Re: Auto-panner

[Jan-Peter Voigt]

Hi Vaughan,

if global is a music-function calling autopan, it will evaluate it
everytime. If global is a variable, its value is set, once it is assigned.
So if you have to wrap it in music-function. If you always have a
variable "global" containing all you need, you can wrap that in a function:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
music = { c'' }

global = { \time 4/4 }
% another name than "global"!
meta =
#(define-music-function (parser location)()
   #{
     \autopan \global
   #})

\new Staff <<
        \meta
        \music
        >>
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

"global" is only a function, if it is declared one. Otherwise it is just
a variable.

BTW, nice autopan utility ;)

HTH, Jan-Peter

Am 27.01.2014 13:54, schrieb Vaughan McAlley:
> Because I’m lazy, I’d love to include the \autopan command in \global,
> but it looks like when \global is evaluated, the function is evaluated
> and its return value is permanently made part of \global, which means
> everything is panned to the far left. Is there a way to make the
> function run every time \global appears?