from geolib import *
from math import pi,cos,sin,tan
from random import randint

imax = int(input("N="))*2*pi

_r=min(ppn_w, ppn_h)//2 - 3
_step=0.15

# Center
x0, y0 = ppn_w//2, ppn_h//2

# Radar colors
C=ppn_has_color and (255,170,113,75,50,0) or (0,)+(255,)*5

# black screen
rectangle(0, 0, ppn_w, ppn_h, color=(255*(not ppn_has_color),)*3, fill="full")

# Radar outline
circle(x0,y0,_r+1,ppn_has_color and (0,C[0],0) or (C[0],)*3)

# Object
O=[]

i=0
while i<imax:
  p1=(x0+int(_r*cos(i)),y0+int(_r*sin(i)))
  for j in range(1,len(C)+1):
    p2=(x0+int(_r*cos(i-j*_step)),y0+int(_r*sin(i-j*_step)))
    drawTriangle((x0, y0),p1,p2,ppn_has_color and (0,C[j-1],0) or (C[j-1],)*3)
    p1=p2
  # draw obj
  if randint(0,100)<15:
    tmp=randint(_r//20,_r*19//20)
    O.append([x0+int(tmp*cos(i)),y0+int(tmp*sin(i)),25])
  for io in range(len(O)):
    o=O[io]
    drawTriangle((o[0],o[1]),(o[0]-_r//20,o[1]+_r//20*tan(pi/3)),(o[0]+_r//20,o[1]+_r//20*tan(pi/3)),(o[2]*10,)*3)
    O[io][2]-=1
  if(len(O) and O[0][2]==-1):
    O=O[1:]
  i+=_step
  show_screen()