Method bl_corner

dlib/geometry/drectangle.h:86–87

        ) const { return dlib::vector<double,2>(left(), top()); }

        const dlib::vector<double,2> bl_corner (
        ) const { return dlib::vector<double,2>(left(), bottom()); } 

        const dlib::vector<double,2> tr_corner (
        ) const { return dlib::vector<double,2>(right(), top()); }