ArcofCircle ArcofCircle ArcofCircle ArcofCircle calculateCircleCenter calculateStartandEndPoint copy getArcType getCenterPoint getDirection getEndAngle getEndAngle getEndPoint getExtrema getLength getMidPoint getNormal getRadius getRefVec getSecondPoint getStartAngle getStartPoint isClockWise isClosed isInArc mArcType mCenterPoint mClockWise mEndAngle mEndPoint mMidpoint mNormal mRadius mRefVec mSecondPoint mStartAngle mStartPoint Reverse setCenterPoint setDirection setEndAngle setNormal setRadius setReferenceAxis setRefVec setStartAngle

ArcofCircle() [3/4] ArcofCircle ( Base::Vector3d  pt1, Base::Vector3d  pt2, Base::Vector3d  pt3  ) 构造一个圆弧，基于三点 参数 [in] pt1 第一点 [in] pt2 第二点 [in] pt3 第三点