Function box3d 

pub fn box3d<T, U>(
    min_x: T,
    min_y: T,
    min_z: T,
    max_x: T,
    max_y: T,
    max_z: T,
) -> Box3D<T, U>
where
    T: Copy,

Available on crate feature geometry only.

Shorthand for Box3D::new(Point3D::new(x1, y1, z1), Point3D::new(x2, y2, z2)).