# Créé par samip, le 20/04/2016 en Python 3.2
#from lycee import *
from random import *
from math import *
from tkinter import *
import time

L,H=800, 600

def animation_branche_2(LIGNE, X1, Y1, X2, Y2, decalageX, decalageY, width, premier):
    global index_branche
    if(LIGNE>2500):
        return
    #global X1, X2, Y1, Y2, décalageX, décalageY
    if (-11<Y2<H+10 and -11<X2<L+10) and not(premier and Y2<H//2):
        X2=X2+decalageX
        Y2=Y2+decalageY
        Fond.coords(LIGNE, X1, Y1, X2, Y2)
        vitesse=80
        #correctif de vitesse pour les dernières lignes :
        # if decalageX != 0:
        #     vitesse = max(int(vitesse*fabs(decalageX)//2),vitesse)
        fenetre.after(vitesse,animation_branche_2,LIGNE, X1, Y1, X2, Y2, decalageX, decalageY, width, premier)
    else:
        if -11<Y1<H+10 and -11<X1<L+10:
            decalageXnew=decalageX
            decalageXnew2=decalageX
            while decalageXnew==decalageX or decalageXnew2==decalageX:
                if(randint(1,2)==1):
                    decalageXnew = randint(-3,-1)
                    decalageXnew2 = randint(1,3)
                else:
                    decalageXnew = randint(1,3)
                    decalageXnew2 = randint(-3,-1)
            #plus joli si les premiers sont très écartées :
            if premier :
                decalageXnew=-7
                decalageXnew2=5
                decalageXnew3=-3
                decalageXnew4=2
            # m = randint(3,7)
            # n = randint(2,m-1)
            m = randint(20,25)
            n = 3*m//8
            X1_new=((m-n)*X1+n*X2)//m
            Y1_new=((m-n)*Y1+n*Y2)//m
            if premier :
                width_new = 10
                m = randint(20,25)
                n = m//2-5
                X1_new=X1
                #Y1_new=((m-n)*Y1+n*Y2)//m
                #Y1_new2=(n*Y1+(m-n)*Y2)//m
                X1_new2=X1
                Y1_new = tab_branches_gauche[index_branche]
                Y1_new2 = Y1_new+10
                index_branche = index_branche+1

            else :
                width_new = max(width//2,1)
                #de l'autre côté de la branche
                #X1_new2=(n*X1+(m-n)*X2)//m
                #Y1_new2=(n*Y1+(m-n)*Y2)//m
                n=m-n+3
                X1_new2 = (n*X1+(m-n)*X2)//m
                Y1_new2=(n*Y1+(m-n)*Y2)//m
            creer_branche_2(X1_new,Y1_new,X1_new,Y1_new,decalageXnew,decalageY,width_new, False)
            creer_branche_2(X1_new2,Y1_new2,X1_new2,Y1_new2,decalageXnew2,decalageY,width_new, False)

def creer_branche_2(X1,Y1,X2,Y2,decalageX,decalageY,width,premier = False):
    Color='#FFFFFF'
    ligne=Fond.create_line(X1, Y1, X2, Y2, width=width, fill=Color)
    #print("ligne=",ligne)
    animation_branche_2(ligne,X1, Y1, X2, Y2, decalageX, decalageY,width, premier)

fenetre=Tk()
Fond=Canvas(fenetre, width=L, height=H, bg="black")
Fond.grid()

def arbre_v2(event):
    global index
    #définition des variables de base du tronc (jacques)
    Y1=H+9
    Y2=Y1
    X1=tab_depart[index]
    index=index+1
    X2=X1
    decalageX=randint(0,0)
    decalageY=-1#pour la vitesse
    creer_branche_2(X1,Y1,X2,Y2,decalageX,decalageY,40,True)

#fenetre.attributes("-fullscreen", 1)
index = 0
index_branche = 0
tab_depart = [7*L//16,10*L//16]#pour savoir en quelles abscisses partent les deux arbres
tab_branches_gauche = [H//2+1*H//4-35,H//2+1*H//4+50]#pour savoir à quelle hauteur partent les branches gauche
fenetre.bind('<a>',arbre_v2)
fenetre.mainloop()