Method empty

third-party/embreeSrc/common/math/bbox.h:43–43

! tests if box is empty */

    /*! tests if box is empty */
    __forceinline bool empty() const { for (int i=0; i<T::N; i++) if (lower[i] > upper[i]) return true; return false; }

    /*! computes the size of the box */
    __forceinline T size() const { return upper - lower; }