(let*
((posns (ly:grob-property beam 'positions))
(thick (ly:grob-property beam 'thickness))
- (paper (ly:grob-paper beam))
- (lthick (ly:output-def-lookup paper 'linethickness))
+ (layout (ly:grob-layout beam))
+ (lthick (ly:output-def-lookup layout 'linethickness))
(staff-thick lthick) ; fixme.
(quant->coord (lambda (p q)
(if (= 2 (abs q))
(not (almost-equal want-r (cdr posns))))
(begin
(ly:warn
- (format "Error in beam quanting found. Want (~S,~S) found (~S)."
- want-l want-r posns
- ))
+ "Error in beam quanting found. Want (~S,~S) found (~S)."
+ want-l want-r posns )
(set! (ly:grob-property beam 'quant-score)
(format "(~S,~S)" want-l want-r)))
(set! (ly:grob-property beam 'quant-score) "")
)))
+(define ((check-beam-slope-sign comparison) beam)
+ "Check whether the slope of BEAM is correct wrt. COMPARISON."
+ (let*
+ ((posns (ly:grob-property beam 'positions))
+ (slope-sign (- (cdr posns) (car posns)))
+ (correct (comparison slope-sign 0)))
+
+
+ (if (not correct)
+ (begin
+ (ly:warn "Error in beam quanting found. Want ~S 0 found ~S."
+ (procedure-name comparison) slope-sign)
+ (set! (ly:grob-property beam 'quant-score)
+ (format "~S 0" (procedure-name comparison) )))
+ (set! (ly:grob-property beam 'quant-score) "")
+
+
+ )))
(define-public (check-quant-callbacks l r)
(list Beam::least_squares
(check-beam-quant l r)
))
+
+(define-public (check-slope-callbacks comparison)
+ (list Beam::least_squares
+ Beam::check_concave
+ Beam::slope_damping
+ Beam::shift_region_to_valid
+ Beam::quanting
+ (check-beam-slope-sign comparison)
+ ))
+