Struct Hysteresis 

pub struct Hysteresis { /* private fields */ }

The hysteresis state of one pressure signal.

Deliberately a concrete, inspectable struct rather than a closure or a counter hidden inside the engine: §11.3 calls for hysteresis as behaviour that can be tested, and the tests in this file are what guarantee the radar is stable.

Implementations

impl Hysteresis

pub fn new(thresholds: &Thresholds) -> Self

Builds tracker state from sanitized thresholds.

thresholds must already be Thresholds::sanitized; the engine does that once at construction so every tracker inherits a window at least as wide as the sample count it needs.

pub fn observe( &mut self, candidate: PressureState, elapsed: Duration, ) -> MetricState<PressureState>

Feeds one candidate state derived from the current sample.

elapsed is the measured interval since the previous sample (§8.1); it is only used to accumulate Self::held_for, never to decide a state.

Returns MetricState::WarmingUp until sustained_samples observations exist, because below that no sustained claim is possible (§11.3).

pub fn reset(&mut self)

Discards every observation (§11.3: counter reset, sleep/wake).

pub const fn held_for(&self) -> Option<Duration>

How long the current state has been held, once it means anything.

None while warming up: a duration for a state that has not been established would be a fabricated number.

pub const fn state(&self) -> Option<PressureState>

The state currently held, or None while warming up.

pub fn observations(&self) -> usize

How many observations are retained.

pub fn remaining_samples(&self) -> usize

How many observations are still needed before a state can be derived.

Trait Implementations

impl Clone for Hysteresis

fn clone(&self) -> Hysteresis

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Hysteresis

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

Formats the value using the given formatter.