public void Test_S2_GetPointToRightS1ChordAngle()
{
S2Point a = S2LatLng.FromDegrees(0, 0).ToPoint();
S2Point b = S2LatLng.FromDegrees(0, 5).ToPoint(); // east
S1Angle kDistance = S2Testing.MetersToAngle(10);
S2Point c = S2.GetPointToRight(a, b, new S1ChordAngle(kDistance));
Assert2.Near(new S1Angle(a, c).Radians, kDistance.Radians, 1e-15);
// CAB must be a right angle with C to the right of AB.
Assert2.Near(S2.TurnAngle(c, a, b), -S2.M_PI_2 /*radians*/, 1e-15);
}
