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Re: problems with \cueDuring and events
From: |
Thomas Morley |
Subject: |
Re: problems with \cueDuring and events |
Date: |
Mon, 15 Apr 2019 22:11:15 +0200 |
Am Mo., 15. Apr. 2019 um 02:26 Uhr schrieb Dan Eble <address@hidden>:
>
> On Apr 14, 2019, at 08:10, Thomas Morley <address@hidden> wrote:
> >
> > As far as I understand, it's the partcombiner at work here.
> > At least:
> >
> > \version "2.21.0"
> >
> > %% use \partcombine with lowercase "c" for lower versions
> > \partCombine
> > \relative { fis'8 fis4. \repeat tremolo 4 { b16 c } r1 }
> > \relative { c'8 s2.. cis1 }
> >
> > returns similiar warnings and output.
>
> I wasn’t paying much attention until “partcombiner.” Now I’m reading through
> this thread in the archive, but I’m having trouble making the connection.
> Was the part combiner involved at all before this mention?
>
> Similar warnings could simply indicate a shared cause.
>
> Regards,
> —
> Dan
>
Yep, after further research I think it has nothing to do with the
partcombiner itself. Rather the problem with \repeat tremolo is
present here in the quoting-topic _and_ in the partcombiner.
Related issues for the partcombiner:
https://sourceforge.net/p/testlilyissues/issues/5281/
https://sourceforge.net/p/testlilayissues/issues/3374/
For the quoting-stuff I probably found the cause of the trouble,
although I've no clue how to fix.
%% Let's look at an example:
quoteMe =
{ r2 <>\< \repeat tremolo 8 { c''32 d'' } e''1\! }
\addQuote quoteMe \quoteMe
%% And some diagnostic code:
#(define display-some-event-props
(lambda (ctx event)
(let ((mus-cause (ly:prob-property event 'music-cause)))
(format #t "\nFound ~a at ~a with span-direction ~a"
(ly:prob-property mus-cause 'name)
(ly:context-current-moment ctx)
(ly:prob-property mus-cause 'span-direction)))))
eng =
#(lambda (ctx)
(make-engraver
(listeners
((crescendo-event engraver event)
(display-some-event-props ctx event))
((tremolo-span-event engraver event)
(display-some-event-props ctx event)))
(acknowledgers
((beam-interface engraver grob source-engraver)
(format #t "\n\nBeam created by ~a starts at ~a"
source-engraver
(ly:context-current-moment ctx))))
(end-acknowledgers
((beam-interface engraver grob source-engraver)
(format #t "\nBeam created by ~a ends at ~a\n"
source-engraver
(ly:context-current-moment ctx))))))
%% Calling the example code
\new Voice \with { \consists \eng } \quoteMe
%% returns in terminal:
%% Found CrescendoEvent at #<Mom 1/2> with span-direction -1
%% Found TremoloSpanEvent at #<Mom 1/2> with span-direction -1
%%
%% Beam created by #<Translator Chord_tremolo_engraver > starts at #<Mom 1/2>
%% Beam created by #<Translator Chord_tremolo_engraver > ends at #<Mom 3/4>
%%
%% Found TremoloSpanEvent at #<Mom 1> with span-direction 1
%% Found CrescendoEvent at #<Mom 1> with span-direction 1
%% Note the ending TremoloSpanEvent at #<Mom 1> (like the crescendo)
%% But the beam ends at #<Mom 3/4>
%% If you now try, i.e. the tremolo-end is _not_ quoted,
\new Voice \with { \consists \eng } { c''2 \quoteDuring "quoteMe" { s2 } d''1 }
%% then you see in terminal among others:
%%
%% Found CrescendoEvent at #<Mom 1/2> with span-direction -1
%% Found TremoloSpanEvent at #<Mom 1/2> with span-direction -1
%%
%% Beam created by #<Translator Chord_tremolo_engraver > starts at #<Mom 1/2>
%% Beam created by #<Translator Chord_tremolo_engraver > ends at #<Mom 3/4>
%%
%% Beam created by #<Translator Chord_tremolo_engraver > ends at #<Mom 1>
%% Neither tremolo nor crescendo is ended, the Beam is ended twice ... a mess
%% For the Hairpin a warning is done, nothing more,
%% The Chord_tremolo_engraver warns as well but is not that smart later,
%% Several programming errors are thrown.
%% But if you ensure the tremolo-end is quoted as well, all's fine:
\new Voice \with { \consists \eng } { c''2 \quoteDuring "quoteMe" { s1 } d''2 }
So the culprit seems to be the tremolo is per design ended at the
following timestep, which may or may not be in the quote.
So far my findings, best
Harm
- problems with \cueDuring and events, Werner LEMBERG, 2019/04/05
- Re: problems with \cueDuring and events, Thomas Morley, 2019/04/06
- Re: problems with \cueDuring and events, Werner LEMBERG, 2019/04/07
- Re: problems with \cueDuring and events, Thomas Morley, 2019/04/08
- Re: problems with \cueDuring and events, Werner LEMBERG, 2019/04/14
- Re: problems with \cueDuring and events, Thomas Morley, 2019/04/14
- Re: problems with \cueDuring and events, Thomas Morley, 2019/04/14
- Message not available
- Re: problems with \cueDuring and events, Thomas Morley, 2019/04/14
- Re: problems with \cueDuring and events, Dan Eble, 2019/04/14
- Re: problems with \cueDuring and events,
Thomas Morley <=
- Re: problems with \cueDuring and events, David Kastrup, 2019/04/15