原标题：使用Python画一朵美丽的玫瑰花

turtle 是 python 中一个强大的绘制图像的库，可以用来绘制各种图像，使用起来很方便。看看本文使用Python的turtle库画一朵美丽的玫瑰花，下面奉上源码。

但是需要计算各种角度、距离等，所以要想完成一幅复杂的图像还是有一定的难度的。

效果图

源码一

from turtle import *

import time

setup(600,800,0,0)

speed(0)

penup()

seth(90)

fd(340)

seth(0)

pendown()

speed(5)

begin_fill()

fillcolor('red')

circle(50,30)

for i in range(10):

fd(1)

left(10)

circle(40,40)

for i in range(6):

fd(1)

left(3)

circle(80,40)

for i in range(20):

fd(0.5)

left(5)

circle(80,45)

for i in range(10):

fd(2)

left(1)

circle(80,25)

for i in range(20):

fd(1)

left(4)

circle(50,50)

time.sleep(0.1)

circle(120,55)

speed(0)

seth(-90)

fd(70)

right(150)

fd(20)

left(140)

circle(140,90)

left(30)

circle(160,100)

left(130)

fd(25)

penup()

right(150)

circle(40,80)

pendown()

left(115)

fd(60)

penup()

left(180)

fd(60)

pendown()

end_fill()

right(120)

circle(-50,50)

circle(-20,90)

speed(1)

fd(75)

speed(0)

circle(90,110)

penup()

left(162)

fd(185)

left(170)

pendown()

circle(200,10)

circle(100,40)

circle(-52,115)

left(20)

circle(100,20)

circle(300,20)

speed(1)

fd(250)

penup()

speed(0)

left(180)

fd(250)

circle(-300,7)

right(80)

circle(200,5)

pendown()

left(60)

begin_fill()

fillcolor('green')

circle(-80,100)

right(90)

fd(10)

left(20)

circle(-63,127)

end_fill()

penup()

left(50)

fd(20)

left(180)

pendown()

circle(200,25)

penup()

right(150)

fd(180)

right(40)

pendown()

begin_fill()

fillcolor('green')

circle(-100,80)

right(150)

fd(10)

left(60)

circle(-80,98)

end_fill()

penup()

left(60)

fd(13)

left(180)

pendown()

speed(1)

circle(-200,23)

exitonclick()

源码二

import turtle

import math

def p_line(t, n, length, angle):

"""Draws n line segments."""

for i in range(n):

t.fd(length)

t.lt(angle)

def polygon(t, n, length):

"""Draws a polygon with n sides."""

angle = 360 / n

p_line(t, n, length, angle)

def arc(t, r, angle):

"""Draws an arc with the given radius and angle."""

arc_length = 2 * math.pi * r * abs(angle) / 360

n = int(arc_length / 4) + 1

step_length = arc_length / n

step_angle = float(angle) / n

# Before starting reduces, making a slight left turn.

t.lt(step_angle / 2)

p_line(t, n, step_length, step_angle)

t.rt(step_angle / 2)

def petal(t, r, angle):

"""Draws a 花瓣 using two arcs."""

for i in range(2):

arc(t, r, angle)

t.lt(180 - angle)

def flower(t, n, r, angle, p):

"""Draws a flower with n petals."""

for i in range(n):

petal(t, r, angle)

t.lt(p / n)

def leaf(t, r, angle, p):

"""Draws a 叶子 and fill it."""

t.begin_fill() # Begin the fill process.

t.down()

flower(t, 1, r, angle, p)

t.end_fill()

def main():

window = turtle.Screen() # creat a screen

window.bgcolor("white")

window.title("draw a flower")

lucy = turtle.Turtle()

lucy.shape("turtle")

lucy.color("red")

lucy.width(3)

# lucy.speed(10)

# Drawing flower

flower(lucy, 7, 60, 100, 360)

# Drawing pedicel

lucy.color("brown")

lucy.rt(90)

lucy.fd(200)

# Drawing leaf 1

lucy.width(1)

lucy.rt(270)

lucy.color("green")

leaf(lucy, 40, 80, 180)

lucy.rt(140)

lucy.color("black")

lucy.fd(30)

lucy.lt(180)

lucy.fd(30)

# Drawing leaf 2

lucy.rt(120)

lucy.color("green")

leaf(lucy, 40, 80, 180)

lucy.color("black")

lucy.rt(140)

lucy.fd(30)

lucy.ht() # hideturtle

window.exitonclick()

main()

更多Python相关信息见Python 专题页面 https://www.linuxidc.com/topicnews.aspx?tid=17

Linux公社的RSS地址：https://www.linuxidc.com/rssFeed.aspx

本文永久更新链接地址：https://www.linuxidc.com/Linux/2019-02/157156.htm返回搜狐，查看更多

责任编辑：