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From: jason@ux1.cso.uiuc.edu (char *myName)
Newsgroups: comp.sys.mac.programmer
Subject: Re: rgn rotation
Message-ID: <1990Sep30.005339.3564@ux1.cso.uiuc.edu>
Date: 30 Sep 90 00:53:39 GMT
References: <111972@tiger.oxy.edu> <34387@cup.portal.com>
Organization: University of Illinois at Urbana
Lines: 22

jwhitnell@cup.portal.com (Jerry D Whitnell) writes:

>The region format is relativly straight forward.  It is basically a set
>of "inversion points", where each inversion point causes all bits below and
>to the right to be inverted from their current state.  So rotating to
>multiples of 90 degrees should be straight-forward.  Rotating to an
>arbitrary angle is more difficult since you have to essentially do a polygon
>fill and convert back to the region format.

>If you need more information on the region format, let me know and I'll
>write a short note on it.

>Jerry Whitnell
>SuperMac Technology

Yes!  I would love to know more.

-- 

                       |  |    |====================|
                       |  |    | Jason Watts        |
                     \ |\ |\ \ | (jazzin@uiuc.edu)  |