Re: [Denemo-devel] Anacrusis script needed

[Richard Shann]

I have checked in a general Anacrusis (upbeat, auftakt) script. The only
things it doesn't do is tell Denemo that the first measure is actually
complete and adjust Denemo's numbering. The first would require multiple
denemo objects (in general), which would be unpleasant. I have in mind a
longer term solution to this (also solves whole measure rests in 9/8
etc) which involves defining a new duration value -1 with meaning
"derive duration from basic_durinticks which would allow us to represent
arbitrary durations. The bar numbering problem also affects 1st/2nd time
bars (BTW is "bars" acceptable in American English here?), it would
bring in all the same issues as chaning timesigs and  clefs, that is,
there would be a requirement to cache the value, and as usual we hit the
problem of having no measure object to store values in (hence fields to
store the leftmost value, and updates during the draw routine and so
on...).

NOTE! I have created d-GetDurationInTicks to support this: I couldn't
find previous discussion around this topic, so I hope it is all in line
with what we thought then... The ticks in question are 384 to the
quarter note, which is IIRC the ppqn of the MIDI, but I am not sure they
are all linked properly. *AND* I notice lilypond is supporting 1/256th
notes and smaller, which we can't do with this value.
Also: d-NextObjectInMeasure exists now.

Richard



On Sun, 2009-09-06 at 10:13 -0500, Jeremiah Benham wrote:
> I could tale this on but not right away.
> 
> Jeremiah
> 
> On Sep 6, 2009, at 8:52 AM, Richard Shann <address@hidden>  
> wrote:
> 
> > We need an anacrusis script that is more than the current (which is
> > really just a sample of how it is done - it does a 1/8th note upbeat).
> >
> > It could work as follows. You put in an incomplete first measure and
> > then hit Anacrusis.
> > The script iterates over the first measure adding the durations then  
> > it
> > creates the needed lilypond as in the current script
> > i.e. something like
> >
> > \partial 8*2
> >
> > for two 1/8th  notes (i.e. 1/4 note) - I am not clear about the exact
> > syntax.
> > then it can proceed as in the current anacrusis script placing the
> > directive at the start and when finished it should create a new  
> > measure
> > after the current one and move the cursor there.
> >
> > Future development would add something to the directive to tell Denemo
> > that the measure is complete, and also not to count it as measure 1 -
> > this is part of a topic that is bubbling away in my head.
> >
> > I would like this script. But I would be very happy if someone else
> > actually wrote it...
> >
> > I'll put this in the TODO list.
> >
> > Richard
> >
> >
> >
> >
> > _______________________________________________
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