Show HN: An easy-to-use ray-tracer written from scratch in C++

https://github.com/diegomacario/Super-Sunshine

by diegomacario • 9 years ago

18 6 9 years ago

Hi everyone!

This year I embarked on a quest to learn as much as I could about computer graphics.

I initially focused on building small applications using OpenGL, but even after completing a few of them, I still felt that I did not fully understand how they worked. OpenGL was simply hiding too many details from me.

Hoping that building something from scratch would give me more insight, I started working on this ray-tracer. The whole experience quickly devolved into a ridiculous passion project. I built the ray-tracer from the ground up, starting with the API used to perform operations with points, vectors, normals and transformation matrices. I also read Scott Meyer’s “Effective C++” book while I worked on it, which really helped me improve my C++ skills.

Once I finished it, I challenged myself to explain everything I had learned as clearly as I could. For that purpose, I designed and generated all the images and animations you see in the readme (except for the ones of the Stanford Dragon and the human head). Most of the images started out on paper; I would draw them, break them down into triangles, and figure out the coordinates of each vertex. I found it very satisfying to generate images in such rudimentary fashion. I feel that the constraints imposed by my ray-tracer just push one to be more creative!

I now believe that building a ray-tracer is the best way to start learning about computer graphics. The whole experience is simply illuminating.

I hope you enjoy the readme!

brudgers• 9 years ago

Looks like a good piece of work. It might be interesting to read more about your experience of writing the ray tracer.

NotQuantum• 9 years ago

AH! I took Ravi's class on Computer Graphics two years ago! I still refer to his slides whenever I start a new openGL project. Thanks for sharing!

diegomacario3• 9 years ago

Wooo! I heard the course is being updated so that it covers more modern OpenGL, so it might be worth it to revisit it soon. Thank you for your nice comment!

Azuki• 9 years ago

This is a funny project .

diegomacario3• 9 years ago

Hehehe thanks! I tried to make the captions of most images as ridiculous as possible.

Show HN: An easy-to-use ray-tracer written from scratch in C++

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