cs224052@brap0aa3 (Scott Draves) (03/24/88)
I need to convert a bitmap into a region, where the region should contain exactly those bits that are black in the bitmap. This is so that I can draw icons with a mask, but I can't use CopyMask, because I want it to print as well. CopyBits is a more standard routine anyway (CopyMask wasn't documented until IM IV). Any ideas? If if I have to mess with the Region datastructure itself, then what is it? Where is it documented? Giga Thanks, Scott Draves PS: Reply to wsd@cs.brown.edu ****
lsr@Apple.COM (Larry Rosenstein) (04/06/88)
In article <24175@brunix.UUCP> cs224052@brap0aa3.UUCP (Scott Draves) writes: > >I need to convert a bitmap into a region, where the region should >contain exactly those bits that are black in the bitmap. This Tech Note #193 (which just came out) talks about a new Quickdraw call BitMapRgn, which does exactly this. The Tech Note says that this is going to be incorporated into a future version of the system, but that you can also contact the Software Licensing department to get an MPW object file that you can link with your program: Software Licensing Apple Computer Inc 20525 Mariani M/S 28-B Cupertino, CA 95014 (AppleLink: SW.License) -- Larry Rosenstein, Object Specialist Apple Computer, Inc. 20525 Mariani Ave, MS 27-AJ Cupertino, CA 95014 AppleLink:Rosenstein1 domain:lsr@Apple.COM UUCP:{sun,voder,nsc,decwrl}!apple!lsr
alibaba@ucscb.UCSC.EDU (Alexander M. Rosenberg) (04/06/88)
Since you know what tech notes are out, could you perhaps list the titles of them? APDA still has not sent anybody I have talked to the January or later Tech Notes. I heard of a total rewrite, but obviously this is not what is causing the delay. Could you favor us with what's new topic-wise, since we (at least me) haven't gotten any in a while???? ------------------------------------------------------------------------------- - Alexander M. Rosenberg - INTERNET: alibaba@ucscb.ucsc.edu - Yoyodyne - - Crown College, UCSC - UUCP:...!ucbvax!ucscc!ucscb!alibaba- Propulsion - - Santa Cruz, CA 95064 - BITNET:alibaba%ucscb@ucscc.BITNET - Systems - - (408) 426-8869 - Disclaimer: Nobody is my employer - :-) - - - so nobody cares what I say. - -
russotto@wam.UMD.EDU (04/19/89)
I've heard that there is a routine available for converting bitmaps to regions (for use in DragGrayRgn for example) Can anyone tell me where to get it, and hopefully, how fast it is for an average 32x32 bitmap. (I looked in the Inside Mac's and it doesn't seem to be a standard ROM call. The tech notes index mentions it, but I don't have the tech note it refers to) -- Matthew T. Russotto russotto@wam.umd.edu DISCLAIMER: Not only does the University not share my opinions, they don't want me sharing my opinions.
jmunkki@kampi.hut.fi (Juri Munkki) (04/21/89)
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. _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ | Juri Munkki jmunkki@hut.fi jmunkki@fingate.bitnet I Want Ne | | Helsinki University of Technology Computing Centre My Own XT | ^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^
darin@Apple.COM (Darin Adler) (04/22/89)
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) > > This seems to be one of the most commonly asked questions in > comp.sys.mac.programmer. The standard answer is that code that does > this is available from the Apple software licensing department (or > something like that). I wonder if anyone of those who asked ever > contacted Apple. There *is* a call, BitMapRgn, available in glue form from the Apple software licensing department. It will also be in a future system software release. It is very fast, based on an algorithm by Andy Hertzfeld that he used to generate regions to drag from icon masks in Servant. (Incidentally, this is the only code in current Apple system software that came from Servant.) -- Darin Adler, System Software Scapegoat, Apple Computer Internet: darin@Apple.com UUCP: {nsc,sun}!apple!darin
shebanow@apple.com (Andrew Shebanow) (04/25/89)
I might add that the BitMapRgn call is already available as part of the recently announced 32Bit Quickdraw package, although it hasn't been documented yet (we're working on it, really...). Andrew Shebanow MacDTS - All Opinions Are Mine, and Mine Alone -