实验8

任务3

from turtle import *

def square(size=50, rgb='pink'):
    '''绘制正方形
    参数size指定边长
    参数rgb指定画笔颜色
    如果没有给参数，采用默认值
    '''
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)


def main():
    setup(800, 600)
    speed(0)

    n = 10
    for i in range(n):
        square(80,'orange')
        left(360/n)

    hideturtle()
    done()


if __name__ == '__main__':
    main()

任务4

from turtle import *

setup(800, 600)
pencolor('pink')

n = 10
speed(0)
for i in range(n):
    # 绘制一片花瓣
    for j in range(2):
        circle(80, 90)
        left(90)

    right(360/n)

hideturtle()
done()

任务5

from turtle import *

setup(800, 600)
bgcolor('black')
pencolor('white')
speed(0)

angle = 0
size = 2

n = 10
for i in range(n):
    for j in range(4):
        fd(size)
        angle += 72
        seth(angle)
        size += 5

hideturtle()
done()

任务6

from turtle import *
from random import *
x,y = map(int,input('输入矩形宽度和高度：').split(','))
setup(800,600)
colormode(255)
speed(0)
def react(a,b):
    for i in range(2):
        fd(a)
        right(90)
        fd(b)
        right(90)
penup()
goto(-(10*x),0)
pendown()
for i in range(20):
    r = randint(0,255)
    g = randint(0,255)
    b = randint(0,255)
    color(r,g,b)
    fillcolor(r,g,b)
    begin_fill()
    react(x,y)
    end_fill()
    penup()
    fd(x)
    pendown()
done()