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From: jdonsbac@reverie.Prime.COM (Jeff Donsbach)
Newsgroups: comp.graphics
Subject: Re: CGM HLHSR in SunPHIGS
Message-ID: <1537@cvbnetPrime.COM>
Date: 29 May 91 19:34:19 GMT
References: <1991May28.194621.13640@dsd.es.com>
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From article <1991May28.194621.13640@dsd.es.com>, by rthomson@mesa.dsd.es.com (Rich Thomson):
> 
> This tells me that although the MO workstation is not just another
> workstation, it does follow the mechanism of traversal and records 2D
> pictures.  This is why HLHSR has no meaning here -- after traversal,
> all hidden lines and surfaces are already removed.
> 
> If you want to maintain HLHSR information in some archived format of
> the structure, use archive files.
> 

Rich,
	If you go back and re-read Bill's original question, he was
asking if the SunPHIGS CGM workstation did what you expect it to do - 
remove hidden lines and surfaces from the 2D picture for plotting purposes.
He is not trying to maintain that info. The problem is that the SunPHIGS
CGM workstation type does not do hidden line and surface removal. We have
asked SUN for this capability but they have not committed to implementing it.

-Jeff

==========================
Jeff Donsbach, Computervision,  A Prime Computer Company, Bedford, MA 
UUCP: {decvax|linus|sun}!cvbnet!jdonsbac | Internet: jdonsbac@cvbnet.prime.com
"Hermits have no peer pressure" - Steven Wright