尝试使用分支为生长和收缩的细丝设置动画
尝试使用分支为生长和收缩的细丝设置动画
提问于 2019-04-30 07:50:05
基本上，母丝从空间中的初始点开始增长和收缩。当它达到阈值长度时(在我提供的代码中，它对应于坐标= (X = 8，X =8))。此时，分支开始从(8,8)开始增长。分支的增长和收缩与父分支类似，不同之处在于它的起点是(8,8)，而父分支的起点是(1,1)。(虽然我从(1,1)开始分支，但这只是为了让动画的列表长度相等)。
更大的问题是，我的代码中有几个这样的父细丝以不同的角度生长，当它们中的每一个都超过阈值长度时，分支以随机的角度出现。此外，如果父对象收缩回小于阈值的长度，则分支将消失(或者以一种简单的方式，分支的坐标与父对象的坐标相同。)
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
X = [1,2,3,4,5,6,7,8,9,10,11,12,11,10,11,12,13,14,15,14,13,12,13] #parent x coord
Y = [1,2,3,4,5,6,7,8,9,10,11,12,11,10,11,12,13,14,15,14,13,12,13] #parent y coord
X1 = [1,2,3,4,5,6,7,8,7,6,5,4,4,4,5,6,7,8,7,6,5,4,3] #branch x coord
Y1 = [1,2,3,4,5,6,7,8,9,10,11,12,12,12,11,10,9,8,9,10,11,12,13] #branch y coord
fig, ax = plt.subplots(1,1)
ax.set_xlim([0, 20])
ax.set_ylim([-1.1, 20])
graph1, = ax.plot([], [], color = 'green')
graph2, = ax.plot([], [], color = 'green')
dot1, = ax.plot([], [], 'o', color='red', markersize = 5)
dot2, = ax.plot([], [], 'o', color='green', markersize = 5)
def oj(i):
graph1.set_data([X[0],X[i]],[Y[0],Y[i]]) ## for the parent this works as I want it grow and shrink without any trace
graph2.set_data(X1[:i+1],Y1[:i+1]) # for the branch I can't use the same code as that for graph1 as I want it to be attached at (8,8) and grow from or shrink to that poin
dot1.set_data(X[i],Y[i]) # this shows how the tip of the parent filament animates
dot2.set_data(X1[i],Y1[i]) #this shows the tip of the branch which I face a difficulty in animating as it traces back instead of showing a shrink
anim = animation.FuncAnimation(fig, oj, frames=len(X), interval=1000, repeat = False)
plt.show()回答 1
Stack Overflow用户
发布于 2019-04-30 20:44:02
实际上，我将保留您对主分支使用的相同策略，但引入一个参数来指示分支应该在哪个步骤发生并从那里开始工作：
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
X = [1,2,3,4,5,6,7,8,9,10,11,12,11,10,11,12,13,14,15,14,13,12,13] #parent x coord
Y = [1,2,3,4,5,6,7,8,9,10,11,12,11,10,11,12,13,14,15,14,13,12,13] #parent y coord
X1 = [7,6,5,4,4,4,5,6,7,8,7,6,5,4,3] #branch x coord
Y1 = [9,10,11,12,12,12,11,10,9,8,9,10,11,12,13] #branch y coord
fig, ax = plt.subplots(1,1)
ax.set_xlim([0, 20])
ax.set_ylim([-1.1, 20])
graph1, = ax.plot([], [], color = 'green')
graph2, = ax.plot([], [], color = 'green')
dot1, = ax.plot([], [], 'o', color='red', markersize = 5)
dot2, = ax.plot([], [], 'o', color='green', markersize = 5)
ttl = ax.set_title('')
def oj(i, branch_point):
ttl.set_text('i={:d}'.format(i))
graph1.set_data([X[0],X[i]],[Y[0],Y[i]]) ## for the parent this works as I want it grow and shrink without any trace
dot1.set_data(X[i],Y[i]) # this shows how the tip of the parent filament animates
if i>branch_point:
graph2.set_data([X[branch_point],X1[i-branch_point-1]],[Y[branch_point],Y1[i-branch_point-1]]) # for the branch I can't use the same code as that for graph1 as I want it to be attached at (8,8) and grow from or shrink to that poin
dot2.set_data(X1[i-branch_point-1],Y1[i-branch_point-1]) #this shows the tip of the branch which I face a difficulty in animating as it traces back instead of showing a shrink
anim = animation.FuncAnimation(fig, oj, frames=len(X), interval=1000, repeat=False, fargs=(7,))
plt.show()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55912164
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