Struct WeidmannCurve 

pub struct WeidmannCurve {
    pub free_speed: f64,
    pub gamma: f64,
    pub jam_density: f64,
}

One empirical speed-density reference curve.

Fields

free_speed: f64

Free-flow speed in m/s.

gamma: f64

Weidmann exponential coefficient.

jam_density: f64

Jam density in pedestrians per square metre.

Implementations

impl WeidmannCurve

pub const WEIDMANN_1993: Self

Weidmann (1993) indoor walking reference curve.

pub fn speed_at_density(self, rho: f64) -> f64

Evaluate v(rho) in m/s at density rho in pedestrians/m^2.

The curve saturates to free_speed as density approaches zero and to 0 at or above jam density.

Trait Implementations

impl Clone for WeidmannCurve

fn clone(&self) -> WeidmannCurve

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WeidmannCurve

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

Formats the value using the given formatter.

impl Default for WeidmannCurve

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for WeidmannCurve

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

impl StructuralPartialEq for WeidmannCurve