求問怎樣用python/python turtle畫「心」呢？

01-23

剛剛起步python，覺得python turtle真是萌神一般的存在呀～試著畫了顆「心」，不過覺得方法實在是太笨了&> &< 想求問各位老小夥伴，還有什麼方法可以python／python turtle畫「心」呢？

from turtle import * def curvemove(): for i in range(200): right(1) forward(1) color("red","pink") begin_fill() left(140) forward(111.65) curvemove() left(120) curvemove() forward(111.65) end_fill() done()

How can I draw a heart using Python?

2333自學Python一周，剛寫好的。歡迎交流，分享

#heart


from turtle import *

from time import sleep
def go_to(x, y):

   up()

   goto(x, y)

   down()
def big_Circle(size):  #函數用於繪製心的大圓

   speed(10)

   for i in range(150):

       forward(size)

       right(0.3)
def small_Circle(size):  #函數用於繪製心的小圓

   speed(10)

   for i in range(210):

       forward(size)

       right(0.786)
def line(size):

   speed(1)

   forward(51*size)
def heart( x, y, size):

   go_to(x, y)

   left(150)

   begin_fill()

   line(size)

   big_Circle(size)

   small_Circle(size)

   left(120)

   small_Circle(size)

   big_Circle(size)

   line(size)

   end_fill()
def arrow():

   pensize(10)

   setheading(0)

   go_to(-400, 0)

   left(15)

   forward(150)

   go_to(339, 178)

   forward(150)
def arrowHead():

   pensize(1)

   speed(5)

   color("red", "red")

   begin_fill()

   left(120)

   forward(20)

   right(150)

   forward(35)

   right(120)

   forward(35)

   right(150)

   forward(20)

   end_fill()
def main():

   pensize(2)

   color("red", "pink")

   #getscreen().tracer(30, 0) #取消注釋後，快速顯示圖案

   heart(200, 0, 1)          #畫出第一顆心，前面兩個參數控制心的位置，函數最後一個參數可控制心的大小

   setheading(0)             #使畫筆的方向朝向x軸正方向

   heart(-80, -100, 1.5)     #畫出第二顆心

   arrow()                   #畫出穿過兩顆心的直線

   arrowHead()               #畫出箭的箭頭

   go_to(400, -300)

   write("author：寶寶可乖了", move=True, align="left", font=("宋體", 30, "normal"))

   done()

main()

from turtle import *

pensize(1)

color("black","red")

speed(2)

up()

goto(-12,100)

down()

begin_fill()

left(90)

circle(120,180)

circle(360,70.529)

left(38.942)

circle(360,70.529)

circle(120,180)

end_fill()

up()

goto(-250,-150)

down()

一行代碼:

print" ".join(["".join([("YourLove"[(x-y)%8]if((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3&<=0 else" ")for x in range(-30,30)])for y in range(15,-15,-1)])

用python matplotlib畫笛卡爾的心形線

import numpy as np

import pylab as plt

from matplotlib import colors

a = [[] for i in range(1000)]

i = 0

while i &< 1000:

j = 0

while j &< 1000:

x = -1.8 + 0.003*i

y = -1.4 + 0.0028*j

z = y**2 + (-x - (y**2)**0.33333)**2

if z &<= 1:

a[i].append(0.9)

else:

a[i].append(0.0)

j = j + 1

i = i + 1

cmap = colors.ListedColormap(["white", "pink"])

im = plt.imshow(a, cmap = cmap, interpolation="bicubic" )

plt.show()

大家自己畫吧~

import turtle


turtle.hideturtle()

canvas = turtle.getcanvas()

drawing = False

color = "red"

bgcolor = "white"

canvas.config(background = bgcolor)
last_point = (-1, -1)
def draw_point(event):

    global last_point
    x = canvas.canvasx(event.x)

    y = canvas.canvasy(event.y)

    canvas.create_rectangle(x, y, x, y, fill = color)

    last_point = (x, y)
def draw_line(event):

    global drawing, last_point

    if(drawing):

        return

    drawing = True

    x = canvas.canvasx(event.x)

    y = canvas.canvasy(event.y)

    canvas.create_line(last_point[0], last_point[1], x, y, fill = color)

    last_point = (x, y)

    drawing = False

def stop_drawing(event):

    global last_point

    last_point = (-1, -1)

canvas.bind("&", draw_point)

canvas.bind("&", draw_line)

canvas.bind("&", stop_drawing)

turtle.mainloop()

import sys import math


def frange(start, end, step=1.0):

	if step &> 0:

		while start &< end:
			yield start 
			start += step
	elif step &< 0:
		while start &> end:

			yield start

			start += step

	else:

		raise ValueError("range() step must not be zero")
def f(x, y, z):

	a = x*x + 9.0/4*y*y + z*z - 1

	return a*a*a - x*x*z*z*z - 9.0/80*y*y*z*z*z

def h(x, z): for y in frange(1.0, 0.0, -0.001): if f(x, y, z) &<= 0: return y return 0.0 if __name__ == "__main__": for z in frange(1.5, -1.5, -0.1): for x in frange(-1.5, 1.5, 0.05): v = f(x, 0, z) if v &<= 0: y0 = h(x, z) ny = 0.01 nx = h(x + ny, z) - y0 nz = h(x, z + ny) - y0 nd = 1.0/math.sqrt(nx*nx+ny*ny+nz*nz) d = (nx + ny - nz)*nd*0.5 + 0.5 sys.stdout.write(".:-=+*#%@"[int(d*5)]) else: sys.stdout.write(" ") sys.stdout.write(" ")

-------------------------------------------------------------------------------------------------

import sys


def frange(start, end, step=1.0):

	if step &> 0:

		while start &< end:
			yield start 
			start += step
	elif step &< 0:
		while start &> end:

			yield start

			start += step

	else:

		raise ValueError("frange() step must not be zero")

if __name__ == "__main__": for y in frange(1.5, -1.5, -0.1): for x in frange(-1.5, 1.5, 0.05): z = x*x + y*y - 1 f = z*z*z - x*x*y*y*y if f &<= 0: sys.stdout.write("*") else: sys.stdout.write(" ") sys.stdout.write(" ")

就醬

Python 3.x 畫心程序情人節拿去不謝

1、打開Python 3.5 Shell。

2、選擇左上角的「File」、點擊「New File」

3、在白板中粘貼以下代碼

import matplotlib.pyplot as plt import numpy as np t = np.arange(0,2*np.pi, 0.1) x = 16*np.sin(t)**3 y = 13*np.cos(t)-5*np.cos(2*t)-2*np.cos(3*t)-np.cos(4*t) plt.plot(x,y,color = "red") plt.show()

4、選擇「File」、點擊「Save」，命名為「dannysgift.py」,保存

5、選擇「Run」，點擊「Run Module」

6、顯示結果

1.用CAD或者GeoGebra建模，取數據。

2.from turtle import Turtle

代碼如下：

from turtle import Turtle from math import *


def draw_heart(radius1,extent,deg_set1):

    for i in range(4):

	    if radius1[i]&>0:

	        radius1[i] = sqrt(radius1[i])

	    else:

	        radius1[i] = -sqrt(-radius1[i])

	    p.setheading(deg_set1[i])

	    p.circle(radius1[i]*40,extent[i])
if __name__ == "__main__":

    radius1 =[139.53,4366.02,-10.8,-11.2]

    extent = [17.61,3.43,77.93,157.63]

    deg_set1 = [124.24,142.06,140.09,68.19]
    radius2 =[-139.53,-4366.02,10.8,11.2]

    deg_set2 = [55.76,37.94,39.91,111.81]
    p = Turtle()

    p.penup()

    p.goto(0,-200)

    p.pendown()

    p.color("red")

    p.pensize(2)

    p.speed(10)

draw_heart(radius1,extent,deg_set1) p.penup() p.goto(0,-200) p.pendown() draw_heart(radius2,extent,deg_set2) p.hideturtle()

自學兩天，正好學用turtle畫畫，腦洞一開就想要畫心，畫了很多次都是首尾不接的狀態，而且內部的取值是根據固定大小，嘗試著拼湊出來的參數。

看了下知乎和百度上的其他答案，是比較高級的畫法，暫時還沒學，就用簡單的畫法了。

花了半天時間研究和修改，完成了自己的執念（一定要首尾相接），並且可以自由設置心的大小，都能由程序自動放大縮小而不改變形狀。

和題主分享一下：

代碼：

import turtle

import math

def drawHeart(rad):

turtle.circle(rad, 225)

turtle.fd(rad*math.tan(math.pi/8*3))

turtle.circle(0, 90)

turtle.fd(rad*math.tan(math.pi/8*3))

turtle.circle(rad, 225)

def main():

turtle.setup(500, 500, 0, 0)

turtle.seth(90)

pythonsize = 30

turtle.pensize(pythonsize)

turtle.pencolor("red")

drawHeart(40)

main()

希望能夠有所幫助。願向大家學習，共同進步！

畫出來的丑,略有其形

import turtle

turtle.fillcolor("pink")

turtle.begin_fill()

turtle.left(90)

turtle.circle(50,180)

turtle.left(180)

turtle.circle(50,180)

turtle.left(45)

turtle.forward(100*2**0.5)

turtle.left (90)

turtle.forward(100*2**0.5)

turtle.end_fill ()

我東拼西湊也做一個，體驗一下。

# -*- coding: utf-8 -*-


# file:plot.py
# matplotlib 繪圖演示

# 參考資料：http://blog.csdn.net/jenyzhang/article/details/52046372

# 心形線：http://www.sohu.com/a/54786554_372453
import numpy as np

import matplotlib.pyplot as plt

import math
# 設置X,Y軸的數值

# 一種心形線的表達方式

# x = 16*(sin(t))**3

# y = 13*cos(t)-5*cos(2*t)-2*cos(3*t)-cos(4*t)
t=np.linspace(0,2*math.pi,3000)

x=16*(np.sin(t))**3

y=13*np.cos(t)-5*np.cos(2*t)-2*np.cos(3*t)-np.cos(4*t)
# 創建繪圖對象

plt.figure(figsize=(8,8))
# 在當前繪圖對象進行繪圖（兩個參數是x,y軸的數據）

plt.plot(x,y,color="red",linew=2)
# 關閉坐標軸（也沒有四邊外框，僅有圖像）

plt.axis("off")
# 關閉坐標刻度（但還有四條邊框）

#plt.xticks([])

#plt.yticks([])
# 填充紅色

plt.fill(x,y,"red")
# 提示：要先保存，再顯示。順序反了，會只得到一張空白圖片

# 保存圖片

# .png文件能實現背景透明

#plt.savefig("plot.png",dpi=300,bbox_inches="tight", transparent=True)

plt.savefig("plot.jpg",dpi=300)

# 顯示圖 plt.show()

PNG背景透明效果的，也做了一個。

from pylab import* t=linspace(0,2*pi,100) x=sin(2*t) + 2*sin(t) y=-cos(2*t)-2*cos(t) fill(x,y,"r") show()