/// <summary> Sets the Pitch and Yaw angles by a heading-at vector. Roll is 0. </summary>
public void SetByAtVector(Vec3f at)
{
at = at.Normalise();
Pitch = -(float)Math.Acos(at.Y) + PI / 2; // +PI/2 so the default value is 0 and not -90
Pitch = ClampToPI(Pitch);
Yaw = (float)Math.Atan2(-at.X, at.Z);
Roll = 0;
}
public static float GetYawFromAtVector(Vec3f at)
{
at = at.Normalise();
return((float)Math.Atan2(-at.X, at.Z));
}