【Python基础】1.4.7 Turtle实例——用Python作画之彩虹

来源：互联网发布：lol末日人工智能投票编辑：程序博客网时间：2024/05/14 12:21

语言：Python
IDE：Python.IDE

需求
做出彩虹效果
颜色空间
RGB模型：光的三原色，共同决定色相
HSB/HSV模型：H色彩，S深浅，B饱和度，H决定色相
需要将HSB模型转换为RGB模型
代码段

from turtle import *def HSB2RGB(hues):    hues = hues * 3.59 #100转成359范围    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 rgbdef rainbow():    hues = 0.0    color(1,0,0)    #绘制彩虹    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()    #输出文字    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()

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