Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!ulysses!andante!mit-eddie!bloom-beacon!tut.cis.ohio-state.edu!mailrus!nrl-cmf!cmcl2!yale!spolsky-joel From: spolsky-joel@CS.YALE.EDU (Joel Spolsky) Newsgroups: comp.sys.next Subject: Re: WYSIWYG Keywords: WYSIWYG Message-ID: <41004@yale-celray.yale.UUCP> Date: 22 Oct 88 06:52:12 GMT References: <6937@orstcs.CS.ORST.EDU> <12908@oberon.USC.EDU> <6637@batcomputer.tn.cornell.edu> <25354@tut.cis.ohio-state.edu> Sender: root@yale.UUCP Reply-To: spolsky-joel@CS.YALE.EDU (Joel Spolsky) Organization: Yale University Computer Science Dept, New Haven CT 06520-2158 Lines: 45 In article <25354@tut.cis.ohio-state.edu> bob@allosaur.cis.ohio-state.edu (Bob Sutterfield) writes: | In article <6637@batcomputer.tn.cornell.edu> cloos@tcgould.tn.cornell.edu (James H. Cloos Jr.) writes: | | (BTW, as to why I think they wanted 100 dpi on the monitor: converting 100 | | to 300 or 400 is considerable easier than converting 94.3 to 300 or 400. | | Neither engine's rendering properties | matter, nor does the ratio between the two. Well, not entirely true. A font that looks good in 100dpi will look much the same in 400dpi, however, a font that looks good in 94.3 might look a bit weird in 400 due to rounding errors. This is more of a problem scaling down to courser resolutions. For example, if in 400 resolution we have: 111100001111 (note that each line is exactly the same width) Then in 100 resolution we have 101 (equality is preserved). BUT, in 150dpi resolution (for example), we happen to need exactly 1.5 dots in each field, and the rounding might be resolved unequally: 1011 Yes, I know that these rounding errors will occur whenever you rasterize postscript, however, at least you can be sure that if something looks good on the screen, it will look much the same printed. So, if you have two hairlines that are 1 pixel each on the screen, you can be sure that one will not be printed as 3 pixels and the other as 4 pixels. (If you think this is a moot point, look at how bad unevenly scaled fonts look in Microsoft Windows or the MacIntosh. In the former the same letter is often represented two different ways on the screen). another random thought from +----------------+---------------------------------------------------+ | Joel Spolsky | bitnet: spolsky@yalecs uucp: ...!yale!spolsky | | | arpa: spolsky@yale.edu voicenet: 203-436-1483 | +----------------+---------------------------------------------------+ #include