Function discrete_interval

pub fn discrete_interval<S>(a: &Interval<S>, b: &Interval<S>) -> bool
where
    S: Ring,

Discrete intersection test of 1D axis-aligned bounding boxes (intervals).

AABBs that are merely touching are not counted as intersecting:

let a = Interval::from_points ( 0.0, 1.0);
let b = Interval::from_points (-1.0, 0.0);
assert!(!discrete_interval (&a, &b));