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- From: dewey@mipg.upenn.edu (Dewey Odhner)
- Newsgroups: sci.fractals
- Subject: Re: lopsided baby, freckles
- Date: 30 Aug 1995 14:45:30 GMT
- Organization: University of Pennsylvania
- Lines: 47
- Distribution: world
- Message-ID: <421tia$ln5@netnews.upenn.edu>
- References: <41covh$m8q@netnews.upenn.edu> <1995Aug24.010028.16040@nosc.mil> <41kus1$7aa@netnews.upenn.edu>
- NNTP-Posting-Host: picard.mipg.upenn.edu
-
- Several years ago I looked at a formula that I called Dragonbat.
- Just this past weekend I started using Fractint formula for the first
- time, and in a relative of Dragonbat, which I am calling Dragonbat2,
- I found some really bizarre stuff including an asymmetric baby
- mandelbrot (see lops_db2 parameters below or
- ftp://mipgsun.mipg.upenn.edu/pub/dewey/lops_db2.gif). I wonder whether
- this is the limit of the sequence I mentioned in my previous posting
- (if you remove the disconnected wisps around it). It looks like
- the buds could become symmetrical if it went a little further, except
- for the filaments, which have different branching patterns.
- So the symmetrical object I was speculating about does not exist.
-
- Can you believe what's hatching out of that egg that's lying on the
- main blob near this baby?
- (See ftp://mipgsun.mipg.upenn.edu/pub/dewey/wild.gif)
-
- lops_db2 {
- reset=1920 type=formula formulafile=dewey.frm formulaname=Dragonbat2
- center-mag=-0.13879555450000000/+0.61682742800000000/133.3769/0.9997
- params=0/0/0/0/0/0 maxiter=333 inside=0
- colors=000Q3c<53>vlxvlxukw<80>0MK<8>eTl<73>Hh7GNC<32>Q3c
- }
-
- Here are my formulas. (By the way, these formulas don't show the dragon-
- and batlike appearance as in my original Dragonbat program.)
-
- Mandelcubic(XYAXIS) {; Dewey Odhner
- z = Pixel, z = Sqr(z)*z: ; Start with z**3 to initialize LastSqr
- z = z + Pixel
- z = Sqr(z)*z
- LastSqr <= 4 ; Use LastSqr instead of recalculating
- }
-
- Dragonbat(XAXIS) {; Dewey Odhner
- c = Pixel, z = Sqr(Pixel)+Pixel:
- z = Sqr(Sqr(z)+c)-c
- c = -c
- LastSqr <= 4
- }
-
- Dragonbat2(XAXIS) {; Dewey Odhner
- c = Pixel, z = Sqr(Pixel)-Pixel:
- z = Sqr(Sqr(z)+c)+c
- c = -c
- LastSqr <= 4
- }
-
-