EnigmA Amiga Run 1997 July/EnigmA AMIGA RUN 20 (1997)(G.R. Edizioni)(IT)[!][issue 1997-07 & 08][EAR-CD IV].iso/lightwave/lwmlist/95.lightwave-07/[e-mail]_Thu Jul 20 16:40:13 1995.msg

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Date: Thu, 20 Jul 1995 19:45:04 -0400 (EDT)
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Subject: Re: Points to Polys again?
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On Thu, 20 Jul 1995 [e-mail] wrote:

>    I'm still having problems using Boolean-intersect.  I assumed it would work,
>  but it still didn't.  I started from scratch with a simple object (cube) in
>  layer 1 and a few points in layer 2.  Converted points to polys using macro,
>  and confirmed that they were polygons.  I put the points in the background and
>  the cube in the foreground with just a few INSIDE the cube (Yes, inside). I ran
>  the intersect operation, and the cube vanishes and leaves behind NO points!
>  So, I decided to check using a cube and sphere, it works great.

Boolean operations work best when using objects that have fully enclosed
volumes (every part of the object has polygons covering it) and the
polygons are pointing outwards.

Using object with non-aligned polygons or single/double point polygons
will yield unpredictable results...you may be able to get them to work
properly in some situations and they may not work at all in other
situations.

I'm not totally clear on what you're trying to do, but it sounds like you
want to have words composed of a bunch of single point polygons.  On the
Amiga there is an Arexx script that will do this very easily and I assume
that there will eventually be a plugin for the other versions of
LightWave, but for now you might want to try the following procedure to
get the desired results:

Make your text object, extrude it, and boolean subtract it from a solid
block so that you have the text carved into a block.  Go to a different
layer and put the text block layer in the background...make a bunch of
single point polygons that intersect with the area where your text is
carved into the block.  Use the boolean subtract tool to cut away any
single point polygons that intersect with the remaining pieces of the
block.  I just tried it on LightWave 3.5 for the Amiga and it worked
fine...Boolean Subtract operations are a little more reliable than other
Boolean operations.

Hope this helps!

                                      -David Warner
                                       Event Horizon Graphics




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