Python海龟绘图实现的旋转蛇代码

最近在写一本Python新书，这个案例实在放不下了，和大家分享下Python源代码：from turtle import *def drawPie(x, y, r, a1, a2, col):color(col)penup()goto(x, y)setheading(a1)pendown()forward(r)left(90)...

跟童老师学编程

531人浏览 · 2021-07-18 09:26:49

跟童老师学编程 · 2021-07-18 09:26:49 发布

最近在写一本Python新书，这个案例实在放不下了，和大家分享下Python源代码：

from turtle import *
def drawPie(x, y, r, a1, a2, col):
    color(col)
    penup()
    goto(x, y)
    setheading(a1)
    pendown()
    forward(r)
    left(90)
    begin_fill()
    circle(r, a2-a1)
    left(90)
    forward(r)
    end_fill()
tracer(False)
hideturtle()
colormode(255)
bgcolor('gray')
totalOffset = 0
for centerX in range(-1000, 1200, 400):
    for centerY in range(-600, 800, 400): 
        for radius in range(200, 0, -50):
            for i in range(20):
                offset = i*18 + totalOffset 
                drawPie(centerX, centerY, radius, offset, offset+3, (0, 0, 0))
                drawPie(centerX, centerY, radius, offset+3, offset+9, (200, 0, 0))
                drawPie(centerX, centerY, radius, offset+9, offset+12, (255, 255, 255))
                drawPie(centerX, centerY, radius, offset+12, offset+18, (0, 240, 220))
            totalOffset = totalOffset + 9  
done()