Struct DistanceInterval 

#[non_exhaustive]
pub struct DistanceInterval {
    pub lower: f64,
    pub upper: f64,
}

A distance certified to lie in [lower, upper]: what CurveEvaluator::path_joint_distances returns for each joint of a curve path.

The bounds are a proof, not an estimate: the true value lies between them. A distance read from stored data alone (a line’s, a circle’s, a sum of stored lengths) is a point interval, lower == upper.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

lower: f64

The largest value the distance is certified not to be below.

upper: f64

The smallest value the distance is certified not to exceed.

Implementations

impl DistanceInterval

pub const fn new(lower: f64, upper: f64) -> DistanceInterval

The interval [lower, upper]. Nothing is checked here; a provider returns lower <= upper, both finite.

pub const fn point(value: f64) -> DistanceInterval

The point interval [value, value]: a distance known exactly.

pub fn width(&self) -> f64

upper - lower.

pub fn midpoint(&self) -> f64

The midpoint, (lower + upper) / 2.

pub fn contains(&self, value: f64) -> bool

Whether value lies in [lower, upper].

pub fn meets(&self, other: &DistanceInterval) -> bool

Whether the two intervals share a point, their ends included: whether a distance certified to self can lie in other (#305).

pub fn is_point(&self) -> bool

Whether it is a point interval.

Trait Implementations

impl Clone for DistanceInterval

fn clone(&self) -> DistanceInterval

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DistanceInterval

impl Debug for DistanceInterval

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

Formats the value using the given formatter.

impl PartialEq for DistanceInterval

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DistanceInterval