coloradd模块0.25版示例代码棒棒糖_colorset_saturationset_lightset

coloradd模块主要用来配合海龟画图，能使所画的图形更加漂亮。
本源代码为coloradd模块学习代码,请认真查看saturationset和lightset和coloradd与colorset的用法
saturationset: 饱和度设置,lightset:亮度设置,coloradd:颜色增加,colorset颜色设置。

import turtle
from coloradd import *

ft = ("",12,"normal")
screen = turtle.getscreen()    
screen.colormode(255)
screen.delay(0)
screen.bgcolor('black')
screen.title("draw lollipop 画棒棒糖")

c  = (255,0,0)                # RGB红色
turtle.ht()                   # 隐藏海龟
turtle.penup()                # 抬起笔来
turtle.goto(0,100)            # 定位坐标
turtle.pendown()              # 落下画笔
for i in range(300):          # 迭代变量
    turtle.width(i/10)        # 画笔笔宽
    turtle.fd(i/10)           # 海龟前进
    turtle.rt(10)             # 海龟右转
    c = coloradd(c,0.01)      # 颜色增加
    turtle.pencolor(c)        # 画笔颜色
    
turtle.penup()                # 抬起笔来
turtle.goto(0,100)            # 定位坐标
turtle.setheading(-90)        # 方向向下
turtle.color("brown")         # 画笔颜色
turtle.pendown()              # 落下笔来
turtle.fd(280)                # 前进300
turtle.penup()                # 抬起笔来
turtle.color("gray")          # 画笔颜色
turtle.write("www.lixingqiu.com",align='center',font=ft)

# 亮度设置
turtle.goto(-300,-200)
turtle.write("lightset test (亮度测试)",font=ft)
turtle.goto(-300,-230)
c = (255,0,0)
turtle.setheading(0)
turtle.pendown()
for x in range(200):
    ys = lightset(c,x/200)   # 设置红色的亮度
    turtle.color(ys)
    turtle.fd(3)
turtle.penup()

# 饱和度设置
turtle.goto(-300,-280)
turtle.write("saturation test (饱和度测试)",font=ft)
turtle.goto(-300,-300)
c = (255,0,0)
turtle.setheading(0)
turtle.pendown()
for x in range(200):
    ys = saturationset(c,x/200) # 设置红色的饱和度
    turtle.color(ys)
    turtle.fd(3)

screen.mainloop()