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3.4 Internal backend properties
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X-common(layout object) Common reference point for axis group.
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Y-common(layout object) See
X-common.-
accidental-grob(layout object) The accidental for this note.
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accidental-grobs(list) An alist with
(notename . groblist)entries.-
add-cauda(boolean) Does this flexa require an additional cauda on the left side?
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add-join(boolean) Is this ligature head-joined with the next one by a vertical line?
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add-stem(boolean) Is this ligature head a virga and therefore needs an additional stem on the right side?
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adjacent-hairpins(unknown) A list of directly neighboring hairpins.
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adjacent-pure-heights(vector) Used by a
VerticalAxisGroupto cache theY-extents of different column ranges.-
all-elements(unknown) A list of all grobs in this line. Its function is to protect objects from being garbage collected.
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arpeggio(layout object) A pointer to an
Arpeggioobject.-
ascendens(boolean) Is this neume of ascending type?
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auctum(boolean) Is this neume liquescentically augmented?
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axis-group-parent-X(layout object) Containing X axis group.
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axis-group-parent-Y(layout object) Containing Y axis group.
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bar-extent(pair of numbers) The Y-extent of the actual bar line. This may differ from
Y-extentbecause it does not include the dots in a repeat bar line.-
bars(unknown) A list of bar line pointers.
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beam(layout object) A pointer to the beam, if applicable.
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begin-of-line-visible(boolean) Used for marking
ChordNamesthat should only show changes.-
bounded-by-me(unknown) A list of spanners that have this column as start/begin point. Only columns that have grobs or act as bounds are spaced.
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bracket(layout object) The bracket for a number.
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cause(any type) Any kind of causation objects (i.e., music, or perhaps translator) that was the cause for this grob.
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cavum(boolean) Is this neume outlined?
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columns(unknown) A list of grobs, typically containing
PaperColumnorNoteColumnobjects.-
conditional-elements(unknown) Internal use only.
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context-info(integer) Within a ligature, the final glyph or shape of a head may be affected by the left and/or right neighbour head.
context-infoholds for each head such information about the left and right neighbour, encoded as a bit mask.-
cross-staff(boolean) For a beam or a stem, this is true if we depend on inter-staff spacing.
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delta-position(number) The vertical position difference.
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deminutum(boolean) Is this neume deminished?
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descendens(boolean) Is this neume of descendent type?
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details(list) Alist of parameters for detailed grob behavior.
More information on the allowed parameters can be found by inspecting ‘lily/slur-scoring.cc’, ‘lily/beam-quanting.cc’, and ‘lily/tie-formatting-problem.cc’. Setting
debug-tie-scoring,debug-beam-scoringordebug-slur-scoringalso provides useful clues.-
direction-source(layout object) In case
side-relative-directionis set, which grob to get the direction from.-
dot(layout object) A reference to a
Dotsobject.-
dots(unknown) Multiple
Dotsobjects.-
elements(unknown) A list of grobs; the type is depending on the grob where this is set in.
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encompass-objects(unknown) Objects that a slur should avoid in addition to notes and stems.
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figures(unknown) Figured bass objects for continuation line.
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flexa-height(dimension, in staff space) The height of a flexa shape in a ligature grob (in
staff-spaceunits).-
flexa-width(dimension, in staff space) The width of a flexa shape in a ligature grob in (in
staff-spaceunits).-
font(font metric) A cached font metric object.
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forced(boolean) Manually forced accidental.
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glyph-name(string) The glyph name within the font.
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grace-spacing(layout object) A run of grace notes.
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head-width(dimension, in staff space) The width of this ligature head.
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heads(unknown) A list of note heads.
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ideal-distances(list) (obj . (dist . strength))pairs.-
important-column-ranks(vector) A cache of columns that contain
items-worth-livingdata.-
inclinatum(boolean) Is this neume an inclinatum?
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interfaces(list) A list of symbols indicating the interfaces supported by this object. It is initialized from the
metafield.-
items-worth-living(unknown) A list of interesting items. If empty in a particular staff, then that staff is erased.
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join-heads(boolean) Whether to join the note heads of an ambitus grob with a vertical line.
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join-right-amount(number) DOCME
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least-squares-dy(number) The ideal beam slope, without damping.
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left-items(unknown) DOCME
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left-neighbors(unknown) A list of
spacing-wishesgrobs that are close to the current column.The closest
spacing-wishesdetermine the actual distances between the columns.-
linea(boolean) Attach vertical lines to this neume?
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meta(list) Provide meta information. It is an alist with the entries
nameandinterfaces.-
minimum-distances(list) A list of rods that have the format
(obj . dist).-
normal-stems(unknown) An array of visible stems.
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note-columns(pair) A list of
NoteColumngrobs.-
note-head(layout object) A single note head.
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note-heads(unknown) A list of note head grobs.
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oriscus(boolean) Is this neume an oriscus?
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pedal-text(layout object) A pointer to the text of a mixed-style piano pedal.
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pes-or-flexa(boolean) Shall this neume be joined with the previous head?
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positioning-done(boolean) Used to signal that a positioning element did its job. This ensures that a positioning is only done once.
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prefix-set(number) A bit mask that holds all Gregorian head prefixes, such as
\virgaor\quilisma.-
primitive(integer) A pointer to a ligature primitive, i.e., an item similar to a note head that is part of a ligature.
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pure-Y-common(layout object) A cache of the
common_refpoint_of_arrayof theelementsgrob set.-
pure-Y-extent(pair of numbers) The estimated height of a system.
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pure-Y-offset-in-progress(boolean) A debugging aid for catching cyclic dependencies.
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pure-relevant-items(unknown) A subset of elements that are relevant for finding the
pure-Y-extent.-
pure-relevant-spanners(unknown) A subset of elements that are relevant for finding the
pure-Y-extent.-
quant-score(string) The beam quanting score; stored for debugging.
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quantize-position(boolean) If set, a vertical alignment is aligned to be within staff spaces.
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quantized-positions(pair of numbers) The beam positions after quanting.
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quilisma(boolean) Is this neume a quilisma?
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rest(layout object) A pointer to a
Restobject.-
rest-collision(layout object) A rest collision that a rest is in.
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rests(unknown) A list of rest objects.
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right-items(unknown) DOCME
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right-neighbors(unknown) See
left-neighbors.-
script-stencil(pair) A pair
(type . arg)which acts as an index for looking up aStencilobject.-
separation-item(layout object) A separation item.
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shorten(dimension, in staff space) The amount of space that a stem is shortened. Internally used to distribute beam shortening over stems.
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side-support-elements(unknown) The side support, a list of grobs.
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skyline-distance(number) The distance between this staff and the next one, as determined by a skyline algorithm.
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slur(layout object) A pointer to a
Slurobject.-
spaceable-staves(unknown) Objects to be spaced during page layout.
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spacing(layout object) The spacing spanner governing this section.
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spacing-wishes(unknown) List of note spacing or staff spacing objects.
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staff-symbol(layout object) The staff symbol grob that we are in.
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stem(layout object) A pointer to a
Stemobject.-
stem-info(pair) A cache of stem parameters.
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stems(unknown) A list of stem objects, corresponding to the notes that the arpeggio has to be before.
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stropha(boolean) Is this neume a stropha?
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tie(layout object) A pointer to a
Tieobject.-
tremolo-flag(layout object) The tremolo object on a stem.
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tuplet-number(layout object) The number for a bracket.
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tuplets(unknown) A list of smaller tuplet brackets.
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use-breve-rest(boolean) Use breve rests for measures longer than a whole rest.
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virga(boolean) Is this neume a virga?
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x-offset(dimension, in staff space) Extra horizontal offset for ligature heads.
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