Method operator-

utils/cpp_utils/include/vec3.h:65–67

    }

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

    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]);