absoluteValue angle calFixedAngleAndDistanceAndOnLinePoint calFootOfPerpendicular Cross DistanceToLine DistanceToLineSegment DistanceToPlane Dot epsilon findPointOnLine GetAngle getDotProduct IsEqual IsNull IsOnLineSegment IsOnLineSide isParallelX isParallelY isParallelZ Length magnitude2D maximum minimum Move moveAlongLinePt MoveX MoveY MoveZ Normalize num_type operator!= operator% operator& operator* operator* operator*= operator+ operator+= operator- operator- operator-= operator/ operator/= operator< operator= operator= operator== operator[] operator[] Perpendicular ProjectToLine ProjectToPlane ProjectToPlane RotateX RotateY RotateZ Scale ScaleX ScaleY ScaleZ Set SetX SetY SetZ Sqr traits_type TransformToCoordinateSystem Vector3 Vector3 Vector3 x y z ~Vector3

getDotProduct() template<class _Precision > _Precision getDotProduct ( const Vector3< _Precision > &  v1, const Vector3< _Precision > &  v2  ) const 计算并返回两个三维向量 v1 和 v2 的点积 计算并返回两个三维向量 v1 和 v2 的点积 参数 [in] v1 三维向量 v1 [in] v2 三维向量 v2 返回 返回两个三维向量 v1 和 v2 的点积