ArcofEllipse2D ArcofEllipse2D calculateStartEndPoint copy getCenterPoint getEndAngle getEndPoint getLength getMajorAxisDir getMajorRadius getMinorRadius getStartAngle getStartPoint isClockWise isClosed mCenterPoint mClockWise mEndAngle mEndPoint mMajorAxisDir mMajorRadius mMinorRadius mStartAngle mStartPoint setCenterPoint setEndAngle setMajorAxisDir setMajorRadius setMinorRadius setStartAngle

setMajorAxisDir() void setMajorAxisDir ( const Base::Vector2d &  majorAxisDir ) 设置基准轴 设置二维椭圆弧的主轴方向 参数 [in] majorAxisDir 主轴方向，即基准轴