import turtle as t
import random
import time
# 畫櫻花的軀幹(60,t)
def tree(branch, t):
time.sleep(0.0005)
if branch > 3:
if 8 <= branch <= 12:
if random.randint(0, 2) == 0:
t.color('snow') # 白色
else:
t.color('lightcoral') # 淡珊瑚色
t.pensize(branch / 3)
elif branch < 8:
if random.randint(0, 1) == 0:
t.color('snow')
else:
t.color('lightcoral') # 淡珊瑚色
t.pensize(branch / 2)
else:
t.color('sienna') # 赭(zhě)色
t.pensize(branch / 10) # 6
t.forward(branch)
a = 1.5 * random.random()
t.right(20 * a)
b = 1.5 * random.random()
tree(branch - 10 * b, t)
t.left(40 * a)
tree(branch - 10 * b, t)
t.right(20 * a)
t.up()
t.backward(branch)
t.down()
# 掉落的花瓣
def petal(m, t):
for i in range(m):
a = 200 - 400 * random.random()
b = 10 - 20 * random.random()
t.up()
t.forward(b)
t.left(90)
t.forward(a)
t.down()
t.color('lightcoral') # 淡珊瑚色
t.circle(1)
t.up()
t.backward(a)
t.right(90)
t.backward(b)
# 繪圖區域
t = t.turtle()
# 畫布大小
w = t.screen()
t.hideturtle() # 隱藏畫筆
t.getscreen().tracer(5, 0)
w.screensize(bg='wheat') # wheat小麥
t.left(90)
t.up()
t.backward(150)
t.down()
t.color('sienna')
# 畫櫻花的軀幹
tree(60, t)
# 掉落的花瓣
petal(200, t)
w.exitonclick()
from turtle import *
from random import *
from math import *
def tree(n,l):
pd()#下筆
#陰影效果
t = cos(radians(heading()+45))/8+0.25
pencolor(t,t,t)
pensize(n/3)
forward(l)#畫樹枝
if n>0:
b = random()*15+10 #右分支偏轉角度
c = random()*15+10 #左分支偏轉角度
d = l*(random()*0.25+0.7) #下乙個分支的長度
#右轉一定角度,畫右分支
right(b)
tree(n-1,d)
#左轉一定角度,畫左分支
left(b+c)
tree(n-1,d)
#轉回來
right(c)
else:
#畫葉子
right(90)
n=cos(radians(heading()-45))/4+0.5
pencolor(n,n*0.8,n*0.8)
circle(3)
left(90)
#新增0.3倍的飄落葉子
if(random()>0.7):
pu()
#飄落t = heading()
an = -40 +random()*40
setheading(an)
dis = int(800*random()*0.5 + 400*random()*0.3 + 200*random()*0.2)
forward(dis)
setheading(t)
#畫葉子
pd()
right(90)
n = cos(radians(heading()-45))/4+0.5
pencolor(n*0.5+0.5,0.4+n*0.4,0.4+n*0.4)
circle(2)
left(90)
pu()
#返回t=heading()
setheading(an)
backward(dis)
setheading(t)
pu()
backward(l)#退回
bgcolor(0.5,0.5,0.5)#背景色
ht()#隱藏turtle
speed(0)#速度 1-10漸進,0 最快
tracer(0,0)
pu()#抬筆
backward(100)
left(90)#左轉90度
pu()#抬筆
backward(300)#後退300
tree(12,100)#遞迴7層
done()
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