Python OpenGL:如何将纹理应用于此立方体?
我正在尝试学习OpenGL,我已经学习了很多关于加载纹理的教程,但是每一个教程似乎都错过了最重要的一步:如何在某些东西上实际放置纹理 为此,我使用Python,下面是加载纹理的函数:Python OpenGL:如何将纹理应用于此立方体?,python,opengl,pygame,pyopengl,Python,Opengl,Pygame,Pyopengl,我正在尝试学习OpenGL,我已经学习了很多关于加载纹理的教程,但是每一个教程似乎都错过了最重要的一步:如何在某些东西上实际放置纹理 为此,我使用Python,下面是加载纹理的函数: def loadTexture(): textureSurface = pygame.image.load('test_image.png') textureData = pygame.image.tostring(textureSurface,"RGBA",1) width = textu
def loadTexture():
textureSurface = pygame.image.load('test_image.png')
textureData = pygame.image.tostring(textureSurface,"RGBA",1)
width = textureSurface.get_width()
height = textureSurface.get_height()
glEnable(GL_TEXTURE_2D)
texid = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texid)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
return texid
下面是加载我的多维数据集的函数:
vertices = (
# x y z
( 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:
glColor3fv((1,1,1))
for vertex in edge:
glVertex3fv(vertices[vertex])
glEnd()
这是主循环:
pygame.init()
display = (800,600)
screen = pygame.display.set_mode(display, DOUBLEBUF | OPENGL | OPENGLBLIT)
gluPerspective(45, display[0]/display[1],0.1,50.0)
glTranslatef(0.0,0.0,-5)
while True:
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
Cube()
pygame.display.flip()
pygame.time.wait(10)
但是这个立方体是没有构造的。我不知道如何在立方体上实际使用加载的纹理,而我找到的每个纹理教程都将我带到loadTexture函数,而没有实际告诉我如何使用它。我把它叫哪里?如何使用texid?您的实际代码几乎没有问题:
- 您没有调用加载纹理的方法李>
- 你们只画立方体的线条,你们需要用实际的纹理填充多边形,这意味着使用三角形或四边形和纹理坐标
- 你没有处理pygame事件
import pygame
import sys
from OpenGL.GL import *
from OpenGL.GLU import *
vertices = (
# x y z
(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 loadTexture():
textureSurface = pygame.image.load('test_image.png')
textureData = pygame.image.tostring(textureSurface, "RGBA", 1)
width = textureSurface.get_width()
height = textureSurface.get_height()
glEnable(GL_TEXTURE_2D)
texid = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, texid)
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height,
0, GL_RGBA, GL_UNSIGNED_BYTE, textureData)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
return texid
def draw_cube(lines=False):
if lines:
glBegin(GL_LINES)
for edge in edges:
glColor3fv((1, 1, 1))
for vertex in edge:
glVertex3fv(vertices[vertex])
glEnd()
else:
glBegin(GL_QUADS)
glTexCoord2f(0.0, 0.0)
glVertex3f(-1.0, -1.0, 1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(1.0, -1.0, 1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(1.0, 1.0, 1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(-1.0, 1.0, 1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(-1.0, -1.0, -1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(-1.0, 1.0, -1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(1.0, 1.0, -1.0)
glTexCoord2f(0.0, 0.0)
glVertex3f(1.0, -1.0, -1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(-1.0, 1.0, -1.0)
glTexCoord2f(0.0, 0.0)
glVertex3f(-1.0, 1.0, 1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(1.0, 1.0, 1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(1.0, 1.0, -1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(-1.0, -1.0, -1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(1.0, -1.0, -1.0)
glTexCoord2f(0.0, 0.0)
glVertex3f(1.0, -1.0, 1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(-1.0, -1.0, 1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(1.0, -1.0, -1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(1.0, 1.0, -1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(1.0, 1.0, 1.0)
glTexCoord2f(0.0, 0.0)
glVertex3f(1.0, -1.0, 1.0)
glTexCoord2f(0.0, 0.0)
glVertex3f(-1.0, -1.0, -1.0)
glTexCoord2f(1.0, 0.0)
glVertex3f(-1.0, -1.0, 1.0)
glTexCoord2f(1.0, 1.0)
glVertex3f(-1.0, 1.0, 1.0)
glTexCoord2f(0.0, 1.0)
glVertex3f(-1.0, 1.0, -1.0)
glEnd()
pygame.init()
display = (800, 600)
screen = pygame.display.set_mode(
display, pygame.DOUBLEBUF | pygame.OPENGL | pygame.OPENGLBLIT)
loadTexture()
gluPerspective(45, display[0] / display[1], 0.1, 50.0)
glTranslatef(0.0, 0.0, -5)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
draw_cube(lines=False)
pygame.display.flip()
上面的代码没有使用最佳实践,但它将帮助您解决您的问题
不过有一个建议,我建议您在从internet随机转储一些代码之前先阅读一些opengl教程,尝试了解图形管道是如何工作的,然后一切都将开始变得有意义。另外,我建议您学习如何使用旧的好的,因此我当时错过了glTexCoord。非常感谢。我正在学习一些教程,我对这件事很感兴趣。我开始更了解它了。我会先尝试一些更一般的教程。