On 20 December 2015 at 00:41, Simon Albrecht <simon.albre...@mail.de> wrote:
> On 20.12.2015 00:45, Chris Yate wrote: > >> I can't get /alterBroken to work properly at all on control points. >> >> When I try the "tweak" version, that I assume would look like: >> >> <code> >> >> r4. >> d,16-\alterBroken control-points #'(((0.0 . 0.0) (0 . 1.2) (0 . 1.2) (4 . >> 1)) ((0.0 . 0.0) (0 . 1.2) (0 . 1.2) (4 . 1)) ((0 . 4.0) (0 . 3) (0 . 1) >> (0 . 0)) ) >> (f af cf af bf | >> >> </code> >> >> .... then the slur only appears as a small, and odd-shaped squiggle by >> the first note d. Editing these control points is a bit of hit and miss >> anyway, but I don't feel I understand the syntax for \alterBroken well >> enough; there are too few examples at present! >> > > The big advantage of the shape command is that you can give offsets for > each control point against the default shape. The control-points property > however has every point coded relative to the reference point for the > entire slur (the note head of the first note in the slur, I think), which > often makes numbers very high and trial and error very time-consuming. > > The second argument to \alterBroken is a list. Each of its elements will > be applied to one of the segments of the broken spanner. If you supply less > entries than there are segments, the remaining segments will not be tweaked. > > HTH, Simon > I think I *half* understand what "shape" is doing, but I can't get alterBroken to work for the control points. Can you give a working example? (I only half understand it, but I know the _two pairs_ of numbers at _each_ end of a slur shape, which code for the bezier coordinates, give the four sets of bracketed values. How the numbers work isn't a complete mystery but I've not yet found a better way to determine them than to keep plugging in numbers until it looks good, by iteration. A graphical tool would be WONDERFUL ;-) ). Thanks, Chris
_______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
