Enum ControlSource 

pub enum ControlSource {
    Step(Vec<(u64, f64)>),
    Linear(Vec<(u64, f64)>),
}

A keyframed value curve, sampled by PTS. Values are f64 regardless of the property’s kind; the conversion to the property’s type happens at apply.

Both variants clamp outside their keyframe range: before the first keyframe the first value holds, after the last one the last value holds.

Variants

Step(Vec<(u64, f64)>)

Hold each keyframe’s value until the next keyframe’s time (a discrete knob: a mode switch, a boolean).

Linear(Vec<(u64, f64)>)

Interpolate linearly between the surrounding keyframes (a smooth pan, fade, or zoom).

Implementations

impl ControlSource

pub fn step(keys: impl IntoIterator<Item = (u64, f64)>) -> Self

A step curve over keys ((pts_ns, value)), sorted here so the caller need not supply them in order.

pub fn linear(keys: impl IntoIterator<Item = (u64, f64)>) -> Self

A linear curve over keys ((pts_ns, value)), sorted here.

pub fn value_at(&self, t_ns: u64) -> f64

The curve’s value at t_ns. Clamps to the end values outside the keyframe range; 0.0 for a curve with no keyframes, which ControlProgram::resolve rejects before a run can sample it.

Trait Implementations

impl Clone for ControlSource

fn clone(&self) -> ControlSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ControlSource

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

Formats the value using the given formatter.

impl PartialEq for ControlSource

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ControlSource