Struct KineticScrollState 

pub struct KineticScrollState {
    pub velocity: f32,
    pub last_pos: Option<Pos2>,
    pub last_time: Option<Instant>,
    pub is_active: bool,
    pub anim_last_time: Option<Instant>,
}

Tracks kinetic (momentum-based) scrolling after a flick gesture.

When the user drags and releases quickly (trackpad or touch), the chart continues to scroll with decaying velocity, providing a natural “flick” feel. The velocity is measured in pixels per second and decays each frame using the configurable damping coefficient.

Fields

velocity: f32

Current scroll velocity in pixels/second (positive = scrolling right).

last_pos: Option<Pos2>

Last pointer position during drag (for velocity calculation).

last_time: Option<Instant>

Timestamp of the last pointer sample.

is_active: bool

Whether kinetic animation is currently running.

anim_last_time: Option<Instant>

Last animation frame time (for delta-time calculation).

Implementations

impl KineticScrollState

pub fn new() -> Self

Create a new idle kinetic scroll state with zero velocity.

Trait Implementations

impl Clone for KineticScrollState

fn clone(&self) -> KineticScrollState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KineticScrollState

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

Formats the value using the given formatter.

impl Default for KineticScrollState

fn default() -> Self

Returns the “default value” for a type.