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fractint-digest        Sunday, February 1 1998        Volume 01 : Number 095




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

Date: Sat, 31 Jan 1998 17:53:28 -0700 (MST)
From: Kerry Mitchell <[e-mail]>
Subject: (fractint) More Mandelbrot Fareys

A few days ago, I posted an article in response to a question about the
connections between the Farey sequence and the Mandelbrot set.  Since
then, I've found a few other connections, which I'll discuss here.

Recall that the Farey sequence is a way to order the fractions m/n, where
m and n are postive integers and have no common factors (like 1/2, 17/101,
etc.).  Each disk around the main cardioid of the Mandelbrot set is
tangent to the cardioid at the point corresponding to m/n turns, where 1
turn = 2 pi radians = 1 full circle.  Specifically, for the m/n disk, the
tangent point c is located at:

theta = m/n * 2 * pi radians,
r = (1 - cos(theta))/2,
x = r * cos(theta) + 0.25,
y = r * sin(theta),
c = x + i*y.

Also, the m/n disk has periodicity of n.

The sizes of the disks are also (approximately) determined by the Farey
number:  the radius of the disk (only the disk at -1 is a true circle, so
"radius" is used approximately) is

radius ~ sin (m/n * pi) / n^2.

For the period 2 circular disk at -1, m/n = 1/2, so the radius formula
gives sin(pi/2)/4 = 1/4.  Since this disk is a circle, the formula agrees
with the geometry exactly (the disk stretches from -0.75 to -1.25 on the
x-axis, so its diameter is 0.5 and its radius is 0.25).  (For the other
disks, the "center" is defined to be that point in the disk whose orbit
contains 0, and the "radius" is the distance from this "center" to the
tangent point.)  This simple formula also describes what happens near the
cusp.  As n (the period of the disk) increases, the disks get smaller.  In
the m=1 case (1/2, 1/3, 1/4, etc.), the size of the disk decreases with
n^3, which is why they seem to disappear into the cusp at 0.25.  Near
"large" disks, the surrounding disks also get smaller.  For example, look
near the 1/3 disk at the top of the cardioid.  On either side of it, from
2/5 on the left and 1/4 on the right, the disks get smaller as they lead
up to 1/3.  The m/n * pi factor is about the same, as m/n is approximately
1/3, but again the n^2 in the denominator causes the radius to go to zero
as n gets large.

It is well known that a disk of period n has n arms sprouting from the
branching Misiurewicz point near it.  The M-point for disk 1/2 is near
- -1.54, giving 2 arms, one continuing left out the -x axis to -2, and one
going right back into the disk.  The M-point near (-0.1,0.96) is
associated with the 1/3 disk, and has 3 arms.  These arms can be labelled
by starting with the one coming out of the disk as arm "0" and moving
clockwise around the M-point.  It appears that, for the m/n disk, the mth
arm is the arm that "sticks out" the most, or extends furthest from the
cardioid in a direction normal to the cardioid.  Also, those arms (0 -
n-1) whose number is a multiple of m seem to be larger than the others.
These effects can be seen using the attached parameter file.  There are
zooms on 8 of the period 17 disks around the main cardioid.  (17 was
chosen because it is prime, thus for m = 1 to 16, m/n is in lowest terms
and will have an associated disk.  The disks for m = 9 to 16 are on the
bottom of the cardioid, and are the same as 1 - 8, except flipped about
the x-axis.)  In each zoom the mth arm (starting with 0 coming out of the
disk and moving clockwise) sticks out the furthest, and the multiple-of-m
arms are in general larger than the others.


01/17              {
  reset=1960 type=mandel
  center-mag=+0.28304191732923840/+0.01068323248180676/548.4862
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

02/17              {
  reset=1960 type=mandel
  center-mag=+0.35091283306512950/+0.08639667670649509/265.7031
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

03/17              {
  reset=1960 type=mandel
  center-mag=+0.37974484578073720/+0.24930810808824060/163.3133
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

04/17              {
  reset=1960 type=mandel
  center-mag=+0.29774672803157720/+0.45834848313926780/112.3293
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

05/17              {
  reset=1960 type=mandel
  center-mag=+0.07990701154554589/+0.62192606843801480/92.56304
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

06/17              {
  reset=1960 type=mandel
  center-mag=-0.23302183394954850/+0.64975550683228160/88.32674
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

07/17              {
  reset=1960 type=mandel
  center-mag=-0.54242389972194240/+0.49703037233481000/83.44459
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

08/17              {
  reset=1960 type=mandel
  center-mag=-0.73617449966615810/+0.18747982995311780/93.70315
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

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


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

Date: Sat, 31 Jan 1998 17:53:28 -0700 (MST)
From: Kerry Mitchell <[e-mail]>
Subject: (fractint) More Mandelbrot Fareys

A few days ago, I posted an article in response to a question about the
connections between the Farey sequence and the Mandelbrot set.  Since
then, I've found a few other connections, which I'll discuss here.

Recall that the Farey sequence is a way to order the fractions m/n, where
m and n are postive integers and have no common factors (like 1/2, 17/101,
etc.).  Each disk around the main cardioid of the Mandelbrot set is
tangent to the cardioid at the point corresponding to m/n turns, where 1
turn = 2 pi radians = 1 full circle.  Specifically, for the m/n disk, the
tangent point c is located at:

theta = m/n * 2 * pi radians,
r = (1 - cos(theta))/2,
x = r * cos(theta) + 0.25,
y = r * sin(theta),
c = x + i*y.

Also, the m/n disk has periodicity of n.

The sizes of the disks are also (approximately) determined by the Farey
number:  the radius of the disk (only the disk at -1 is a true circle, so
"radius" is used approximately) is

radius ~ sin (m/n * pi) / n^2.

For the period 2 circular disk at -1, m/n = 1/2, so the radius formula
gives sin(pi/2)/4 = 1/4.  Since this disk is a circle, the formula agrees
with the geometry exactly (the disk stretches from -0.75 to -1.25 on the
x-axis, so its diameter is 0.5 and its radius is 0.25).  (For the other
disks, the "center" is defined to be that point in the disk whose orbit
contains 0, and the "radius" is the distance from this "center" to the
tangent point.)  This simple formula also describes what happens near the
cusp.  As n (the period of the disk) increases, the disks get smaller.  In
the m=1 case (1/2, 1/3, 1/4, etc.), the size of the disk decreases with
n^3, which is why they seem to disappear into the cusp at 0.25.  Near
"large" disks, the surrounding disks also get smaller.  For example, look
near the 1/3 disk at the top of the cardioid.  On either side of it, from
2/5 on the left and 1/4 on the right, the disks get smaller as they lead
up to 1/3.  The m/n * pi factor is about the same, as m/n is approximately
1/3, but again the n^2 in the denominator causes the radius to go to zero
as n gets large.

It is well known that a disk of period n has n arms sprouting from the
branching Misiurewicz point near it.  The M-point for disk 1/2 is near
- -1.54, giving 2 arms, one continuing left out the -x axis to -2, and one
going right back into the disk.  The M-point near (-0.1,0.96) is
associated with the 1/3 disk, and has 3 arms.  These arms can be labelled
by starting with the one coming out of the disk as arm "0" and moving
clockwise around the M-point.  It appears that, for the m/n disk, the mth
arm is the arm that "sticks out" the most, or extends furthest from the
cardioid in a direction normal to the cardioid.  Also, those arms (0 -
n-1) whose number is a multiple of m seem to be larger than the others.
These effects can be seen using the attached parameter file.  There are
zooms on 8 of the period 17 disks around the main cardioid.  (17 was
chosen because it is prime, thus for m = 1 to 16, m/n is in lowest terms
and will have an associated disk.  The disks for m = 9 to 16 are on the
bottom of the cardioid, and are the same as 1 - 8, except flipped about
the x-axis.)  In each zoom the mth arm (starting with 0 coming out of the
disk and moving clockwise) sticks out the furthest, and the multiple-of-m
arms are in general larger than the others.


01/17              {
  reset=1960 type=mandel
  center-mag=+0.28304191732923840/+0.01068323248180676/548.4862
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

02/17              {
  reset=1960 type=mandel
  center-mag=+0.35091283306512950/+0.08639667670649509/265.7031
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

03/17              {
  reset=1960 type=mandel
  center-mag=+0.37974484578073720/+0.24930810808824060/163.3133
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

04/17              {
  reset=1960 type=mandel
  center-mag=+0.29774672803157720/+0.45834848313926780/112.3293
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

05/17              {
  reset=1960 type=mandel
  center-mag=+0.07990701154554589/+0.62192606843801480/92.56304
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

06/17              {
  reset=1960 type=mandel
  center-mag=-0.23302183394954850/+0.64975550683228160/88.32674
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

07/17              {
  reset=1960 type=mandel
  center-mag=-0.54242389972194240/+0.49703037233481000/83.44459
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

08/17              {
  reset=1960 type=mandel
  center-mag=-0.73617449966615810/+0.18747982995311780/93.70315
  params=0/0 float=y maxiter=2000 inside=0 periodicity=0
  colors=000<40>x00z00z00<40>zy0zz0zz1<39>zzxzzzzzz<40>1zz0zz0yz<39>02z00z\
  00z<41>000 cyclerange=0/255
  }

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


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

Date: Sat, 31 Jan 1998 18:38:40 -0800
From: Wizzle <[e-mail]>
Subject: (fractint) Herman Ring Par

One last par from the January formulas

glitters           { ; from Paul Derbyshire's herman formulas
                     ; by wizzle 1998
  reset=1960 type=formula formulafile=*.frm formulaname=hring_j
  center-mag=+0.95723776910875570/+0.29022500000000010/87.35884/1/40
  params=1/0/1.1/0/0.001/0 float=y maxiter=256 inside=0 outside=real
  colors=000AkbAmc<25>255143122000000000000000<17>PjqRmtSpwUszTqw<16>23400\
  0000<4>000000001102<40>b0xc0zb0y<32>202000001<27>JGTKHUKHT<27>1110000000\
  00<3>000011032<25>9j`
  }


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

Date: Sun, 1 Feb 1998 14:37:35 +1100
From: Ben Leighton <[e-mail]>
Subject: (fractint) Fractal mathematics

Hi,
   The Mandelbrot fractal is Apparently infinitely complex and many people
spend a lot of processing time producing deep zooms. Is it possible to model
certian areas of the Mandelbrot (or other fractals) useing other equations
thus doing a kind of pseudozoom which draws fast? Maybe it would be like
zooming in on a sin curve in this case is there any easy way to draw a curve
segment useing some alternate formula?

                                                        :) Ben
Ben Leighton, [e-mail]

        All my statements are questions?


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

Date: Sat, 31 Jan 1998 20:07:07 -0800
From: Wizzle <[e-mail]>
Subject: (fractint) Really last pars

More herman thingummies for january (while it lasts)......all have more
than a hint of bordeaux colors

hermngrape         { ; from paul derbyshire's herman formulas
                     ; a julia by wizzle 1998
  reset=1960 type=formula formulafile=*.frm formulaname=hring_j
  center-mag=1.80092/-8.88178e-016/0.2590888
  params=-0.6443/0.8/3.75/0/0.001/0 float=y maxiter=256 inside=0
  outside=real
  colors=000U5F<3>K0A<16>ipw<9>K0S<10>zzm<22>L29<18>wwm<4>pmenkcmjblha<21>\
  N76M55N78<13>alqcru<15>00P<7>czu<24>0A0<3>IAA<21>wzo<19>K0C<4>V5IX6JZ7Ka\
  9LcAMfBN<6>wKU<10>X7H
  }

bordeaux_splash    { ; from paul derbyshire's herman formulas
                     ; a julia by wizzle 1998
  reset=1960 type=formula formulafile=*.frm formulaname=hring_j
  center-mag=3.43081/-2.22045e-016/1.061839
  params=-0.6443/0.8/3.75/0/0.001/0 float=y maxiter=256 inside=0
  outside=real
  colors=000gaW<17>N76M55N78<13>alqcru<15>00P<7>czu<24>0A0<3>IAA<21>wzo<19\
  >K0C<4>V5IX6JZ7Ka9LcAMfBN<6>wKU<15>K0A<16>ipw<9>K0S<10>zzm<22>L29<18>wwm\
  <4>pmenkcmjblha<2>icX
  }

lace_wine          { ; by wizzle 1998 with grngrape.map
                     ; from a paul derbyshire herman ring formula
  reset=1960 type=formula formulafile=*.frm formulaname=hring_j
  center-mag=2.06186/0.925056/0.1514232/1/-12.5
  params=-0.6676/0/4/1/0.001/0 float=y maxiter=16384
  inside=epsiloncross outside=real
  colors=000F1N<2>I1EK2AM4D<14>wdz<6>mww<10>0F0<15>0wk<15>0Kc<13>mzz<15>00\
  w<14>`0Wc0Ud3V<12>wrjxvkxsj<14>i9K<30>yxlzzmyym<14>WeZUdYSbWQ`V<12>0FA<1\
  5>czz<15>00w<10>D1Q
  }



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

Date: Sun, 1 Feb 1998 00:18:39 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) How long _is_ the coast of the M-set???

>As an article of faith, OK. But it is not something I would have intuited.
>Looking at a triangle and transforming it into the Koch curve, or looking
>at the Peano curve, it is pretty easy to understand the idea of finite
>area/infinite perimeter. But I don't know of a similar way of transforming
>a circle into the Mandelbrot set.

The connectivity of M was proven exactly this way: a deformation of a
circle into the M-set that doesn't ever break the circle up into
disconnected parts.

Perhaps Dr. J might be convinced to dilate a bit...

If he dilates any more he might explode! :-)

>BTW, Feigenbaum_Panorama = kewl (very well worth waiting 15 min for to see
>at high rez) although it raises another question: just how _deep_ is the
>Mandelbrot set, anyway.

Deep how? It obviously has structure to any conceivable length scale, no
matter how tiny; the local self similarity around Misiurewicz points,
a.k.a "whirlpools ofself similarity", demonstrates that.


- --
    .*.  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: Sun, 01 Feb 1998 01:40:03 -0800
From: kathy roth <[e-mail]>
Subject: (fractint) mars pars

Dr.J found his belly button on Mars
umbilical_1        { ; 2-1-98 kathy roth
                     ; frm by Paul Carlson
  reset=1960 type=formula formulafile=3d_bal~1.frm
  formulaname=3d_balls_julia center-mag=-1.0826/1.00949/2.117858
  params=-0.1/0.345/0.35/2/2/125 float=y maxiter=256 inside=0
  outside=summ
 colors=000JNF<2>caEkfDrkDzqCzmC<8>v8A<5>x39\
<3>`A7QE6KG6<7>rDQ<2>tS_uXcva\
 gwfkwknxpryuvzzz<33>LguKguJfuHetHdrHcq<4>F`kE\
_iEZhEYfDYe<8>BUVBUUBTTASR<\
  38>4AA<13>BZUC`VBZU<22>6B56936A4<46>PbF\
<6>svc<6>feBdc7``8<4>FOF
  }

"I_Come_in_Peace"  { ; 2-1-98 kathy roth
                     ; frm by Paul Carlson
  reset=1960 type=formula formulafile=3d_bal~1.frm
  formulaname=3d_balls_julia center-mag=-0.814285/0.820662/3.121475
  params=-0.1/0.3/0.35/1/2/125 float=y maxiter=256 inside=0
  outside=summ
  colors=0000xU0zW<7>0JJ<14>0xx0zz2tt<6>\
JE9<15>yjU<7>BJF<15>_zn<6>LO3<8>px\
 9<5>KMGFGIBBM<14>WWz<7>J9J<15>zWz<7>\
J09<15>z0W<7>J90<15>zW0<7>JJ0<15>zz0\
  <7>99J<15>WWz<7>0J9<13>0uT
  }

"My_right_eye_hurts"  (maybe it's been too long a day)
{ ; 2-1-98 kathy roth
                     ; frm by Paul Carlson
  reset=1960 type=formula formulafile=3d_bal~1.frm
  formulaname=3d_balls_julia center-mag=-1.17481/0.0798235/10.20143
  params=-1/0.3/10/0.1/2/100 float=y maxiter=256 inside=0 outside=summ
 colors=000ksx<21>LguKguJfuHetHdrHcq<4>F`kE\
_iEZhEYfDYe<8>BUVBUUBTTASR<38>\
 4AA<13>BZUC`VBZU<22>6B56936A4<46>PbF<6>\
svc<6>feBdc7``8<4>FOFJNF<2>caEkfD\
 rkDzqCzmC<8>v8A<5>x39<3>`A7QE6KG6<7>rDQ\
<2>tS_uXcvagwfkwknxpryuvzzz<10>mtx
    }

where_they_live    { ; 2-1-98 kathy roth
                     ; frm by Paul Carlson
  reset=1960 type=formula formulafile=3d_bal~1.frm
  formulaname=3d_balls_julia center-mag=-1.51894/2.73345/0.1613151
  params=-0.1/0.3/0.35/1/2/125 float=y maxiter=256 inside=0
  outside=summ
 colors=000ksx<21>LguKguJfuHetHdrHcq\
<4>F`kE_iEZhEYfDYe<8>BUVBUUBTTASR<38>\
 4AA<13>BZUC`VBZU<22>6B56936A4<46>PbF<6>\
svc<6>feBdc7``8<4>FOFJNF<2>caEkfD\
rkDzqCzmC<8>v8A<5>x39<3>`A7QE6KG6<7>rDQ\
<2>tS_uXcvagwfkwknxpryuvzzz<10>mt\
  x
  }






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Date: Sun, 1 Feb 1998 04:41:09 -0500 (EST)
From: [e-mail] (Paul Derbyshire)
Subject: Re: (fractint) mars pars

3d_bal~1.frm???

Oh great. As if printed-quotable and that other a' encoding aren't enough,
now someone's Windows 95 has decided to munge file names on them...


- --
    .*.  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: Sun, 1 Feb 1998 09:29:13 -0500 (EST)
From: Donald Archer <[e-mail]>
Subject: (fractint) for par makers only

Dear par makers,

Please always include formulas in frm: format along with pars
downloaded to this list. Please! I either don't save formulas
that appear here, or save them in formulafiles of by own naming.
This would save me a lot of searching and aggrevation as I try
to find the targetted formula. And I'm sure others have this problem too.

Don


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Date: Sun, 1 Feb 1998 07:31:04 -0800
From: "Mike or Linda Allison" <[e-mail]>
Subject: (fractint) New Gallery

Hi, all!

I just put a new gallery up at:

http://www.toptown.com/innercircle/gumbycat/index.html

The gallery is Mike's, but features my fractals.  Since my other pages
change quite often, I wanted a place to keep a permanent display of my
favorites, and Mike's Top Town page provides it.

I'm particularly pleased with galleries 3 and 4.  Please let me know what
you think.

Linda Allison
([e-mail])  NO SPAM!
http://www.geocities.com/~gumbycat (last update: 01-30-98)
http://www.fortunecity.com//tattooine/stephenson/5/abpf.html (last update:
01-30-98)
http://www.toptown.com/innercircle/gumbycat/index.html (NEW! 02-01-98)


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Date: Sun, 01 Feb 1998 08:55:18 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) for par makers only

Don...

I've learned to avoid the "look for the formula" problem by naming the
formula in the par as *.frm and letting fractint do the looking......I'm
trying to do my postings that way from now on.

Angela

At 09:29 AM 2/1/98 -0500, you wrote:
>Dear par makers,
>
>Please always include formulas in frm: format along with pars
>downloaded to this list. Please! I either don't save formulas
>that appear here, or save them in formulafiles of by own naming.
>This would save me a lot of searching and aggrevation as I try
>to find the targetted formula. And I'm sure others have this problem too.
>
>Don
>
>
>-
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>

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Date: Sun, 1 Feb 1998 12:27:44 EST
From: [e-mail]
Subject: Re: (fractint) for par makers only

In a message dated 98-02-01 09:33:30 EST, you write:

<< Dear par makers,

 Please always include formulas in frm: format along with pars
 downloaded to this list. Please! I either don't save formulas
 that appear here, or save them in formulafiles of by own naming.
 This would save me a lot of searching and aggrevation as I try
 to find the targetted formula. And I'm sure others have this problem too.

 Don

  >>

Don,
I second that sentiment!
Ron Barnett

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Date: Sun, 1 Feb 1998 12:41:35 EST
From: [e-mail]
Subject: (fractint) Truemand update

Hello everyone!

Do to requests and some complaints from Wizzle about the difficulties in
chosing colors in truecolor programs, I have incorporated a palette animation
option into Truemand to make color optimization a little easier. To use it you
need to have your computer in a 256 color video mode (Windows 3.1, Windows 95
or Windows NT). The program can then be shifted to a 256 color palette
animation mode. Colors will be banded, but you will now be able to load new
color maps and rotate the the palette with "<" and ">" keys very similar to
Fractint. When the program is shifted back out of the palette animation mode
the truecolor fractal will be generated. Look under "keyboard commands" in the
help file for an explanation of how to shift in and out the the palette
animation mode.  Any imput would be greatly appreaciated.

Cheers,
Ron Barnett
http://members.aol.com/RBarn0001

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Date: Sun, 01 Feb 1998 11:06:02 -0800
From: Wizzle <[e-mail]>
Subject: Re: (fractint) Truemand update

Ooooooooooooooooo.....sounds great ron!!! I'll certainly give it a try
(didn't mean to complain).  I know all that truecolor stuff is more
difficult from a programing standpoint than it looks to us users.  Your
solution sounds just about perfect!!!

Angela aka wizzle


At 12:41 PM 2/1/98 EST, you wrote:
>Hello everyone!
>
>Do to requests and some complaints from Wizzle about the difficulties in
>chosing colors in truecolor programs, I have incorporated a palette animation
>option into Truemand to make color optimization a little easier. To use it
you
>need to have your computer in a 256 color video mode (Windows 3.1, Windows 95
>or Windows NT). The program can then be shifted to a 256 color palette
>animation mode. Colors will be banded, but you will now be able to load new
>color maps and rotate the the palette with "<" and ">" keys very similar to
>Fractint. When the program is shifted back out of the palette animation mode
>the truecolor fractal will be generated. Look under "keyboard commands" in
the
>help file for an explanation of how to shift in and out the the palette
>animation mode.  Any imput would be greatly appreaciated.
>
>Cheers,
>Ron Barnett
>http://members.aol.com/RBarn0001
>
>-
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>
>

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Date: Sun, 1 Feb 1998 14:17:21 -0500
From: "Blake Hyde" <[e-mail]>
Subject: (fractint) Test -- Read this not

This is a test to see if my POP3 server is going to let me use email again.

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


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Date: Sun, 01 Feb 1998 14:09:37 -0500
From: Todd Pafford <[e-mail]>
Subject: (fractint) xfractint?

Hi all, perhaps someone can help me out with something...

Several months ago, I grabbed xfractint off the net, compiled it, but it
never worked quite right. For example: cannot change color maps (stuck
with a blue>black gradient), drawing algorithms leave 'artifacts' in the
form of miscelaneous pixels, no support for various image sizes, etc.
So instead of fooling with it too much, I turned to the standard dos
fractint and love it, but now I want to revisit the xfractint so that I
don't have to reboot to dos to do some exploring.

Specs:
xfractint versions 3.00 'fixed' and 3.04 (both had same probs)
RedHat Linux 4.1 (modified/updated)
XFree86 @ 32 bpp
gcc 2.7.2.1
libc 5.3.12

Any thoughts on how I might get this to work?
Thanks in advance.

- ---
"If the doors of perception were cleansed everything would appear
 to man as it is, infinite."  -- William Blake

Todd Pafford   [e-mail]

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Date: Sun, 1 Feb 1998 19:15:26 -0000
From: "Bagpuss" <[e-mail]>
Subject: (fractint) Feb 1998 Pars

Hi All,

    I have made available on my website some space for
displaying images posted to this list for this month.
Currently there are contributions from 5 people, and I'll
update every couple of days.

The URL is:
http://ireland.iol.ie/~bagpuss/feb98.html
Enjoy.

Stephen
Consistency is the defence of a small mind -- Belgarath


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Date: Sun, 1 Feb 1998 14:31:36 -0500
From: "Blake Hyde" <[e-mail]>
Subject: Re: (fractint) xfractint?

:never worked quite right. For example: cannot change color maps (stuck
:with a blue>black gradient)
This is the only one I can be sure of answering: don't use truecolor or
highcolor video modes. Fractint just ain't meant for em. (yet.) If you want
truecolor fractals, check out Truemand.

:drawing algorithms leave 'artifacts' in the

:form of miscelaneous pixels, no support for various image sizes, etc.
No support... hmm, try the "v" menu. The image sizes may be working, you
just can't see them. Turn preview mode on in the menu.

:So instead of fooling with it too much, I turned to the standard dos
:fractint and love it, but now I want to revisit the xfractint so that I
:don't have to reboot to dos to do some exploring.



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Date: Sun, 1 Feb 1998 15:26:13 -0500
From: "Blake Hyde" <[e-mail]>
Subject: (fractint) Truemand Question (incredibly important. If not answered, earth will be destroyed. Matter of national security.)

Well, maybe not.

But I am getting an annoying error with truemand, and I don't like getting
annoying errors.

I keep getting 29 byte targa files, and i can't figure out what's wrong.

Everyone will probably need my parms.tru and nodes.tru files:

=PARMS.TRU==================================================================
=========
NOTE: on the corners line, i deleted about 30 extra 0s off each. (at the
end.) If you don't understand what i mean, hit tab and look at the corner
values in fractint.
- ----------------------------------------------------------------------------
- ---------
corners=-2.00000002/1.50000006/1.99999962/-1.49999967
maxiter=150
type=julia
center-mag=-1.4e-007/1.35e-007/0.6666667
params=0.2793424874544144/-0.009394437074661255
============================================================================
=========

=NODES.TRU==================================================================
=========
These were generated straight from M24EDIT.
- ----------------------------------------------------------------------------
- ---------
0.000   161 240   0
0.218   321 240  60
0.645   281 240 120
1.000   166 210  83
============================================================================
=========

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


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Date: Sun, 01 Feb 1998 14:52:16 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) Truemand Question (incredibly important. If not answered, earth will be destroyed. Matter of national security.)

Blake Hyde wrote:

> Well, maybe not.
>
> But I am getting an annoying error with truemand, and I don't like getting
> annoying errors.
>
> I keep getting 29 byte targa files, and i can't figure out what's wrong.

Weird, but not as weird as my experience with true-color 3D renderings with
Fractint.  I would transform some picture using Targa output, and I would get a
ZERO-byte targa file.  The weird thing is that if I viewed it using MGI
Photosuite SE, the picture would look perfect!! (unless I didn't use
light-sourcing)  Talk about compression...

Did you try viewing the result?  Chances are the picture would look fine.  I
have to wonder what the discrepancy between the actual size and reported size
is doing to our hard disks, though...

Hope I just helped to save the world! <g>

- --
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, 01 Feb 1998 14:59:46 -0600
From: "Justin A. Kolodziej" <[e-mail]>
Subject: Re: (fractint) xfractint?

Blake Hyde wrote:
>
> :never worked quite right. For example: cannot change color maps (stuck
> :with a blue>black gradient)
> This is the only one I can be sure of answering: don't use truecolor or
> highcolor video modes. Fractint just ain't meant for em. (yet.) If you want
> truecolor fractals, check out Truemand.
That's correct.  I use XFractint all the time and love it.  XMFract is a
different matter, though...  it doesn't seem to work.  Can't change
fractal types, access help, or do anything that involves a list of names
in a dialog box.  Of course, I was using Lesstif because I didn't want
to pay for a proper Motif implementation... ;-)
> :drawing algorithms leave 'artifacts' in the
>
> :form of miscelaneous pixels,

Another side effect of no support for truecolor.  If you use 256-color
(yuck) mode, the artifacts will go away.
> :no support for various image sizes, etc.
> No support... hmm, try the "v" menu. The image sizes may be working, you
> just can't see them. Turn preview mode on in the menu.
There _is_ support, it's just not very interactive.  You have to use the
- -geometry command-line option to get different sizes.  Oh, and I suggest
using th -private command line option so you get all the colors you
deserve! <g>
>

- --
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, 1 Feb 1998 16:21:11 -0500
From: "Blake Hyde" <[e-mail]>
Subject: ANOTHER QUESTION! (was: Re: (fractint) Truemand Question...[snip humorous subject])

:light-sourcing)  Talk about compression...
Now get it to do that to all files and see how much money you can make... ;)

:Did you try viewing the result?  Chances are the picture would look fine.
I
:have to wonder what the discrepancy between the actual size and reported
size
:is doing to our hard disks, though...


:| It didn't look fine. I added two lines, NROWS and NCOLS, after reading
the docs more closely. And then I found out that TGA files are HUGE. *sigh*
I converted it to PNG, hoping for better compression, and got it. BUT
Micro$ucks Internet Exploder 4.0 can't view PNG files. It should be able to,
but it doesn't.

*sigh* Anybody know a way around this?


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End of fractint-digest V1 #95
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