動態生成櫻花
效果圖（這個是動態的）：
實現代碼：
1 import turtle as T 2 import random 3 import time 4 5 # 畫櫻花的軀干(60,t) 6 def Tree(branch, t): 7 time.sleep(0.0005) 8 if branch > 3: 9 if 8 <= branch <= 12: 10 if random.randint(0, 2) == 0: 11 t.color('snow') # 白 12 else: 13 t.color('lightcoral') # 淡珊瑚色 14 t.pensize(branch / 3) 15 elif branch < 8: 16 if random.randint(0, 1) == 0: 17 t.color('snow') 18 else: 19 t.color('lightcoral') # 淡珊瑚色 20 t.pensize(branch / 2) 21 else: 22 t.color('sienna') # 赭(zhě)色 23 t.pensize(branch / 10) # 6 24 t.forward(branch) 25 a = 1.5 * random.random() 26 t.right(20 * a) 27 b = 1.5 * random.random() 28 Tree(branch - 10 * b, t) 29 t.left(40 * a) 30 Tree(branch - 10 * b, t) 31 t.right(20 * a) 32 t.up() 33 t.backward(branch) 34 t.down() 35 36 # 掉落的花瓣 37 def Petal(m, t): 38 for i in range(m): 39 a = 200 - 400 * random.random() 40 b = 10 - 20 * random.random() 41 t.up() 42 t.forward(b) 43 t.left(90) 44 t.forward(a) 45 t.down() 46 t.color('lightcoral') # 淡珊瑚色 47 t.circle(1) 48 t.up() 49 t.backward(a) 50 t.right(90) 51 t.backward(b) 52 53 # 繪圖區域 54 t = T.Turtle() 55 # 畫布大小 56 w = T.Screen() 57 t.hideturtle() # 隱藏畫筆 58 t.getscreen().tracer(5, 0) 59 w.screensize(bg='wheat') # wheat小麥 60 t.left(90) 61 t.up() 62 t.backward(150) 63 t.down() 64 t.color('sienna') 65 66 # 畫櫻花的軀干 67 Tree(60, t) 68 # 掉落的花瓣 69 Petal(200, t) 70 w.exitonclick()
飄落效果
效果圖：
實現代碼：
1 from turtle import * 2 from random import * 3 from math import * 4 5 def tree(n,l): 6 pd()#下筆 7 #陰影效果 8 t = cos(radians(heading()+45))/8+0.25 9 pencolor(t,t,t) 10 pensize(n/3) 11 forward(l)#畫樹枝 12 13 if n>0: 14 b = random()*15+10 #右分支偏轉角度 15 c = random()*15+10 #左分支偏轉角度 16 d = l*(random()*0.25+0.7) #下一個分支的長度 17 #右轉一定角度,畫右分支 18 right(b) 19 tree(n-1,d) 20 #左轉一定角度，畫左分支 21 left(b+c) 22 tree(n-1,d) 23 #轉回來 24 right(c) 25 else: 26 #畫葉子 27 right(90) 28 n=cos(radians(heading()-45))/4+0.5 29 pencolor(n,n*0.8,n*0.8) 30 circle(3) 31 left(90) 32 #添加0.3倍的飄落葉子 33 if(random()>0.7): 34 pu() 35 #飄落 36 t = heading() 37 an = -40 +random()*40 38 setheading(an) 39 dis = int(800*random()*0.5 + 400*random()*0.3 + 200*random()*0.2) 40 forward(dis) 41 setheading(t) 42 #畫葉子 43 pd() 44 right(90) 45 n = cos(radians(heading()-45))/4+0.5 46 pencolor(n*0.5+0.5,0.4+n*0.4,0.4+n*0.4) 47 circle(2) 48 left(90) 49 pu() 50 #返回 51 t=heading() 52 setheading(an) 53 backward(dis) 54 setheading(t) 55 pu() 56 backward(l)#退回 57 58 bgcolor(0.5,0.5,0.5)#背景色 59 ht()#隱藏turtle 60 speed(0)#速度 1-10漸進，0 最快 61 tracer(0,0) 62 pu()#抬筆 63 backward(100) 64 left(90)#左轉90度 65 pu()#抬筆 66 backward(300)#后退300 67 tree(12,100)#遞歸7層 68 done()
暗色效果
效果：
實現代碼：
1 from turtle import * 2 from random import * 3 from math import * 4 5 def tree(n, l): 6 pd() 7 t = cos(radians(heading() + 45)) / 8 + 0.25 8 pencolor(t, t, t) 9 pensize(n / 4) 10 forward(l) 11 if n > 0: 12 b = random() * 15 + 10 13 c = random() * 15 + 10 14 d = l * (random() * 0.35 + 0.6) 15 right(b) 16 tree(n - 1, d) 17 left(b + c) 18 tree(n - 1, d) 19 right(c) 20 else: 21 right(90) 22 n = cos(radians(heading() - 45)) / 4 + 0.5 23 pencolor(n, n, n) 24 circle(2) 25 left(90) 26 pu() 27 backward(l) 28 bgcolor(0.5, 0.5, 0.5) 29 ht() 30 speed(0) 31 tracer(0, 0) 32 left(90) 33 pu() 34 backward(300) 35 tree(13, 100) 36 done()
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