有人可以告诉我我的动画代码怎么了吗?

时间:2020-05-17 17:15:20

标签: python matplotlib animation python-imaging-library animated-gif

有人可以告诉我我的动画代码怎么了吗?

我编写了此程序,该程序将生成40个png图像和一个动画gif图像。

该动画应该是切成5个片段的球体,并且这些段向左和向右移动,但是,正如您将看到的那样,它实际上并没有按照我的计划工作

(我只张贴了12帧gif,因为40帧会很大发布)

有人可以告诉我如何纠正它吗?

import matplotlib.pyplot as plt
from numpy import sin,cos,pi,outer,ones,size,linspace
from mpl_toolkits.mplot3d import axes3d

# Define the x, y, and z lists for the sphere:
x = 10*outer(cos(linspace(0, 2*pi)), sin(linspace(0, pi)))
y = 10*outer(sin(linspace(0, 2*pi)), sin(linspace(0, pi)))
z = 10*outer(ones(size(linspace(0, 2*pi))), cos(linspace(0, pi)))

for n in range(40):
    fig = plt.figure(figsize=(10, 10))
    ax = fig.add_subplot(111, projection='3d')
    ax.plot_surface(x, y, z, color = ('r'))
    ax.set_xticks([])
    ax.set_yticks([])
    ax.set_zticks([])
    ax.set_xlim(-10,10)
    ax.set_ylim(-10,10)
    ax.set_zlim(-10,10)
    plt.savefig(str(n)+'.png') #Save the image into a numbered png file
    print(str(n)+'.png completed.')
    plt.close()

    sign = 1
    for count in range(5): #Slice the sphere into 5 segments
        for num in range(len(z)//5*count,len(z)//5*(count+1)):
            z[num] += sign # Make the segments go positive and negative directions
            sign *= -1

from PIL import Image
images = []
# Open each png file and store in images list
for n in range(40):
    exec('a'+str(n)+'=Image.open("'+str(n)+'.png")')
    images.append(eval('a'+str(n)))
# Create an animated gif file:
images[0].save('ball.gif',
               save_all=True,
               append_images=images[1:],
               duration=100,
               loop=0)

Part of the resulting animation

1 个答案:

答案 0 :(得分:2)

问题是所有段都使用相同的数组,因此该图将在某些顶点保持连接。只是绘图功能是如何工作的,它不知道您要分离零件。

您必须先split个数组,然后分别修改这些部分。

充其量也可以对xy进行此操作,因此您不必摆弄索引和烦人的内部for循环:)

我为您准备了一些内容:

import matplotlib.pyplot as plt
from numpy import sin,cos,pi,outer,ones,size,linspace
from mpl_toolkits.mplot3d import axes3d
import numpy as np

# Define the x, y, and z lists for the sphere:
x = 10*outer(cos(linspace(0, 2*pi)), sin(linspace(0, pi)))
y = 10*outer(sin(linspace(0, 2*pi)), sin(linspace(0, pi)))

z = 10*outer(ones(size(linspace(0, 2*pi))), cos(linspace(0, pi)))

def split_and_array(a):
    return np.array(np.split(a, 5, axis=0))

x = split_and_array(x)
y = split_and_array(y)
z = split_and_array(z)

for n in range(40):
    fig = plt.figure(figsize=(10, 10))
    ax = fig.add_subplot(111, projection='3d')

    for k in range(5):
        ax.plot_surface(x[k], y[k], z[k], color = ('r'))

    ax.set_xticks([])
    ax.set_yticks([])
    ax.set_zticks([])
    ax.set_xlim(-10,10)
    ax.set_ylim(-10,10)
    ax.set_zlim(-10,10)
    plt.savefig(str(n)+'.png') #Save the image into a numbered png file
    print(str(n)+'.png completed.')
    plt.close()

    sign = 1
    for count in range(5): #Slice the sphere into 5 segments

        z[count] += sign # Make the segments go positive and negative directions
        sign *= -1