! Guide to FRACTL: files.   JHB 16/2/86

!IFF image handling utilities
IFFEN.IMP
IFFANAL
IFFANAL.MOB

IFFDISP
IFFDISP.MOB

IFF.INC
IFFCONV
IFFCONV.MOB

IFF3D            Takes an IFF file and creates a pseudo-perspective 3-D picture
IFF3D.MOB        by building blocks on it

!RL image handling utilities
RLTOIFF         Convert RL to IFF format
RLDISP          Display an RL image to screen
RLCONV          PR format to JHB RL compressed
RLCMPARE        Compare an RL image to itys unconverted PR equivalent
RLEN

!Documentation
INTRO           Notes on Mandelbrot set images for Demo program
FRAC_READ
FRAC.DAT
READ.ME

LOGIN.COM
GRID.DAT

FRAC.MOB        Fractal generator
FRAC
JHBFRAC

ANIMATE         Animate by rotating colour map
ANIMATE.MOB
COLWHEEL        Animate if desired with a continuum colour map (no colour jumps)
COLWHEEL.MOB
AN1

DISP
DISP.MOB
DISPSECT
NG
MAKEMAP

! Uncompressed images with old PR header
PIC8
WEE2

! JHB-compressed image with modded IFF header

Figures are [x_min,y_min] [x_max,y_max] where z = x+ iy
Constant c is given as {c_real, c_imag.} where appropriate.
x Wide * y High are in Pixels.   Blks is blocks required for compressed image.

Alternative nomenclature..
c_l  given as c_real, c_imag.  then width in Fortran floating point form.
D-02 reads as " * 10 to the power -2"
This was preserved from the original DAP Fortran file to avoid typos.
Map and Fig. numbers refer to "Schondheit im Chaos" by Peitgen & Richter.

PIC1.IFF:      Self similar dragon fractal of the type Z -> Z**2 + C 
               Map 18: [-1.5,-1.5] -> [1.5,1.5]  {0.32+0.043i}  255 iterations
               13/02/86  13.37:00. 512 wide * 512 high.   163 blks.
 
PIC2.IFF:      The "Parent" Mandelbrot Set 
               Map 22: [-2.25,-1.5] -> [0.75,1.5] 255 iterations
               20/12/85  13.44:00. 512 wide * 512 high.    80 blks.

PIC3.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 23: (detail of Pic2) [-0.19920,1.01480] -> [-0.12954,1.06707]
               511 iterations
               24/02/86  13.52:00. 682 wide * 512 high.   171 blks.
 
PIC4.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 32: (detail of Pic2) [-0.75104,0.10511] -> [-0.74080,0.11536]
               16/01/86  22.19:00. 512 wide * 512 high.   307 blks.
               511 iterations
 
PIC5.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 36: (detail of Pic4) [-0.74591,0.11196] -> [-0.74448,0.11339]
               16/01/86  22.18:00. 512 wide * 512 high.   230 blks.
               511 iterations

PIC6.IFF:      Lost
               Map 38: (detail of Pic5)
               511 iterations
               512 * 513

PIC7.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 39: (detail of Pic6) [-0.745468,0.112979] -> [-0.745385,0.113039]
               511 iterations
               24/02/86  14.26:00. 688 wide * 497 high.   337 blks.
 
PIC8.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 42: (detail of Pic7) [-0.7454356,0.1130037] -> [-0.7454215,0.1130139]
               511 iterations
               24/02/86  14.32:00. 650 wide * 470 high.   409 blks.
 
PIC9.IFF:      A small section near the border of the Mandelbrot Set. 
               Map 43: (detail of Pic8) [-0.7454301,0.1130076] -> [-0.7454289,0.1130085]
               1023 iterations
               24/02/86  14.36:00. 683 wide * 512 high.   528 blks.
 
PIC10.IFF:     Unknown
               Special Iterate: z -> z**2 + z + c
               255 iterations
               24/02/86  14.54:00. 512 wide * 512 high.    74 blks.

PIC11.IFF:     Self similar dragon fractal of the type Z -> Z**2 + C 
               (Dragon: One attractor = infinity)  255 iterations
               Fig 19: [-1.3,-1.3] -> [1.3,1.3]   {0.27334+0.00742i}
               13/02/86  14.03:00. 512 wide * 512 high.   121 blks.
 
PIC12.IFF:     Unknown (Pic11 - second attractor at 0.34 + 0.4i)
               24/02/86  14.51:00. 512 wide * 512 high.   143 blks.

PIC13.IFF:     Fatou Dust Fractal of the type z->z**2+c where C lies outside the
               Mandelbrot set.  Fig 22: [-1.5,-1.5] -> [1.5,1.5] {0.1103-0.67037i
               255 iterations
               13/02/86  14.04:00. 512 wide * 512 high.   133 blks.
 
PIC14.IFF:     Fatou Dust Fractal of the type z->z**2+c where C lies outside the
               Mandelbrot set.  Cantor Set [-1.5,-1.5]->[1.5,1.5] 
               {-0.194-0.6557i}       255 iterations
               13/02/86  13.50:00. 512 wide * 512 high.   154 blks.
 
PIC15          Lost (Self similar dragon fractal, Detail of Pic1)
               255 iterations
               [0.046875,0.6328125] -> [0.6035156,1.1425782]   {0.32+0.043i}

PIC16          Lost
               511 iterations
               [0.4571359,0.827957] -> [0.5158869,0.8916777]   {0.32+0.043i}

PIC17          Lost
               511 iterations
               [0.4113301,0.871765] -> [0.4551444,0.9185598]   {0.32+0.043i}

WEE1.IFF:      Unknown (Pic1)
               16/01/86  22.22:00. 250 wide * 250 high.    50 blks.
 
WEE2.IFF:      Unknown (Pic2)
               16/01/86  22.23:00. 250 wide * 250 high.    29 blks.
 
WEE3.IFF:      Unknown (Pic3)
               16/01/86  22.23:00. 250 wide * 250 high.    70 blks.
 
WEE4.IFF:      Unknown (Pic4)
               24/02/86  14.39:00. 333 wide * 250 high.    61 blks.
 
GALAXY1.IFF:   Soooommme - whheeeerre, oooover the Mandelbrot set....
               27/05/86  17.12.43. 640 wide * 640 high.   462 blks.
               c_l =   -0.53317684597   0.50286187066
               width = 0.96554226346D-02   511 iterations.

!A sequence...
ISLAND1.IFF:   The Mandelbrot set in its entirety.
               02/05/86  14.13.51. 640 wide * 640 high.    99 blks.
               c_l =   -2.0  -1.25
               width = 2.5   250 iterations.

ISLAND2.IFF:   The island just visible on the real axis to the left of Island1.
               02/05/86  14.54.56. 640 wide * 640 high.   170 blks.
               c_l = -1.8014322917  -0.32552083333D-01
               width - 0.65104166667D-01   350

ISLANDS3.IFF:  The third in the series of offshore Islands
               13/04/86  21.11.39. 640 wide * 640 high.   425 blks.
               c_l =   -1.7593759166   0.18603934183D-01
               width = 0.10066562229D-02   450 iterations.

ISLANDS4.IFF:  An  itsy-bitsy Island, off of the previous one
               13/04/86  20.13.40. 640 wide * 640 high.   598 blks.
               c_l =   -1.7585590802   0.18757220285D-01
               width = 0.13711676864D-04   513 iterations.

!A sequence...
!Three1 would be the main set
               c_l =   -2.0  -1.25  width = 2.5

THREE2.IFF:    An area known as the Devil's Dentures.
               01/05/86  17.31.07. 640 wide * 640 high.   196 blks.
               c_l =   -0.10862223307  -0.65205891927
               width = 0.37638346354D-02   450 iterations.


THREE3.IFF:    This is a re-do of Three3, with more iterations.
               28/04/86  14.13.05. 640 wide * 640 high.   390 blks.
               c_l =   -0.10607380337  -0.65119147301
               width = 0.52438841925D-03   511 iterations.


THREE4.IFF:    A blowup of three3.
               19/04/86  20.03.26. 640 wide * 640 high.   515 blks.
               c_l =   -0.10599459887  -0.65093474118
               width = 0.83301285350D-04   600 iterations.


THREE5.IFF:    A single tooth from the upper plate of Three2.
               19/04/86  18.08.38. 640 wide * 640 high.   279 blks.
               c_l =   -0.10774498515  -0.64990745650
               width = 0.34795867072D-03   511 iterations.


THREE6.IFF:    A Super Spiral, on the tooth of Three5.
               19/04/86  18.37.59. 640 wide * 640 high.   478 blks.
               c_l =   -0.10759048788  -0.64976202065
               width = 0.42588691468D-04   600 iterations.


!Another sequence...
!Julia1 would be the main set
               c_l =   -2.0  1.25  width = 2.5

 
JULIA2.IFF:    The Sixth blob off the main one.
               24/04/86  17.33.00. 640 wide * 640 high.   345 blks.
               c_l =    0.37304687500   0.18554687500
               width = 0.65104166667D-01   450 iterations.


JULIA3.IFF:    The sixth blob off the sixth blob off the main blob.
               01/05/86  16.42.35. 640 wide * 640 high.   364( blks.
               c_l =    0.37991333008   0.20105997721
               width = 0.50014919705D-02   600 iterations.


JULIA4.IFF:    A big spiral off of the sixth sixth blob.
               25/04/86  17.33.35. 640 wide * 640 high.   526 blks.
               c_l =    0.38065573904   0.20185448505
               width = 0.87265615110D-03   600 iterations.


JULIA5.IFF:    The Dragon To End All Dragons.
               26/04/86  13.19.08. 640 wide * 640 high.   166 blks.
               0.38126138846   0.20457665125  -1.3262444251  -1.3262444251
               0.26524888502D+01   600     {Julia set}


!Mset1 would be the main set

MSET2.IFF:     The spiral [-0.74758,0.10671]  with side = 0.00134 
               02/03/86  14.56.33. 640 wide * 640 high.   740 blks.
 
MSET3.IFF:      Near the 2-4 bifurcation, [-1.2532,0.0209] with side 0.000444 
                28/02/86  20.02.35. 640 wide * 640 high.   599 blks.

! Stuff in GDEMO

FRACTAL alias FRACK runs a slide show of FRACTL images.

BUILD.IFF:     No title {Not a fractal - view out of a window}
               29/04/85  15:15:18. 256 wide * 256 high.   129 blks
 
