ArcofCircle2D ArcofCircle2D ArcofCircle2D calculateCircleCenter calculateStartandEndPoint copy getCenterPoint getDirection getEndAngle getEndPoint getExtrema getLength getMidPoint getRadius getStartAngle getStartPoint isClockWise isClosed isInArc mCenterPoint mClockWise mEndAngle mEndPoint mRadius mSecondPoint mStartAngle mStartPoint setCenterPoint setDirection setEndAngle setRadius setStartAngle

ArcofCircle2D() [3/3] ArcofCircle2D ( Base::Vector2d  pt1, Base::Vector2d  pt2, Base::Vector2d  pt3  ) 通过三点定弧构造圆弧 基于三个点进行构造圆弧 参数 [in] pt1 第一个点 [in] pt2 第二个点 [in] pt3 第三个点