如何改变Python Turtle窗口的大小？

Question

我目前正在尝试使用Python的turtle库绘制Mandelbrot集合。但是，我的问题与Mandelbrot无关。我无法更改海龟窗口的大小。我该如何解决？

我尝试使用screensize方法初始化屏幕并设置屏幕大小。但是这样做没有任何变化。

以下是我绘制集合的代码。我粘贴了整个代码，因为我不知道我错在哪里导致屏幕大小没有改变。

from turtle import *


height = 360
width = 360
screen = Screen()
screen.screensize(width, height)


tu = Turtle()
tu.hideturtle()
tu.speed(0)
tu.penup()


def decreasePoint(n, start1, stop1, start2, stop2):
    return ((n - start1) / (stop1 - start1)) * (stop2 - start2) + start2


for x in range(width):
    for y in range(height):

        a = decreasePoint(x, 0, width, -2, 2)
        b = decreasePoint(y, 0, height, -2, 2)
        ca = a
        cb = b

        n = 0
        z = 0
        while n < 100:
            aa = a * a - b * b
            bb = 2 * a * b

            a = aa + ca
            b = bb + cb
            n += 1

            if abs(a + b) > 16:
                break
        bright = 'pink'
        if (n == 100):
            bright = 'black'

        tu.goto(x , y)
        tu.pendown()
        tu.dot(4, bright)
        tu.penup()
done()

- Nils Walker

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可能是如何在Python海龟中使画布变大的重复问题。 - Laurent LAPORTE

Answer 1

改为：

screen.screensize(width, height)

做：

screen.setup(width, height)

screensize() 方法设置海龟可以漫游的区域大小，但不会改变屏幕大小（尽管名称如此），只是可滚动区域。此外，为了简化您的代码、加速它并生成更详细的结果，我建议进行以下改写：

from turtle import Screen, Turtle

WIDTH, HEIGHT = 360, 360

screen = Screen()
screen.setup(WIDTH + 4, HEIGHT + 8)  # fudge factors due to window borders & title bar
screen.setworldcoordinates(0, 0, WIDTH, HEIGHT)

turtle = Turtle()
turtle.hideturtle()
turtle.penup()

def scalePoint(n, start1, stop1, start2, stop2):
    return (n - start1) * (stop2 - start2) / (stop1 - start1)  + start2

screen.tracer(False)

for x in range(WIDTH):
    real = scalePoint(x, 0, WIDTH, -2, 2)

    for y in range(HEIGHT):

        imaginary = scalePoint(y, 0, HEIGHT, -2, 2)

        c = complex(real, imaginary)

        z = 0j

        color = 'pink'

        for _ in range(100):
            if abs(z) >= 16.0:
                break

            z = z * z + c
        else:
            color = 'black'

        turtle.goto(x, y)
        turtle.dot(2, color)

    screen.update()

screen.tracer(True)
screen.exitonclick()

- cdlane

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谢谢你的回答。screen.setup 运行良好。我不会看你重新编写我的代码，因为我想自己尝试一下。 - Nils Walker