PHNE DRNE angle delta calculations

Begin yaw angle delta calculation
{

Vector a, b;
QAngle yaw;

yaw[pitch] = 0.0f;
yaw[yaw] = cmd->viewangles[yaw];
yaw[roll] = 0.0f;

AngleVectors(orig, a);

AngleVectors(yaw, b);

float delta_yaw = rad2deg(UnitSphereLineSegmentLength( yaw, b ))

}
end yaw angle delta calculation

Begin pitch angle delta calculation
{

Vector a, b;
QAngle pitch;

pitch[pitch] = cmd->viewangles[pitch];
pitch[yaw] = 0.0f;
pitch[roll] = 0.0f;

AngleVectors(orig, a);

AngleVectors(pitch, b);

float delta_pitch = rad2deg(UnitSphereLineSegmentLength( yaw, b ))

}
end pitch angle delta calculation