Re: NR 6.5.2., 6.7

[Mats Bengtsson]

Carl D. Sorensen wrote:
> I read NR 6.5.2 and couldn't understand the example.  It describes the usage
> of applyOutput, and presents a function for its use, but never shows how it
> is applied.  An actual example here would be wonderful.
>   
The code included in this section now is plain wrong. The following 
version which
includes an example of how to use it, seems to work. Another example is 
available
in input/lsr/changing-properties-for-individual-grobs.ly.

#(define (blanker grob grob-origin context)
(if (and (memq 'note-head-interface (ly:grob-interfaces grob))
         (eq? (ly:grob-property grob 'staff-position) 0))
    (ly:grob-set-property! grob 'transparent #t)))

\relative c'{
 < c e g b d f a>
 \applyOutput #'Voice #blanker
 < c e g b d f a>
 < c e g b d f a>
}

   /Mats
> N.R 6.7 shows the use of Scheme code as an articulation.  The reason why
> this works is unclear to me, but I can see there is some power here.  An
> explanation would be really helpful.  The articulation that is added is not
> a Scheme function, but rather the return part of a Scheme function.
>
> Thanks,
>
> Carl
>
>
>
>
> _______________________________________________
> lilypond-devel mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/lilypond-devel
>   

--
=============================================
        Mats Bengtsson
        Signal Processing
        School of Electrical Engineering
        Royal Institute of Technology (KTH)
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================