import pygame from OpenGL.GL import * from OpenGL.GLU import * def load_obj(filename): vertices = [] faces = [] texcoords = [] with open(filename, 'r') as f: for line in f: if line.startswith('#'): continue values = line.split() if not values: continue if values[0] == 'v': if len(values) == 4: vertices.append(list(map(float, values[1:4]))) elif len(values) == 3: texcoords.append(list(map(float, values[1:3]))) elif values[0] == 'f': face = [] texcoord_face = [] for face_str in values[1:]: vertex_index, texcoord_index, _ = face_str.split('/') face.append(int(vertex_index)) texcoord_face.append(int(texcoord_index)) faces.append(face) texcoords.append(texcoord_face) return vertices, faces, texcoords def draw_obj(filename, tex_id): vertices, faces, texcoords = load_obj(filename) glBindTexture(GL_TEXTURE_2D, tex_id) glBegin(GL_TRIANGLES) for face, texcoord_face in zip(faces, texcoords): for vertex_index, texcoord_index in zip(face, texcoord_face): glVertex3fv(vertices[vertex_index - 1]) glTexCoord2fv(texcoords[texcoord_index - 1]) glEnd() pygame.init() display = (800, 600) pygame.display.set_mode(display, pygame.DOUBLEBUF | pygame.OPENGL) gluPerspective(45, (display[0]/display[1]), 0.1, 50.0) glTranslatef(0.0, 0.0, -5) tex_surface = pygame.image.load('texture.jpg') tex_data = pygame.image.tostring(tex_surface, 'RGB', 1) tex_id = glGenTextures(1) glBindTexture(GL_TEXTURE_2D, tex_id) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tex_surface.get_width(), tex_surface.get_height(), 0, GL_RGB, GL_UNSIGNED_BYTE, tex_data) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) 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) draw_obj('model.obj', tex_id) pygame.display.flip() pygame.time.wait(10)
时间: 2024-04-26 20:25:50 浏览: 144
这段代码是一个使用 Pygame 和 PyOpenGL 库加载和渲染 Wavefront OBJ 模型的示例代码。它从一个 OBJ 文件中读入模型的顶点、面和纹理坐标等信息,并将其渲染到 Pygame 显示窗口中。在渲染时,还使用了纹理贴图来增强模型的效果。
由于代码比较简单,所以很容易理解。如果您对 Pygame 和 PyOpenGL 有一定的了解,那么您应该可以很快地掌握这段代码的实现方式。如果您对这两个库不熟悉,您可以先学习它们的基础知识,然后再尝试理解这段代码。
相关问题
python,OpenGL加载obj模型
要在Python中加载和渲染OBJ模型,可以使用开源库PyOpenGL。下面是一个简单的加载和渲染OBJ模型的示例代码:
``` python
import pygame
from OpenGL.GL import *
from OpenGL.GLU import *
def load_obj(filename):
vertices = []
faces = []
with open(filename) as f:
for line in f:
if line.startswith('v '):
vertex = list(map(float, line.split()[1:]))
vertices.append(vertex)
elif line.startswith('f '):
face = list(map(int, [i.split('/')[0] for i in line.split()[1:]]))
faces.append(face)
return vertices, faces
def draw_obj(vertices, faces):
glBegin(GL_TRIANGLES)
for face in faces:
for vertex_id in face:
glVertex3fv(vertices[vertex_id - 1])
glEnd()
def main():
pygame.init()
display = (800, 600)
pygame.display.set_mode(display, pygame.DOUBLEBUF | pygame.OPENGL)
gluPerspective(45, (display[0] / display[1]), 0.1, 50.0)
glTranslatef(0.0, 0.0, -5)
vertices, faces = load_obj('your_obj_file.obj')
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)
draw_obj(vertices, faces)
pygame.display.flip()
pygame.time.wait(10)
if __name__ == '__main__':
main()
```
这个示例代码使用了Pygame和PyOpenGL库,它加载了一个OBJ模型文件并在窗口中渲染出来。你可以根据自己的需求修改代码。
python 使用opengl显示obj模型
在Python中使用OpenGL来显示OBJ模型,通常需要结合一些库如PyOpenGL、Pywavefront等。以下是基本步骤:
1. **安装所需库**:
- 首先确保已安装了`numpy`, `pyopengl` 和 `pywavefront` 等基础库。你可以通过pip安装它们:
```
pip install numpy pyopengl pywavefront
```
2. **导入库**:
```python
import pygame
from OpenGL.GL import *
from OpenGL.GLU import *
from wavefront_obj import WavefrontObj
```
3. **加载模型**:
使用`WavefrontObj`类加载OBJ文件,它会处理顶点数据、纹理坐标和法线信息:
```python
obj = WavefrontObj('path_to_your_model.obj')
vertices, texture_coords, normals = obj.vertices, obj.texture_coords, obj.normals
```
4. **设置窗口和初始化GL**:
```python
pygame.init()
display = (800, 600)
screen = pygame.display.set_mode(display, DOUBLEBUF | OPENGL)
gluPerspective(45, (display[0] / display[1]), 0.1, 50.0)
glTranslatef(0.0, 0.0, -5)
```
5. **绘制模型**:
循环渲染每个面片(triangle),将顶点数据传递给OpenGL的glBegin(), glVertex3f()等函数:
```python
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glBegin(GL_TRIANGLES)
for face in obj.faces:
v1, v2, v3 = face.vertices
glVertex3fv(vertices[v1])
glVertex3fv(vertices[v2])
glVertex3fv(vertices[v3])
glEnd()
pygame.display.flip()
pygame.time.wait(10) # 控制帧率
```
6. **清理资源**:
当退出程序时,记得关闭资源:
```python
pygame.quit()
```
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