> This is traced in the usual way, but the y-values that are found are not 
> used
> to place objects anywhere; rather, they are used to statistically(?) 
> determine
> whether an object is made or not made at any particular x/z location...a 
> sort
> of 'chance' determination, with a HF height of 0 being a zero% chance that 
> an
> object is made, up to 1 being a 100% chance.

I use this method currently too, in a game to place trees and things around 
the level.  *But*, when you have large areas of low-density, and you want to 
plant thousands of items, it starts to get slow (because there are so many 
"misses").  I am wondering if there is a faster way to do it?

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