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

getMinorRadius() double getMinorRadius ( void  ) const 获取副轴半径 获取二维椭圆的副轴半径