Russell,
I'm beginning to get a bit of feel for what's going on in these formulas. >Very ingenious! I marvel that you are so conversant with this type of >programming. Is writing code then your profession? If so, what is your >speciality?
Uh, that's flattering, but not close to reality by a long shot! 8-) (If all people who'd be able to produce such a formula were professional programmers, practically *everybody* would qualify as one.) The truth seems to be that most people are interested in producing pictures, period, not that much in producing images of objects (and those who do probably have wandered off mostly to 3d-renderers, raytracers and the like), so the real "tricksters" have used their formula effects for the former (aesthetically pleasing images, that is). Just as an example, run the parameters in Sylvie Gallet's LAKE.PAR (it's part of Fractint's standard distribution). Whatever "formula savvy" I might have comes from using Fractint for quite some time now (since '92); that's all, I'm afraid. :-)
BTW, could you give me some initial values for '3dJulibrot_simple' that >generate a nice image? Thanks again.
Because "3dJulibrot_simple" was stripped of a few additional features to not distract from the main algorithm, it is nothing but a "private" version of Fractint's Julibrot type (using subtype "julia"). You could try: Julibrot_Default {; ; reset=2004 type=formula formulafile=fml_post.frm formulaname=3dJulibrot_simple corners=-2/2/-1.5/1.5 params=-0.83/-0.25/-0.83/0.25/150/253/4/0 float=y maxiter=2000000000 outside=summ periodicity=0 colors=@altern.map } Along_Real_Axis {; ; reset=2004 type=formula formulafile=fml_post.frm formulaname=3dJulibrot_simple corners=-2/2/-1.5/1.5 params=0.25/0/-2/0/150/253/4/0 float=y maxiter=2000000000 outside=summ periodicity=0 colors=@altern.map } And for something Fractint's original "Julibrot" can't do: While or after running a parameter set, go to the <y> screen and put "auto" in all three input fields for "Inversion", then press <enter>... Greetings, Gerald