classes.json

classes.json groups glyphs together into classes, so that software developers can handle similar glyphs (e.g. noteheads, clefs, flags, etc.) in a similar fashion. Here is an excerpt of this file:

{
...
  "clefs": [
    "gClef",
    "gClef15mb",
    "gClef8vb",
    "gClef8va",
    "gClef15ma",
    "gClef8vbOld",
    "gClef8vbCclef",
    ...
  ],
  "noteheads": [
    "noteheadDoubleWhole",
    "noteheadWhole",
    "noteheadHalf",
    "noteheadBlack",
    "noteheadNull",
    ...
  ],
  "flags": [
    "flag8thUp",
    "flag8thDown",
    "flag16thUp",
    "flag16thDown",
    "flag32ndUp",
    "flag32ndDown",
    ...
  ],
...
}

Glyphs are listed within their classes using the names specified in glyphnames.json. Not all glyphs are contained within classes, and the same glyph can appear in multiple classes.

The classes defined at present are as follows:

Class name Description
accidentals Contains all glyphs in all accidentals ranges.
accidentals24EDOArrows, accidentals53EDOTurkish, accidentals72EDOWyschnegradsky, accidentalsAEU, accidentalsArabic, accidentalsHelmholtzEllis, accidentalsJohnston, accidentalsPersian, accidentalsSagittalAthenian, accidentalsSagittalDiacritics, accidentalsSagittalMixed, accidentalsSagittalPromethean, accidentalsSagittalPure, accidentalsSagittalTrojan, accidentalsSims, accidentalsStandard, accidentalsSteinZimmermann, accidentalsStockhausen These classes contain useful subsets of accidentals, each class essentially providing all of the accidentals glyphs required for a given convention or system.
articulations Contains all articulations, regardless of whether they are intended to be positioned above or below the note/staff.
articulationsAbove, articulationsBelow Contains only those articulations that are positioned either above or below the note/staff, as appropriate.
combiningStaffPositions Contains glyphs that are available in ligatures with the Combining staff position glyphs, in fonts intended for use in text-based applications. (N.B. not implemented in the current Bravura font, which is intended for scoring applications.)
clefs Contains all clefs, regardless of the position on the staff at which they are typically positioned.
clefsC Contains all C clefs.
clefsF Contains all F clefs.
clefsG Contains all G clefs.
dynamics Contains the glyphs in the Dynamics range, which should be scaled differently to other glyphs in fonts designed for use in text-based applications.
forTextBasedApplications Contains glyphs that scoring applications can generally ignore, i.e. these are useful for text-based applications (or for runs of normal text in scoring applications). This contains glyphs like the Beamed groups of notes range, pre-composed stems, pre-composed staff lines, etc.
multiGlyphForms Contains all glyphs that are designed to be used in combination to produce larger forms, e.g. ornaments, wiggly lines, etc.
noteheads Contains all glyphs in all noteheads ranges.
noteheadSetCircled, noteheadSetCircleX, noteheadSetDefault, noteheadSetDiamond, noteheadSetDiamondOld, noteheadSetHeavyX, noteheadSetLargeArrowDown, noteheadSetLargeArrowUp, noteheadSetNamesPitch, noteheadSetNamesSolfege, noteheadSetPlus, noteheadSetRoundLarge, noteheadSetRoundSmall, noteheadSetSacredHarp, noteheadSetSlashed1, noteheadSetSlashed2, noteheadSetSlashHorizontalEnds, noteheadSetSlashVerticalEnds, noteheadSetSquare, noteheadSetTriangleDown, noteheadSetTriangleLeft, noteheadSetTriangleRight, noteheadSetTriangleUp, noteheadSetWithX, noteheadSetX, parenthesesNotehead These classes contain useful subsets of noteheads, each class providing a set of noteheads, e.g. the notehead to be used for quarter notes and shorter, for half notes, for whole notes, etc., for different conventions.
octaves Contains all glyphs relating to octave lines.
ornaments Contains all pre-composed ornament glyphs, excluding the component parts in the Combining strokes for trills and mordents range.
pauses Contains all fermatas/caesuras, regardless of whether they are intended to be positioned above or below the note/staff.
pausesAbove, pausesBelow Contains only those fermatas that are positioned either above or below the note/staff, as appropriate.
rests Contains all rests glyphs.
stemDecorations Contains glyphs that are designed to be positioned on stems. This is a useful class, because the individual glyphs that are intended to be drawn on stems are dotted around various ranges.
wigglesArpeggiato, wigglesArpeggiatoDown, wigglesArpeggiatoUp, wigglesCircularMotion, wigglesQuasiRandom, wigglesTrill, wigglesVibrato, wigglesVibratoVariable These classes contain useful subsets of the Multi-segment lines range.

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