On Fri, Dec 2, 2011 at 7:06 PM, Thomas Morley
<address@hidden> wrote:
But now there's a new problem. Sometimes I've to notice a very small, but visible displacement of the NoteColumn, if KeyCancellation is left bound and a new Clef is right bound (mes. 5 of the full test). And I can't figure out what's the difference between this measure and measure 7 of the full test or measure 2 of the tiny example.
Any hint?
For testing, I added a little function which moves a vertical line to the horizontal position you want it. Placing the red line at the coordinates you use to center the note column, and at the average of these coordinates--I altered your log display--it looks to me like you are truly using the point dead center between the right of the left bound (KeyCancellation) and the left of the right bound (Clef). It looks as though it is the multi-measure rest which is a little bit left-of-center here, but I don't know how the position of the multi-measure rest is reckoned.
(It would be nice to "tap into" the mechanism for centering full-measure rests to use in your function, but I don't have any idea how this could be done.)
BTW, is there any possibility to address a cross-staff-arpeggio with this function to get rid of the additional arpeggio-override?
I don't have an answer for this, but I do notice that there are some problems here with the relative positioning of accidentals, noteheads, and dots.
Sorry I can't be more helpful...
center-note-column-10rev.ly