Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!snorkelwacker!usc!zaphod.mps.ohio-state.edu!wuarchive!udel!mmdf
From: Hartupee.Pasa@xerox.com
Newsgroups: comp.sys.amiga
Subject: Re: (Non) Square Pixels?
Message-ID: <11026@baldrick.udel.EDU>
Date: 13 Feb 90 15:05:14 GMT
Sender: mmdf@udel.EDU
Lines: 30


My two cents worth.

/*----------------------------------------------------------------------*
 * ILBM.H  Definitions for InterLeaved BitMap raster image.     1/23/86
 *
 * By Jerry Morrison and Steve Shaw, Electronic Arts.
 * This software is in the public domain.
 *
 * This version for the Commodore-Amiga computer.
 *----------------------------------------------------------------------*/

/* Aspect ratios: The proper fraction xAspect/yAspect represents the pixel
 * aspect ratio pixel_width/pixel_height.
 *
 * For the 4 Amiga display modes:
 *   320 x 200: 10/11  (these pixels are taller than they are wide)
 *   320 x 400: 20/11
 *   640 x 200:  5/11
 *   640 x 400: 10/11		*/
#define x320x200Aspect 10
#define y320x200Aspect 11
#define x320x400Aspect 20
#define y320x400Aspect 11
#define x640x200Aspect  5
#define y640x200Aspect 11
#define x640x400Aspect 10
#define y640x400Aspect 11

Ken