外观（门面）模式--Facade

一、代码示例

#include <iostream>
using namespace std;

class Carmera {
public:
    void turnOn() {
        cout << "相机启动" << endl;
    }
    void turnOff() {
        cout << "相机关闭" << endl;
    }
};

class Light {
public:
    void turnOn() {
        cout << "照明灯开启" << endl;
    }
    void turnOff() {
        cout << "照明灯关闭" << endl;
    }
};
class Sensor {
public:
    void active() {
        cout << "传感器启动" << endl;
    }
    void deactive() {
        cout << "传感器关闭" << endl;
    }
};

class Alarm {
public:
    void active() {
        cout << "报警器启动" << endl;
    }
    void deactive() {
        cout << " 报警器关闭" << endl;
    }
};

class SecuritFacade {
public:
    SecuritFacade() {
        Carmera* m_pCarmera = new Carmera;
        Light* m_pPLight = new Light;
        Sensor* m_pSensor = new Sensor;
        Alarm* m_pAlaram = new Alarm;
    }
    void active() {
        m_pCarmera->turnOn();
        m_pPLight->turnOn();
        m_pSensor->active();
        m_pAlaram->active();
    }
    void deactive() {
        m_pCarmera->turnOff();
        m_pPLight->turnOff();
        m_pSensor->deactive();
        m_pAlaram->deactive();
    }
private:
    Carmera* m_pCarmera;
    Light* m_pPLight ;
    Sensor* m_pSensor ;
    Alarm* m_pAlaram ;
};
//LOD
int main() {
    SecuritFacade facade;
    

    cout << "-----------启动系统" << endl;
    facade.active();
    //
    cout << "----------关闭系统" << endl;
    facade.deactive();
    system("pause");
    return 0;
}