Nova (Mandelbrot),z-f(z)/f'(z)+c应定位于z-f(z)/f'(z)+c的导函数为零的点,这样才能扫出标准的M集。
这是f(z)=z^3-1的此种分形。
NovaMandel {
init:
z = 1
loop:
zold=z
z = z - (z^3-1) / (3*z^2) + #pixel
bailout:
|z - zold| > @bailout
default:
title = "Nova (Mandelbrot)"
helpfile = "Uf*.chm"
helptopic = "Html\formulas\standard\nova.html"
$IFDEF VER50
rating = recommended
$ENDIF
maxiter = 1000
periodicity = 0
center = (-0.5,0)
magn = 1.5
param bailout
caption = "Bailout"
default = 0.00001
$IFDEF VER40
exponential = true
$ENDIF
hint = "Bailout value; smaller values will cause more \
iterations to be done for each point."
endparam
switch:
type = "NovaJulia"
seed = #pixel
power = @power
bailout = @bailout
relax = @relax
} |