从位置参数入手直接建立圆点曲线方程

Directly Constructing and Computing Circle-point Curve via Position Parameters

根据刚体四个有限位置的位移参数及点四位置共圆的等圆周角条件，列出了复极矢量等式．在刚体坐标系上，直接导出了圆点曲线方程，并给出圆点坐标的具体算法．

On the basis of displacement parameters of four finite location of rigid Any and the condition of equalcircumferential angle in four points circle, the equality of compound extreme vector is deduced On rigid bodycoordinate system, the curve equation of circle points and the algorithm for computuing the point coordinatesare directly given out.