RayTracer VS NGL

And here there is a project of mine base on them (and not only): aromanro/RayTracer: A ray tracing program (github.com)

I've got a basic obj parser in my ray tracing project: https://github.com/aromanro/RayTracer

And this one: https://github.com/aromanro/RayTracer is with ray tracing, not using opengl, but it illustrates spheres that are 'really' spheres, that is, not made out of polygons. In principle such thing could be done with opengl as well (or some variation of it).

I started out with 'Ray Tracing in One Weekend' (actually it was in very few hours in a Saturday), then went further, first with the other two volumes then with some papers and other things on the net and in the end I've got this: https://github.com/aromanro/RayTracer

I started with number 2 (continuing with the other two in the series), then went further and ended up with this: https://github.com/aromanro/RayTracer

I have a number of instructions on my Github pages here https://github.com/NCCA/NGL/blob/main/Windows.md whilst aimed at my own library the first part about installing Visual Studio and the basic setup will help.

code here https://github.com/NCCA/NGL

My Windows build is here https://github.com/NCCA/NGL/blob/main/.github/workflows/windows.yml I use vcpkg for installing 3rd party libs and the msvc-dev command from here https://github.com/ilammy/msvc-dev-cmd

Also I have just done an experimental version of my code that uses WSL2 (which supports graphics). You could try that. https://github.com/NCCA/NGL/blob/NewShaderLib/WSL.md

I also have a ShaderLib class that does similar stuff keeping everything in a static map (used to be a singleton class). Been using it for teaching for a number of years you can see it here https://github.com/NCCA/NGL

There are loads of edge cases and gotcha's as well. I have a full(ish) parser here with unit tests if it helps. (Note I use pystring to do the string processing). https://github.com/NCCA/NGL/blob/main/src/Obj.cpp unit tests here https://github.com/NCCA/NGL/blob/main/tests/ObjTests.cpp. May give you some ideas.

I use glfw in a number of projects here are my instructions for building my library https://github.com/NCCA/NGL/blob/main/Windows.md You should be able to use the bits you need from here to setup vcpkg etc. I suggest using the free Visual Studio community edition and installing most of the tools you need from there. After that install vcpkg and setup the paths required. (see my notes).

The one I use in my teaching is here. https://github.com/NCCA/NGL it also includes Math / Vec class which you may not need if you use something like GLM. Also this uses TDD so get into writing unit tests as part of it.

typically I just have classes with static factory methods to keep things together, usually with a std::unordered_map s_things; so I can create by name. This is an example for an OpenGL Vertex Array Object https://github.com/NCCA/NGL/blob/master/include/ngl/VAOFactory.h

I have several using a Factory design pattern here https://github.com/NCCA/NGL Checkout https://github.com/NCCA/NGL/blob/master/include/ngl/AbstractVAO.h for the basic structure, then I have different versions depending upon context and usage.