我想在python中使用OpenGL和pygame制作一个立方体

Question

我想用OpenGL和pygame制作一个立方体，但它给出了一个错误。

这是代码：

import pygame
from pygame.locals import *
from OpenGL import *
from OpenGL.GLU import *
verticies = (
(1, -1, -1),
(1, 1, -1),
(-1, 1, -1),
(-1, -1, -1),
(1, -1, 1),
(1, 1, 1),
(-1, -1, 1),
(-1, 1, 1),
)
edges = (
(0,1),
(0,3),
(0,4),
(2,1),
(2,3),
(2,7),
(6,3),
(6,4),
(6,7),
(5,1),
(5,4),
(5,7),
)

def Cube():
glBegin(GL_LINES)
for edge in edges:
for index in edge:
glVertex3fv(vertices[index])
glEnd()
glEnd()
def main():
pygame.init()
display = (800,600)
pygame.display.set_mode(display, DOUBLEBUF|OPENGL)
gluPerspective(45, (display[0]/display[1]), 0.1, 50.0)
glTranslatef(0.0,0.0, -5)
glRotatef(0,0,0,0)

while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
Cube()
pygame.display.flip()
pygame.time.wait(10)
main()   

这是错误：

error                                     Traceback (most recent call last)
Input In [3], in <cell line: 50>()
47     glRotatef(0,0,0,0)
49 while True:
---> 50     for event in pygame.event.get():
51         if event.type == pygame.QUIT:
52             pygame.quit()

error: video system not initialized

实际上，输出是一个旋转的空立方体，它由顶点和边组成。但是编码错误是CCD_ 1，并且我认为该错误来自帧或视频。

Answer 1

这是缩进的问题。应用程序循环需要在pygame.display.set_mode:之后的main中运行

def main():
pygame.init()
display = (800,600)
pygame.display.set_mode(display, DOUBLEBUF|OPENGL)
gluPerspective(45, (display[0]/display[1]), 0.1, 50.0)
glTranslatef(0.0,0.0, -5)
glRotatef(0,0,0,0)

# INDENTATION
#-->|
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
Cube()
pygame.display.flip()
pygame.time.wait(10)
main()