Urs Liska-3 wrote > What is 'interval-center'?
Hi Urs, Harm already revealed where interval-center is being defined. But why did I use it? A stencil x-extent is a pair of left and right extent, and in order to know the total extent, we'll have to add up (car x-extent) and (cdr x-extent) and divide it by 2 in order to get the centre. This could be done manually or by using interval-center. Using the horizontal centre of both markup and slur, the necessary x-shift can be easily calculated. In this case, it is important to know that ly:stencil-combine-at-edge uses the reference point for alignment and the stencil will stick out to the left if the left extent is negative. The slur has a positive (!) left extent, and that's why it is shiftet to the right with regards to the reference point (at the left edge of the notehead). In your original attempt, centering the slur destroyed this slight shift and moved the whole lot to the left. All the best, Torsten -- Sent from: http://lilypond.1069038.n5.nabble.com/User-f3.html _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user