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From: cb1p+@andrew.cmu.edu (Chris Beasley)
Newsgroups: comp.sys.amiga
Subject: Re: Optical Mice
Message-ID: <gaDht_u00WB3824K9w@andrew.cmu.edu>
Date: 2 May 90 13:19:06 GMT
Organization: Mathematics, Carnegie Mellon, Pittsburgh, PA
Lines: 11


The WORST thing about optical mice..
not only do they need that optical grating pad, they must be orthogonal
to it to achieve the correct motion:  place your optical mouse diagonally
on the pad and move it in the x and y directions with respect to it's own
coordinate frame.  The pointer on the sreen moves diagonally.  A rolling
(mechanical) mouse will properly transmit the information relative to
it's own coordinate frame, not the coordinate frame of the mouse pad.

Sorry but this has gotten to be a bit of a peeve for me.
CB