【Python】Python海龟绘图秀场

粉色五角星

import turtle


def drawFivePointStar(t, x, y, lengthOfSide):
    # 从(x, y)向东南方向出发
    t.up()
    t.goto(x, y)
    t.left(36)
    t.down()
    for i in range(5):
        t.forward(lengthOfSide)
        # 144 = 180 - 36
        t.left(144)


myTurtle = turtle.Turtle()
myTurtle.hideturtle()
myTurtle.color("deeppink")
myWindow = myTurtle.getscreen()
lengthOfSide = 200
drawFivePointStar(myTurtle, 0, 0, lengthOfSide)
myWindow.exitonclick()

连续五个随机颜色五角星

from turtle import *
from random import randint


def drawStar(x, y):
    pu()
    goto(x, y)
    pd()
    colormode(255)
    # set heading: 0
    seth(0)
    for i in range(5):
        r = randint(0, 255)
        g = randint(0, 255)
        b = randint(0, 255)
        pencolor(r, g, b) 
        fd(40)
        rt(144)


hideturtle()
for x in range(0, 250, 50):
    drawStar(x, 0)
done()

红色玩具车

import turtle

t = turtle.Pen()
t.color(1,0,0)
t.begin_fill()
t.forward(100)
t.left(90)
t.forward(20)
t.left(90)
t.forward(20)
t.right(90)
t.forward(20)
t.left(90)
t.forward(60)
t.left(90)
t.forward(20)
t.right(90)
t.forward(20)
t.left(90)
t.forward(20)
t.end_fill()

t.color(0,0,0)
t.up()
t.forward(10)
t.down()
t.begin_fill()
t.circle(10)
t.end_fill()

t.setheading(0)
t.up()
t.forward(90)
t.right(90)
t.forward(10)
t.setheading(0)
t.begin_fill()
t.down()
t.circle(10)
t.end_fill()
t.hideturtle()

高度旋转堆叠的正方形组

import turtle

for i in range(360):
    turtle.setheading(i)
    for i in range(4):
        turtle.forward(100)
        turtle.left(90)

K阶科赫雪花

import turtle


def koch(len, n):
    if n == 0:
        turtle.fd(len)
    else:
        for i in [0, 60, -120, 60]:
            turtle.left(i)
            koch(len/3, n-1)


level = int(input())

turtle.penup()
turtle.goto(-250, 150)
turtle.pensize(2)
turtle.color('orange')
turtle.pendown()
koch(500, level)
turtle.right(120)
koch(500, level)
turtle.right(120)
koch(500, level)
turtle.right(120)
turtle.hideturtle()
turtle.done()

三阶科赫雪花：

五阶科赫雪花：

斜分绿树

from turtle import *


# 递归绘制一棵树
def tree(branchLength, turtle):
    if branchLength > 5:
        turtle.forward(branchLength)
        turtle.right(20)
        tree(branchLength-15, turtle)
        turtle.left(40)
        tree(branchLength-10, turtle)
        turtle.right(20)
        turtle.backward(branchLength)


myTurtle = Turtle()
myWindow = myTurtle.getscreen()
myTurtle.hideturtle()
myTurtle.left(90)
myTurtle.up()
myTurtle.backward(300)
myTurtle.down()
myTurtle.color('green')
tree(110, myTurtle)

分形树

from turtle import *

# 设置色彩模式是RGB:
colormode(255)

lt(90)

lv = 14
l = 120
s = 45

width(lv)

# 初始化RGB颜色:
r = 0
g = 0
b = 0
pencolor(r, g, b)

penup()
bk(l)
pendown()
fd(l)

def draw_tree(l, level):
    global r, g, b
    # save the current pen width
    w = width()

    # narrow the pen width
    width(w * 3.0 / 4.0)
    # set color:
    r = r + 1
    g = g + 2
    b = b + 3
    pencolor(r % 200, g % 200, b % 200)

    l = 3.0 / 4.0 * l

    lt(s)
    fd(l)

    if level