Jim Muth wrote:
Today's image is a scene in the 'Zexpe' fractal, the Mandeloid created by the formula Z^(epsilon)+C. I think the fractal was given its name by Lee Skinner.....
.....and the old image that I found on the floppy disk was created by a formula named 'Zexpe', which I do not have in my files.
Here are but a few of the various "Zexpe" type formulae that may be found within the ORGFORM collection at: http://www.nahee.com/PNL/OrgForm.html Zexpe (XAXIS) { ; Lee Skinner [75450,3631] s = exp(1.,0.), z = Pixel: z = z ^ s + pixel, |z| <= 100 } Zexpe2 (XAXIS) { ; Lee Skinner [75450,3631] s = exp(1.,0.), z = Pixel: z = z ^ s + z ^ (s * pixel), |z| <= 100 } Ze2 (XAXIS) { ; Lee Skinner [75450,3631] s1 = exp(1.,0.), s = s1 * s1, z = Pixel: z = z ^ s + pixel, |z| <= 100 } Zexp2 (XAXIS) {; from ImageLab ; use floating point with this one ?! z=pixel: z=z^1.414213562373 + pixel |z| <= 4 } Zexpe&pi (XAXIS) {; Zexpe with (e + Pi) z = Pixel: z = z ^ 5.859874482049 + pixel |z| <= 100 } Moe { ; Mutation of 'Zexpe'. ; Original formula by Lee Skinner [75450,3631] ; Modified for if..else logic 3/19/97 by Sylvie Gallet ; For 'Zexpe', set FN1 & FN2 = IDENT and P1 = default ; real(p1) = Bailout (default 100) s = exp(1.,0.), z = pixel, c = fn1(pixel) ; The next line sets test=100 if real(p1)<=0, else test=real(p1) IF (real(p1) <= 0) test = 100 ELSE test = real(p1) ENDIF : z = fn2(z)^s + c |z| <= test } ; ; Moe { ; Mutation of 'Zexpe'. --- Original version --- ; ; Original formula by Lee Skinner [75450,3631] ; ; For 'Zexpe', set FN1 & FN2 =IDENT and P1 = default ; ; real(p1) = Bailout (default 100) ; s = exp(1.,0.), z = pixel, c = fn1(pixel) ; ; The next line sets test=100 if real(p1)<=0, else test=real(p1) ; test = (100 * (real(p1)<=0) + real(p1) * (0<p1)): ; z = fn2(z)^s + c ; |z| <= test } Many other collections, such as .PAR, .MAP, .IFS, .L, etc. may be found within the links at: http://www.nahee.com/Fractals/FractInt/index.html Sincerely, P.N.L. -------------------------------------- http://www.Nahee.com/PNL/Fractals.html http://www.Nahee.com/Fractals/