Struct StepResponse 

pub struct StepResponse {
    pub rise_frames: u32,
    pub fall_frames: u32,
}

How many frames a captured response took to settle after a step up and after the matching step down (Plan 0037, ADR-0039).

The whole point of ADR-0035’s { attack, release } pair is that these two differ; a scalar [smoothing] entry makes them equal by construction.

Fields

rise_frames: u32

Frames from the step up until the frame settled at SETTLE_FRAC.

fall_frames: u32

Frames from the step down until the frame settled at SETTLE_FRAC.

Implementations

impl StepResponse

pub fn ratio(self) -> f32

fall / rise — the asymmetry, which is the number that reads.

This is a pixel-domain ratio, not a parameter-domain one. A scene’s response to its own parameter is rarely linear, so the value differs from the ratio of the [smoothing] constants themselves (ADR-0039); only its distance from 1.0 is meaningful. A frame that never moved reports 0.0 rather than dividing by zero.

Trait Implementations

impl Clone for StepResponse

fn clone(&self) -> StepResponse

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StepResponse

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

Formats the value using the given formatter.

impl PartialEq for StepResponse

fn eq(&self, other: &StepResponse) -> 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 StepResponse

impl Eq for StepResponse

impl StructuralPartialEq for StepResponse