如何在 pygame.draw.lines 中为每一行使用不同的颜色 [英] How to use different colors for each line in pygame.draw.lines

问题描述

我最近开始学习 pygame，这就是我的问题.无论如何，我可以为使用 pygame.draw.lines 绘制的每条线使用不同的颜色吗?这是我的代码.

导入pygamepygame.init()屏幕 = pygame.display.set_mode((640, 480), pygame.SCALED)screen.fill('白色')pygame.draw.lines(screen, 'red', True, [(10, 100), (20, 200), (30, 100)]) # 所有线条都是红色的为真:pygame.display.update()

我得到的输出

我想要的输出

我尝试了什么

 pygame.draw.lines(screen, ['green', 'blue', 'orange'], True, [(10, 100), (20, 200), (30, 100)])

错误

ValueError: 无效的颜色参数

换句话说，我想在下面的代码中实现我想要的但使用 pygame.draw.lines

pygame.draw.line(screen, 'green', (10, 100), (20, 200))pygame.draw.line(screen, 'blue', (20, 200), (30, 100))pygame.draw.line(screen, 'orange', (30, 100), (10, 100))

我检查了 pygame.draw.lines

I recently started to learn pygame and herein lies my question. Is there anyway I can use different colors for each line drawn using pygame.draw.lines? This is my code.

import pygame

pygame.init()
screen = pygame.display.set_mode((640, 480), pygame.SCALED)
screen.fill('white')

pygame.draw.lines(screen, 'red', True, [(10, 100), (20, 200), (30, 100)]) # all lines are red

while True:
    pygame.display.update()

Output I get

Output I want

What I tried

 pygame.draw.lines(screen, ['green', 'blue', 'orange'], True, [(10, 100), (20, 200), (30, 100)])

Error

ValueError: invalid color argument

In other words, I want to achieve what I want in the following code but using pygame.draw.lines

pygame.draw.line(screen, 'green', (10, 100), (20, 200))
pygame.draw.line(screen, 'blue', (20, 200), (30, 100))
pygame.draw.line(screen, 'orange', (30, 100), (10, 100))

I checked the pygame.draw.lines docs but I am not sure if the color argument there takes a list as I have given. It only mentions "Color or int or tuple(int, int, int, [int]))"

This example is for a triangle, but in my actual use-case I want to draw a decagon and I am not sure if using pygame.draw.line 10 times is the way to go if I want a different color for each line.

PS : Do let me know if any clarification is needed. Many Thanks.

解决方案

You have to draw each line segment separately. Write a function that uses a list of points and colors to draw the line:

def draw_colorful_line(surf, colors, closed, points, width=1):
    for i in range(len(points)-1):
        pygame.draw.line(surf, colors[i], points[i], points[i+1], width)
    if closed:
        pygame.draw.line(surf, colors[-1], points[-1], points[0], width)

Use the function to draw the line:

colors = ['green', 'blue', 'red']
points = [(10, 100), (20, 200), (30, 100)]
draw_colorful_line(screen, colors, True, points)

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