KCircle3d.getTangent() method
获取圆上一点的法向量。 注意：传入点需要确保落在圆上。
Get circle's tangent vector of a point on the circle. NOTE: the caller need to make sure the point is on the circle.
Signature:
getTangent(point: KPoint3d): KVector3d;
Parameters
Parameter | Type | Description |
|---|---|---|
point | 圆上一点。 A point on the circle. |
Returns:
切向量。
The tangent vector.