Function pbrt::core::geometry::bnd2_intersect_bnd2

pub fn bnd2_intersect_bnd2<T>(b1: &Bounds2<T>, b2: &Bounds2<T>) -> Bounds2<T> where
    T: Copy + Ord, 

The intersection of two bounding boxes can be found by computing the maximum of their two respective minimum coordinates and the minimum of their maximum coordinates.