Is it possible to have one of the arguments rely on a property of another
argument?
In my example, I want the default value for "parenColor" to be the same as
the color of the "parenItem":
\version "2.24"
\language "english"
altParen = #(define-music-function
(parenColor parenSize parenItem)
( (color? "black") (number? -4) ly:music?)
#{
\tweak Parentheses.font-size #parenSize \tweak Parentheses.color
#parenColor \parenthesize #parenItem
#})
{ c \altParen -\tweak color "green" \upbow }
Thanks,
-Ahanu
On Tue, Jan 31, 2023 at 7:10 PM Ahanu Banerjee <[email protected]>
wrote:
> Thanks! I had no idea that that resource existed.
> Appreciate all your help.
>
> -Ahanu
>
> On Tue, Jan 31, 2023 at 7:08 PM Jean Abou Samra <[email protected]>
> wrote:
>
>> On 01/02/2023 01:04, Ahanu Banerjee wrote:
>> > Is it possible to specify default values for a function to use when
>> arguments are missing? In the example below, I want the default font size
>> to be -4 and the default color to be blue without having to specify it each
>> time, but I also want the ability to change those values in rare cases.
>> >
>> > \version "2.24"
>> > \language "english"
>> > altParen = #(define-music-function
>> > (parenColor parenSize parenItem)
>> > (color? number? ly:music?)
>> > #{
>> > \tweak Parentheses.font-size #parenSize \tweak Parentheses.color
>> #parenColor \parenthesize #parenItem
>> > #})
>> > { c \altParen "blue" #-4 \upbow }
>>
>>
>> Perhaps read this:
>>
>>
>> https://extending-lilypond.readthedocs.io/en/latest/extending/music.html#optional-arguments
>>
>> Best,
>> Jean
>>
>>
>>
