Method cross

utils/cpp_utils/include/vec3.h:159–161

    }

    static inline vec3 cross(const vec3 &l, const vec3 &r) {
        return (l ^ r);
    }

    inline vec3<T> operator-(const vec3 &other) const {
        return vec3<T>(array[0] - other.array[0], array[1] - other.array[1], array[2] - other.array[2]);