Python 之 爱心和玫瑰花

前言

七夕，程序开始用自己独有的视野表达爱意
Python实现

实例

1. 爱心

A

print("爱心曲线函数：")
print('\n'.join([''.join(
    [('Love'[(x-y) % len('Love')] 
                           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)]))
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展示

B

# 绘制表白爱心的代码
from matplotlib import pyplot as plt
import numpy as np

t = np.linspace(0, 6, 100)
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)
fig = plt.figure(figsize=(5, 3), dpi=100)
plt.scatter(x, y,color="red")
plt.show()
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结果

C

from matplotlib import pyplot as plt
import matplotlib.animation as animation
import numpy as np

t = np.linspace(0, 6, 100)
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)
data = [i for i in zip(x, y)]

def plot_love(data):
    x, y = data
    plt.scatter(x, y, 60, c="r", alpha=0.7, marker=r"$\heartsuit$")

fig = plt.figure(figsize=(5, 3), dpi=100)
plt.axis("off")
animator = animation.FuncAnimation(fig, plot_love, frames=data, interval=80)
animator.save("love.gif", writer='pillow')
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结果

2 玫瑰花

# 利用Python画玫瑰
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure(figsize=(8,8))
ax = fig.gca(projection='3d')
[x, t] = np.meshgrid(np.array(range(25)) / 24.0, np.arange(0, 575.5, 0.5) / 575 * 30 * np.pi - 4*np.pi)
p = (np.pi / 2) * np.exp(-t / (8 * np.pi))
change = np.sin(20*t)/50
u = 1 - (1 - np.mod(3.3 * t, 2 * np.pi) / np.pi) ** 4 / 2 + change
y = 2 * (x ** 2 - x) ** 2 * np.sin(p)
r = u * (x * np.sin(p) + y * np.cos(p)) * 1.5
h = u * (x * np.cos(p) - y * np.sin(p))
c= plt.get_cmap('magma')
surf = ax.plot_surface(r * np.cos(t), r * np.sin(t), h, rstride=1, cstride=1,
                       cmap= c, linewidth=0, antialiased=True)

ax.set_xticks([])
ax.set_yticks([])
ax.set_zticks([])

from matplotlib.font_manager import FontProperties
font_set = FontProperties(size=20)
plt.title('Happy Festival', fontproperties=font_set,color="red")
plt.show()
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结果