Function continuous_aabb3_aabb3 

pub fn continuous_aabb3_aabb3<S>(a: &Aabb3<S>, b: &Aabb3<S>) -> Option<Aabb3<S>>
where
    S: OrderedRing + Debug,

Continuous intersection test of 3D axis-aligned bounding boxes.

AABBs that are merely touching return no intersection:

let a = Aabb3::from_points ([ 0.0, 0.0, 0.0].into(), [1.0, 1.0, 1.0].into());
let b = Aabb3::from_points ([-1.0, 0.0, 0.0].into(), [0.0, 1.0, 1.0].into());
assert!(continuous_aabb3_aabb3 (&a, &b).is_none());