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From: davis@3d.enet.dec.com (Peter Davis)
Newsgroups: comp.graphics,comp.lang.postscript
Subject: Re: How do I draw a depth-cued line in PostScript?
Message-ID: <1991Jun27.164001.2435@engage.pko.dec.com>
Date: 27 Jun 91 16:36:14 GMT
Sender: newsdaemon@engage.pko.dec.com (USENET News Daemon)
Organization: Digital Equipment Corporation
Lines: 17


In article <1991Jun26.140611.1052@canon.co.uk>, ads@canon.co.uk (Adam Billyard) writes...
>The PostScript imaging model has no notion of variable shading over the
>area to be filled. The metaphor is of opaque paint being pushed through
>a stencil. Display PostScript extends this a little by including
>transparency, ...

Really?  How?  I've been working with Display PostScript for a while, and I have
come across nothing that either explicitly or implicitly allows transparency.
The only way to achieve transparent effects that I know of it to fill with a
stipple pattern using imagemask, but this is possible in regular as well as
Display PostScript.

Can you explain?  This would be very VERY useful.

Thanks.
-pd