Am So., 17. Feb. 2019 um 20:57 Uhr schrieb Carl Sorensen <c_soren...@byu.edu>: > > > > On 2/16/19, 7:22 PM, "edes" <e...@gmx.net> wrote: > > > Hello, list. > > Some time ago I reported a bug with modern-straight and flat flags, and it > was accepted as issue 5412: > > https://sourceforge.net/p/testlilyissues/issues/5412/ > > I only have a very basic knowledge of lilypond, but I assume that this > problem happens at the font level, and that there is no way to improve the > output by tweaking the lilypond code? > > It turns out that the straight family of flags is actually implemented in > scheme. > > The file is scm/flag-styles.scm > > The thicknesses are hard-coded at lines 111 (modern-straight-flag), 117 > (old-straight-flag), and 122 (flat-flag). > > The names of the variables (which show up only as numbers in these calls) are > found at line 60. > > Unfortunately, at this point there does not appear to be any grob property > for the thickness, so there is not a straightforward override. You'll need > to edit the scheme file. Or, you could define your own straight flag style > by copying (and altering) one of the flag definitions. > > If you get some better numbers, and especially if you have some evidence from > nicely-engraved scores, it's likely that we would replace the defaults. > > Thanks, > > Carl
Hi Carl, I'm currently working on it. Better default values are easy to obtain: #(define-public (flat-flag grob) "Flat flag style. The angles of the flags are both 0 degrees" ((straight-flag 0.48 0.81 0 1.0 0 1.0) grob)) Though, there is a design-decision we need to do. Currently the straight-flags are modeled like default Flag-glyphs. This means if there are more than 3 flags the spacing is not adjusted (like for beams). Furthermore the end of the stem and flag match exactly, as opposed to beams (at least they should, there's a small discrepancy, already reported by the OP). If we keep this thinking, than (flat) straight-flags stay different compared to Beams. The OP claims straight-flags, especially flat ones, should behave like Beams. If we follow, than straight-flags need to adjust according to the amount of flags, like Beams. Furthermore they should be placed so that the stem ends in the _middle_ of the first flag, as for beams. Disadvantage would be that a stem with default flag would often have a different visible length compared to a stem with straight flags. Speaking only for myself I think the OP is correct saying flat-flags should behave like Beams, though I don't agree for modern/old-straight-flags. So the question is, which route to follow? I already have code for the mentioned possibilties, but currently I'm not able to do one thing for flat-flag and a different for other straight-flags. In any case the length of beamed and unbeamed Stems is different in many cases. One would need to tackle Stem not Flag, so a different issue, imho. Cheers, Harm _______________________________________________ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
