Crescendo

class spannertools.Crescendo(direction=None, include_rests=False, overrides=None)

Crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = spannertools.Crescendo()
>>> attach(crescendo, staff[:])
>>> show(staff) 

Lineage

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Bases

Attribute summary

components Gets components in spanner.
descriptor Gets descriptor of crescendo.
direction Gets direction.
include_rests Gets include-rests flag of crescendo.
name Gets spanner name.
overrides Gets overrides.
shape_string Gets shape string of crescendo.
start_dynamic Gets start dynamic of crescendo.
stop_dynamic Gets stop dynamic of crescendo.
__contains__(expr) Is true when spanner contains expr.
__copy__(\*args) Copies spanner.
__eq__(expr) Is true when ID of expr equals ID of Abjad object.
__format__([format_specification]) Formats Abjad object.
__getitem__(expr) Gets item from spanner.
__hash__() Hashes Abjad object.
__len__() Gets number of components in spanner.
__lt__(expr) Is true when spanner is less than expr.
__ne__(expr) Is true when Abjad object does not equal expr.
__repr__() Gets interpreter representation of Abjad object.

Read-only properties

(Spanner).components

Gets components in spanner.

Returns selection.

Crescendo.descriptor

Gets descriptor of crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo()
>>> attach(crescendo, staff[:])
>>> show(staff) 
>>> crescendo.descriptor
'<'

Returns string.

Crescendo.direction

Gets direction.

Positions crescendo above staff:

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo(direction=Up)
>>> attach(crescendo, staff[:])
>>> show(staff) 

Defaults to none.

Set to up, down or none.

Returns up, down or none.

Crescendo.include_rests

Gets include-rests flag of crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo(include_rests=True)
>>> attach(crescendo, staff[:])
>>> show(staff) 

Returns true or false.

(Spanner).name

Gets spanner name.

Returns string.

(Spanner).overrides

Gets overrides.

Returns dict.

Crescendo.shape_string

Gets shape string of crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo()
>>> attach(crescendo, staff[:])
>>> show(staff) 
>>> crescendo.shape_string
'<'

Returns string.

Crescendo.start_dynamic

Gets start dynamic of crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo()
>>> attach(crescendo, staff[:])
>>> show(staff) 
>>> crescendo.start_dynamic is None
True

Returns dynamic or none.

Crescendo.stop_dynamic

Gets stop dynamic of crescendo.

>>> staff = Staff("r4 c'8 d'8 e'8 f'8 r4")
>>> crescendo = Crescendo()
>>> attach(crescendo, staff[:])
>>> show(staff) 
>>> crescendo.stop_dynamic is None
True

Returns dynamic or none.

Special methods

(Spanner).__contains__(expr)

Is true when spanner contains expr. Otherwise false.

Returns true or false.

(Spanner).__copy__(*args)

Copies spanner.

Does not copy spanner components.

Returns new spanner.

(AbjadObject).__eq__(expr)

Is true when ID of expr equals ID of Abjad object. Otherwise false.

Returns true or false.

(AbjadObject).__format__(format_specification='')

Formats Abjad object.

Set format_specification to ‘’ or ‘storage’. Interprets ‘’ equal to ‘storage’.

Returns string.

(Spanner).__getitem__(expr)

Gets item from spanner.

Returns component.

(AbjadObject).__hash__()

Hashes Abjad object.

Required to be explicitly redefined on Python 3 if __eq__ changes.

Returns integer.

(Spanner).__len__()

Gets number of components in spanner.

Returns nonnegative integer.

(Spanner).__lt__(expr)

Is true when spanner is less than expr. Otherwise false.

Trivial comparison to allow doctests to work.

Returns true or false.

(AbjadObject).__ne__(expr)

Is true when Abjad object does not equal expr. Otherwise false.

Returns true or false.

(AbjadObject).__repr__()

Gets interpreter representation of Abjad object.

Returns string.