Out-of-range settings of angle_start and angle_end should result in WARN message #58
Description
For start_angle and end_angle, the documentation states
Start angle of scan in radians, if both start and end angle are equal, all angels are regarded. 0° is at the front of the scanner.
End angle of scan in radians, if both start and end angle are equal, all angels are regarded. 0° is at the front of the scanner.
For both angles set equal, the node behaves as documented. A hint towards the expected range of values should be added to the documentation. 0° is pointed to the front, which differs from the 0° printed on the nanoscan3. 225° is equal to 2,35619 rad.
If one value is out of range for the scanner, e.g. >2.4 for end_angle, the node stops publishing. This should result in a WARN message for the node.