inline void aabb_extend_by_aabb( AABB& aabb, const AABB& other ){
AABBExtend< IntegralConstant<0> >::apply( aabb, other );
AABBExtend< IntegralConstant<1> >::apply( aabb, other );
inline void aabb_extend_by_aabb( AABB& aabb, const AABB& other ){
AABBExtend< IntegralConstant<0> >::apply( aabb, other );
AABBExtend< IntegralConstant<1> >::apply( aabb, other );