Hi Harm, hi list,
I did some simple tests and looked through the code in more detail:
---
The customization features are great! Also, I like the dashed line of
the pre-pend-hold use cases.
The dashed line would also be great in cases like those:
c'\3\startBend d'\3\stopBend~ d'\3
% bend up, no release, bent note is tied
c'\3\startBend d'\3\stopBend~ d'\3~ d'\3\startBend c'\3\stopBend
% bend up, bent note is tied, release
---
In my archives, I found a real-world-example that does not (yet) work:
< g'\3 b'\2 >4\startBend
< a'\3 c''\2 >\stopBend\startBend
< g'\3 b'\2 >2\stopBend
It is not that easy to play on guitar, but the lower string is raised by
two semitones, whereas the upper string is raised by one semitone.
I hope to find the source somewhere to provide you a scan of how it
should look like.
---
Another idea/thought/proposal: IIUC, the engraver does not take the
string numbers into account. I think this would be a good feature from a
user's point of view:
c'\startBend d'\stopBend\startBend c'\stopBend
could then probably be simplified to
c'\3\startBend d'\3 c'\3\stopBend
if the engraver internally takes care of each string seperately.
I don't know how hard an implementation would be, but tied notes on a
certain string can be detected automatically, so the dashed "keep this
note bent"-line replaces a tied note.
Perhaps the slow-down in the bend::remove-certain-tab-note-heads routine
can be avoided if bend events are handled specifically for certain strings:
< g\3~ b\2~ fis'\1\startBend > < g\3 \b\2 g'\1\stopBend >
---
I do hope my feedback does not sound too negative, this is a huge amount
of work you have done for us guitar players! Thanks a lot!
Cheers,
Marc
Am 11.09.2016 um 18:36 schrieb Marc Hohl:
Hi Harm,
I did not have much time to fully test it, but wow.
This is awesome! Kudos to you!
I'll give a more detailed report after some tests, but this may take a
while.
Cheers,
Marc
Am 11.09.2016 um 11:53 schrieb Thomas Morley:
Hi all,
as result of my private None-Google-Summer-of-Code, I'd like to
announce a BendSpanner-engraver.
It's based on our scheme-text-spanner.ly from the reg-test and the
fabulous work of Marc Hohl and his bend.ily
Thanks, to Stephen MacNeil who provided a couple of images from
printed editions.
A new grob, BendSpanner, is defined. Line-breaks, skylining, dashed
line for 'pre-bend-hold and a lot more work out of the box.
It's highly customizable. In the demo some possibilities are
demonstrated. More in the test-files.
Currently it works only for TabStaff, coding something for
default-Staff/Voice is on the TODO-list.
Though, currently it's pretty slow in compilation. The reason for this
slugginess
is the feature not to bend open strings and to ex- or include notes to
bend,
more precisley it's the definiton for
`bend::remove-certain-tab-note-heads'.
Not sure how to improve this, any hint is highly appreciated.
Ofcourse this is the first time the code is made public.
I expect several not yet noticed bugs or missing features.
Please report back.
Cheers,
Harm
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