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From: gilmore@vax1.acs.udel.EDU (Scott Gilmore)
Newsgroups: comp.graphics
Subject: PHIGS display priorities
Keywords: PHIGS, PPOST, display, view, priority
Message-ID: <6722@vax1.acs.udel.EDU>
Date: 11 Jul 90 15:54:21 GMT
Reply-To: gilmore@vax1.udel.edu (Scott Gilmore)
Distribution: usa
Organization: University of Delaware
Lines: 18

Does anyone know what the PHIGS standard defines as the structure display 
priority range (last argument to PPOST in Fortran binding)?  I have looked
through the official ANSI functional description, as well as the October 1987
draft ANSI Fortran-PHIGS binding document, and cannot find any mention of the
valid range.

I am using Template's FIGARO and IBM's graPHIGS.  The FIGARO version 1 manual 
defines the range from 0.0 -> 1.0, FIGARO version 2 defines it as -1.0 -> 31.0,
graPHIGS prioritizes by view rather than structure.  No agreement anywhere.

I am writing a Fortran application which must adhere as closely as possible
to the ANSI standard for PHIGS.  Any information would be greatly appreciated.
Although I do read this group daily, Email responses are preferred unless you 
feel it is of general interest.
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Scott Gilmore                                       gilmore@vax1.udel.edu
Mechanical Engineering and Center for Composite Materials, U. of Delaware