home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.next.misc
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!swrinde!emory!sol.ctr.columbia.edu!mizzou1.missouri.edu!UC512052
- From: UC512052@mizzou1.missouri.edu (David K. Drum)
- Subject: Re: Loginwindow tiffs
- References: <17691@umd5.umd.edu> <1992Dec23.033251.9950@macc.wisc.edu> <168C6220.UC512052@mizzou1.missouri.edu> <1992Dec23.125412.6083@macc.wisc.edu>
- Sender: nobody@ctr.columbia.edu
- Organization: University of Missouri
- Date: Thu, 24 Dec 1992 05:48:19 GMT
- Message-ID: <168C614ECC.UC512052@mizzou1.missouri.edu>
- X-Posted-From: mizzou1.missouri.edu
- NNTP-Posting-Host: sol.ctr.columbia.edu
- Lines: 30
-
- In article <1992Dec23.125412.6083@macc.wisc.edu>
- anderson@macc.wisc.edu (Jess Anderson) writes:
-
- > <stuff about alpha value setting deleted>
- >
- >My model of that (don't know if it's right) is that you can
- >write 0% of any color you like (white and black being the
- >easiest ones to get from the monochrome picker). Since the
- >on-screen appearance is the same in either case (within
- >Icon, I mean), you don't know what you're doing unless you
- >make a careful, conscious choice. Then, presumably, if the
- >alpha information is ignored, the underlying color
- >information (setgray in PostScript, for example) remains.
-
- No, no, no. I am always very careful about always selecting 0R 0G 0B 0A
- when I want something transparent. I know this because I always have to
- think about it; in the Persistence of Vision raytracer (which I use a lot),
- one has to use 1R 1G 1B 1A to get something transparent. So every time
- I have this situation I must remember which program I am using. Icon
- still insists on changing alpha to white or black, depending.
-
- Also, irritatingly enough, after I create an image with alpha in Icon
- (and save with alpha, thank you) and try to import it into another picture,
- Icon refuses to recognize the alpha values that I saved. Rrrrrr.
-
- Regards and Merry Winter Solstice,
-
- David K. Drum
- uc512052@mizzou1.missouri.edu
- "I will only use a raytracer to which I can obtain the source code!"
-