This project is a basic 3D rendering engine written in C++ using OpenGL, GLFW, and GLAD. It loads and displays a 3D model from an .obj file and allows user interaction through keyboard inputs.

The program is designed to showcase a rotating 3D object (such as the 42 school logo), with smooth switching between flat-colored faces and a textured surface—no external libraries are used for object loading, matrix math, or shaders.

• C++
• OpenGL
• GLFW – for window and input management
• GLAD – for loading OpenGL function pointers

• Load and parse .obj 3D model files
• Render models with:
  • Per-face color shading
  • Texturing with toggling via keypress (with smooth transition)
• Basic camera controls
• Model rotates around its center axis
• Custom shader compilation and management

Shaders are small programs that run on the GPU to handle graphics rendering. In OpenGL, you typically use two types of shaders:

• Executes once per vertex
• Transforms 3D coordinates (model space) to 2D screen space
• Handles perspective projection and object rotation/translation

• Executes once per pixel
• Calculates the final color of a pixel
• Here, it decides whether to display a flat color per face or sample from a texture

In this project:

• Shaders are written in GLSL
• Loaded at runtime from custom files
• Compiled and linked manually using OpenGL functions
• Uniforms are used to pass transformation matrices and toggle states

make
./scop <path/to/model.obj>

• https://en.wikipedia.org/wiki/Wavefront_.obj_file
• https://github.com/ssloy/tinyrenderer/wiki
• https://www.youtube.com/playlist?list=PLlrATfBNZ98foTJPJ_Ev03o2oq3-GGOS2
• https://www.glfw.org/documentation.html
• https://learnopengl.com/