桥接模式：就是进行拼接组装

应用举例：
1.定义了形状，抽象形状接口，圆，矩形
2.定义了颜色，抽象颜色接口，红色，蓝色
3，怎么桥接，抽象具体形状和具体颜色的组合，蓝色矩形，红色圆

1.形状

#include <iostream>
#include <string>// 抽象部分：形状接口
class Shape {
public:virtual void draw() = 0; // 纯虚函数，需要子类实现
};// 具体实现：圆形
class Circle : public Shape {
public:void draw() override {std::cout << "Drawing Circle" << std::endl;}
};// 具体实现：矩形
class Rectangle : public Shape {
public:void draw() override {std::cout << "Drawing Rectangle" << std::endl;}
};

2.颜色

// 抽象部分：颜色接口
class Color {
public:virtual void fill() = 0; // 纯虚函数，需要子类实现
};// 具体实现：红色
class Red : public Color {
public:void fill() override {std::cout << "Filling with Red color" << std::endl;}
};// 具体实现：蓝色
class Blue : public Color {
public:void fill() override {std::cout << "Filling with Blue color" << std::endl;}
};

3.桥接部分

// 桥接部分：具体形状和具体颜色的组合
class BridgeShape {
protected:Shape* shape;Color* color;public:BridgeShape(Shape* shape, Color* color) : shape(shape), color(color) {}void drawAndFill() {shape->draw();color->fill();}
};// 具体桥接实现：红色圆形
class RedCircle : public BridgeShape {
public:RedCircle() : BridgeShape(new Circle(), new Red()) {}
};// 具体桥接实现：蓝色矩形
class BlueRectangle : public BridgeShape {
public:BlueRectangle() : BridgeShape(new Rectangle(), new Blue()) {}
};

运行一下

int main() {RedCircle redCircle;BlueRectangle blueRectangle;redCircle.drawAndFill();blueRectangle.drawAndFill();return 0;
}