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From: cannon@tornado.dsd.es.com (Gary Cannon)
Newsgroups: comp.graphics
Subject: Re: PHIGS and PHIGS+ information wanted
Message-ID: <1991Apr29.171641.18605@dsd.es.com>
Date: 29 Apr 91 17:16:41 GMT
References: <1991Apr26.155736.2066@Stardent.COM>
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Reply-To: cannon@tornado.dsd.es.com (Gary Cannon)
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Two comments:
In article <1991Apr26.155736.2066@Stardent.COM>, jch@Stardent.COM (Jan Hardenbergh) writes:
> 
> From: blau@osceola.cs.ucf.edu (Brian Blau)
> > I am looking for information on PHIGS and PHIGS+.  A few references or a
> > short description of these two graphics standards would be helpful.
> 
> PHIGS-PLUS (nee' PHIGS+) is an addendum to PHIGS.  The original ANSI
> standard X3144-1988 (PHIGS88) is being "obsoleted" in favor of the
> IDENTICAL ISO9592 (PHIGS89).
> 
> So, PHIGS refers to both.

PHIGS PLUS is a new Part 4 to PHIGS and addenda to Parts 1-3. This means that an
implementation can be parts 1-3 compliant and not Part 4. Addendum requires 
compliance for all implementations. PHIGS PLUS need not be supported to be
PHIGS Parts 1-3 compliant.

> 
> The PHIGS88 spec... They can sell you ISO9592, too.
> 
> And PHIGS88: Computer Graphics-Programmer's Hierarchical Interactive
> Graphics System (PHIGS) Functional Description...  ANSI Standard
> X3.144-1988. (Language bindings are X3.144.x, where x=1 (FORTRAN), 2
> (PASCAL), 3 (ADA), 4 (C).)
> 

PASCAL was dropped but the numbers you give are still correct.

> -- 
> -Jan "YON" Hardenbergh       jch@stardent.com         (508)-371-9810x261
> Stardent Computer, 6 N.E. Tech Center, 521 Virginia Rd,Concord, MA 01742

--
 ---		Gary G. Cannon
 ---		Evans & Sutherland
 ---		cannon@dsd.es.com