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"Chris Huff" <chr### [at] yahoo com> wrote in message
news:chrishuff_99-00EEB8.15435524022000@news.povray.org...
>
> function {
> sqrt(
> sqr(x)
> + sqr(y-sqrt(sqr(x/2)+sqr(z/2))*1.5)
> + sqr(z)
> ) - 1
> - (sin(TH(x, y, z)*18)*0.1)//This is what makes the ridges
> }
How did you come up with this? Luck? Patience? Or did you say, "hmm...
the formula for a cactus should be blah blah blah" and just whip it up?
Even tho I've had a couple semesters of calculus and physics (20 years ago)
I have no clue how to take an idea and make an iso-surface out of it.
Eric
--------------------
http://www.datasync.com/~ericfree
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"The whole problem with the world is that fools and fanatics are always so
certain of themselves, but wiser people so full of doubts."
--Bertrand Russel
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