实验6 turtle绘图与python库应用编程体验

任务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()

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()

任务2

from turtle import*
def moveto(x,y):
    penup()
    goto(x,y)
    pendown()
def main():
    setup(800,600)
    radius=20
    offset=20
    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
    offset=20
    for i in range(8):
        moveto(0,-radius)
        color(gen_color())
        begin_fill()
        circle(radius)
        end_fill()
        radius-=offset
    hideturtle()
    done()
main()

任务3

from turtle import*
def squre(size=50,rgb='pink'):
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)
def main():
    setup(800,600)
    speed(0)
    n=9
    for i in range(n):
        squre(80)
        left(360/n)
    hideturtle()
    done()
main()

from turtle import*
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()

任务4

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

任务5

from turtle import*
goto(-100,-100)
color('black','black')
begin_fill()
for i in range(4):
    fd(200)
    left(90)
end_fill()
goto(-100,0)
right(90)
color('red','red')
begin_fill()
circle(100,steps=4)
end_fill()
hideturtle()
done()

from turtle import*
r=40
pencolor('blue')
pensize(2)
for i in range(5):
    fd(r)
    left(90)
    circle(r,90)
    left(180)
    r+=20
    goto(0,0)
hideturtle()
done()

任务6

from turtle import*
from random import random
setup(800,600)
def gen_color():
    return tuple((random()for i in range(3)))
for i in range(20):
    fillcolor(gen_color())
    begin_fill()
    fd(20)
    left(90)
    fd(60)
    left(90)
    fd(20)
    left(90)
    fd(60)
    left(90)
    fd(20)
    end_fill()
hideturtle()
done()