封装、继承、多态基础

最新推荐文章于 2024-09-28 20:55:03 发布

weixin_34228662

最新推荐文章于 2024-09-28 20:55:03 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/mclll520/p/7814392.html

本文介绍了一个Unity项目中的抽象基类Shape及其派生类Circle和Rectangle的实现方式，通过这些类实现了不同形状的面积和周长计算，并展示了如何使用多态特性在一个列表中管理多种形状。

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    身是菩提树，心如明镜台，时时勤拂拭，勿使惹尘埃。
                我们的未来没有BUG              
* ==============================================================================
* Filename: AbstractScript
* Created:  $time$
* Author:   WYC
* Purpose:  封装、继承、多态
* ==============================================================================
*/
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AbstractScript : MonoBehaviour {

    
    void Start () {
        Circle circle = new Circle();
        circle.R = 20;

        Rectangle rectangle = new Rectangle();
        rectangle.Width = 20;
        rectangle.Height = 30;

        List<Shape> shapeList = new List<Shape>();
        shapeList.Add(circle);
        shapeList.Add(rectangle);

        foreach (var shape in shapeList)
        {
            shape.PrintArea(shape.CalculateArea());
            shape.PrintPerimeter(shape.CalculatePerimeter());
        }

    }
}

public abstract class Shape {

    public string ShapeName { get; private set; }

    public Shape(string shapeName) {
        ShapeName = shapeName;
    }

    public virtual void PrintPerimeter(double perimeter) {
        Debug.Log(ShapeName + "perimeter:" + perimeter);
    }

    public virtual void PrintArea(double area) {
        Debug.Log(ShapeName + "Area:" + area);
    }

    public abstract double CalculatePerimeter();

    public abstract double CalculateArea();
}
public class Circle : Shape
{
    public double R { get; set; }

    public Circle() : base("圆") {
        this.R = 0;
    }

    public override double CalculatePerimeter()
    {
        return 2 * Math.PI * R;
    }

    public override double CalculateArea()
    {
        return Math.PI * R * R;
    }
}

public class Rectangle : Shape
{
    public double Width { get; set; }
    public double Height { get; set; }

    public Rectangle() : base("长方形")
    {
        this.Width = 0;
        this.Height = 0;
    }

    public override double CalculatePerimeter()
    {
        return (Width + Height) * 2;
    }

    public override double CalculateArea()
    {
        return Width * Height;
    }
}