copy Ellipse2D Ellipse2D getCenterPoint getLength getMajorAxisDir getMajorRadius getMinorRadius isClosed mCenterPoint mMajorAxisDir mMajorRadius mMinorRadius setCenterPoint setMajorAxisDir setMajorRadius setMinorRadius ~Ellipse2D

getMajorRadius() double getMajorRadius ( void  ) const 获取主轴半径 获取二维椭圆的主轴半径