实验六 turtle绘图与python库应用编程体验

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()

 

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()

 

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()

 

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()

 

from turtle import *


def square(size=50, rgb='pink'):
    """
    绘制正方形
    :para: size:int 指定边长 (如未指定参数，使用默认值）
    :para: c: str 指定画笔颜色值 (如未指定参数，使用默认值）
    """
    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, rgb='orange')
        left(360/n)

    hideturtle()
    done()


main()

 

from turtle import *

speed(0)
setup(800, 600)
pencolor('pink')

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

    right(360/n)

hideturtle()
done()

 

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()

 

from turtle import *


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


setup(800, 600)
speed(0)
moveto(-100, -100)


def fill_square(rgb, sl):
    fillcolor(rgb)
    begin_fill()
    for i in range(4):
        fd(sl)
        left(90)
    end_fill()
    hideturtle()


fill_square('black', 200)

moveto(0, -100)
left(45)
fill_square('red', 100*2**0.5)

done()

 

from turtle import *

setup(400, 400)
pencolor('blue')
pensize(2)
speed(0)


def func(n, r):
    for i in range(n):
        fd(r)
        left(90)
        circle(r, 90)
        left(90)
        fd(r)
        left(90)
        r += 20


func(5, 40)
hideturtle()
done()

 

from turtle import *
from random import random

setup(800, 600)
speed(0)
penup()
goto(-200, 0)
pendown()


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


def rect(width, length):
    for i in range(20):
        rgb = get_color()
        pencolor(rgb)
        fillcolor(rgb)
        begin_fill()
        fd(width)
        left(90)
        fd(length)
        left(90)
        fd(width)
        left(90)
        fd(length)
        left(90)
        end_fill()
        fd(width)


rect(20, 80)
hideturtle()
done()

 

from turtle import *

setup(600, 600)
bgcolor('black')
fillcolor('yellow')
speed(0)

begin_fill()
left(45)
fd(120)
left(90)
circle(120, 270)
left(90)
fd(120)
end_fill()


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


def fill_circle(r, rgb):
    fillcolor(rgb)
    begin_fill()
    left(180)
    circle(r)
    end_fill()


moveto(0, 60)
fill_circle(10, 'black')

moveto(8, 74)
fill_circle(4, 'white')


hideturtle()
done()