Patterns

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#3839

From: Con Neri
Date: Thu, 06 Dec 1990 01:14

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I am trying to implement a generalised pattern fill in postscript but am having
a few problems. I am implementing a methods similar to prog 15 in the blue book
but with larger patterns. It seems that with the larger patterns the frequency
passed to the setscreen operator is ignored and some default value is used.
There are no errors generated at all and the point at which the expected 
frequency and the true frequency differ is different for a different device of
the same resolution., ie
	LaserWriter
	LaserWriter +
	DataProducts 1200
	Hyphen Software Rip (@300 dpi).

Can someone please shed some light on this phenomena? Has anybody else done
any serious work with patterns? Please either e-mail or send to this group. If
there is enough response I will summarise.

Thanks in advance
CON NERI

All Graphic R+D				e-mail: cn@allgfx.agi.oz.au
49-53 Barry ST				tele:   +61-3-3471722
Carlton					fax :	+61-3-3472175
Vic 3053			
AUSTRALIA

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!munnari.oz.au!mel.dit.csiro.au!agi.oz!cn
From: cn@allgfx.agi.oz (Con Neri)
Newsgroups: comp.lang.postscript
Subject: Patterns
Message-ID: <1990Dec6.011452.12835@allgfx.agi.oz>
Date: 6 Dec 90 01:14:52 GMT
Organization: All Graphic R+D
Lines: 24