qschemaitems¶

Abstract Classes

QSchemaItem

Abstract q-schema item.

abstract class abjadext.nauert.qschemaitems.QSchemaItem(search_tree=None, tempo=None)[source]¶

Abstract q-schema item.

Represents a change of state in the timeline of a quantization process.

Attributes Summary

`search_tree`	The optionally defined search tree.
`tempo`	The optionally defined tempo.

Read-only properties

search_tree¶

The optionally defined search tree.

Returns search tree or none.

tempo¶: The optionally defined tempo.

Classes

`BeatwiseQSchemaItem`	Beatwise q-schema item.
`MeasurewiseQSchemaItem`	Measurewise q-schema item.

class abjadext.nauert.qschemaitems.BeatwiseQSchemaItem(beatspan=None, search_tree=None, tempo=None)[source]¶

Beatwise q-schema item.

Represents a change of state in the timeline of an unmetered quantization process.

>>> nauert.BeatwiseQSchemaItem()
BeatwiseQSchemaItem(beatspan=None, search_tree=None, tempo=None)

Defines a change in tempo:

>>> nauert.BeatwiseQSchemaItem(tempo=((1, 4), 60))
BeatwiseQSchemaItem(beatspan=None, search_tree=None, tempo=MetronomeMark(reference_duration=Duration(1, 4), units_per_minute=60, textual_indication=None, custom_markup=None, decimal=False, hide=False))

Defines a change in beatspan:

>>> nauert.BeatwiseQSchemaItem(beatspan=(1, 8))
BeatwiseQSchemaItem(beatspan=Duration(1, 8), search_tree=None, tempo=None)

Attributes Summary

`__repr__`	Gets repr.
`beatspan`	The optionally defined beatspan duration.

Special methods

overridden __repr__()[source]¶: Gets repr.

Read-only properties

beatspan¶: The optionally defined beatspan duration.

(QSchemaItem).search_tree¶

The optionally defined search tree.

Returns search tree or none.

(QSchemaItem).tempo¶: The optionally defined tempo.

class abjadext.nauert.qschemaitems.MeasurewiseQSchemaItem(search_tree=None, tempo=None, time_signature=None, use_full_measure=None)[source]¶

Measurewise q-schema item.

Represents a change of state in the timeline of a metered quantization process.

>>> q_schema_item = nauert.MeasurewiseQSchemaItem()

Defines a change in tempo:

>>> nauert.MeasurewiseQSchemaItem(tempo=((1, 4), 60))
MeasurewiseQSchemaItem(search_tree=None, tempo=MetronomeMark(reference_duration=Duration(1, 4), units_per_minute=60, textual_indication=None, custom_markup=None, decimal=False, hide=False), time_signature=None, use_full_measure=None)

Defines a change in time signature:

>>> nauert.MeasurewiseQSchemaItem(time_signature=(6, 8))
MeasurewiseQSchemaItem(search_tree=None, tempo=None, time_signature=TimeSignature(pair=(6, 8), hide=False, partial=None), use_full_measure=None)

Tests for beatspan given a defined time signature:

>>> nauert.MeasurewiseQSchemaItem(time_signature=(6, 8)).beatspan
Duration(1, 8)

Attributes Summary

`__repr__`	Gets repr.
`beatspan`	The beatspan duration, if a time signature was defined.
`time_signature`	The optionally defined TimeSignature.
`use_full_measure`	If true, use the full measure as the beatspan.

Special methods

overridden __repr__()[source]¶: Gets repr.

Read-only properties

beatspan¶: The beatspan duration, if a time signature was defined.

(QSchemaItem).search_tree¶

The optionally defined search tree.

Returns search tree or none.

(QSchemaItem).tempo¶: The optionally defined tempo.

time_signature¶: The optionally defined TimeSignature.

use_full_measure¶: If true, use the full measure as the beatspan.