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4 dessins d’arbres de Noël (sur le simulateur il n’y a qu’un arbre qui s’affiche mais vous en aurez 4 différents en mettant le programme sur votre machine)

Découvrez ma chaine YouTube (Python, JavaScript, calculatrices…)

from turtle import *
from math import *
from time import sleep
from random import randint, random
from kandinsky import fill_rect

def T(u,a1,a2,b1,b2):
    return int((b2-b1)/(a2-a1)*(u-a1)+b1)

def f1(x): return -100
def f2(x): return 80 + 9 * x / 4

def trait(f,p):
 xd = -80
 while xd < 80:
  ps = randint(4,7)
  penup()
  x,y = xd, f(xd)
  goto(x, y)
  pendown()
  pensize(ps)
  while y < 80 - 9 * x / 4:
   fd(2)
   (x, y) = position()
  xd += ps + p

NB = 10
svg = ['M',166,38,'C',170,38,178,40,174,42,169,44,160,43,163,46,166,48,171,47,180,49,178,52,160,53,159,56,159,59,175,58,189,59,176,63,159,62,151,69,156,74,182,73,208,71,199,77,131,81,139,83,147,85,202,87,222,86,210,89,116,106,116,106,116,106,226,100,233,102,222,107,109,117,99,119,124,120,231,115,244,115,226,123,111,134,100,140,128,138,237,136,250,137,242,149,82,153,65,167,103,166,277,151,288,160,261,170,75,183,60,193,83,198,128,190,145,204,'M',156,38,'C',156,38,164,16,165,12,170,16,176,24,177,34,169,28,159,28,150,23,162,21,169,20,183,18,172,24,156,38,156,38,'Z']

def move(x,y): 
  goto(x-160,110-y)

def coord(a,b,c,d,t):
  return a*(1-t)**3+3*b*t*(1-t)**2+3*c*t*t*(1-t)+d*t**3

def bezier(l):
  pendown()
  t = 0
  for i in range(NB+1):
    x = coord(l[0],l[2],l[4],l[6],t)
    y = coord(l[1],l[3],l[5],l[7],t)
    move(x,y)
    t += 1/NB

def tree0():
    i = 0
    color(30,140,0)
    tt = len(svg)
    while i<tt:
        pensize(1 + int(12 * i / tt) if i < 120 else 2)
        if svg[i] == "M":
            l = [svg[i+1],svg[i+2]]
            penup()
            move(l[0], l[1])
            i += 3
        elif svg[i] == "Z" or svg[i] == "C": i += 1
        else:  
            for j in range(6): l.append(svg[i+j])
            bezier(l)
            l = [svg[i+4],svg[i+5]]
            i += 6
    hideturtle()

def tree1():
    setheading(30)
    trait(f1,12)
    trait(f2,1)
    penup()
    goto(0,92)

def tree2():
    xd = -75
    while xd < 75:
     h = 80-9*abs(xd)/4
     penup()
     x,y = xd,-100
     goto(x,y)
     pendown()
     a = T(abs(x),0,75,90,75)
     if x > 0: a = 180-a
     setheading(a)
     while y < h:
      pensize(T(y,-100,h,7,1))
      fd(1)
      (x,y) = position()
     xd += 5
     penup()
     goto(0,90)
    fill_rect(150,210,20,10,(30,140,0))

def tree3():
    k=.4
    for a in range(173):
        x=k*a*cos(21.6*a)
        pendown() if a else penup()
        goto(x,75-a)
        if a>158: k=.1
    penup()
    goto(0,85)


while True:
 for i in sorted(range(4), key=lambda x: random()):  
    reset()    
    pencolor(30,140,0)   
    eval("tree"+str(i)+"()")
    sleep(1)