Function rust_3d::index_closest_intersecting

pub fn index_closest_intersecting<'c, I, HB>(
    ray: &Ray3D, 
    hbs: I
) -> Option<(Point3D, usize)> where
    I: Iterator<Item = &'c HB>,
    HB: 'c + HasBoundingBox3DMaybe, 

Returns the index of the closest intersection with the ray