Stephen wrote:

> > ... simplest one of those to implement in POV macros is a Halton Sequence ...
>
> Thanks for that Edouard it looks very interesting.

Halton Sequences are really interesting and useful - I happened to be instant
messaging a friend in London a couple of weeks ago and mentioned that I used
them all the time, and he pointed to me to a sketch he did for SIGGraph on them!
Take a look if you are interested - it's the one entitled "Fast Object
Distribution" on this page: http://www.andrewwillmott.com/s2007

Until I looked at his sketch I hadn't realised the property that each subsequent
value in the sequence is guaranteed to be almost maximally distance from the
previous one, and that you can use that to drive variations like object colour
or size (so the same types of tree are close to each other, but big trees are
always interspersed with small trees, etc). Really fascinating stuff.

I'd love to find the time to write up an article in the Wiki on them for POVRay,
but it's hard finding time with two young kids :-)

Cheers,
Edouard.

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