[JW Lua] CheckElapsedTime function / Reading the MIDI tempo graph

[Jan Angermüller]

Jari,

after experimenting a little bit, I found out that it's probably
the FCTempoElements:LoadAll() that may be buggy.

While the following code gives tempoelements.Count==0

     local tempoelements=finale.FCTempoElements()
     tempoelements:LoadAll() --loading all measures
     print(tempoelements.Count)

this code works fine:

     local tempoelements=finale.FCTempoElements()
     tempoelements:LoadAllForItem(1)  --loading measure 1 only
     print(tempoelements.Count)

So if do a loop on all measures I get the same results
with LoadAllForItem as I would expect with LoadAll.
Problem solved: reading the MIDI tempo graph is possible,
but currently only with LoadAllForItem.

Best regards,
Jan


Am 20.11.2014 14:40, schrieb Jan Angermüller:
> Jari,
>
> how can I read the output of the MIDI tempo graph
> (i.e. what Finale shows me when I select "MIDI Tool / Edit Tempo"
> in the attached screen shot) ?
>
> Is this the FCTempoElement class ? But that one tells me in the 
> example above:
> FCTempoElements.Count = 0
> Then I thought it may be the FCMidiExpression class, but that
> one doesn't hold tempo elements either.
>
> Or is this feature not implemented yet ?
>
> Reading this tempo graph will probably be the only way to
> get a good elapsed time approximation.
> I think it's not possible (or extremely difficult) to get good results by
> evaluating at the same time:
> - text expressions
> - shape expressions
> - MIDI expressions
> - HP tempo variations
> - Elements from the tempo tool
>
> BTW, as there is this an "Apply Human Playback" plugin which may be
> required here before calling my lua script:
> is this function ("apply human playback") also available through the PDK ?
> So that I don't have to call it manually before calling the Lua script.
>
> Jan
>
>
> Am 12.11.2014 09:07, schrieb Jari Williamsson:
>> Jan,
>>
>> The PDK doesn't provide any such feature. You have to load the 
>> initial tempo in FCPlaybackPrefs, and then browse the expressions and 
>> FCTempoElement(s) separately.
>>
>>
>> Best regards,
>>
>> Jari Williamsson
>>
>>
>> On 2014-11-08 17:18, Jan Angermüller wrote:
>>> Jari,
>>>
>>> does the FInale PDK offer a CheckElapsedTime function
>>> to calculate the playback duration of a certain measure or
>>> the duration of the piece until measure x ?
>>>
>>> Best regards,
>>> Jan
>>>
>>> _______________________________________________
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>>> JWLua at jwmusic.nu
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>>>
>>>
>>
>>
>>
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>
>
> -- 
> Jan Angermüller
> Jevenstedter Str. 80
> 22547 Hamburg
> Tel. 040 - 28 94 84 82
> www.angermueller.com
>
>
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