如何在matplotlib中实现三维曲面中的实体曲面？

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

import numpy as np

# 生成网格点的坐标
x = np.linspace(-5, 5, 100)
y = np.linspace(-5, 5, 100)
X, Y = np.meshgrid(x, y)

# 计算每个坐标点的z值
Z = np.sin(np.sqrt(X**2 + Y**2))

ax.plot_surface(X, Y, Z, cmap='viridis')

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

# 生成网格点的坐标
x = np.linspace(-5, 5, 100)
y = np.linspace(-5, 5, 100)
X, Y = np.meshgrid(x, y)

# 计算每个坐标点的z值
Z = np.sin(np.sqrt(X**2 + Y**2))

# 创建Figure对象和Axes3D对象
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# 绘制曲面
ax.plot_surface(X, Y, Z, cmap='viridis')

# 显示图像
plt.show()