Hello Marc, I think to base the volta brackets on the bar line horizontal origin (where differnt sized bar lines in different staves are aligned together) is the best solution. I expect, based on this a 'linear transformation' can do the rest of the job.
I just started my trials with a callback to shift the volta brackets depending on the current context. In an alist 'my-volta-bracket-horizontal-adjustments' I setup the 'linear transformation values', which are evaluated by my-volta-bracket-shorten-pair, which is defined as callback for 'VoltaBracket #'shorten-pair'. There are 4 'tranformation value lists' per bar type - for left and for right hook, and for begin/end of line and for middle of line. I hope, you can use much of this code to include in scm/bar-line.scm. In my trials I observerd some more 'future work': - If you modify the bar line size properties, some (especially the segno) may run out of shape - I got diffent volta brackets at the same time (in different staves) - perhaps a new detected bug. Here is my test example: http://lilypond.1069038.n5.nabble.com/file/n132047/volta-hook-alignment.ly volta-hook-alignment.ly ArnoldTheresius -- View this message in context: http://lilypond.1069038.n5.nabble.com/exact-placement-rules-for-volta-brackets-tp131790p132047.html Sent from the Dev mailing list archive at Nabble.com. _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel
