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From: jmunkki@kampi.hut.fi (Juri Munkki)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Bitmap to region conversion
Message-ID: <21400@santra.UUCP>
Date: 20 Apr 89 23:10:39 GMT
References: <8904181853.AA00466@vs08csc.UMD.EDU> <21369@santra.UUCP>
Sender: news@santra.UUCP
Reply-To: jmunkki@kampi.hut.fi (Juri Munkki)
Organization: Helsinki University of Technology, Finland
Lines: 33

In article <21369@santra.UUCP> jmunkki@kampi.hut.fi (Juri Munkki) writes:
>In article <8904181853.AA00466@vs08csc.UMD.EDU> russotto@wam.UMD.EDU writes:
>>I've heard that there is a routine available for converting
>>bitmaps to regions (for use in DragGrayRgn for example)
>
>I decided that we needed a better answer. It took me two hours to write
>a program that does the conversion on an aribitrary bitmap. I wrote it
>in LSC and it is totally unoptimized (with calls like BitTst), but it
>seems to work. It is under 200 lines in size (it also contains a test
>program & code that draws a picture into a bitmap).

I have already gotten a few requests for it, so I'm making available by
anonymous ftp from vega.hut.fi (128.214.3.82). There are two files:

	pub/mac/finnish/bitrgn.c		Source code	(Think C)
	pub/mac/finnish/bitrgn.rsrc.bin		Test resources	(ResEdit)

Please note that the resource file in in MacBinary format. You have to
set the binary mode to transfer it correctly.

Unless someone objects, I will post it here when a few people have confirmed
that it really works and that they find it useful. If you do not have ftp
access, wait for the posting or tell me (mail) that you would like to see
it posted. Since the region data structure is not public, I would like someone
from Apple to read it before everybody starts using it.

The source code doesn't really document the region data structure well enough
for anyone to understand it. I might write a description, if I find the time.

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|     Juri Munkki jmunkki@hut.fi  jmunkki@fingate.bitnet        I Want   Ne   |
|     Helsinki University of Technology Computing Centre        My Own   XT   |
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