alongLineAngleMoveDistancePt alongLineNormalDir alongLineNormalMoveDistancePt Angle Distance Distance FromPolar GetAngle IsEqual IsLess IsNull Length moveAlongLine Negate Normalize operator* operator* operator*= operator+ operator+ operator+= operator- operator- operator-= operator/ operator/= operator= operator== Perpendicular perpendicularPointOnLine ProjectToLine Rotate Scale Set Sqr Vector2d Vector2d Vector2d Vector2d x y

alongLineNormalDir() Vector2d alongLineNormalDir ( const Vector2d &  rclP0, const Vector2d &  rclP1  ) const 计算直线 P0P1 的法线方向 计算直线 P0P1 的法线方向。 参数 [in] rclP0 直线的起点 [in] rclP1 直线的终点 返回 法线方向