Re: Slur positions limit?

[Trevor Daniels]

MusFelix wrote Sunday, April 17, 2011 12:53 AM

> While adjusting slurs, I have come across cases where the 
> adjustment doesn't
> take.  I have played around with all of the slur details settings, 
> but
> nothing has worked.  See this example, where the slur should be 
> much higher,
> exaggerated for testing, but is stuck lower:
>
> \version "2.13.51"
> \include "english.ly"
>
> \relative c
> {
>    \clef bass
>    \time 9/8
>    \stemDown
>
>    \once \override Slur #'positions = #'(10 . 10)
>    c,16( e' c' g' c, e, c, e' c' e c e, c, g' e' c' e, g,)
> }
>
> Any suggestions?  Thanks in advance.

A list of possible slur positions is first calculated
based on the positions of the slurred notes.  Then the
best one in this list is chosen by adding up a number
of demerit weights.  Changing the 'positions property
influences which of these pre-computed slurs is selected,
but it cannot select a position which is not included
in the original list.

However, the range of candidate slurs in the initial
list can be increased by extending the 'region-size
property.  If you really want to use positions of
'(10 . 10) you need to increase the 'region-size to
10, like this:

   \once \override Slur #'details #'region-size = #10
   \once \override Slur #'positions = #'(10 . 10)
   c,16( e' c' g' c, e, c, e' c' e c e, c, g' e' c' e, g,)

Alternatively, the precise shape of the slur can be
controlled by specifying the Bezier curve control
points.  See Modifying ties and slurs in the Notation
Reference
http://www.lilypond.org/doc/v2.13/Documentation/notation/modifying-shapes

> (BTW, I am posting this through Nabble; the last 3 times I sent 
> this by
> email, it hasn't shown up.  Anyone know why???)

Did you send it from your registered email address?

Trevor