Path: utzoo!attcan!uunet!wuarchive!zaphod.mps.ohio-state.edu!rpi!uupsi!eye!erich
From: erich@eye.com (	Eric Haines)
Newsgroups: comp.graphics
Subject: Re: bit masks
Message-ID: <1990Sep05.142627.3478@eye.com>
Date: 5 Sep 90 14:26:27 GMT
References: <23900013@sunb4>
Reply-To: erich@eye.com (	Eric Haines)
Organization: 3D/Eye Inc., Ithaca, NY
Lines: 60

In article <23900013@sunb4> mcooper@sunb4.cs.uiuc.edu writes:
>
>I'm looking for an algorithm (or C code, of you have it) to generate
>16 x 16 bit masks.  Ideally, I should be able to specify a percentage and
>the program should spit out the pattern filled appropriately.
>
>ie.
>
>100% yeilds
>
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>1111111111111111
>
>This is no problem to write,m but the simple way gives you nasty artifacts such
>as:  25 % yeilds
>
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>1000100010001000
>
>
>Does anyone have code that will properly randomize this stuff to avoid the
>inevitable artifacts and moire patterns?
>
>
>+-------------------------------------+---------------------------------------+
>|  "When the going gets weird,        |                                       |
>|              the weird turn pro."   |  Marc Cooper	marcc@ncsa.uiuc.edu   |
>|		  		      |  National Center for Supercomputing   |
>|		 -Hunter S. Thompson  |		    Applications	      |
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