Contains

Contains(
    type: EdgeType,
    origin: EdgeOrigin = EdgeOrigin.ASSERTED,
    anchor: TimingAnchor = TimingAnchor.ONSET,
    displacement: Duration | None = None,
)

From a LineGroup to the head of one of its lines: the line starts at the group’s origin plus the displacement. A group has no offset, so the anchor is always the origin and only displacement can be set. A Score’s CONTAINS edges are plain OmkEdges, not this class: a score is not a timing origin.

>>> from openmusickit.systems.wsmn.temporal.symbols import whole
>>> Contains(displacement=whole)
Contains(displacement=MetricalDuration(1, 1))
>>> Contains().displacement is None, Contains().type
(True, <EdgeType.CONTAINS: 'contains'>)

Attributes

Name	Description
origin
meta
id
displacement
type
anchor

Methods

Name	Description
nudge	Nudges the displacement of this edge in the specified direction by the specified amount.
__repr__

nudge

nudge(direction: NudgeDirection, amount: Duration)

Nudges the displacement of this edge in the specified direction by the specified amount.

The displacement is a signed Duration: negative means the target starts before the anchor.

>>> from openmusickit.systems.wsmn.temporal.symbols import quarter, half
>>> edge = Branch()
>>> edge.nudge(NudgeDirection.FORWARD, quarter)
>>> edge.nudge(NudgeDirection.BACKWARD, half)
>>> edge.displacement
MetricalDuration(-1, 4)

Raises

Name	Type	Description
	TemporalCompatibilityError	if amount belongs to a different temporal system than the current displacement.

__repr__

__repr__()