Article View: comp.lang.postscript
Article #7757Re: Why is Display Postscript Fast when Printer Postscript is Slow?
From: Glenn Reid
Date: Wed, 21 Dec 1988 22:59
Date: Wed, 21 Dec 1988 22:59
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In article <33706@bbn.COM> cosell@BBN.COM (Bernie Cosell) writes: >Should one conclude from this that PostScript on "for real" printers (2000dpi >and up) runs super-duper slow? [After all, 300 is about 20 times as many >bits as 72, but 2000dpi is almost a *thousand* times as many points] Well, no. It isn't the total number of bits, but more the number of calculations required. Think of the "flatness" parameter. If you're filling a rectangle, it doesn't matter much how many DPI you have. If you're reducing a Bezier curve to a bitmap, you have to do more work if the resolution is higher. So yes, it is a factor. But it is nowhere near proportional to the density of device space. Besides, the marking engines run more slowly for higher resolution printers, so no one notices, right? :-) Glenn Reid Adobe Systems Mountain View
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!husc6!purdue!decwrl!adobe!greid From: greid@adobe.com (Glenn Reid) Newsgroups: comp.lang.postscript Subject: Re: Why is Display Postscript Fast when Printer Postscript is Slow? Message-ID: <136@adobe.COM> Date: 21 Dec 88 22:59:07 GMT References: <1481@helios.ee.lbl.gov> <2164@daisy.UUCP> <133@adobe.COM> <33706@bbn.COM> Sender: news@adobe.COM Reply-To: greid@adobe.COM (Glenn Reid) Organization: Adobe Systems Incorporated, Mountain View Lines: 20