IDP.Math.KGeomLib.createCircle2dByThreePoints() method

通过三点来创建一圆。

Create an circle by input three points.

Signature:

createCircle2dByThreePoints(startPoint: KPoint2d, midPoint: KPoint2d, endPoint: KPoint2d): KCircle2d | null;

Links: createCircle2dByThreePoints(startPoint: KPoint2d, midPoint: KPoint2d, endPoint: KPoint2d): KCircle2d | null;

Parameters

Parameter	Type	Description
startPoint	KPoint2d	圆上第一个点。 The start point of the 2D circle.
midPoint	KPoint2d	圆上第二个点。 The middle point of the 2D circle.
endPoint	KPoint2d	圆上第三个点。 The end point of the 2D circle.

Returns:

KCircle2d | null

返回一个圆，也可能是null（当三点共线时）。

The 2D circle or null (if the three points are colinear).