Hi, > > Here is what I found. For -dev xwin; -dev psc -drvopt text=0; -dev png > -drvopt text=0; and -dev wxwidgets -drvopt freetype=0 the underscore is > replaced by a (very) short dash. All those cases involve our traditional > Hershey fonts. From this evidence I believe there is something > fundamentally wrong with those fonts for the underscore character. > > One possibility was that our binary form of Hershey fonts somehow got > clobbered in the underscore position accidentally in our CVS days, in the > CVS to svn transition, or during the svn era since. However, that turns > out > not to be the case. I just (revision 9370) tweaked our build system to > optionally (by default this is turned OFF) build programmes to generate > the > binary form of our Hershey fonts. (This was an interesting historical > exercise. I consulted the plplot-5.0.0 build directions [from our build > system from three generations ago!] to help figure out how to build those > programmes.) See fonts/README for directions on how to use our build > system > to build the programmes to generate our Hershey fonts). When I ran those > programmes, the results were absolutely identical with data/plstnd5.fnt > and > data/plxtnd5.fnt that were generated more than 8 years ago. > > Another possibility is the directions for creating the Hershey underscore > glyph are just plain wrong. (It could be missing as well, but then I > don't > think you would be seeing the short dash.) I had a look at the code in > the > fonts subdirectory that generates the Hershey fonts, and it is > essentially > undocumented. Therefore, it is going to take some effort to figure out, > for > example, the correspondence between any given glyph (such as underscore), > and the data (pen positions I assume for drawing the glyph) that is > given in > the source code. I don't have time for such an effort (especially > because > our Hershey fonts are gradually being replaced by TrueType or Type 1 > fonts > for most of our devices). However, if somebody wants to make the effort > to > figure out the Hershey underscore problem, I would be happy to apply the > fix.
I also have other things now on my todo list, but some time ago I was interested what I could find on the internet about the Hershey fonts, and I found some links which may be helpful: * http://www.codeproject.com/KB/GDI/hersheyfont.aspx * http://emergent.unpythonic.net/software/hershey * http://www.efg2.com/Lab/OtherProjects/Hershey.htm - this seems to be an editor, which allows to edit hershey fonts HTH, Werner -- Dr. Werner Smekal Institut fuer Allgemeine Physik Technische Universitaet Wien Wiedner Hauptstr 8-10 A-1040 Wien Austria DVR-Nr: 0005886 email: [email protected] web: http://www.iap.tuwien.ac.at/~smekal phone: +43-(0)1-58801-13463 (office) +43-(0)1-58801-13469 (laboratory) fax: +43-(0)1-58801-13499 ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Plplot-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/plplot-general
