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- Newsgroups: comp.sys.next.misc
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!zazen!anderson
- From: anderson@macc.wisc.edu (Jess Anderson)
- Subject: Re: Loginwindow tiffs
- Message-ID: <1992Dec23.125412.6083@macc.wisc.edu>
- Sender: news@macc.wisc.edu (USENET News System)
- Organization: Madison Academic Computing Center, UW-Madison
- References: <17691@umd5.umd.edu> <1992Dec23.033251.9950@macc.wisc.edu> <168C6220.UC512052@mizzou1.missouri.edu>
- Date: Wed, 23 Dec 92 12:54:12 GMT
- Lines: 39
-
- In article <168C6220.UC512052@mizzou1.missouri.edu>
- uc512052@mizzou1.missouri.edu (David K. Drum) writes:
-
- >In article <1992Dec23.033251.9950@macc.wisc.edu>
- >anderson@macc.wisc.edu (Jess Anderson) writes:
-
- >>In article <17691@umd5.umd.edu> matthews@oberon.umd.edu
- >>(Mike Matthews) writes:
-
- >>>While we're on the subject of loginwindow tiffs, anyone
- >>>know how to get alpha into those puppies?
-
- >>>I know how to do it in Icon, and I know the image had
- >>>alpha, but it doesn't look like it makes a difference.
-
- >>Yer right, no alpha. Don't know why that is. Sure is a big
- >>pain in the butt, though.
-
- >And another thing about alpha (other than the fact that it
- >doesn't work): How come some programs interpret alpha (when
- >there is no alpha) as black, and sometimes as white? Icon,
- >bless its heart ;-), does it both ways in different sections
- >of the program!
-
- 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.
-
-
- --
- [Jess Anderson <> Madison Academic Computing Center <> University of Wisconsin]
- [Internet: anderson@macc.wisc.edu <-best, UUCP:{}!uwvax!macc.wisc.edu!anderson]
- [Room 3130 <> 1210 West Dayton Street / Madison WI 53706 <> Phone 608/262-5888]
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