Hi Harm,

On Fri, Dec 2, 2011 at 7:06 PM, Thomas Morley <thomasmorle...@googlemail.com
> 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...

-David

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