Multi lines animation

Multi_lines_Animation_Code.py

import numpy as np
import matplotlib.animation as animation
from matplotlib import pyplot
from random import randint


fig, g = pyplot.subplots(figsize=(6,6))
pyplot.subplots_adjust(left = 0.0, right = 1.0, top = 1.0, bottom = 0.0)


bck = "black" # Background color
pyplot.rcParams['axes.facecolor']    = bck
pyplot.rcParams['savefig.facecolor'] = bck


def circ (r) : # Circunference points
    
    Ex = []
    Ey = []
       
    for x in range(0,r) :
            
         Ex.append(np.cos(2*np.pi/r*x))
         Ey.append(np.sin(2*np.pi/r*x))
    
    return Ex,Ey


def draw_l(hr, vr, nu): # Generates the points to draw the lines

    l = []
            
    dv = 50 # A small marging to avoid points too much close the the edge 
    
    for r in range(0,nu) :  
      
        x = randint(dv,hr-dv)
        y = randint(dv,vr-dv) 
        d = randint(0,30) # Initital position 
           
        l.append([x, y, d])
        
    return l  


ctd = 0 # Counter
fr = 29 # Number of frames

px,py = circ(fr) # Calling the circular function to make the coordinates

# Enlarging coordinates the size (to avoid run out of list's points) 
px += px*2 
py += py*2

# Resolution (600 x 600)
hr = 600
vr = 600

ls = draw_l(hr,vr,30) # Calling the function to get 30 points at 600 x 600 dots resolution 


def update(*args) :
  
  global ctd
  pyplot.clf()
    
  
  s = 20 # Movement intensity (circle's size multiplier)
  
  for i1 in range(0,len(ls)) :
               
      for i2 in range(i1,len(ls)) :           

          
          # Line parameters
          ca =  [ ls[i1][0] + px[ ctd+ls[i1][2] ]*s, ls[i2][0] + px[ ctd+ls[i2][2] ]*s ]
          cb =  [ ls[i1][1] + py[ ctd+ls[i1][2] ]*s, ls[i2][1] + py[ ctd+ls[i2][2] ]*s ]
          
          
          pyplot.plot( ca, cb, c = "red",  alpha = 0.9, linewidth = 0.5)
  
  ctd  +=1
     
  pyplot.grid(False) 
  pyplot.axis("OFF") 
  pyplot.xlim(0,hr)
  pyplot.ylim(0,vr)
         
  return ()

  
def init() :
      
    return()

anim = animation.FuncAnimation(fig, update, init_func=init, blit = True, frames=fr, repeat = False) 

                                                            
sf = 'Lines.gif'      
Sname = 'C:\\Users\\rober\\Desktop\\_' + sf 
         
   
anim.save(Sname, writer='imagemagick', fps=28)  


# You must have imagemagick installed in you computer (in C:\program files\) :
# https://www.imagemagick.org/script/index.php