class StandardEquation : public DiscreteEquation{public:    StandardEquation()    {        m_StartX = 0.25f;        m_StartY = 0.25f;        m_ParamA = 1.0f;    }    void IterateValue(float x, float y, float& outX, float& outY) const    {        outX = fmodf(x + y, PI*2.0f);        outY = fmodf(y - m_ParamA*sinf(x + y), PI*2.0f);    }    bool IsValidParamA() const {return true;}};