2-建造者模式

#-*- coding:utf-8 -*-

#需求：画人物画，通过设计者规划画的顺序
#设计模式：面向对象，建造者模式
#定义建造模式父类，建造模式子类继承该父类
#定义建造者类，用于规划建造过程，调用建造类中的方法

class Build:
    def draw_head(self):
        pass

    def draw_body(self):
        pass

    def draw_arm(self):
        pass

    def draw_leg(self):
        pass

class Fat(Build):
    def draw_head(self):
        print(‘画大头‘)

    def draw_body(self):
        print(‘画胖身体‘)

    def draw_arm(self):
        print(‘画胖胳膊‘)

    def draw_leg(self):
        print(‘画胖腿‘)


class Thin(Build):
    def draw_head(self):
        print(‘画小头‘)

    def draw_body(self):
        print(‘画瘦身体‘)

    def draw_arm(self):
        print(‘画瘦胳膊‘)

    def draw_leg(self):
        print(‘画瘦腿‘)

class Director:
    #定义一个建造者类，接收要操作的实例化对象
    def __init__(self, person):
        self.person = person

    #定义建造方法，将实例化对象要执行的操作进行顺序规划和汇总
    def draw(self):
        self.person.draw_head()
        self.person.draw_body()
        self.person.draw_arm()
        self.person.draw_leg()

fat = Fat()
director = Director(fat)
director.draw()

thin = Thin()
director = Director(thin)
director.draw()