Python实现绘制3D地球旋转效果

import numpy as np
import matplotlib.pyplot as plt
path = "earth1.jpg"
img = plt.imread(path)
h, w, c = img.shape
ys, xs = np.indices([h, w])
th = xs/w*np.pi*2
phi = np.pi/2 - ys/h*np.pi

x = np.cos(phi)*np.cos(th)
y = np.cos(phi)*np.sin(th)
z = np.sin(phi)

cs = [tuple(c/255) for c in img.reshape(-1,3)]
ax = plt.subplot(projection='3D')
ax.scatter(x, y, z, marker='.', c=cs)
plt.axis('off')
plt.show()

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

cos = lambda th : np.cos(np.deg2rad(th))
sin = lambda th : np.sin(np.deg2rad(th))

Rz = lambda th : np.array([
    [cos(th) , -sin(th), 0],
    [sin(th), cos(th), 0],
    [0       , 0,       1]])

xyz = np.array([x,y,z]).reshape(3,-1)

fig = plt.figure(figsize=(5,5))
ax = fig.add_subplot(projection='3d')
ax.grid()

lines = ax.scatter(x, y, z, marker='.', c=cs)

def animate(n):
    # 按照xyz顺序旋转
    axis = [2,1,0]
    shape = xyz.shape
    lines._offsets3d = Rz(n)@xyz
    return lines,

ani = animation.FuncAnimation(fig, animate, 
    range(0, 360, 2), interval=25, blit=True)

#plt.show()
ani.save("zyx.gif")