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fractint-digest       Saturday, October 10 1998       Volume 01 : Number 312




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

Date: Fri, 9 Oct 1998 15:05:11 -0700 (PDT)
From: Ken Childress <[e-mail]>
Subject: Re: (fractint) Re: [fractal-art] cost of images

>
> In a message dated 10/9/98 1:44:48 PM Eastern Daylight Time,
> [e-mail] writes:
>
> << The best way I know to do
>  that is to use slides for photographs for underwater photographs, and
>  go from digital to a print for digital images. >>
>
> Hi there...
>
> Which brings to mind the digital camera.

Which I'll admit has great potential, but ...

> My brother is bringing it over tonight.
> It produces jpg and he claims that to get prints on paper all one needs to do
> is deliver them to the right service agency.
> Appearently the files aren't huge as he sent me a few shots of the of the
> mountains last week while on vacation. They seemed to be at
> 1280x768...downloaded fast
> and looked very very good!

I don't want to start a digital vs. film war, so I'll just make one
comment.  For a great many uses, digital cameras are a great tool.  For
my uses, only the $10000+ cameras can approach the quality I want in
digital.


Ken...






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Date: Fri, 9 Oct 1998 15:06:41 -0700 (PDT)
From: Ken Childress <[e-mail]>
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

Steve,

> Have i missed a fractint up-date???  The highest videomode I have
> [in 19.6.... disk ram ] is 2048x2048 or 2048x1536.
> How are you getting 4500x3000 and 6000x4000?

Go to Linda Allison's tutorial pages for instructions.

http://www.geocities.com/Paris/5519/mirror.html


Ken...



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Date: Fri, 9 Oct 1998 18:41:19 -0400
From: Sylvie Gallet <[e-mail]>
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

Paul N. Lee wrote:

>> The final image generated by MAKEMIG is a "multi-image" GIF file calle=
d
>> FRACTMIG.GIF.  In case you have other software that can't handle
>> multi-image GIF files, MAKEMIG includes a final (but commented out) ca=
ll
>> to SIMPLGIF, a companion program that reads a GIF file that may contai=
n
>> little tricks like multiple images and creates a simple GIF from it. =

>> Fair warning: SIMPLGIF needs room to build a composite image while it
>> works, and it does that using a temporary disk file equal to the size =
of
>> the final image - and a 64Kx64K GIF image requires a 4GB temporary dis=
k
>> file!

  Simplgif also has some serious bugs that made it fail on about half of
the simple GIFs I tried to create these last months (two 13x13xSF7 and
several 4x4xSF7).  Now, I use "Image Arithmetic" by Richard van Paasen:

    www:   http://huizen.dds.nl/~buddha/
    email: [e-mail]

  Cheers,

        - Sylvie

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

Date: Fri, 9 Oct 1998 18:44:29 EDT
From: [e-mail]
Subject: Re: (fractint) 5 point star coloring methods

In a message dated 10/9/98 4:26:18 PM Eastern Daylight Time,
[e-mail] writes:

<<
 Fresh from the, "Just because you can doesn't mean that you should" files,
 :-) here are some formulas built around 5 point stars >>

Kerry,

Now you've done it.  You've completely blown my mind.  Oh well, I wasn't using
it anyway.

Bill

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

Date: Fri, 9 Oct 1998 20:31:12 -0300
From: "Fliguer, Miguel" <[e-mail]>
Subject: (fractint) This PAR has been shot !

This one reminds me of Sonny Corleone after the ambush
in "The Godfather" ;-)

Uzi_sprayed   { ; by Miguel Fliguer - 1998
                     ; Palette by Jacco Burger
                     ; uses my PRUEBA_000
                     ; uses floating point
  reset=1960 type=formula formulafile=miguel.frm
  formulaname=Prueba_000 function=sin/sqr
  center-mag=1.33324/0.563791/0.06272244/1/-125 params=1/0/1/0 float=y
  potential=250/200/0 decomp=256
  colors=000112<15>325436534423<8>wuu<11>YJ9VF4SD4<5>421445<9>`THdWJfXJ<4>\
  n`IoaIn`I<16>Y54X33Y65<13>skYuo`un`<38>bAI000<37>J7aK8bL8cM8dM8fN8gO9i<1\
  0>O9aO9`O9`O9`<9>K9XJ8XJ8WI8V<26>112000000<10>112
  }

frm:Prueba_000 {;
z=fn1(pixel), c=fn2(pixel):
z=fn2(p1/z^4) - fn1(p2/z^2) + c
|z|<64
}


Regards,
Miguel Fliguer - Buenos Aires, Argentina
[e-mail]

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

Date: Fri, 09 Oct 1998 19:45:08 -0400
From: Paul Derbyshire <[e-mail]>
Subject: (fractint) FOTN

There hasn't been a FOTN update in 2months. What gives? :(
- --
   .*.  "Clouds are not spheres, mountains are not cones, coastlines are not
- -()  <  circles, and bark is not smooth, nor does lightning travel in a
   `*'  straight line."    -------------------------------------------------
        -- B. Mandelbrot  |http://surf.to/pgd.net
_____________________ ____|________     Paul Derbyshire     [e-mail]
Programmer & Humanist|ICQ: 10423848|

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

Date: Fri, 9 Oct 1998 20:24:15 EDT
From: [e-mail]
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

In a message dated 10/9/98 6:44:54 PM Eastern Daylight Time,
[e-mail] writes:

<<
   Simplgif also has some serious bugs that made it fail on about half of
 the simple GIFs I tried to create these last months (two 13x13xSF7 and
 several 4x4xSF7).  Now, I use "Image Arithmetic" by Richard van Paasen:
  >>
Sylvie,

According to the Image Arithmetic site, GIF  format is no longer supported by
the program.  How are you able to use it to create those large images?

Bill

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

Date: Fri, 9 Oct 1998 20:24:15 EDT
From: [e-mail]
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

In a message dated 10/9/98 6:44:54 PM Eastern Daylight Time,
[e-mail] writes:

<<
   Simplgif also has some serious bugs that made it fail on about half of
 the simple GIFs I tried to create these last months (two 13x13xSF7 and
 several 4x4xSF7).  Now, I use "Image Arithmetic" by Richard van Paasen:
  >>
Sylvie,

According to the Image Arithmetic site, GIF  format is no longer supported by
the program.  How are you able to use it to create those large images?

Bill

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

Date: Fri, 9 Oct 1998 21:37:43 -0600
From: "Tim Wegner" <[e-mail]>
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

Sylvie wrote:

>   Simplgif also has some serious bugs that made it fail on about half of
> the simple GIFs I tried to create these last months (two 13x13xSF7 and
> several 4x4xSF7).  Now, I use "Image Arithmetic" by Richard van Paasen:

Hmmm, I thought we had gotten the bugs out of simplgif. Were you using the
version with the new decoder/encoder (I would think you were, since you keep
up pretty well.)

I'd be interested in an example that breaks it, though it might be hard for me to
handle the disk space.

Tim


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

Date: Fri, 09 Oct 1998 19:47:32 -0700
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) 5 point star coloring methods

At 01:19 PM 10/9/98 -0700, Kerry wrote:
>Fresh from the, "Just because you can doesn't mean that you should" files,
>:-) here are some formulas built around 5 point stars

Well, obviously you should have!
Your latest formula has lots of potential, but that's what we've
come to expect.  You're spoiling us, Kerry!  :-)))

If they weren't so hideously underpaid, you should have been a
mathematics professor.


Bud

##########

snm01               { ; (c) Bud 1998 (9 Oct)
                     ; abusing the M-set with Kerry Mitchell's new formula
  reset=1960 type=formula formulafile=km-5star.par
  formulaname=starnear_man passes=1 center-mag=-0.92544/0/0.56/1/-90
  params=0.25/0/0.7/36 float=y maxiter=100 decomp=256 periodicity=0
  colors=J5H<43>zzc<22>z32z00y00<54>20000000000K<28>FHVFIVGJWGJX<2>ILYIMYJ\
  NZJN_<7>NRgORhOShPTi<5>SZlT_mU`nVanWbo<3>_fqagrbhsditfju<4>psxrtytvyvwyx\
  yzzzz<30>W2WV0VU0U<13>G0GF0FG1FH2GI3G cyclerange=0/255
  }


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

Date: Fri, 9 Oct 1998 20:10:03 -0700 (MST)
From: Kerry Mitchell <[e-mail]>
Subject: Re: (fractint) 5 point star coloring methods

On Fri, 9 Oct 1998, Mark Christenson wrote:

> If they weren't so hideously underpaid, you should have been a
> mathematics professor.

I am, and we are.  :-)

Kerry


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

Date: Fri, 09 Oct 1998 20:38:30 -0700
From: kathy roth <[e-mail]>
Subject: (fractint) Halloween pars

Halloween is coming.... I was trying for
some reason to turn Damien Jones'
dmj-mand-triangle into a Julia (not that
successful) but got the first one here.
It's kind of, errr..disturbing.

Halloween1         { ; kathy roth 1998
                     ; droz map
  reset=1960 type=formula formulafile=koffset.frm
  formulaname=jul-Triangle
  center-mag=-0.291482/0.983216/0.7942555
params=0.5/1/1/0/0/0 float=y
  outside=real invert=1/0/0
  colors=000mUR<9>W00G00<14>kkk<13>W00\
000000<14>xHB<15>T55G00<15>zWG<30>G0\
  0WGG<14>zW0<15>751C92<14>v`4<14>KF3HD\
3G00<30>zWW<15>I11<15>xkf<4>oXT
  }

Halloween2         { ; kathy roth 1998
                     ; droz map
  reset=1960 type=formula formulafile=koffset.frm
  formulaname=jul-Triangle
center-mag=1.28209/0.646343/4.616079
  params=-0.5/-1/100/0/0/0 float=y outside=real
  colors=000dGG<7>I11<15>xkf<15>W00G\
00<14>kkk<13>W00000000<14>xHB<15>T55G0\
  0<15>zWG<30>G00WGG<14>zW0<15>75\
1C92<14>v`4<14>KF3HD3G00<30>zWW<6>gII
  }

Halloween3         { ; kathy roth 1998
                     ; modified Wizzle map
  reset=1960 type=formula formulafile=kdmj-j~1.frm
  formulaname=gravistalks2 function=tan/sqr/atanh
  center-mag=0.0285419/1.05154/1.446057
params=1/0/0.04/150/8/30 float=y outside=summ
  colors=000wAP<28>C0Bhrz<28>60Azpa<27>LG6\
JE4KDU<28>98FUsz<28>6CFf7K<28>G1\
  DKHU<28>98Fb4I<28>G1D000<13>000
  }


frm:jul-Triangle{ ; variant of Damien Jones dmj-Mand-Triangle
        ;modified by Kathy Roth
 ; original idea and formula from L. Kerry Mitchell
 ; modified for total continuity by dmj, 9-8-97

 IF (real(p3) == 0)  ; Invalid value for color scale.
   p3 = 75 + flip(imag(p3)) ; Substitute a default value.
 ENDIF
 IF (imag(p3) == 0)  ; Invalid value for bailout.
   p3 = (0,128) + real(p3) ; Substitute a default value.
 ENDIF
 sum = 0    ; Running total.
 done = 1   ; Iteration counter.
 ac = cabs(pixel)  ; Absolute value of pixel (precalc).
 il2 = 1/log(2.0)  ; Inverse log 2 (precalc).
 lp = log(log(imag(p3)))  ; log(log bailout) (precalc).
 f = -1    ; No fractional iteration yet.

 z = pixel, c =p1:  ; Mandelbrot initialization.
 az2 = |z|   ; Save absolute value of first term.
 z = sqr(z) + c   ; Mandelbrot calculation.

 lowbound = abs(az2 - ac) ; Calculate lower bound for sum.
 sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
     ; Ratio between bounds.

 done = done + 1   ; Done one more iteration.
 IF (az2 > imag(p3))  ; Point exceeds bailout.
   IF (f < 0)   ; First time; let it go again.
     f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
     oldsum = sum / done  ; Save the average ratio so far.
   ELSE    ; Second time past bailout.
     sum = sum / done  ; Average ratio.
     f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
     z = f * real(p3)  ; Apply color scale.
     z = z - 255*trunc(z/real(255)) ; Wrap at 255.
     z = z - done - 5  ; Return value.
     done = -1   ; Set flag to force an exit.
   ENDIF
 ENDIF

 done >= 0   ; Continue if the flag is clear.
}





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

Date: Fri, 9 Oct 1998 23:34:43 EDT
From: [e-mail]
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

>Ken writes:
>One thing to keep in mind that I've learned from experience and
>research, is that you really need about 200 DPI of image data to get a
>good quality ink jet print or photograph made from a digital file.  A
>monitor just can't deliver that kind of detail, and photographic prints
>can't give you much more than that.  I generally use an image of
>1600x2000 for printing an 8x10 image.  This has always yielded good
>results for me.

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

Date: Fri, 09 Oct 1998 20:45:46 -0700
From: Mark Christenson <[e-mail]>
Subject: Re: (fractint) 5 point star coloring methods

At 08:10 PM 10/9/98 -0700, Kerry Mitchell wrote:
>On Fri, 9 Oct 1998, Mark Christenson wrote:
>
>> If they weren't so hideously underpaid, you should have been a
>> mathematics professor.
>
>I am, and we are.  :-)
>
>Kerry

Sorry, man.  I think it's been two or three years since
I read your bio data.

And of course I meant *formulae*, not formula.


Bud


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

Date: Fri, 09 Oct 1998 23:01:08 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) Halloween pars

Kathy,

Try these on for size. :-)  I haven't actually tested the Julia versions,
but they should work.  If they don't, scream and I'll fix 'em. :)

- -----8<----- begin dmj-tri.frm

dmj-Phnx-Triangle { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(real(p2))        ; Absolute value of pixel (precalc).
    il2 = 1/log(2.0)        ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = real(p2)        ; Phoenix initialization.
    y = 0, m = imag(p2):
    znew = sqr(z) + c + m*y        ; Phoenix calculation.
    y = z
    z = znew

    az2 = cabs(znew-c)
    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3))        ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

dmj-MndZ-Triangle { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p2) == 0 && imag(p2) == 0) ; Invalid value for exponent.
      p2 = 3            ; Substitute a default value.
    ENDIF
    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(pixel)        ; Absolute value of pixel (precalc).
    il2 = 1/log(p2)            ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = pixel:        ; Mandelbrot initialization.
    z = z^p2 + c            ; Mandelbrot calculation.

    az2 = cabs(z-c)            ; Save absolute value of first term.
    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3))        ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 10; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-9) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

dmj-MndZ-Triangl-I { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p2) == 0 && imag(p2) == 0) ; Invalid value for exponent.
      p2 = 3            ; Substitute a default value.
    ENDIF
    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(pixel)        ; Absolute value of pixel (precalc).
    il2 = 1/log(p2)            ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = pixel:        ; Mandelbrot initialization.
    z = z^p2 + c            ; Mandelbrot calculation.

    az2 = cabs(z-c)            ; Save absolute value of first term.
    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3) || done > maxit-2)    ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 10; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-9) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

dmj-Jul-Triangle(XAXIS) { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(pixel)        ; Absolute value of pixel (precalc).
    il2 = 1/log(2.0)        ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = p2:        ; Mandelbrot initialization.
    az2 = |z|            ; Save absolute value of first term.
    z = sqr(z) + c            ; Mandelbrot calculation.

    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3))        ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

dmj-Jul-Triangl-I(XAXIS) { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(pixel)        ; Absolute value of pixel (precalc).
    il2 = 1/log(2.0)        ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = p2:        ; Mandelbrot initialization.
    az2 = |z|            ; Save absolute value of first term.
    z = sqr(z) + c            ; Mandelbrot calculation.

    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3) || done > maxit-2)    ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

- -----8<----- end dmj-tri.frm

Damien M. Jones   \\
[e-mail]  \\  Fractalus Galleries & Info:
                    \\  http://www.fractalus.com/

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Date: Fri, 09 Oct 1998 23:13:49 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) dmj-tri.frm

Almost forgot: dmj-Phnx-Triangle is a Phoenix version, use 0.56667,-0.5 for
p2 to get the default Phoenix fractal.

Damien M. Jones   \\
[e-mail]  \\  Fractalus Galleries & Info:
                    \\  http://www.fractalus.com/

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Date: Fri, 09 Oct 1998 21:40:06 -0700
From: kathy roth <[e-mail]>
Subject: (fractint) Seeing Stars

> The "starbail" formulas are set up to stop iterating either when the
> orbit comes into a star or when it leaves a star.
>
  These are totally great.  The classic Mandelbrot
bailout is a circle but it doesn't mean the image has
circles in it.  I don't know why this one actually has
stars in it but it's beautiful and I have to make some time
to look at this further.


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Date: Sat, 10 Oct 1998 01:17:44
From: "Lavondyss" <[e-mail]>
Subject: (fractint) new virus

Hey fractineers out there. Just some inside information for all.
There is a space filler virus on the loose that does some weird stuff.

A lot of people are infected and don't even know it yet. It's name is
"Win95 CIH spacefiller". Please search for it on the Net and find out how
to get rid of it if you have it and prevent it from infecting your system.

Safe rendering
Lavondyss




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Date: Sat, 10 Oct 1998 11:33:04 +0100
From: "Les St Clair" <[e-mail]>
Subject: Re: (fractint) September par collection

Hi Ken,

>WOW!!!  I have arrived.  :-)
>
>I made one of the thumbnail images on Les's page.

At the end of each month I par-to-bat the whole collection at 1600x1200 and make
a set of thumbnails too (to check that the the par file has no bugs). I then
have my own "mini contest" where I pick my favourite three images to display on
the web page (CompuServe site only). It's great fun and truly difficult to
narrow it down to just three favourites!

cheers, Les


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Date: Sat, 10 Oct 1998 08:54:01 -0400
From: JoWeber <[e-mail]>
Subject: (fractint) MotW 2

Hi,
today I've updated page 14 with the Mandel of the Week 2(cheers Peter :-)=
).

Enjoy --Jo--

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

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Date: Sat, 10 Oct 1998 09:24:58 -0400
From: Sylvie Gallet <[e-mail]>
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

Hi Tim,

>> Hmmm, I thought we had gotten the bugs out of simplgif. Were you using=

>> the version with the new decoder/encoder (I would think you were, sinc=
e
>> you keep  up pretty well.)

  I don't remember if I was using the new version of simplgif.exe or the
developers version of Fractint with a large disk-video mode.

>> I'd be interested in an example that breaks it, though it might be har=
d
>> for me to handle the disk space.

  I haven't kept the fractmig and simplgif images but I'll try to find so=
me
examples.

  Cheers,

        - Sylvie


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Date: Sat, 10 Oct 1998 09:24:59 -0400
From: Sylvie Gallet <[e-mail]>
Subject: Re: Sv: (fractint) Re: [fractal-art] cost of images/videomode?

Hi Bill,

>> According to the Image Arithmetic site, GIF  format is no longer
>> supported by the program.  How are you able to use it to create those
>> large images? =


  I convert all of the pieces into PCX and I use PNG format for the outpu=
t
image.

  Cheers,

        - Sylvie

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Date: Sat, 10 Oct 1998 12:48:51 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) dmj-tri.frm

Afternoon, folks...

I should know better than to post new formulas late at night.  I really
should.  :-)  The triangle-inequality Julia formulas I posted last night
are not quite correct.  They will produce images which are interesting, but
are slightly incorrect.  The two formulas below are the correct versions; I
have named them differently so that if you have already used last night's
formulas, you will still be able to reproduce them.

- -----8<----- begin dmj-tri.frm addendum

dmj-Jul-Triangle2(XAXIS) { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(p2)            ; Absolute value of pixel (precalc).
    il2 = 1/log(2.0)        ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = p2:        ; Mandelbrot initialization.
    az2 = |z|            ; Save absolute value of first term.
    z = sqr(z) + c            ; Mandelbrot calculation.

    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3))        ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

dmj-Jul-Triangl2-I(XAXIS) { ; outside = real: triangle inequality average
    ; original idea and formula from L. Kerry Mitchell
    ; modified for total continuity by dmj

    IF (real(p3) == 0)        ; Invalid value for color scale.
      p3 = 75 + flip(imag(p3))    ; Substitute a default value.
    ENDIF
    IF (imag(p3) == 0)        ; Invalid value for bailout.
      p3 = (0,128) + real(p3)    ; Substitute a default value.
    ENDIF
    sum = 0                ; Running total.
    done = 1            ; Iteration counter.
    ac = cabs(p2)            ; Absolute value of pixel (precalc).
    il2 = 1/log(2.0)        ; Inverse log 2 (precalc).
    lp = log(log(imag(p3)))        ; log(log bailout) (precalc).
    f = -1                ; No fractional iteration yet.

    z = pixel, c = p2:        ; Mandelbrot initialization.
    az2 = |z|            ; Save absolute value of first term.
    z = sqr(z) + c            ; Mandelbrot calculation.

    lowbound = abs(az2 - ac)    ; Calculate lower bound for sum.
    sum = sum + (cabs(z) - lowbound) / (az2+ac - lowbound)
                    ; Ratio between bounds.

    done = done + 1            ; Done one more iteration.
    IF (az2 > imag(p3) || done > maxit-2)    ; Point exceeds bailout.
      IF (f < 0)            ; First time; let it go again.
        f = il2*lp - il2*log(log(cabs(z))) + 2; Fractional iteration.
        oldsum = sum / done        ; Save the average ratio so far.
      ELSE                ; Second time past bailout.
        sum = sum / done        ; Average ratio.
        f = oldsum + (sum-oldsum) * (f-1) ; Interpolate sum.
        z = f * real(p3)        ; Apply color scale.
        z = z - 255*trunc(z/real(255)) ; Wrap at 255.
        z = z - done - 5        ; Return value.
        done = -1            ; Set flag to force an exit.
      ENDIF
    ENDIF

    done >= 0            ; Continue if the flag is clear.
}

- -----8<----- end dmj-tri.frm addendum

Damien M. Jones   \\
[e-mail]  \\  Fractalus Galleries & Info:
                    \\  http://www.fractalus.com/

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Date: Sat, 10 Oct 1998 19:48:17 +0100
From: "Kim Bach Petersen" <[e-mail]>
Subject: (fractint) Boundary tracing

I've been doing some zooms where I found it relevant to use boundary tracing
as drawing method. It made me wonder if it could be improved in the
following way:

Instead of doing the left-to-right calculation as "primary search", I think
it could be neat to do a rectangular search. That is left-to-right at the
top, then down along the right border, then right-to-left at the bottum,
then closing the rectangle by doing the left border upwards.

This would (at least for the mandelbrots I just did) fill all the larger
areas first, and thus it would appaer to draw quicker - whether it acctually
would, I don't know, but I got a hunch, that it would.

Any comments?

Kind regards, Kim :-)



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Date: Sat, 10 Oct 1998 15:45:17 -0400
From: Ron Barnett <[e-mail]>
Subject: (fractint) Web site and software update

I have just updated Truemand with some enhancements to the orbit trapping
methods and some bug fixes. The new fractal of the week was created using
the new orbit trapping methods. Some additional new images using the
methods are in True Color Gallery 2.
Truemand is free, creates 24 bit images, and uses fractint color maps. It
can also use fractint formula files with some minor modifications. If you
have a laptop with only 256 colors, it will generate a "true color" image
with no banding using the Stuckii error diffusion algrorithm.

Ron Barnett
Hidden Dimension
http://www.hiddendimension.com

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Date: Sat, 10 Oct 1998 16:15:28 -0600
From: "Tim Wegner" <[e-mail]>
Subject: (fractint) simplgif

>   I don't remember if I was using the new version of simplgif.exe or the
> developers version of Fractint with a large disk-video mode.

This is a very important point. We completely redid both the GIF reading and
writing of Simplgif. I believe the one at my FTP site is the new one. It is at

ftp://ftp.phoenix.net/pub/USERS/twegner/simplgif.zip

I really want to know if this version has any bugs. I haven't heard of any bad
cases with the new simplgif.

Tim


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End of fractint-digest V1 #312
******************************