Hallo again
In the meantime it has occurred to me that moving the gratuitous magstep
scaling from baseline-skip over to thickness is perhaps not the answer.
Since the triangle is applied mainly as a glyph it should not respond to
overrides on those two properties. Consider squashing a vertical column
by reducing its baseline-skip; a triangle somewhere in the column would
be resized, unlike any of its font neighbors.
So what about a markup that ignores all properties except the font size?
It could offer some flexibilty via parameters, eg:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#(define-markup-command (delta-bhr layout props b-cents h-cents r-cents)
(number? number? number?)
#:properties ((font-size 0))
(let* (
(cent (/ (magstep font-size) 100))
(base (* b-cents cent))
(height (* h-cents cent))
(radius (* r-cents cent)) ; of dot
(thickness (* 2 radius))) ; of line
(ly:make-stencil `(polygon
; '(0.0 ,radius ,base ,radius ,(* 0.5 base) ,(+ height radius)) ;old
(0.0 ,radius ,base ,radius ,(* 0.5 base) ,(+ height radius)) ;new
,thickness #f)
(interval-widen (cons 0 base) radius)
(cons 0 base) )))
delta = \markup \delta-bhr #120 #130 #10 % customised for "sans-serif"
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Just my two cents. Or three in this case.
Cheers,
Robin
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