实验6 turtle绘图与python库应用编程体验

实验任务一

task1_1

from turtle import *

def move(x,y):
    penup()
    goto(x,y)
    pendown()

def draw(n,size= 100):
    for i in range(n):
        fd(size)
        left(360/n)

def main():
    pensize(2)
    pencolor('red')

    move(-200,0)
    draw(3)

    move(0,0)
    draw(4)

    move(200,0)
    draw(5)

    hideturtle()
    done()

main()

运行结果截图

task1_2

from turtle import *
def moveto(x, y):
    penup()
    goto(x, y)
    pendown()
def main():
    pensize(2)
    pencolor('blue')
    moveto(-150, 0)
    circle(50)
    moveto(0, 0)
    circle(50, steps = 4)
    moveto(150, 0)
    circle(50, steps = 5)
    moveto(300, 0)
    circle(50, steps = 6)
    hideturtle()
    done()
main()

运行结果截图

 实验任务二

task2_1

from turtle import *
def moveto(x, y):
    penup()
    goto(x, y)
    pendown()
def main():
    setup(800, 600)
    radius = 20 # 圆初始半径
    offset = 20 # 同心圆每次位移量
    for i in range(9):
        moveto(0, -radius)
        circle(radius)
        radius += offset
    hideturtle()
    done()
main()

运行结果截图

task2_2

from turtle import *
from random import random
def moveto(x, y):
    penup()
    goto(x, y)
    pendown()
def gen_color():
    return tuple((random() for i in range(3)))
def main():
    setup(800, 600)
    radius = 180 # 圆初始半径
    offset = 20 # 同心圆每次位移量
    for i in range(8):
        moveto(0, -radius)
        color(gen_color())
        begin_fill()
        circle(radius)
        end_fill()

        radius -= offset

    hideturtle()
    done()

main()

 运行结果截图

若半径从小到大画不能完成题目要求，最后只得到一个颜色的大圆

 实验任务三

task3_1

from turtle import *
def square(size = 50, rgb = 'orange'):
    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)
        left(360/n)
    hideturtle()
    done()
main()

运行结果截图

task3_2

from turtle import *
speed(0)
setup(800, 600)
pencolor('pink')
n = 10
for i in range(10):
    for j in range(2):
        circle(80, 90)
        left(90)
    right(360/n)
hideturtle()
done()

运行结果截图

实验任务四

from turtle import *
setup(800, 600)
bgcolor('black')
pencolor('white')
speed(0)
angle = 0
size = 2
n = 5 # 螺旋n边形
count = 50 # 循环次数
for i in range(count):
    fd(size)
    angle += 360/n
    seth(angle)
    size += 5
hideturtle()
done()

运行结果截图

 实验任务五

task5_1

from turtle import *
def move_to(a,b):
    penup()
    goto(a,b)
    pendown()
def main():
    move_to(-100,-100)
    color('black')
    begin_fill()
    for i in range(4):
        fd(200)
        left(90)
    end_fill()
    move_to(0,-100)
    color('red')
    begin_fill()
    left(45)
    fd(100*2**(1/2))
    for i in range(3):
        left(90)
        fd(100*2**(1/2))
    end_fill()
    hideturtle()
    done()
main()

运行结果截图

 task5_2

from turtle import *
pensize(2)
pencolor('blue')
r = 40
d = 20
for i in range(5):
    fd(r)
    left(90)
    circle(r,90)
    left(90)
    fd(r)
    left(90)
    r += d
hideturtle()
done()

运行结果截图

 实验任务六

绘制条状彩色颜色图谱

from turtle import *
from random import random
speed(0)
def move_to(a,b):
    penup()
    goto(a,b)
    pendown()

def gen_color():
    return tuple((random() for i in range(3)))

def main():
    setup(800,600)
    move_to(-100,0)
    for i in range(20):
        color(gen_color())
        begin_fill()
        for i in range(2):
            fd(10)
            left(90)
            fd(32)
            left(90)
        end_fill()
        fd(10)
    done()
    hideturtle()
main()

运行结果截图

 绘制一个简单的吃豆人图案

from turtle import *
speed(0)
def move_to(a,b):
    penup()
    goto(a,b)
    pendown()
def p_c(a,b,c,r):
    move_to(a,b)
    color(c)
    begin_fill()
    circle(r)
    end_fill()
bgcolor('black')
color('yellow')
begin_fill()
move_to(100,100)
left(135)
circle(100,270)
left(90)
fd(100)
right(90)
fd(100)
end_fill()
p_c(45,75,'black',8)
p_c(37,84,'white',2)
hideturtle()
done()

 运行结果截图