Hugo Asm nous apporta ses lumieres ainsi en ce 07/07/2004 05:27... :

><snip> Maybe you've used CSG
>"difference" to cut the holes in the floor? That can easily be very slow.
>There are workarounds for it, but too difficult for me to describe right
>now.
>
>Regards,
>Hugo
>
>
>  
>
Instead of punching 81 holes in one box, use 81 small boxes hith 1 hole 
in an union. Place them with a pair of #while loops, then, add some 
narow boxes to thicken the borders. It's a lot faster.

Alain

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