I'm trying to make a kind of samples for the julia_fractal object,
something like the portfolio of 3.5 but only with julia_fractal, and 
far simpler, and there is a lot of possible operations.

I had no problem finding a good 4D vectors for cube and square
(both in hypercomplex and quaternion), but I would really need some
help and suggestions for the remaining [a](sin|cos|tan)[h] as well
as exp, reciprocal, log and pwr.

I bet that if they exist, someone must have used them one day or another,
at least to test them, but I did not find any scenes with them, 
and I really wonder what they look like.

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<jer### [at] atosorigincom> wrote:

>I'm trying to make a kind of samples for the julia_fractal object,
>something like the portfolio of 3.5 but only with julia_fractal, and 
>far simpler, and there is a lot of possible operations.

Indeed.

>I had no problem finding a good 4D vectors for cube and square
>(both in hypercomplex and quaternion), but I would really need some
>help and suggestions for the remaining [a](sin|cos|tan)[h] as well
>as exp, reciprocal, log and pwr.

The [h] bit is really hard to predict. sin and cos are often
continuous and tan is rarely so.

I'll dig up my old sources if they've survived the cleaning.

>I bet that if they exist, someone must have used them one day or another,
>at least to test them, but I did not find any scenes with them, 
>and I really wonder what they look like.

I have. I've rendered about 15k fractals to date. Most of them being
random, hardly any are of any use :) But I'll see what I can do.

A neat trick I've done often is to choose two good-looking fractals
and do an anim by interpolating between parameters. Makes for some
cool morphing :)


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG      e-mail : pet### [at] tagpovrayorg

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On Tue, 30 Oct 2001 15:15:51 +0100, =?iso-8859-1?Q?J=E9r=F4me?=
Grimbert <jer### [at] atosorigincom> wrote:

>I'm trying to make a kind of samples for the julia_fractal object,
>something like the portfolio of 3.5 but only with julia_fractal, and 
>far simpler, and there is a lot of possible operations.
>

	Try using random numbers.  Have the .pov script output the
random numbers used as it parses.  Then if you like what appears
on the screen, write the numbers down.  If you don't like it,
change the seed number and render it again.  You should get
something in just a few minutes.
	Hmmm, I should apply this technique to isosurfaces ...

Pete

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