Struct PerformanceSourceState 

pub struct PerformanceSourceState {
    pub held_notes: BTreeMap<PerformanceNoteKey, HeldPerformanceNote>,
    pub sustain_pedal: bool,
    pub sostenuto_pedal: bool,
    pub octave_shift: i8,
    pub transpose: i8,
    pub scale_lock: Option<ScaleLock>,
    pub channel: Channel,
}

Mutable performance state tracked by a source.

Holds the currently sounding notes plus the transforms applied to incoming gestures: sustain pedal, octave shift, transpose, and optional scale lock.

Fields

held_notes: BTreeMap<PerformanceNoteKey, HeldPerformanceNote>

Notes currently held, keyed by channel and pitch.

sustain_pedal: bool

Whether the sustain pedal is down.

sostenuto_pedal: bool

Whether the sostenuto pedal is down.

octave_shift: i8

Octave shift applied to incoming pitches.

transpose: i8

Semitone transpose applied to incoming pitches.

scale_lock: Option<ScaleLock>

Optional scale lock snapping incoming pitches.

channel: Channel

Default channel for the source.

Implementations

impl PerformanceSourceState

pub fn new(channel: Channel) -> Self

Creates empty state defaulting to channel.

pub fn held_note_count(&self) -> usize

Returns the number of notes currently held.

Trait Implementations

impl Clone for PerformanceSourceState

fn clone(&self) -> PerformanceSourceState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PerformanceSourceState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for PerformanceSourceState

impl PartialEq for PerformanceSourceState

fn eq(&self, other: &PerformanceSourceState) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PerformanceSourceState