Challenges

Featured Challenge:
#188 — Voice Chatbot

In this coding challenge, ...

apr 20, 2026

Voice Chatbot

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rotation matrix

Can I build an interactive 3D Rubik's cube in Processing? Yes! Someday I hope to return to this project and add an AI solver!

Rubik's Cube

Can I draw and rotate a 3D cube using Processing's 2D renderer with just some math?!?! Yes! Watch to learn more about rotation and projection matrices along with perspective and orthographic projection!

3D Rendering with Rotation and Projection