From: Mojca Miklavec <mojca.miklavec1@email.si>
Subject: shading in meta[post/play] & PDF
Date: Sat, 15 Jan 2005 06:16:48 +0100 [thread overview]
Message-ID: <41E8A740.7010703@email.si> (raw)
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There's a wonderful tutorial on drawing 3D graphics in PostScript on
http://www.math.ubc.ca/~cass/graphics/manual/, specifically
http://www.math.ubc.ca/~cass/graphics/manual/code/doughnut.eps as an
example.
And there's a detailed description on shading in PostScript in
http://partners.adobe.com/public/developer/en/ps/PLRM.pdf, page 259
(I attached an example and have some more on computer if anyone is
interested; I downloaded them from Adobe, but don't know the URL any
more) or on shading in PDF in
http://partners.adobe.com/public/developer/en/pdf/PDFReference16.pdf,
page 272. (They're basically the same.)
In metapost, "perfect" spheres can be drawn, like on
http://www.gnu.org/software/3dldf/cdsmpls.html. But how can I add colour?
Even if it would be too tricky to add colour and proper shading on the
sphere - Is there any possibility to use advanced shading techiques
described in PLRM inside metapost/metaplay for the most simple cases,
say, like in the attached example? Metaplay allows circular and gradient
shading and no others. I don't mind if I had to hard-code the shading.
PSTricks allows some more advanced shading techniques and even direct
PostScript code integration (with \special I think). Is anything similar
possible in metapost/play?
The spheres drawn directly in PostScript as in the examples above still
have straight lines (well, I agree that with some mathematics it would
be possible to draw them with proper splines as well).
Thanks for all the suggestions,
Mojca
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next reply other threads:[~2005-01-15 5:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-15 5:16 Mojca Miklavec [this message]
2005-01-15 21:04 ` [metapost] " Laurence Finston
2005-01-19 10:00 ` Mojca Miklavec
2005-01-19 10:59 ` Laurence Finston
2005-01-19 11:48 ` Hans Hagen
2005-01-20 23:47 ` Mojca Miklavec
2005-01-21 20:55 ` h h extern
2005-01-22 1:36 ` Mojca Miklavec
2005-01-15 22:02 ` [metapost] " Laurence Finston
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