怎么实现相切、相切、相切画圆的功能？

gyl

画圆中有一种方法是“相切、相切、相切”，请问如何用程序实现？
或者有没有办法求出这三个切点的坐标？
要相切的对象包括直线和圆弧。

CSharpBoy

用AcGe几何库，构造三条曲线相切的圆。

AcGeCircArc2d &

set(

const AcGeCurve2d& curve1,

const AcGeCurve2d& curve2,

const AcGeCurve2d& curve3,

double& param1,

double& param2,

double& param3,

Adesk::Boolean& success);

curve1 Input any 2D curve
curve2 Input any 2D curve
curve3 Input any 2D curve
param1 Input parameter value on curve1 where arc touches curve
param2 Input parameter value on curve2 where arc touches curve
param3 Input parameter value on curve3 where arc touches curve
success Output to indicate whether the arc was computed successfully

Changes the definition of the arc to be tangent to the three input curves. This function always returns a full circle. If this function returns a value for success that is Adesk::kFalse, then this function has not changed the object.