Article View: comp.sys.ibm.pc
Article #41498Re: Converting MAC to IBMPC format
From: Michael Thomas Niehaus
Date: Fri, 02 Feb 1990 17:10
Date: Fri, 02 Feb 1990 17:10
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A MacPaint file does basically contain a bit map that corresponds to a
complete page (8.5 by 11) at 72 d.p.i. (so you can figure out the full
resolution yourself). Most people tend to work in the upper left of this
area.
There is a difficulty, though. The MacPaint file is encoded using a
simple compression algorithm that is built into the Mac operating system.
(The routine is called PackBits.) This routine basically uses a repeat packing
method that compresses when three or more consecutive equal bytes are
encountered. (As to how this is represented, I don't know. It should be
easy to figure out, though.)
-Michael
--
Michael Niehaus UUCP: <backbones>!{iuvax,pur-ee}!bsu-cs!mithomas
Apple Student Rep ARPA: mithomas@bsu-cs.bsu.edu
Ball State University AppleLink: ST0374 (from UUCP: st0374@applelink.apple.com)
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!iuvax!bsu-cs!mithomas From: mithomas@bsu-cs.bsu.edu (Michael Thomas Niehaus) Newsgroups: comp.sys.ibm.pc Subject: Re: Converting MAC to IBMPC format Keywords: graphics Message-ID: <10689@bsu-cs.bsu.edu> Date: 2 Feb 90 17:10:34 GMT References: <484464f0.144c9@byzantine.UUCP> <64JsD1w160w@gendep> Reply-To: mithomas@bsu-cs.UUCP (Michael Thomas Niehaus) Organization: CS Dept, Ball St U, Muncie, Indiana Lines: 18