August 11, 2010: Sinuous Arms | Aug.
10 |
Aug. 12 | 2010 | FOTD Home |
Fractal
visionaries
and enthusiasts:
Today's scene is another unfamiliar view of Seahorse Valley of the
Mandelbrot set. Actually, the scene is more a Julia set than a
Mandelbrot set, being sliced as it is at an angle double rotated only 1
and 1 degrees from the true Julia orientation.
This is the kind of thing I usually pass quickly by when on the search
for a worthy fractal image, but today for some reason I decided to stop
halfway and make a FOTD from what I found there.
I calculated the image with the passes=b option, which works the
fastest with this image. This option misses a few insignificant
loops that are caught by passes=1, but that option takes 12 minutes to
calculate the scene.
The name "Sinuous Arms" does not refer to a fancy hotel; it describes
the main features of the image. I was undecided whether to rate
the image at a 6 or a 7. I finally decided on a measly 6.
If I had put more effort into the colors, I might have raised it to a 7.
Tuesday here at Fractal Central was far too hot for cat comfort, and
for human comfort also, for that matter. The temperature of 95F
35C was better suited for Arizona than Pennsylvania, and the fractal
cats must have agreed. We had a tough time getting them to move
from the cool floor.
My day was reasonably pleasant. The next FOTD will be posted in
24 hours. Until then, take care, and don't make a pact with the
fractal devil. He always demands payment in full.
Jim Muth
jamth@mindspring.com
jimmuth@aol.com
START PARAMETER FILE=======================================
Sinuous_Arms { ;
time=0:02:29.84-SF5 on P4-2000
reset=2004 type=formula formulafile=basicer.frm
formulaname=SliceJulibrot4 passes=b maxiter=15000
center-mag=-0.4099/-0.0475/3.84 inside=255 logmap=8
params=89/0/89/120/-0.755/0.03/0/0/2/0
float=y periodicity=6
colors=000N`_OY_PW_QT_RQ`SO`TL`UI`VG`WD`WB`ZEZaGXc\
JVfLThORkQPnTNpVLsYJu_HxbFzdDyeEyeExeExeFweFwfFvfF\
vfGvfGufGugGtgHtgHsgHsgHrgIrhIrhIqhIqhJphJpiJoiJoi\
KniKniKniKlhLkhLihLhgMggMegMdgMbfNafN`fNZeOYeOWeOV\
eOUdPSdPRdPPcQOcQNcQLcQKbRIbRHbRGaSEaSDaSCaSDbTDcT\
DcTEdTEeTEeTFfTFgTFgTFhTGhTGiTGjTHjTHkTHlTIlTImTIn\
TInTJoTJoTJpTKqTKqTKrTLsTLsTLtTLtTKrUJpUJnUImVIkVH\
iVHgWGfWGdWFbWF`XE_XEYXDWYDUYCTYCRYBPZBNZAMZAK_9I_\
9G_8F_8D`7B`79`68a66a54a53a76_98YBBWCDUEFSGIQHKOJM\
MLPKMRJOUHQWFRYDT`BVb9Wd7Yg5_i3`k2_l4_l6_l8ZlAZlCZ\
lDYmFYmHYmJXmLXmNXmOWnQWnSWnUVnWVnYVnZUo`UobUodTof\
TohToiSpkSpmSpoRpqRpsRptQnsQlsQksQisQgsQfrQdrQbrQa\
rQ_rQYrQXqQVqQTqQSqQQqQPqULiXIaVKcULdSNfROgPQiORjN\
SlLUmKVoIXpHYrGZsE`uDavBcxAdy9ezAdxAcvAbuAasB`qB`p\
B_nBZmBYkCXiCXhCWfCVdDUcDTaDT`DSZDRXEQWEPUEOSEORFN\
PGHCFMOFLMFKKFKJGJHGIF000 }
frm:SliceJulibrot4 {; 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=========================================