如何使用Python Turtle进行线性渐变? [英] How do I make a linear gradient with Python Turtle?

问题描述

我目前正在尝试复制此图像:

I'm currently trying to replicate this image: https://imgur.com/a/IZIPGkg I'm trying to make that gradient in the background but I have zero clue how to do it and there's basically nothing on the internet. Edit: I have the RGB colors for both ends if that helps. The top is rgb(154,0,254) and the bottom is rgb(221,122,80).

解决方案

Crude but resonably quick and effective:

from turtle import Screen, Turtle

COLOR = (0.60156, 0, 0.99218)  # (154, 0, 254)
TARGET = (0.86328, 0.47656, 0.31250)  # (221, 122, 80)

screen = Screen()
screen.tracer(False)

WIDTH, HEIGHT = screen.window_width(), screen.window_height()

deltas = [(hue - COLOR[index]) / HEIGHT for index, hue in enumerate(TARGET)]

turtle = Turtle()
turtle.color(COLOR)

turtle.penup()
turtle.goto(-WIDTH/2, HEIGHT/2)
turtle.pendown()

direction = 1

for distance, y in enumerate(range(HEIGHT//2, -HEIGHT//2, -1)):

    turtle.forward(WIDTH * direction)
    turtle.color([COLOR[i] + delta * distance for i, delta in enumerate(deltas)])
    turtle.sety(y)

    direction *= -1

screen.tracer(True)
screen.exitonclick()

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