Just a question about \with-dimensions in markup. I have a simple function
which is to draw a line between two specified points, not just to an end
point as per the \draw-line type functions. Unless you specify
\with-dimensions at the point of calling the markup command, it starts at
the (0 . 0) point. While I can understand this, the question is, can the
\with-dimensions function (I use the term function loosely here) be
incorporated into the scheme markup command? Or is this a case for writing
the markup in lilypond syntax in the scheme function and using the
\with-dimensions that way? I was unable to find a scheme with-dimensions
function - I imagine that is because the dimension calculations happens at
a different stage of the layout computation?
I want this function rather than an alternate solution as it is a cut down
MWE of a more elaborate function that incorporates some other graphic
commands as well.
So then as a second question, is it better to write define-markup-command
functions in all Scheme, or to use lilypond syntax therein? I seem to
recall some brief mention of this point in the list some time ago, but I
never got the impression of a definitive answer or firm recommendation.
Andrew
== snip
\version "2.19.55"
#(define-markup-command (line-from-to layout props from to)
(number-pair? number-pair?)
#:properties ((thickness 0.15))
(let* ((startx (car from))
(starty (cdr from))
(endx (car to))
(endy (cdr to)))
(make-line-stencil thickness startx starty endx endy)))
{
c'4
^\markup \draw-line #'(4 . 4)
c'4
^\markup \line-from-to #'(0.5 . -3) #'(3 . 3)
c'4
^\markup \with-dimensions #'(0 . 0) #'(0 . 0) \line-from-to #'(0.5 . -3)
#'(3 . 3)
}
== snip
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