語言：Python
IDE：Python.IDE

需求

做出彩虹效果

顏色空間

RGB模型：光的三原色，共同決定色相
HSB/HSV模型：H色彩，S深淺，B飽和度，H決定色相
需要將HSB模型轉換為RGB模型

代碼示例：

#-*- coding:utf-8 –*- from turtle import * def HSB2RGB(hues): ?hues = hues * 3.59 #100轉成359范圍 ?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() ?#輸出文字 ?tracer(False) ?goto(100,-100) ?pendown() ?color("red") ?tracer(True) ?mainloop() if __name__ == "__main__": ?main() 結果

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轉載于:https://www.cnblogs.com/shinawear/p/10529574.html

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