I'd like to be able to make a hexagonal grid for use in making maps. 
Making square grids for maps is easy enough with gradient x/gradient z, 
but I can't figure out how to make a hexagonal grid. The hexagonal 
pattern is not for grids but for solid hexagons.

You can see an example of what hexagonal grids look like at:

http://www.godsmonsters.com/Master/image003.gif

Is there a way of making such a pattern? Perhaps using functions?

Standard POV or MegaPOV are both fine. (I vaguely remember someone 
making a few more shapes for patterns a while back, though I don't know 
that hexagons were among them.)

Jerry
-- 
http://www.hoboes.com/jerry/
"Give a man a fish and you feed him for a day. Teach him to fish, and you've
depleted the lake."--It Isn't Murder If They're Yankees
(http://www.hoboes.com/jerry/Murder/)

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