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3.1.113 Stem
Stem objects are created by: Span_stem_engraver and Stem_engraver.
Standard settings:
beamlet-default-length(pair): '(1.1 . 1.1)A pair of numbers. The first number specifies the default length of a beamlet that sticks out of the left hand side of this stem; the second number specifies the default length of the beamlet to the right. The actual length of a beamlet is determined by taking either the default length or the length specified by
beamlet-max-length-proportion, whichever is smaller.beamlet-max-length-proportion(pair): '(0.75 . 0.75)The maximum length of a beamlet, as a proportion of the distance between two adjacent stems.
default-direction(direction):
ly:stem::calc-default-directionDirection determined by note head positions.
details(list): '((lengths 3.5 3.5 3.5 4.25 5.0 6.0 7.0 8.0 9.0) (beamed-lengths 3.26 3.5 3.6) (beamed-minimum-free-lengths 1.83 1.5 1.25) (beamed-extreme-minimum-free-lengths 2.0 1.25) (stem-shorten 1.0 0.5 0.25))Alist of parameters for detailed grob behavior. More information on the allowed parameters for a grob can be found by looking at the top of the Internals Reference page for each interface having a
detailsproperty.direction(direction):
ly:stem::calc-directionIf
side-axisis0(orX), then this property determines whether the object is placedLEFT,CENTERorRIGHTwith respect to the other object. Otherwise, it determines whether the object is placedUP,CENTERorDOWN. Numerical values may also be used:UP=1,DOWN=-1,LEFT=-1,RIGHT=1,CENTER=0.double-stem-separation(number):
0.5The distance between the two stems of a half note in tablature when using
\tabFullNotation, not counting the width of the stems themselves, expressed as a multiple of the default height of a staff-space in the traditional five-line staff.duration-log(integer):
stem::calc-duration-logThe 2-log of the note head duration, i.e.,
0= whole note,1= half note, etc.length(dimension, in staff space):
#<unpure-pure-container #<primitive-procedure ly:stem::calc-length> #<primitive-procedure ly:stem::pure-calc-length> >User override for the stem length of unbeamed stems (each unit represents half a
staff-space).neutral-direction(direction):
-1Which direction to take in the center of the staff.
note-collision-threshold(dimension, in staff space):
1Simultaneous notes that are this close or closer in units of
staff-spacewill be identified as vertically colliding. Used byStemgrobs for notes in the same voice, andNoteCollisiongrobs for notes in different voices. Default value 1.stem-begin-position(number):
#<unpure-pure-container #<primitive-procedure ly:stem::calc-stem-begin-position> #<primitive-procedure ly:stem::pure-calc-stem-begin-position> >User override for the begin position of a stem.
stencil(stencil):
ly:stem::printThe symbol to print.
thickness(number):
1.3For grobs made up of lines, this is the thickness of the line. For slurs and ties, this is the distance between the two arcs of the curve’s outline at its thickest point, not counting the diameter of the virtual “pen” that draws the arcs. This property is expressed as a multiple of the current staff-line thickness (i.e. the visual output is influenced by changes to
Staff.StaffSymbol.thickness).X-extent(pair of numbers):
ly:stem::widthExtent (size) in the X direction, measured in staff-space units, relative to object’s reference point.
X-offset(number):
ly:stem::offset-callbackThe horizontal amount that this object is moved relative to its X-parent.
Y-extent(pair of numbers):
#<unpure-pure-container #<primitive-procedure ly:stem::height> #<primitive-procedure ly:stem::pure-height> >Extent (size) in the Y direction, measured in staff-space units, relative to object’s reference point.
Y-offset(number):
#<unpure-pure-container #<primitive-procedure ly:staff-symbol-referencer::callback> >The vertical amount that this object is moved relative to its Y-parent.
This object supports the following interface(s): grob-interface, item-interface and stem-interface.
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