python學習--互動式圖形編程執行個體四

標籤：turtle   彩虹   python學習   and   end   center   env   ide   rom   

#!/usr/bin/env python3# -*- coding: utf-8 -*-
#畫雪
from turtle import *from random import *    def ground():    hideturtle()    speed(100)    for i in range(400):        pensize(randint(5,10)) #畫筆大小隨機        x = randint(-400,350)        y = randint(-280,-1)        r = -y/280 #<1的隨機值        g = -y/280 #<1的隨機值        b = -y/280 #<1的隨機值        pencolor((r, g, b))        penup()        goto(x,y)        pendown()        forward(randint(40,100)) #隨機畫40 - 100 的線條 def snow():        hideturtle()    pensize(2)    speed(100)    for i in range(100):        r = random() #隨機值        g = random() #隨機值        b = random() #隨機值        pencolor(r, g, b)        penup()        setx(randint(-350,350))         sety(randint(1,270))        pendown()        dens = randint(8,12)        snowsize = randint(10,14)        for j in range(dens):            forward(snowsize) #前進            backward(snowsize) #後退            right(360/dens) #旋轉角度          def main():    setup(800, 600, 0, 0) #設定畫布大小    tracer(False) #不顯示動畫    bgcolor("black")        snow()    ground()    tracer(True)    mainloop()     if __name__ == "__main__":    main()

#!/usr/bin/env python3# -*- coding: utf-8 -*-
#畫彩虹
from turtle import * def HSB2RGB(hues):    hues = hues * 3.59 #100轉成359範圍    rgb=[0.0,0.0,0.0]    i = int(hues/60)%6    f = hues/60 -i    if i == 0:        rgb[0] = 1; rgb[1] = f; rgb[2] = 0    elif i == 1:        rgb[0] = 1-f; rgb[1] = 1; rgb[2] = 0    elif i == 2:        rgb[0] = 0; rgb[1] = 1; rgb[2] = f    elif i == 3:        rgb[0] = 0; rgb[1] = 1-f; rgb[2] = 1    elif i == 4:        rgb[0] = f; rgb[1] = 0; rgb[2] = 1    elif i == 5:        rgb[0] = 1; rgb[1] = 0; rgb[2] = 1-f    return rgb     def rainbow():    hues = 0.0    color(1,0,0)    #繪製彩虹    hideturtle()    speed(100)    pensize(3)    penup()    goto(-400,-300)    pendown()    right(110)    for i in range (100):        circle(1000)        right(0.13)        hues = hues + 1        rgb = HSB2RGB(hues)        color(rgb[0],rgb[1],rgb[2])        penup()     def main():    setup(800, 600, 0, 0)    bgcolor((0.8, 0.8, 1.0))    tracer(False)    rainbow()    #輸出文字    tracer(False)    goto(100,-100)    pendown()    color("red")    write("Rainbow",align="center",          font=("Script MT Bold", 80, "bold"))    tracer(True)         mainloop() if __name__ == "__main__":    main()

 

python學習--互動式圖形編程執行個體四