Re: graphics in scheme?

[Mats Bengtsson]

Tao Cumplido wrote:
> hi,
>
> in this snippet http://lsr.dsi.unimi.it/LSR/Snippet?id=335
> stencils are created with commands like make-circle-stencil.
> are these part of scheme or of lilypond and is there a list of all possible 
> commands available?
>   
They are implemented in LilyPond and are primarily intended for internal
use in LilyPond. I'm afraid that you have to browse through the files in
.../share/lilypond/current/scm/ of your LilyPond installation to find all
available Scheme functions. Note that only functions declared with
(define-public) are accessible from within normal .ly files.
A partial list is available in the Program Reference -> Scheme functions.
Especially read the documentation for ly:make-stencil, which partly answers
your next question.
> also is this similar to the postscript command inside a markup-block and if not 
> is it actually possible to use postscript (with variables) inside scheme?
>   
There are several different backends to LilyPond, whereof the Postscript 
output is just
one example.

  /Mats