我的动画速度较慢,因为更新功能会不断计算矩阵,而矩阵仅在我移动滑块时才会更改:
def evolve(psi0, height, width):
global psi
potential = potentialBarrier(height, width)
tM = timeMatrix(hamiltonian(potential))
psi = tM.dot(psi0)
presenceProbability = abs(psi) ** 2
norm = sum(presenceProbability)
presenceProbability /= norm
psi /= norm ** 0.5
return presenceProbability
def update(frame):
line.set_ydata(evolve(psi, potentialSlider.val*10, widthSlider.val))
line2.set_ydata(potentialBarrier(potentialSlider.val, widthSlider.val))
return
wavePacketAnimation = animation.FuncAnimation(fig, update, interval=5, blit=False)
当我移动滑块值时,如何使更新函数仅计算矩阵的新结果,,而当我不移动滑块时,如何使用以前的结果
我试图定义我的矩阵全局,但没有成功。到目前为止我已经知道了
sliderHasChanged = True
tM = timeMatrix(hamiltonian(potentialBarrierInit))
def evolve(psi0, height, width):
global tM
global sliderHasChanged
if sliderHasChanged:
potential = potentialBarrier(height * 10, width)
tM = timeMatrix(hamiltonian(potential))
sliderHasChanged = False
global psi
psi = tM.dot(psi0)
presenceProbability = abs(psi) ** 2
norm = sum(presenceProbability)
presenceProbability /= norm
psi /= norm ** 0.5
return presenceProbability
potentialSlider_ax = fig.add_axes([0.25, 0.15, 0.65, 0.03])
potentialSlider = Slider(potentialSlider_ax, '$V_0$', 0, 1, valinit=0.1)
potentialSlider.label.set_size(15)
widthSlider_ax = fig.add_axes([0.25, 0.1, 0.65, 0.03])
widthSlider = Slider(widthSlider_ax, '$a$', 0, 20, valinit=10.0)
widthSlider.label.set_size(15)
def sliderChange():
global sliderHasChanged
sliderHasChanged = True
return
potentialSlider.on_changed(sliderChange())
widthSlider.on_changed(sliderChange())
def update(frame):
line.set_ydata(evolve(psi, potentialSlider.val, widthSlider.val))
line2.set_ydata(potentialBarrier(potentialSlider.val, widthSlider.val))
return
wavePacketAnimation = animation.FuncAnimation(fig, update, interval=5, blit=False)
wavePacketAnimation.running = True
动画使用初始矩阵值运行良好,但滑块中的更改不会影响动画
目前没有回答
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