Enum FrictionModel 

pub enum FrictionModel {
    Isotropic,
    ToblerHiking,
    SymmetricSlope {
        slope_weight: f64,
    },
    AsymmetricSlope {
        uphill_weight: f64,
        downhill_weight: f64,
    },
}

Anisotropic friction model for direction-dependent costs

Variants

Isotropic

Isotropic: same cost in all directions (default)

ToblerHiking

Tobler’s hiking function: speed = 6 * exp(-3.5 * |tan(slope) + 0.05|) Cost is inversely proportional to speed.

SymmetricSlope

Symmetric slope friction: cost increases with absolute slope gradient cost_factor = 1 + |dz| * slope_weight / distance

Fields

slope_weight: f64

Weight factor for slope contribution

AsymmetricSlope

Asymmetric friction: uphill is harder than downhill cost_factor_uphill = 1 + dz * uphill_weight / distance (if dz > 0) cost_factor_downhill = 1 + |dz| * downhill_weight / distance (if dz < 0)

Fields

uphill_weight: f64

Weight factor for uphill movement

downhill_weight: f64

Weight factor for downhill movement

Trait Implementations

impl Clone for FrictionModel

fn clone(&self) -> FrictionModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FrictionModel

impl Debug for FrictionModel

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

Formats the value using the given formatter.

impl Default for FrictionModel

fn default() -> FrictionModel

Returns the “default value” for a type.

impl PartialEq for FrictionModel

fn eq(&self, other: &FrictionModel) -> 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 StructuralPartialEq for FrictionModel