Re: [Denemo-devel] Melisma Start / End directives

[Andreas Schneider]

Thanks for your hint. The following script does work and adds the
display text:

;;;ToggleMelisma
(let ((tag "ToggleMelisma"))
(ToggleDirective "chord" "postfix" (cons tag  "(mel") "\\melisma "
DENEMO_OVERRIDE_AFFIX))

I have borrowed the syntax with (cons ...) from one of Denemos scripts
(I don't remember which).

Andreas


Am 18.01.2017 um 19:34 schrieb Richard Shann:
> On Wed, 2017-01-18 at 19:10 +0100, Andreas Schneider wrote:
>> A question to the implementation: In your version of the melisma
>> script
>> for the Gregorian palette, you use (d-DirectivePut-chord-override tag
>> 16). I have looked up in denemo_types.h that 16 is
>> DENEMO_OVERRIDE_AFFIX. I tried to mimic that with ToggleDirective
>> (looking at your mail from 11th Jan.):
>>
>> ;;;ToggleMelisma
>> (let ((tag "ToggleMelisma"))
>> (ToggleDirective "chord" "postfix" (cons tag  "(mel") "\\melisma " #f
>> #f
>> DENEMO_OVERRIDE_AFFIX)
>>
>> However, that does not work. I do not understand the definition in
>> actions/denemo-modules/directives.scm. What do I do wrong?
> 
> you are providing the wrong number and types of arguments (perhaps by
> analogy with the ToggleStandaloneDirective procedure?, or whatever it is
> called).
> 
> The definition starts
> 
> (define (ToggleDirective type field tag content . overrides) ; four strings 
> and an arbitrary number of flags (numbers) for override field.
> 
> 
> so it requires four strings and then zero or more numbers.
> an example is given just before the procedure definition
>  (ToggleDirective "staff" "prefix" "Ambitus" "\\with { \\consists 
> \"Ambitus_engraver\" }")
> 
> so you need (ToggleDirective "chord" "postfix" tag "\\melisma " 
> DENEMO_OVERRIDE_AFFIX)
> 
> It doesn't seem to have any parameters for setting the graphic or
> display text. So you would need to do that after creating it, which
> means that you will have to test whether it is present(*) (so it becomes
> a little bit of a moot point whether this procedure is worth using).
> 
> Richard
> (*) you have to test because it may be toggling off, and in that case
> doing something like
> (d-DirectivePut-chord-display tag "(mel") would create a new (almost
> empty) directive :(
> 
> 
>  
> 
> 
> 
>