Subject: (fractint) More problems between DOS and W95...

At 11:14 19/01/98 -0500, Blake Hyde wrote:
>[Someone else...]
>:Also, I had no TSR running when my colormaps got messed up.
>
>
>I had windows95 running... does that count as a TSR? Oh, well. There's only
>one word needed: Microsoft. Does anybody know how to get a pure dos boot on
>a w95 machine?
>
I'm also wondering about this. My colour-map loads go without a hitch, but
what I find is if Fractint is drawing an image (in full-screen mode of
course) and something else happens in one of my other active programs (I'm
often playing a music CD at the time) - THINGS happen. Like Fractint for
some reason becomes convinced that it has finished and stops, complete with
sound effect. Or sometimes it confines all its drawing to a thin band at
the top of the screen. Switching to a text mode screen (such as TAB) can
seriously mangle the image.

I could go on but I'm too depressed now...

Morgan L. Owens


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

Date: Tue, 20 Jan 1998 10:22:49 +1
From: "J.P. Louvet" <[e-mail]>
Subject: Re: (fractint) On topic please

le 18 Jan 98 a 13:27, Tim Wegner ecrivait (Tim Wegner wrote) :

> Folks,
>
> A gentle reminder, we have another glut of off topic or personal
> messages on the list.
>
> Please make sure before posting that your message is of GENERAL list
> interest, on topic, and not so personal it is only of interest to the
> person you are answering. The message traffic is high, but that's OK if
> you don't have to sort through many messages to find one on fractals.
>
> Tim
>
I fully agree. I wrote, some days ago, that when I have read all these
messages I have no time to write anything for this list. I read carefully
all the messages but I can't spend excessive time to do this, and I thing
that traffic on this list might be divided by a factor of 2 with a few
discipline !

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

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

Date: Tue, 20 Jan 1998 23:46:07 +1300
From: "Morgan L. Owens" <[e-mail]>
Subject: (fractint) Faster formulae - pointers for optimisation requested.

Lately I've been working on a number of related formulae (at last count
1080 but projected to rise a fair bit higher - I really do think formula
inclusion would be a great idea). Many of them are fairly grim, but they do
surprise me now and then.

The thing is, the expressions I'm writing tend to get a bit long-winded
(and one of my main objectives is to shorten them as much as possible) and
that slows them down. Even if I get them as short as I can I'll still be
wanting to tweak them for speed. Does anyone have any suggestions as to
what sort of things can be done to speed things up at the source level?
Does sqr(z) work any faster (or slower) than z*z, for example? Does
(0,1)*real work faster than flip(real)?

I already try to precompute as much as possible before entering the loop.
Another suggested extension to formulae: a section which is run through
once _per image_, where needed constants can be set up in advance, rather
than redoing them every orbit. It's a small thing but it would save
millions of ops. Or is this carried through by the parser already?

I'm nowhere near releasing a beta-test version of this collection, and I
don't want to prerelease too much for fear of old versions drifting about
out there. But here's one. If anyone can see any egregious blunders on my
part of any kind, please get in touch with me so's I can see about
correcting them.
(Actually, while I was checking this post before sending it, I found an
egregious blunder of my own: "bailout" being erroneously set. Fortunately
correcting it didn't change the image. See, I do make mistakes!)

Morgan L. Owens

Worshipful         { ; Something to go up behind the altar
  reset=1960 type=formula formulafile=chby9.frm formulaname=ca03
  function=abs passes=b
  center-mag=0.0420974/-0.0420974/0.8313408/1/-45
  params=2/-0.5/1/0 float=y maxiter=1023 inside=255 outside=atan
  colors=000430<4>000000100<76>yV0zW0zW0zX0<29>zz0<15>zzz<15>zz0<30>zX0zW0\
  zW0yW0<70>530
  }

frm:Ca03{; = (2(a+2)xCa(2)-(2a+1)Ca(1))/3
        {; Prerelease version 20/01/1998
a=p1
b=2*a*(a+1)
c=2*(a+2)/3
t=real(p2),bailout=4,z=pixel:
x=real(z),y=imag(z)
xx=sqr(x),yy=sqr(y)
Tx=fn1(b*x*(c*xx-1))
Ty=fn1(b*y*(c*yy-1))
x=x-t*Ty,y=y+t*Tx
z=x+flip(y)
|z|<=bailout}



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

Date: Tue, 20 Jan 1998 23:45:40 +1100
From: Lynne Kelly <[e-mail]>
Subject: (fractint) Fractal Music

> From: Nature102 <[e-mail]>
> Subject: (fractint) Fractal music?

>   I just had a chance to hear some fractal-generated
music. The stuff sounds
> really cool. Kind of mystical. You probably won't hear any
CDs of it, but it's
> cool. Does anyone know if there's any chance that Fractint
is going to be able
> to generate fractal music in the near future? For that
matter, does anyone
> know HOW to generate fractal music?

There is a wonderful chapter called "Chaos in A Major" in
the book by A. K. Dewdney, "The Tinkertop Computer",
published by W. H. Freeman and Company, 1993 which gives a
very simple algorithm for producing Chaotic Music:

input x and a
repeat
    x<- x*(a-x)
   step<-int(12*x/a)
   tone<- int(220*exp(ln(2)*step/12)
   play tone
until keypressed

This is based on the Logistic equation, but I guess any
fractal algorithm could be used as long as the outcome was
scaled. So when a is above 3.57 you enter the chaotic
region.

I found it worked fine. 220 is middle A on the scale. Didn't
sound fine, but worked fine.

He then goes on to talk about refinements. A human touch to
make it less chaotic and more musical?

He gives the musical score for the Fuguette vegetarienne,
which I had transposed and performed by a group of good
musicians. It was recorded (with permission) on a CD I
co-authored a number of years ago on Chaos and Fractals for
secondary students. It had something, that's the best I can
say. But if you want music, I'd recommend almost any other
CD!

cheers,

Lynne

- --
Lynne Kelly          email: [e-mail]

Head, Virtual School for the Gifted
http://www.vsg.edu.au
Co-ordinator Gifted and Talented Program, MLC
http://www.mlckew.edu.au



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

Date: Tue, 20 Jan 1998 07:59:29 -0500
From: Lee Skinner <[e-mail]>
Subject: (fractint) Lee's Truecol

Kathy,

>>  It gives an error message for the colors <<

What error message are you getting and on what image????

>>and then runs it in the Fractint default palette with an odd sort
of dithering, which I assumed is how the Truecolor is rendered
in the 256 color palette. <<

They should be generated at the highest resolution you have.  At 1280x102=
4,
the dithering is hardly detectable.  At 1600x1200, it looks like highcolo=
r.
At resolutions lower than 1024x768, the dithering can be very annoying.
But once converted to PNG, even thumbnails are pleasing - I converted PNG=

thumbnails to JPG thumbnails since most cannot view PNG thumbnails with
their browsers.

Lee

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Date: Tue, 20 Jan 1998 08:39:12 -0500
From: George Martin <[e-mail]>
Subject: (fractint) Faster formulae - pointers for optimisation requested.

Morgan,

>
frm:Ca03{; = (2(a+2)xCa(2)-(2a+1)Ca(1))/3
        {; Prerelease version 20/01/1998
<

Only one "{" per formula is allowed! You need to delete the { in the second
line of this formula, or Fractint won't find it.

George Martin

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

Date: Tue, 20 Jan 1998 08:19:34 -0700
From: Roland Silver <[e-mail]>
Subject: Re: (fractint) Fractal of the Night, Jan 18

Jay,
One comment on
>http://home.san.rr.com/jayrhill//FotN/FotN18.html
- --not on the picture, but the text. My web browser (Navigator 4.0.4) shows
it as essentially illegible black lettering on a blue background.

And re Lost Head, it's perhaps a miracle that M[2] (M-set generated by
z^2+c) is (topologically) connected. M[3] isn't, and most others Iove
looked at aren't. I'm not surprised that you've found an isolated feature
in what's essentially M[4].


- -- Rollo Silver <[e-mail]>




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Date: Tue, 20 Jan 1998 09:11:31 -0800
From: "Jay Hill" <[e-mail]>
Subject: Re: (fractint) Fractal of the Night, Jan 18

Hi Roland,
Thanks for the heads up about black on blue. I use Netscape 3 in WinBlows 95
and Micro$oft Internet Explorer 3.  Looked OK - not great but OK there. I've
change both Jan 18 and 19 to lighter background.

Would you explain how Lost Head is M[4]?  Thanks for the remarks.
I guess you are saying that less connected is more 'artful' and connected
is more 'technical' - rigorous, restrained.  A student whom I tutored on a
fractal science fair project tried to use the Mandelbrot set to 'model'
most any shape. He would choose something to make a picture of, a
tree, galaxy, what ever.  As you can guess, he had great difficulty with
the connectivity constraint. Controlling the image was the big challenge.
But he surprised me a few times. Then, alas, he discovered
iterated systems IF and played with that a little. His project
turned out quite good.

To create art with fractal tools, we need, as completely as possible,
total freedom to change the image in directions we want.  That means
not only more parameters (the classic MSet has 5: c is 2, zoom factor
is 1, pan location is 2), but the parameters must be orthogonal and
scaled reasonably.  Orthogonal so changing x and y change different
things. Imagine flying a jet fighter using twisting knobs and reading
dials in volts controlling servos.

So when I create a Fractal of the Night, I am part explorer and part
creator. I know, if I want a Julia set with a certain pattern type, the I
need to dial in coordinates based on patterns in another coordinate
system - the associated Mandelbrot set.  There are other coordinate
systems which could be devised which would control the image in
yet other ways. As we get more experience with some of the new
formula presented recently, we will want to display parameterizations
of these as an aid to navigation in our image spaces.

A simple example is one where an artist is exploring Julia set like
images and finding star patterns. She wants more points which, when
we plot her Julia sets into a map (Mandelbrot set) we find the stars
she already has are very near centers of buds whose periods are the
number of points in the stars. So now dialing in any number is easy,
just write a new formula for the MSet and locate the buds.  Well that
is easier said than done if she wants 17 points and simple filaments.
Now we need to switch to yet another display showing only period
17 locations.

This all sounds a lot like a technician, not artists. But even an oil
and canvas artists has to have certain tools to get effects she wants.
As the tools we develop get easier to use, we can more easily return
to being artists.

Jay

- ----------
> From: Roland Silver <[e-mail]>
> To: [e-mail]
> Subject: Re: (fractint) Fractal of the Night, Jan 18
> Date: Tuesday, January 20, 1998 7:19 AM
>
> Jay,
> One comment on
> >http://home.san.rr.com/jayrhill//FotN/FotN18.html
> --not on the picture, but the text. My web browser (Navigator 4.0.4) shows
> it as essentially illegible black lettering on a blue background.
>
> And re Lost Head, it's perhaps a miracle that M[2] (M-set generated by
> z^2+c) is (topologically) connected. M[3] isn't, and most others Iove
> looked at aren't. I'm not surprised that you've found an isolated feature
> in what's essentially M[4].
>
>
> -- Rollo Silver <[e-mail]>
>


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Date: Tue, 20 Jan 1998 09:29:49 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) v19.6 troubles

Since I heard the warning shot about the conversion to PNG,
I downloaded and am assessing v19.6 ( *remember folks, Web
browsers do NOT support PNG!* ).  I have thus far encountered
the following bugs:

1) After loading an image using the preview window option,
subsequent images (full screen or not) are shifted to the right,
starting at the left-hand edge of the previous, cropped image.
A similar problem existed (and may still exist - I haven't checked
yet) in v19.3 when loading .pars (the image is cropped to the
last preview window), but loading an image from its .gif file reliably
cleared the problem; this is no longer the case.

Why do I generate full-size images in preview mode?  As far as
I know it's the only way to produce images in aspect ratios other
than 4:3 (x/y), and 1:1 is very handy for excluding undesirable
image elements (zoom out on the 051597-002 .pars from my 1/17
post to see what I mean).

2) Until I resolve out the problems with v19.6, I am running it from
a subdirectory.  When I try to load certain .pars (.pars from the list,
including Carlson's, which require IF and ELSE support) from the
parent directory (where v19.3 still resides), I get a series of error
messages (some too fast to read) which indicate that the files
(forms/pars) can't be located/opened/loaded. This happens even
when I provide full paths (in the .par files) to the correct (.frm) files.

Any advice?  I would really appreciate a final, clean v19.6 before the
Fractint wizards eliminate .gif output.


Thanks, Bud


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Date: Tue, 20 Jan 1998 19:51:47 +1
From: "J.P. Louvet" <[e-mail]>
Subject: Re: (fractint) Lee's Truecolor PNG site

le 19 Jan 98 a 11:03, Rich Thomson ecrivait (Rich Thomson wrote) :

> alpha channel support.  Alpha channels bring a whole new dimension to
> image manipulation and I look forward to alpha channel support in
> fractint (someday) and the resulting fractal creations it will bring.

Can you explain me what is alpha channel ?

> is lossy because of JPEG, not TIFF).  BMP does have a compression scheme,
> but the compression scheme is not nearly as efficient as PNG, or even
> TIFF.
For what I know 24 bits BMP has no compression : it uses 3 bytes for each
pixel. 256 colors BMP _may_ have a succinct compression format wich is
RLE.

> It is my understanding that both the current release of Netscrape and
> Internet Exploder can display PNG files.

My experience is that neither Explorer 4 nor Nescape 4 support PNG, even
if I have read many times that they do.
>
> Nature102 wrote:
> > Only occasionally? .JPG is the most utterly annoying image file format
> > in existence. :-P
>
> JPEG was designed for a very specific task: storing still images
> captured from real-world sources such as cameras and image scanners. For
> that subject matter, it works well.  It is a poor format for figures,
> line drawings and clip-art because the prominence of sharp edges in the
> images give the JPEG representation a hard time.  It can work well for
> fractals, but not all of them.  Many fractals have a preponderence of
> sharp edges, the case for which JPEG is least suited. --

JPG is a good format for fractals (even with sharp edges) if you set to a
reasonable value the amount of loss (2 for Paintshop Pro, 95% for
Microsoft Photo Editor). It is more compact than PNG (in a ratio of 2
or better with my settings) and this is nice for web pages. Look at the
true color fractals p. 15 and 16 of my album.

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

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Date: Tue, 20 Jan 1998 11:08:15 -0800
From: Mark Christenson <[e-mail]>
Subject: (fractint) v19.6 troubles / correction

>2) Until I resolve ... the problems with v19.6, I am running it from
>a subdirectory.  When I try to load certain .pars...

* make that ANY .pars accessing .frms in the parent directory... *

>...
>I get a series of error
>messages ... which indicate that the files ...
>can't be located/opened/loaded. This happens even
>when I provide full paths (in the .par files) to the correct (.frm) files.


Bud


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Date: Tue, 20 Jan 1998 13:16:36 -0600
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) Lee's Truecolor PNG site

Jean-Pierre,

 - Can you explain me what is alpha channel ?

An alpha channel is an extra grey-scale channel stored along with an image,
which indicates which areas of the image are transparent (alpha channel is
black) or opaque (alpha channel is white).  Alpha channels are usually
stored as 8-bit values, which means you have a nice smooth range of
partially-transparent values between black and white.  Because you have
control over transparency on a per-pixel basis, it is easy to make some
parts of an image partially transparent, while leaving others alone.

None of this matters for a single image, but when you start compositing
images--putting them on top of each other--this becomes a very nice trick.
The "Julia Amalgam" picture in my gallery was done almost entirely by
manipulating the alpha channels of six Julia sets.  Rather than use *color*
for the iteration bands, I assigned all iterations in an image the same
color, and varied the *transparency* of the image by iteration.  I made
each Julia a different color and layered them all on top of each other.
You can view the image here:

    http://www.geocities.com/~fractalus/gallery1/pic12.htm

This is a fairly simple example, and I was just playing around and learning
how to use alpha channels in fractals when I made this picture.  Other than
as an example of possibilities with alpha blending, it's not that great. :)

 - 256 colors BMP _may_ have a succinct compression format wich is RLE.

RLE is optional for BMPs, but it's not widely supported and it's uncommon
to see it used.  (Not unheard of, just uncommon.)  It's also fairly weak,
as compression techniques go.

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: Tue, 20 Jan 1998 14:48:46 EST
From: Nature102 <[e-mail]>
Subject: Re: (fractint) Fractal music?

In a message dated 98-01-19 20:32:44 EST, [e-mail] writes:

<< Where did you hear the Factal music? Was it a downloadable midi, wav or
some other file? >>

  Umm... One of the links in the Fractint users gallery. I forget which one.

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Date: Tue, 20 Jan 1998 14:57:17 EST
From: Nature102 <[e-mail]>
Subject: Re: (fractint) Astrophysical Lunacy

In a message dated 98-01-19 22:52:43 EST, [e-mail] writes:

<< Bad: my life's disappearing into a fractal black hole. >>

  ::Blinks:: Life? What is this? :-P

  And your off-topic formula:

  GelatinousCube     { ; The monster from AD&D invades the MSet.
                     ; Nature Leseul
  reset=1960 type=mandel
  center-mag=-0.52706041835834050/+0.61952264705556860/3.606226e+010
  params=0/0 float=y maxiter=10000
  colors=000<34>000000010020<18>0U0<14>0C00A00B0<13>0S00U00U0<9>0K0UUUTTT<\
  2>LLL<2>SSSUUUVVV<5>gggjjjkkk<2>sss<10>XXXUUUTTT<2>LLL<2>SSSUUUVVV<5>ggg\
  jjjkkk<2>sss<15>000<85>000
  }

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Date: Tue, 20 Jan 1998 15:15:07 EST
From: Nature102 <[e-mail]>
Subject: Re: (fractint) Fractal Music

In a message dated 98-01-20 07:41:52 EST, [e-mail] writes:

<< There is a wonderful chapter called "Chaos in A Major" in
 the book by A. K. Dewdney, "The Tinkertop Computer",
 published by W. H. Freeman and Company, 1993 which gives a
 very simple algorithm for producing Chaotic Music:

 input x and a
 repeat
     x<- x*(a-x)
    step<-int(12*x/a)
    tone<- int(220*exp(ln(2)*step/12)
    play tone
 until keypressed

 This is based on the Logistic equation, but I guess any
 fractal algorithm could be used as long as the outcome was
 scaled. So when a is above 3.57 you enter the chaotic
 region. >>

  Hmm... I tried programming that algorithm in QBasic, but all I got was one
long tone. Not very chaotic. :-P ::Shrugs:: Maybe I programmed something
wrong. BTW, there's a parenthesis missing  on that line with the int and exp
and ln and stuff. I assume it's supposed to go at the end of the line, right?

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Date: Tue, 20 Jan 1998 16:06:07 -0500
From: "Blake Hyde" <[e-mail]>
Subject: Re: (fractint) blakes fractal chat room

:Fractal room disappeared. Didn't know how one properly leaves

    Alas, you came in on the tale end of my oh so stable ISP's DNS crash and
subsequent rebooting of the main server. Happy fractaling.

Blake Hyde ~ Casper ~ Novan Dragon
Homepage: www.connectu.net/bhyde
Email: [e-mail]


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Date: Tue, 20 Jan 1998 13:11:40 -0800
From: kathy roth <[e-mail]>
Subject: (fractint) Lee's Truecolor Fractals

Lee Skinner wrote
>>What error message are you getting and on what image????

I doubt that this has anything to do with your web site which
is probably working fine.  On all the images I have tried (5 or
6) it says "oops I couldn't understand the argument
colors = 000EHO<7>....." (quotes one line of color parameter)
(That one was from "Pahoehoe flowing")
Then if I hit enter it draws the image without problem in the
default palette.  It looks good in the higher resolutions and the
dithering effect is gone. I had the same problem with"Clouds Over
Shiprock" both from the web site and from Jay Hill's web site
(where he removed the =3D problems for that one and the Carlson
formulas.)
I have had persistent troubles with only a few of the .par and
.frm files over the past months and it  most often occurs with
the IF...ELSE formulas and seems separate from the =3D
problem.
Mark Christensen wrote:
>> When I try to load certain .pars (.pars from the list,
>>including Carlson's, which require IF and ELSE support) from the
>>parent directory (where v19.3 still resides), I get a series of error
>>messages (some too fast to read) which indicate that the files
>>(forms/pars) can't be located/opened/loaded. This happens even
>>when I provide full paths (in the .par files) to the correct (.frm)
files.

On only certain pars I get a variety of odd error messages
often quoting the color palette, which looks ok when I look
at it. On some formulas it says "oops cannot understand the
argument " z = pixel" or whatever when it looks like a normal
part of the formula.  Lately I am getting an error message
on most of Paul Carlson's formulas.  The par will start ok,
hunt for the formula and then give a msg. that it cannot
access the .frm in its location.  The location is the same as
the rest of the formulas.
I had assumed that I was doing something wrong
because I am a total computer novice and was reluctant
to take up the list time with it, but I have followed all the
posts on this. You copy from { to } as .par or .frm.,
it puts it in the same directory as Fractint and most
of them work ok .
   I am going to get some help from someone who
understands the paths and directories better than I do
but it looks to me like they're all in the same place.


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Date: Tue, 20 Jan 1998 16:47:57 EST
From: RBarn0001 <[e-mail]>
Subject: Re: (fractint) Triangle Inequality Coloring

Hi Peter,
I have implemented Sylvie's version of Kerry's triangle inequality method in
Truemand.
http://members.aol.com/RBarn0001

Ron

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Date: Tue, 20 Jan 1998 17:28:50 -0500
From: Gedeon Peteri <[e-mail]>
Subject: Re: (fractint) Lee's Truecolor Fractals

kathy roth wrote:

>  On all the images I have tried (5 or
> 6) it says "oops I couldn't understand the argument
> colors = 000EHO<7>....." (quotes one line of color parameter)

Exactly the same problem I ran into with Lee's image, and others. I
corrected it by editing the par in Notepad. I found that the end of the
line cited did not have a backslash. Also, make sure there are no double
spaced lines. I sometimes get them too, especially with Lee's postings.
When editing them out, one must take great care that nothing else is
deleted. Perhaps this is your problem too.
Gedeon


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Date: Tue, 20 Jan 1998 17:37:28 -0500 (EST)
From: Donald Archer <[e-mail]>
Subject: Re: (fractint) Fractal music?

><< Where did you hear the Factal music? Was it a downloadable midi, wav or
>some other file? >>
>
>  Umm... One of the links in the Fractint users gallery. I forget which one.

You can hear several fractal music pieces in MIDI format at
http://www.dorsai.org/~arch. Music is derived from the RGB values
of Fractint images and then sequenced.

Don


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Date: Tue, 20 Jan 1998 17:58:18 -0700
From: "Morgan L. Owens" <[e-mail]>
Subject: Re: (fractint) Astrophysical Lunacy

At 19:18 19/01/98 -0800, Mark Christenson wrote:
>Since I have joined this group, I have had mixed feelings about it.
>
>Bad: there's a lot of traffic (on- and off-topic).
>
This is certainly the busiest mailing list I subscribe to (and that is
_not_ an excuse to start a "What's your busiest mailing list?" topic.)

>Good: there's *so* much free data!
>
More than I can keep up with.

>
>Thanks to Morgan L. Owens for his 1/16 astrophysical formula post.
>Although I know the meaning of the formulae are seriously perverted
>by plugging in complex numbers, I can't complain about the results.
>
>Here are two .pars, one for the OT, the other purely gratuitous. Both
>of these are done at critical points; for ap-102 (which reminds me of
>"magnet" fractals I have seen/done) there are a whole lot of these
>around p1=1.5
>
Thank you. As I said in the post, those are some of my earliest formulae
that were worth anything. I see that both of your pars use jul1-138; I find
this the most productive as well, though the others do have their features
as well. What intrigues me is how different they look when using integer
code instead of floating point (now tell me, is there anyone out there
whose machine is _still_ faster with integer arithmetic?). I guess it's
something to do with the division.

I took your ap-102 par and sort of fiddled with it a bit. Alright, about
the only thing I didn't change was the 1.4586. The result is below.

Morgan L. Owens

Clown              { ; Well.... kinda.
  reset=1960 type=formula formulafile=astro.frm formulaname=jul1-138
  function=exp center-mag=-0.672217/0/0.7085708/1/90
  params=1.4586/0 float=y maxiter=1023 potential=255/300/0
  colors=00000z<29>22m22m22m22m22m<10>22m22m33m44m<44>xxyzzzzzz<93>zzzzzzz\
  yyzxx<59>z00dNCdNC
  }

frm:jul1-138{
z=pixel:
z=(1-sqr(p1))/sqr(1-p1*fn1(z)),
|z|<=4}




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Date: Wed, 21 Jan 1998 14:22:32 +1300
From: "Morgan L. Owens" <[e-mail]>
Subject: Re: (fractint) Faster formulae - pointers for optimisation requested.

At 08:39 20/01/98 -0500, George Martin wrote:
>Morgan,
>
>>
>frm:Ca03{; = (2(a+2)xCa(2)-(2a+1)Ca(1))/3
>        {; Prerelease version 20/01/1998
><
>
>Only one "{" per formula is allowed! You need to delete the { in the second
>line of this formula, or Fractint won't find it.
>
Oops, mea culpa! I added that line at the last minute - didn't think
carefully enough.

MLO



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Date: Tue, 20 Jan 1998 19:55:59 -0600
From: "Tim Wegner" <[e-mail]>
Subject: (fractint) CompuServe Web View

Let me preface this by saying that while I'm personally happy with
CompuServe, and have been a member for a decade, I'm not particularly
pushing folks to join CompuServe. (I do confess I find refering to
CompuServe as  "compu$erve" as hopelessly immature and banal, but
that's just my opinion :-))

CompuServe is moving to a Web view. Some of their facilities are
available to non-members, and some are not. At the moment, the
fractint files are publically viewable. (I am not all that familiar
with the web access to CompServe - I access it with an offline DOS
program).

Point your browser to:

http://www.csi.com/go_c.asp?PIN=GraphicsDev

Click on "preview this site for free". Then click on files,
and activate the pulldown list "choose a file section"
and select "fractint sources" or "fractint images".

You can also see message threads, but you can't post.

The reason I am mentioning this is that I was asked just today what
files are on CompuServe. Now you can find out directly.

Tim


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Date: Tue, 20 Jan 1998 18:42:05 -0800
From: Wizzle <[e-mail]>
Subject: (fractint) simplegif

I've looked at what I have in my Fractint directory and I appear to have a
1993 version of simplgif.exe.  Is there a newer release and where is it
available?  I checked at the Spanky site and didn't see it there for
download.

Thanks

Angela



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Date: Tue, 20 Jan 1998 20:48:21 -0600
From: "Paul N. Lee" <[e-mail]>
Subject: Re: (fractint) Lee's Truecolor PNG site

Rich Thomson wrote:
>
> It is my understanding that both the current release of
> Netscape and Internet Exploder can display PNG files.
>

PNG Live(tm) is a plugin for Netscape Navigator and Microsoft Internet
Explorer that allows you to see PNG (Portable Network Graphics) images
directly in your web browser.  The PNG image format represents the next
generation of image standards.  Better compression, higher resolution,
and multiple layers of transparency are just some of its benefits.
Download a copy of PNG Live for use with Windows 95, Windows NT, and
Power Macintosh platforms at:
     http://codelab.siegelgale.com/solutions/


Various inline plug-ins for Netscape browsers, under the following
platform:
     Macintosh 68K, PPC
     Windows 3.x
     Windows 95
     Windows NT
     OS/2
     IRIX
     Sun Solaris
     HP-UX
     OSF1
     AIX
     Linux
may be found by going to the following:

http://search.netscape.com/comprod/products/navigator/version_2.0/plugins/by_platform.html

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End of fractint-digest V1 #84
*****************************