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Subject: 
Re: Cone primitives
Newsgroups: 
lugnet.cad.dev
Date: 
Tue, 11 May 1999 22:00:20 GMT
Viewed: 
526 times
  
Optional lines should actually be called "conditional lines."  They are used to
model rounded surfaces so that the edge-lines only appear if they form the
outer boundary of the rounded surface.

If you think of a cylinder, you want edge-lines to show at the extremeties of
the cylinder no matter how the cylinder is turned.  However, you don't want
edge-lines showing if they are on the interior or it would look like a16-agon
(which it actually is) rather than the rounded cylinder you are trying to
model.

Hope this makes sense,

-John Van

Jeff Stembel <Dragonelf1@aol.com> wrote in message
news:FBKwD5.AGy@lugnet.com...
In lugnet.cad.dev, John VanZwieten writes:
I just realized the 1-4con3.dat and 1-4con4.dat don't have optional lines in
them.  Is there a reason for this, or is it just an oversight?

-John Van

Just out of curiosity, what are 'optional lines'?

Jeff



Message is in Reply To:
  Re: Cone primitives
 
(...) Just out of curiosity, what are 'optional lines'? Jeff (25 years ago, 11-May-99, to lugnet.cad.dev)

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