whileループがPythonを実行しているときに変数を変更する方法

Question

私はVPythonと一緒にwx.pythonを使って軌道シミュレータを作っていますが、シミュレーションを行うためにGUIのスライダを取得するのに問題があります。スライダーボタンに関連付けられた番号を実行中にwhileループに入れることを試みているからです。

私の質問は、どのように関数のSetRateをコードの最後にあるwhileループで更新するのですか？

Value = 1.0 
dt = 100.0 

def InputValue(Value): 
    dt = Value 

def SetRate(evt): 
    global Value 
    Value = SpeedOfSimulation.GetValue() 
    return Value 


    w = window(menus=True, title="Planetary Orbits",x=0, y=0, width = 1000, height = 1000) 
    Screen = display(window = w, x = 30, y = 30, width = 700, height = 500) 
    gdisplay(window = w, x = 80, y = 80 , width = 40, height = 20) 

    p = w.panel # Refers to the full region of the window in which to place widgets 

    SpeedOfSimulation = wx.Slider(p, pos=(800,10), size=(200,100), minValue=0, maxValue=1000) 
    SpeedOfSimulation.Bind(wx.EVT_SCROLL, SetRate) 


    TestData = [2, 0, 0, 0, 6371e3, 5.98e24, 0, 0, 0, 384400e3, 0, 0, 1737e3, 7.35e22, 0, 1e3, 0] 
    Nstars = TestData[0] # change this to have more or fewer stars 

    G = 6.7e-11 # Universal gravitational constant 

    # Typical values 
    Msun = 2E30 
    Rsun = 2E9 
    vsun = 0.8*sqrt(G*Msun/Rsun) 

    Stars = [] 
    colors = [color.red, color.green, color.blue, 
       color.yellow, color.cyan, color.magenta] 
    PositionList = [] 
    MomentumList = [] 
    MassList = [] 
    RadiusList = [] 

    for i in range(0,Nstars): 
     s=i*8 
     x = TestData[s+1] 
     y = TestData[s+2] 
     z = TestData[s+3] 
     Radius = TestData[s+4] 
     Stars = Stars+[sphere(pos=(x,y,z), radius=Radius, color=colors[i % 6], 
         make_trail=True, interval=10)] 
     Mass = TestData[s+5] 
     SpeedX = TestData[s+6] 
     SpeedY = TestData[s+7] 
     SpeedZ = TestData[s+8] 
     px = Mass*(SpeedX) 
     py = Mass*(SpeedY) 
     pz = Mass*(SpeedZ) 
     PositionList.append((x,y,z)) 
     MomentumList.append((px,py,pz)) 
     MassList.append(Mass) 
     RadiusList.append(Radius) 

    pos = array(PositionList) 
    Momentum = array(MomentumList) 
    Mass = array(MassList) 
    Mass.shape = (Nstars,1) # Numeric Python: (1 by Nstars) vs. (Nstars by 1) 
    Radii = array(RadiusList) 

    vcm = sum(Momentum)/sum(Mass) # velocity of center of mass 
    Momentum = Momentum-Mass*vcm # make total initial momentum equal zero 


    Nsteps = 0 
    time = clock() 
    Nhits = 0 

    while True: 
     InputValue(Value) #Reprensents the change in time 
     rate(100000) #No more than 100 loops per second on fast computers 

     # Compute all forces on all stars 
     r = pos-pos[:,newaxis] # all pairs of star-to-star vectors (Where r is the Relative Position Vector 
     for n in range(Nstars): 
      r[n,n] = 1e6 # otherwise the self-forces are infinite 
     rmag = sqrt(sum(square(r),-1)) # star-to-star scalar distances 
     hit = less_equal(rmag,Radii+Radii[:,newaxis])-identity(Nstars) 
     hitlist = sort(nonzero(hit.flat)[0]).tolist() # 1,2 encoded as 1*Nstars+2 
     F = G*Mass*Mass[:,newaxis]*r/rmag[:,:,newaxis]**3 # all force pairs 

     for n in range(Nstars): 
      F[n,n] = 0 # no self-forces 
     Momentum = Momentum+sum(F,1)*dt 

     # Having updated all momenta, now update all positions   
     pos = pos+(Momentum/Mass)*dt 

     # Update positions of display objects; add trail 
     for i in range(Nstars): 
      Stars[i].pos = pos[i] 

Answer 1

私はvpythonについて何も知らないが、通常のwxPythonのアプリでは、あなたの代わりにwx.Timerを使用します。ここでは

は、参考のために私のコードです（私は、スライダが値を再同調していることを確認するためにチェックしています） whileのループ。ここ

はあなたのSetRateクラスメソッドからwhileループの一部を分離し、updateに入れたいと思うでしょうhttps://www.blog.pythonlibrary.org/2009/08/25/wxpython-using-wx-timers/

から変更wx.Timerの一例です。

import wx 

class MyForm(wx.Frame): 

    def __init__(self): 
     wx.Frame.__init__(self, None, wx.ID_ANY, "Timer Tutorial 1", 
            size=(500,500)) 

     # Add a panel so it looks the correct on all platforms 
     panel = wx.Panel(self, wx.ID_ANY) 

     self.timer = wx.Timer(self) 
     self.Bind(wx.EVT_TIMER, self.update, self.timer) 

     SpeedOfSimulation = wx.Slider(p, pos=(800,10), size=(200,100), minValue=0, maxValue=1000) 
     SpeedOfSimulation.Bind(wx.EVT_SCROLL, SetRate) 
     self.SpeedOfSimulation = SpeedOfSimulation 

    def update(self, event): 

     # Compute all forces on all stars 

     SpeedOfSimulation = self.SpeedOfSimulation.GetValue()