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Beam objects are created by: Auto_beam_engraver, Beam_engraver, Chord_tremolo_engraver and Grace_beam_engraver.
Standard settings:
gap
(dimension, in staff space):0.8
Size of a gap in a variable symbol.
positions
(pair of numbers):#<simple-closure #<simple-closure (#<procedure chain-grob-member-functions (grob value . funcs)> (#<primitive-procedure cons> 0 0) #<primitive-procedure ly:beam::calc-least-squares-positions> #<primitive-procedure ly:beam::slope-damping> #<primitive-procedure ly:beam::shift-region-to-valid> #<primitive-procedure ly:beam::quanting>) > >
Pair of staff coordinates
(
left.
right)
, where both left and right are instaff-space
units of the current staff. For slurs, this value selects which slur candidate to use; if extreme positions are requested, the closest one is taken.concaveness
(number):ly:beam::calc-concaveness
A beam is concave if its inner stems are closer to the beam than the two outside stems. This number is a measure of the closeness of the inner stems. It is used for damping the slope of the beam.
direction
(direction):ly:beam::calc-direction
If
side-axis
is0
(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
.beaming
(pair):ly:beam::calc-beaming
Pair of number lists. Each number list specifies which beams to make.
0
is the central beam,1
is the next beam toward the note, etc. This information is used to determine how to connect the beaming patterns from stem to stem inside a beam.stencil
(unknown):ly:beam::print
The symbol to print.
clip-edges
(boolean):#t
Allow outward pointing beamlets at the edges of beams?
thickness
(number):0.48
Line thickness, generally measured in
line-thickness
.neutral-direction
(direction):-1
Which direction to take in the center of the staff.
beamed-stem-shorten
(list):'(1.0 0.5 0.25)
How much to shorten beamed stems, when their direction is forced. It is a list, since the value is different depending on the number of flags and beams.
damping
(number):1
Amount of beam slope damping.
auto-knee-gap
(dimension, in staff space):5.5
If a gap is found between note heads where a horizontal beam fits that is larger than this number, make a kneed beam.
font-family
(symbol):'roman
The font family is the broadest category for selecting text fonts. Options include:
sans
,roman
.
This object supports the following interface(s): unbreakable-spanner-interface, staff-symbol-referencer-interface, spanner-interface, beam-interface and grob-interface.
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