Re: How to use make-music?
David,
Thanks for this. I'm obviously going to have to dust off my LISP lectures from
1967!
Best regards,
Peter
mailto:lilyp...@ptoye.com
www.ptoye.com
-
Friday, December 20, 2019, 12:41:31 PM, David Kastrup wrote:
> Peter Toye writes:
>> Thee are many examples of the use of the make-music function in NR and
>> Snippets, but I cannot find any reference to its definition in LR, NR
>> or IR. I can use the examples to do what I want, but I'd like to know
>> a bit more about how it works. Is there a definition of it and its
>> parameters anywhere (apart from delving into the code)?
> Sometimes delving in the code just to discover
> comment strings/comments
> is not the worst idea with LilyPond.
> scm/define-music-types.scm:
> (define-safe-public (make-music name . music-properties)
> "Create a music object of given name, and set its properties
> according to @code{music-properties}, a list of
> alternating property symbols
> and values. E.g:
> @example
> (make-music 'OverrideProperty
> 'symbol 'Stem
> 'grob-property 'thickness
> 'grob-value (* 2 1.5))
> @end example
> Instead of a successive symbol and value, an entry in the list may
> also be an alist or a music object in which case its elements,
> respectively its @emph{mutable} property list
> (properties not inherent
> to the type of the music object) will get taken.
> The argument list will be interpreted
> left-to-right, so later entries
> override earlier ones."
Re: How to use make-music?
Peter Toye writes:
> Thee are many examples of the use of the make-music function in NR and
> Snippets, but I cannot find any reference to its definition in LR, NR
> or IR. I can use the examples to do what I want, but I'd like to know
> a bit more about how it works. Is there a definition of it and its
> parameters anywhere (apart from delving into the code)?
Sometimes delving in the code just to discover comment strings/comments
is not the worst idea with LilyPond.
scm/define-music-types.scm:
(define-safe-public (make-music name . music-properties)
"Create a music object of given name, and set its properties
according to @code{music-properties}, a list of alternating property symbols
and values. E.g:
@example
(make-music 'OverrideProperty
'symbol 'Stem
'grob-property 'thickness
'grob-value (* 2 1.5))
@end example
Instead of a successive symbol and value, an entry in the list may
also be an alist or a music object in which case its elements,
respectively its @emph{mutable} property list (properties not inherent
to the type of the music object) will get taken.
The argument list will be interpreted left-to-right, so later entries
override earlier ones."
--
David Kastrup
How to use make-music?
Thee are many examples of the use of the make-music function in NR and Snippets, but I cannot find any reference to its definition in LR, NR or IR. I can use the examples to do what I want, but I'd like to know a bit more about how it works. Is there a definition of it and its parameters anywhere (apart from delving into the code)? Regards, Peter mailto:lilyp...@ptoye.com www.ptoye.com
