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

getCenterPoint() Base::Vector3d getCenterPoint ( ) const 获取中心点 获取三维椭圆弧中心点