check (method)¶

check(self)[source]¶

assert that the arc is correct (begin != center)

Parameters:	self (Arc2) – An Arc2 object
Returns:
Return type:	None
Raises:	`PointArc2Error` – The beginning point and the ending point of an Arc2 can’t be the same `AngleArc2Error` – An Arc2 can’t have a null opening angle