Bryan Heit wrote:
> I'm trying to create a scene which relies on the random placement/sizing 
> of blobs to form "rough ground".  Unfortunately, the random number 
> generators in Povray aren't very random (if I'm reading the help file 
> correctly there is just a random series of numbers that the system runs 
> through).  Any ways, as a result of this a pattern forms in the 
> topography that I am generating, and that is exactly what I'm trying to 
> avoid.  Has anyone out there figured out a better random-number 
> generator, or know of a way in which I can make pov-rays random number 
> generator a little more random.  Any advice (macro, code, formula or 
> even just ideas) is appreciated. . .

First of all any random number generator is just a random series of 
numbers that repeat after some time.  Of course the POV-Ray rand() 
function is not a very good one since like most simple random number 
generators it calculates the next random number from (and only from) the 
last one.  Still it is unlikely (but not impossible) that a regularity 
you see is caused by the rand() function.

Christoph

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