Enum HoldEdge 

pub enum HoldEdge {
    Beat,
    Bar,
    Period(f32),
}

When a held binding takes a new value (ADR-0180 rule 2). Between edges the scene keeps reading the value taken at the last one.

The two named edges are counters the analysis frame already publishes, not conditions this type evaluates: beat is the frame’s own one-frame beat gate and bar is a change in its bar counter. A Period re-samples on the render clock instead, which is the only edge in the vocabulary that exists on a silent stream.

Variants

Beat

Every frame the analysis frame’s beat gate fires.

Bar

Every change of the analysis frame’s bar counter. That counter is the confidence-gated downbeat estimate where the tracker has locked and its own tempo-driven count everywhere else, so this steps on something musical without promising it is the downbeat.

Period(f32)

Every n seconds of render time, n > 0. Re-sampling restarts the interval from the frame it happened on, so a long frame delays the next edge rather than banking a debt of them.

Implementations

impl HoldEdge

pub const NAMED: [HoldEdge; 2]

The two named edges, for the load error’s “expected one of” listing and for the reference, which renders this rather than restating it.

pub fn from_name(name: &str) -> Option<Self>

Parse a named edge, or None if the word is not one. A period is not spelled here – it arrives as a number, or as a numeric string.

pub fn as_str(self) -> &'static str

The canonical name of a named edge – from_name’s inverse. A period has no name and renders as its own number.

Trait Implementations

impl Clone for HoldEdge

fn clone(&self) -> HoldEdge

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HoldEdge

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

Formats the value using the given formatter.

impl PartialEq for HoldEdge

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HoldEdge

impl StructuralPartialEq for HoldEdge