# 展示

.
.

?小白练手专栏，适合刚入手的新人欢迎订阅编程小白进阶

?python有趣练手项目里面包括了像《机器人尬聊》《恶搞程序》这样的有趣文章，可以让你快乐学python练手项目专栏

?另外想学JavaWeb进厂的同学可以看看这个专栏：传送们

?这是个面试和考研的算法练习我们一起加油上岸之路

# 源码和详解

## 荷花

``````def lotus():
fig = plt.figure(figsize=(10,7),facecolor='black',clear=True)
ax = fig.gca(projection='3d')
[x, t] = np.meshgrid(np.array(range(25))/24.0, np.arange(0, 575.5, 0.5)/575 * 17 * np.pi-2*np.pi)
p = (np.pi/2)*np.exp(-t/(8*np.pi))
u = 1-(1-np.mod(3.6*t, 2*np.pi)/np.pi)**4/2
y = 2*(x**2-x)**2*np.sin(p)
r = u*(x*np.sin(p)+y*np.cos(p))
surf = ax.plot_surface(r*np.cos(t), r*np.sin(t), u*(x*np.cos(p)-y*np.sin(p)), rstride=1, cstride=1, cmap=cm.gist_rainbow_r,
linewidth=0, antialiased=True)

``````

## 玫瑰花

``````def rose_flower():
fig = plt.figure(figsize=(10,7),facecolor='black',clear=True)
ax = fig.gca(projection='3d')
# 将相位向后移动了6*pi
[x, t] = np.meshgrid(np.array(range(25)) / 24.0, np.arange(0, 575.5, 0.5) / 575 * 20 * np.pi + 4*np.pi)
p = (np.pi / 2) * np.exp(-t / (8 * np.pi))
# 添加边缘扰动
change = np.sin(15*t)/150
# 将t的参数减少，使花瓣的角度变大
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))
h = u * (x * np.cos(p) - y * np.sin(p))
c= cm.get_cmap('Reds')
surf = ax.plot_surface(r * np.cos(t), r * np.sin(t), h, rstride=1, cstride=1,
cmap= c, linewidth=0, antialiased=True)

``````

## 桃花

``````
def peach_blossom():
fig = plt.figure(figsize=(10,7),facecolor='black',clear=True)
ax = fig.gca(projection='3d')
[x, t] = np.meshgrid(np.array(range(25)) / 24.0, np.arange(0, 575.5, 0.5) / 575 * 6 * np.pi - 4*np.pi)
p = (np.pi / 2) * np.exp(-t / (8 * np.pi))
change = np.sin(10*t)/20
u = 1 - (1 - np.mod(5.2 * 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= cm.get_cmap('spring_r')
surf = ax.plot_surface(r * np.cos(t), r * np.sin(t), h, rstride=1, cstride=1,
cmap= c, linewidth=0, antialiased=True)

``````

## 月季

``````def monthly_rose():
fig = plt.figure(figsize=(10,7),facecolor='black',clear=True)
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 = cm.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)

``````

THE END