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From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: GlobalToLocal() LocalToGlobal() information
Message-ID: <16024@hoptoad.uucp>
Date: 10 Mar 91 21:57:37 GMT
References: <3744.27CD13AE@stjhmc.fidonet.org> <23417@well.sf.ca.us> <1991Mar7.203748.20407@jato.jpl.nasa.gov>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Electronics for Imaging, San Bruno CA
Lines: 18

In article <1991Mar7.203748.20407@jato.jpl.nasa.gov>
dundas@granite.Jpl.Nasa.Gov (John Dundas) writes:
>In MPW, the following macros perform the equivalent function to their
>ROM counterparts.
>
>#define	GLOBALTOLOCAL(_pt)	(((Point * )(_pt))->h += qd.thePort->portBits.bounds.left), \
>				(((Point * )(_pt))->v += qd.thePort->portBits.bounds.top)
>#define	LOCALTOGLOBAL(_pt)	(((Point * )(_pt))->h += -qd.thePort->portBits.bounds.left), \
>				(((Point * )(_pt))->v += -qd.thePort->portBits.bounds.top)

Except on color systems, on which they give nonsensical results....
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com

"Every year, thousands of new Randoids join the ranks.  Most tend to be either
 too-rich self-made tycoons or picked-on computer nerds (the romantic, heroic
 individualism of Rand's novels flatters the former and fuels the latter's
 revenge fantasies)." -- Bob Mack, SPY, July 1989