At 12:51 AM 5/19/2011 -0600, Jay Litwyn wrote:

MandelBroh { ; What can you do with this, Jim? ; This is all I can figure for a parser formula that does Julia types. ; It requires plugging screen coordinates into P4. z=fn1(pixel) +P2, c=fn2(pixel) +P3:

if(ismand) z=z^real(P1) +c else z=z^real(P1) +P4 endif

|z| <= imag(P1)

Jay: It looks to me as though you are trying to write a formula that will automatically switch between the Mandelbrot and Julia aspects of a fractal by toggling 'ismand' on and off. To get the formula to work as you intend, with the screen coordinates automatically entered into the P4 parameter, would probably require new parser code. But many of the formulas hard coded into Fractint already do just this. With a Mandelbrot image on the screen, (try the manzpower formula), strike the space bar. A marker will appear at the center of the screen. Move the marker to the area of the Mandelbrot scene that you would like to see the Julia set of, and strike the space bar again. The Julia set will instantly be calculated. Striking the space bar again will return to the Mandelbrot set. JIM