Re: Adjusting a slur after line break

[Simon Albrecht]

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