Method DirectionUp

engine/Poseidon/Network/NetworkMsg.cpp:664–672

    m.SetDirectionAndUp(dir, up);
}

Vector3 EncodedMatrix3::DirectionUp() const
{
    float m01 = DecodeFloat16(_01c);
    float m11 = DecodeFloat16(_11c);

    float m21_sq = 1 - m01 * m01 - m11 * m11;
    float m21 = (m21_sq >= 0 ? sqrt(m21_sq) : 0) * _21sign;
    return Vector3(m01, m11, m21);
}