Struct SpringDescription 

pub struct SpringDescription {
    pub mass: f64,
    pub stiffness: f64,
    pub damping: f64,
}

A critically-damped-family spring’s physical parameters, feeding a Simulation built from ScrollPhysics::spring (Flutter’s SpringDescription).

Fields

mass: f64

The spring’s mass.

stiffness: f64

The spring’s stiffness.

damping: f64

The spring’s damping coefficient.

Implementations

impl SpringDescription

pub fn with_damping_ratio( mass: f64, stiffness: f64, ratio: f64, ) -> SpringDescription

Derive damping from a damping ratio instead of stating it directly — damping = 2 · ratio · sqrt(mass · stiffness) (Flutter’s SpringDescription.withDampingRatio).

pub fn default_scroll_spring() -> SpringDescription

Flutter’s _kDefaultSpring: the spring an overscrolled bouncing surface uses to return to its edge.

Trait Implementations

impl Clone for SpringDescription

fn clone(&self) -> SpringDescription

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SpringDescription

impl Debug for SpringDescription

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

Formats the value using the given formatter.

impl PartialEq for SpringDescription

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SpringDescription