Re: Tuplet number direction

[Richard Shann]

On Wed, 2016-04-13 at 11:00 +0100, Phil Holmes wrote:
> ----- Original Message ----- 
> From: "Richard Shann" <address@hidden>
> To: <address@hidden>
> Sent: Wednesday, April 13, 2016 10:37 AM
> Subject: Tuplet number direction
> 
> 
> >I wonder if someone could illuminate the tuplet direction property - I
> > wanted to put the tuplet number above rather than below and looked up:
> >
> > http://lilypond.org/doc/v2.18/Documentation/internals/tupletnumber
> >
> > direction (direction):
> >
> >    tuplet-number::calc-direction
> >
> >    If side-axis is 0 (or X), then this property determines whether the
> > object is placed LEFT, CENTER or RIGHT with respect to the other object.
> > Otherwise, it determines whether the object is placed UP, CENTER or
> > DOWN. Numerical values may also be used: UP=1, DOWN=-1, LEFT=-1,
> > RIGHT=1, CENTER=0.
> >
> > from this I tried
> >
> > \override TupletBracket #'tuplet-number::calc-direction = #UP  (WRONG)
> >
> > which (having stared at LilyPond syntax over the years) looked fishy and
> > indeed did not work. So I resorted to stabbing in the dark:
> >
> >
> >  \override TupletBracket #'direction = #UP
> >
> > which does work. I wonder if some words of wisdom could help me and
> > others to go more directly to the answer in this (and other?) case(s).
> >
> > Richard
> 
> 
> I'm not an expert in the internals, but it looks to me that the IR lists the 
> properties with below the property, a default.  Thus the default font-shape 
> is 'italic, and the default direction is given by 
> tuplet-number::calc-direction.  Direction has an argument of (direction) and 
> it therefore expects a direction as the argument.  In this case, #UP is a 
> possible argument.

Ah, yes! that fits with the
 font-shape (symbol):

    'italic 

entry, since tuplet numbers are usually in italics.
I think it would help to have the format of this information
(property-name default value ...) somewhere easily visible (e.g. an
"explain" link on the top of each box or headings or ...)

Thank you very much I feel that information may stick.

Richard