On 8/11/2015 10:59 AM, Robin Bannister [via Lilypond] wrote:
> Malte Meyn wrote:
>
> > But unfortunately it doesn’t work properly in 2.19.24 (and 2.18.2)
>
> Yes, I think stems were reworked a lot around 2.16?
>
> Here is that override approach with a duration condition:
> ... (clipped) ...
Looking into the situation, I've found that there isn't a built-in
collision avoidance value but rather a well-tuned set of spacing
parameters (unless an actual beam exists, then collisions are taken care
of). It's quite easy to have the tremolo flags of unbeamed stems cause
collisions with the notehead:
\override Voice.StemTremolo.length-fraction = #1.5
Here's another option that works nicely by adjusting the value for "pad":
\layout {
\override Voice.StemTremolo.after-line-breaking =
#(lambda (grob)
(let* ((*pad 1.0*) % <--- ADJUST THIS TO TASTE
(cnt (ly:grob-property grob 'flag-count))
(stem (ly:grob-object grob 'stem))
(leng (ly:grob-property stem 'length)))
(if (> cnt 2)
(ly:grob-set-property! stem 'length (+ leng pad)))))
}
HTH,
Abraham
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