If you're interested in 3D modeling and computer graphics, then learning how to view OBJ files with OpenGL in Python can be a great skill to have. In this article, we'll walk you through the process of using Python to render 3D models from OBJ files using the OpenGL library.

Step 1: Install the required libraries

First, make sure you have Python and the PyOpenGL library installed on your system. You can install PyOpenGL using pip:

$ pip install PyOpenGL

Step 2: Load the OBJ file

Once you have PyOpenGL installed, you can start by loading the OBJ file into your Python script. You can use the PyWavefront library to easily load OBJ files:

import pywavefront

scene = pywavefront.Wavefront('model.obj')

Step 3: Set up the OpenGL context

Next, you'll need to set up the OpenGL context for rendering the 3D model. You can use the pyglet library to create an OpenGL context and set up a window for rendering:

import pyglet

window = pyglet.window.Window()

@window.event

def on_draw():

window.clear()

# Add your OpenGL rendering code here

Step 4: Render the 3D model

Finally, you can use the OpenGL library to render the 3D model from the OBJ file. You'll need to use the data from the OBJ file to specify the vertices, normals, and textures for rendering the model:

@window.event

def on_draw():

window.clear()

# Set up your OpenGL context here

glBegin(GL_TRIANGLES)

for face in scene.mesh_list[0].faces:

for vertex_i in face:

glVertex3f(*scene.vertices[vertex_i])

glEnd()

With these steps, you can now use Python and OpenGL to view OBJ files and render 3D models in your own applications. This can be a great starting point for learning more about 3D modeling, computer graphics, and game development in Python.