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

ProjectToLine() void ProjectToLine ( const Vector2d &  point, const Vector2d &  line  ) 将向量投影到一条直线上 将向量投影到由点 point 和方向向量 line 定义的直线上。 参数 [in] point 直线上的点 [in] line 直线的方向向量