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From: klee@wsl.dec.com (Ken Lee)
Newsgroups: comp.windows.x
Subject: Re: Bitmap scaling in X
Keywords: X blit scale stretch bitmap pixmap
Message-ID: <1990Sep11.100202@wsl.dec.com>
Date: 11 Sep 90 17:02:02 GMT
References: <20200@well.sf.ca.us>
Sender: news@wrl.dec.com (News)
Reply-To: klee@wsl.dec.com
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Organization: DEC Western Software Laboratory
Lines: 17

In article <20200@well.sf.ca.us>, brent@well.sf.ca.us (Brent Southard) writes:
|> Are there any functions in the X toolkit to provide for the scaling of
|> bitmaps (pixmaps, actually, I suppose)?  If not, what are the methods most
|> people are employing to quickly provide this capability over a range of
|> hardware?

Most graphics extensions to X, such as Display PostScript and PEX, have
facilities for image scaling.  If you want to do this by hand, most
books on computer graphics discuss something like "geometric
transformations of images".  The latest Foley & VanDam book has
pseudocode for some of the simpler algorithms.

-- 
Ken Lee
DEC Western Software Laboratory, Palo Alto, Calif.
Internet: klee@wsl.dec.com
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