//非线性电路电容中的混沌控制系统class CapacitanceEquation : public DifferentialEquation{public:    CapacitanceEquation()    {        m_StartX = 1.0f;        m_StartY = 1.0f;        m_StartZ = 1.0f;        m_ParamA = 8.0f;        m_ParamB = 14.0f;        m_ParamC = 0.5f;        m_ParamD = -1.0f;        m_ParamE = 1.5f;        m_StepT = 0.005f;    }    void Derivative(float x, float y, float z, float& dX, float& dY, float& dZ)    {        float g;        if (x >= 1.0f)        {            g = m_ParamE*x - (m_ParamE - m_ParamD);        }        else if (x <= -1.0f)        {            g = m_ParamE*x + (m_ParamE - m_ParamD);        }        else        {            g = m_ParamD*x;        }        dX = m_ParamA*((m_ParamC-1.0f)*g + y);        dY = g - y + z;        dZ = -m_ParamB*y;    }    bool IsValidParamA() const {return true;}    bool IsValidParamB() const {return true;}    bool IsValidParamC() const {return true;}    bool IsValidParamD() const {return true;}    bool IsValidParamE() const {return true;}};