8.Bridge 桥接模式（结构型模式）

【1】抽象A==>实现细节b

【2】抽象A==>抽象B<==实现细节b

【3】【抽象B】==相对稳定，也可能变化【实现细节b】==频繁变化

【4】抽象B 不稳定？

思考问题：一个变化是平台（抽象B）的变化，另一个变化是型号（实现细节b）的变化。

【抽象部分B】

public abstract class Tank
{protected TankPlatformImplementation tankImple;public Tank(TankPlatformImplementation tankImple){this.tankImple=tankImple;}public abstract void Shot();public abstract void Run(); public abstract void Trun();
}

public abstract class TankPlatformImplementation
{public abstract void MoveTankTO(Point to);//移动到某个点public abstract void DrawTank();          //画一个Tankpublic abstract void DoShot();            //播放声音，画出轨迹，特效等
}

【实现细节b】各种实际实现通过继承来实现

public class T50:Tank { }
public class T75:Tank { }
public class T90:Tank { }

各种平台不同的实现：

//PC                                   //Mobile
public class PCT50:T50 { }             public class MobileT50:T50 { }
public class PCT75:T75 { }             public class MobileT75:T75 { }
public class PCT90:T90 { }             public class MobileT90:T90 { }

软件加上时间轴，随着时间的变化，动态的创作软件系统。

using System;namespace ConsoleApp2
{internal class Tank_Factory{public static void Main() {TankPlatformImplementation tankImpl = new MobileTankImplementation();T50 tank = new T50(tankImpl);tank.Show();tank.TankImpl = new MobileTankImplementation();tank.Show();Console.WriteLine(tank.ToString());Console.WriteLine("Tank_Factory01");Console.ReadLine();}}public class Point{}//--Tank------------public abstract class Tank{protected TankPlatformImplementation tankImpl;protected Tank(TankPlatformImplementation tankImpl){this.tankImpl = tankImpl;}public TankPlatformImplementation TankImpl{get { return this.tankImpl; }set { this.tankImpl = value; }}public abstract void Show();public abstract void Run();public abstract void Stop();}//--TankPlatformImplementation------------public abstract class TankPlatformImplementation{public abstract void MoveTank(Point to);public abstract void DrawTank();public abstract void DoShot();}//--PCTankImplementation------------------public class PCTankImplementation : TankPlatformImplementation{public override void DoShot(){Console.WriteLine("PCTankImplementation");}public override void DrawTank(){}public override void MoveTank(Point to){}}//--MobileTankImplementation--------------public class MobileTankImplementation : TankPlatformImplementation{public override void DoShot(){Console.WriteLine("MobileTankImplementation");}public override void DrawTank(){}public override void MoveTank(Point to){}}//--T50-------------public class T50 : Tank{public T50(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--T75-------------public class T75 : Tank{public T75(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--T90--------------public class T90 : Tank{public T90(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--PCT50--------------public class PCT50 : T50{public PCT50(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--PCT75--------------public class PCT75 : T75{public PCT75(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--PCT90--------------public class PCT90 : T90{public PCT90(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--MobileT50-------------public class MobileT50 : T50{public MobileT50(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--MobileT75-------------public class MobileT75 : T75{public MobileT75(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}//--MobileT90-------------public class MobileT90 : T90{public MobileT90(TankPlatformImplementation tankImpl) : base(tankImpl){}public override void Run(){tankImpl.MoveTank(new Point());}public override void Show(){tankImpl.DoShot();}public override void Stop(){tankImpl.DrawTank();}}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Security.Policy;
using System.Text;
using System.Threading.Tasks;namespace ConsoleApp2
{internal class Program{static void Main(string[] args){ImageImp temp1 = new LinuxImp();ImageImp temp = new WindowImp();Image imp = new JPGImage();imp.SetImageImp(temp);imp.Show("zhongguo");Image imp1= new PNGImage();imp1.SetImageImp(temp1);imp1.Show("zhongguo");Console.WriteLine("Program02--------------");Console.ReadLine();}}//-----------------------------------------------public class Matix{public int x;public int y;public Matix(int x, int y){this.x = x;this.y = y;}}public abstract class ImageImp { public abstract void DoPaint(Matix m); }public class WindowImp : ImageImp{public override void DoPaint(Matix m){Console.WriteLine("在window系统中显示图像。");}}public class LinuxImp : ImageImp{public override void DoPaint(Matix m){Console.WriteLine("在Linux系统中显示图像。");}}public class UnixxImp : ImageImp{public override void DoPaint(Matix m){Console.WriteLine("在Linux系统中显示图像。");}}public abstract class Image {protected ImageImp imageImp;public void SetImageImp(ImageImp imageImp) { this.imageImp = imageImp; }public abstract void Show(string s);}public class JPGImage : Image{public override void Show(string s){imageImp.DoPaint(new Matix(10, 20));Console.WriteLine("JpgImp---");}}public class PNGImage : Image{public override void Show(string s){imageImp.DoPaint(new Matix(10, 30));Console.WriteLine("PNGImp---");}}//----------------------------------------------public abstract class Implemetor//实施者{public abstract void OperationImpl();//活动，业务}public class ConcreteImplementor : Implemetor{public override void OperationImpl(){throw new NotImplementedException();}}public abstract class Abstraction {protected Implemetor impl; //定义实现类接口对象public void SetImpl(Implemetor impl) {this.impl = impl;}public abstract void Operation();//声明抽象业务方法}public class RefinedAbstraction : Abstraction{public override void Operation(){impl.OperationImpl(); //调用实现类代码}}}

struct: