Jan. 18, 2013: Broken Julia Spirals | Jan. 17 | Jan. 20 | 2012 | FOTD Home |
Fractal visionaries and enthusiasts:
Today's
image is
another 'almost' Julia set. The parent Julibrot was created
by
iterating the expression (-Z)^(1.618034)+C. The area of the
image
lies deep in the west branch of the valley enclosing the large bud on
the northeast shore line of the main bay of the associated Mandeloid.
The image very clearly illustrates the hairline spirals that lie in the
Julia sets of the areas just inside Mandelbrot valleys. The
name
"Broken Julia Spirals" refers to the spirals on the top side of the
grossly enlarged Mandelbrot valley fragment cutting diagonally across
the inside of the open area in the image.
These spirals are broken because of the limited resolution of the
image, which causes many pixels to totally miss the very narrow body of
the spirals and print it as an open area. This breakup can be
eliminated by the process of anti-aliasing, which calculates the image
at a higher resolution, slightly blurs the result then shrinks it
down. Unfortunately, the process can be quite time consuming.
The rating of a 7 is FOTD average. If such images had not
been
posted so frequently lately, I might have rated the scene as high as an
8.
The calculation time of 7 minutes is a bit excessive. To save
time, I recommend checking one of the FOTD web sites.
Today brought lots of sun to Fractal Central, but the temperature never
rose above 30C -1C. The fractal cat basked in the sun all
afternoon, having the best day so far this winter. The humans
passed the very bright day getting organized.
The next FOTD will not be posted before January 20, since I'm going
back to Old Fractal Central tomorrow to finish a few things that need
to be done. Until whenever, take care, and since everyone
claims
to do what is right, why does so much wrong exist in the world?
Jim Muth
jimmuth@earthlink.net
START PARAMETER FILE=======================================
BrokenJuliaSpirals { ; time=0:07:00.00 SF5 at 2000MHZ
reset=2004 type=formula formulafile=basicer.frm
formulaname=SliceJulibrot5 passes=1 periodicity=6
center-mag=0.10596/0.159292/0.8912656/1/46.75/0
params=89.8/0/89.8/0/0.3125/0.5702/0/0/1.618034/0
float=y maxiter=5000 inside=0 logmap=yes
colors=000B36701812923A33B34C44D55E66F66G77G87H98I\
98JA9KBALCAMCBNDBOECNFBOECOECPECPEDQEDQEDREEREEREE\
SEFSEFTEGTEHUEISEJQGKOILMKMKMNIOOGQPFSQEURDWSCXTBY\
TCbWDgZElaGjcHieIggJfiLdkMcmNaoO`pSYkWWg_UccR_gPWk\
NSqKNoLOmMOlNOjOPiPPgQPfRPdSQcTQaUQ`VQZVRYWRWXRVYR\
TZSS_SQ`SPaSNbTMcTKdTJdTLcVNbWPaXR`ZT`_V_`XZbZYc`Y\
dbXfdWgfVhhUjjUklTlnSnpRorRptQrvPsxOtyOuwNsuNrsNpq\
NooNnmNlkNkiMigMheMgdMebMd`McZMaXL`VLZTLYRLXPLYNLZ\
LK_JK`HKaFKaDKbDKbDKbEKcGKdHKeIJeKIeLHeMIeOJePJeRK\
eSKeTLeVMeWMeXNeZNe_Ob`O``OeUViNamGhq9ou7rw2vyCtqM\
riVpadnUloHmmMnlQnjUoiYphapfeqeiphoqdmralrZjsWisSg\
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dCfd9deBbeCaeD_eEZfFXfGWfHUfITfJRgLPgMOgNMgOLhPJhQ\
IhRGhSGjSFhTFfTFeUFcUEbVE`VEZVEYWEWWDVXDTXDSYDQYDO\
YCNZCLZCK_CK`CKaCKbCKcCKc }
frm:SliceJulibrot5 {; draws all slices of Julibrot
pix=pixel, u=real(pix), v=imag(pix),
a=pi*real(p1*0.0055555555555556),
b=pi*imag(p1*0.0055555555555556),
g=pi*real(p2*0.0055555555555556),
d=pi*imag(p2*0.0055555555555556),
ca=cos(a), cb=cos(b), sb=sin(b), cg=cos(g),
sg=sin(g), cd=cos(d), sd=sin(d),
p=u*cg*cd-v*(ca*sb*sg*cd+ca*cb*sd),
q=u*cg*sd+v*(ca*cb*cd-ca*sb*sg*sd),
r=u*sg+v*ca*sb*cg, s=v*sin(a), esc=imag(p5)+9
c=p+flip(q)+p3, z=r+flip(s)+p4:
z=(-z)^(real(p5))+c
|z|< esc }
END PARAMETER FILE=========================================