base64_decode base64_encode blanks blanksN clamp Console convertTo Distance DistanceP2 fmod Geometry2DType GeometryType GetDuration LogStyle make_vec make_vec operator* operator* operator* operator* operator* operator* operator* operator* operator* operator* operator*= operator+ operator+ operator+ operator+ operator- operator- operator- operator- operator/ operator/ pow ScaleType ScriptFactory sgn tabs tabsN toDegrees toRadians toVector Vector3d Vector3f

operator-() [1/4] DualNumber operator- ( double  a, DualNumber  b  ) 将实数与对偶数相减 将实数与对偶数的实部相减，返回一个新的对偶数对象。 参数 [in] a 实数 [in] b 对偶数 返回 返回实数与对偶数相减的结果