hello,
i'm new here and like few others i understand code better than math formulas
i'm trying to generate mandelbox in houdini(
www.sidefx.com) but i'm stuck, i've made mandelbulb which if i get it correctly, looks like this:
and on code looks like:
p0[xyz] = p[xyz] //point position
n = 8 // power
itter = 15 // number of iterations
for (i=0, i<itter, i++){
p[xyz] => sp[r theta phi] // to spherical
r= pow(r, n)
theta = theta * 8
phi = phi * 8
sp[r theta phi] => p[xyz] // back to cartesian
p[xyz] = p[xyz] + p0[xyz]
}
i'm using original sample position as c which seems to give correct results, am i right?
And, i think, i get folding too.
(this one is from wiki)
function iterate(z):
for each component in z:
if component > 1:
component := 2 - component
else if component < -1:
component := -2 - component
if magnitude of z < 0.5:
z := z * 4
else if magnitude of z < 1:
z := z / (magnitude of z)^2
z := scale * z + c
what i don't get, is how to put it together? mandelbox is mandelbrot folded into a box, right?
they both have loops/iterations should i do mandelbulb and then fold it?
or is it one step of folding + step mandelbulb? (i think i've tried it too)
I've found lots of examples and snippets of code, but it still doesn't work
i'm probably missing something obvious.
P.S. If anyone is interested in houdini version of mandelbulb i'm attaching the file
and will defenately do so with mandelbox after i get it
December 09, 2006, 11:41:48 PM
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