在xy平面上旋轉點時重疊的繪圖點

Question

標記點（註釋稱爲「標記點」）的點是將3D繪圖中的現有點旋轉一個點。基本上我將所有點移動60度。出於某種原因，當移動點時，我有兩點重疊。我試圖改變我的陳述，並且混淆了他的指數，但並未成功。我包括整個功能的唯一原因是，您可以繪製並查看我遇到的問題。這裏是;讓我知道如果您有任何疑問：

def transform_3d_trig(a,b,c): 
     q=2*math.pi/(360) 
     d=c*q 
     a2 = a+b 
     n = 12 

     sin=math.sin 
     cos=math.cos 
     sqrt=math.sqrt 
     x = [] 
     y = [] 
     z = [] 

     for i in range(n): 
      if i <= 5: 
       x.append(a*np.cos(q*(60*(i-1)))) 
       y.append(a*np.sin(q*(60*(i-1)))) 
       z.append(0) 
      else: 
       x.append(a2*np.cos(q*(60*(i-1)))) 
       y.append(a2*np.sin(q*(60*(i-1)))) 
       z.append(0) 

     x_new = x #new lists 
     y_new = y 
     z_new = z 
     for i in range(n): 
      y_new[i] = y[i]*cos(d) 
      z_new[i] = y_new[i]*np.tan(d) 

     # plot points at this stage (before rotation); no overlapping points 
     fig = plt.figure(figsize=(12,12)) 
     ax3 = fig.add_subplot(211, projection='3d') 
     bond2 = [x_new[4],x_new[10],y_new[4],y_new[10],z_new[4],z_new[10]] 
     ax3.plot(bond2[:2],bond2[2:4],bond2[4:6], color='r') 
     ax3.scatter(x_new, y_new, z_new) 
     ax3.set_xlabel('\nX') 
     ax3.set_ylabel('\nY') 
     ax3.set_zlabel('\nZ') 

     x_dummy = x_new #dummy variables to not screw up list 
     y_dummy = y_new 
     for i in range(n): #marked spot 
      if (i == 5 or i == 11): 
       x_new[i] = x_dummy[i-5] 
       y_new[i] = y_dummy[i-5] 
      else: 
       x_new[i] = x_dummy[i+1] 
       y_new[i] = y_dummy[i+1] 

      print(x_new[i], y_new[i]) #to track what point are overlapping 

     # plot points at this stage (after rotation); overlapping points 
     ax3 = fig.add_subplot(212, projection='3d') 
     bond2 = [x_new[4],x_new[10],y_new[4],y_new[10],z_new[4],z_new[10]] 
     ax3.plot(bond2[:2],bond2[2:4],bond2[4:6], color='r') 
     ax3.scatter(x_new, y_new, z_new) 
     ax3.set_xlabel('\nX') 
     ax3.set_ylabel('\nY') 
     ax3.set_zlabel('\nZ') 
     plt.show() 
     return x, y, z, x_new, y_new, z_new 

Answer 1

這個問題可能是，這些行不這樣做你所期望的：

x_dummy = x_new 
y_dummy = y_new 

他們不創建數組的副本，但只會重複參考文獻。因此，在修改_dummy「版本」時，實際上是「擰緊」原始_new陣列，因爲它們（引用）同一個對象。

要實現你正在尋找（我認爲）的行爲，你就需要強制數據的實際拷貝：

x_dummy = x_new.copy() 
y_dummy = y_new.copy()