Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!vsi1!frame!c3po.UUCP!glc
From: glc@c3po.UUCP (Greg Cockroft)
Newsgroups: comp.sys.next
Subject: Re: Pattern fills in Display Postscript
Message-ID: <3625@frame.UUCP>
Date: 16 Jan 90 01:51:23 GMT
References: <7134@lindy.Stanford.EDU>
Sender: news@frame.UUCP
Lines: 20


Checkout  FrameMaker.app/.fminit2.0/next/makerbegin.ps.

search for pattern.

The only way to do fast patterns in NeXTStep, or NeWS is
to tile on offscreen window, and then later clip & do
a window to window copy operation.

The halftoning mechanism method only works if you have
a 1 bit display, because all you get to specify is 
the order to set the dots, not the actual values.

Notice how patterns in FrameMaker documents look 
horrible when previewed, this is because the halftoning
mechanism is being used on printout.


NeWS never implemented halftoning. Not in the PostScript
sense anyway.