# #112 â€” 3D Rendering with Rotation and Projection

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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 matrice ...

Webpage with a matrix multiplication calculator

Wikipedia page with information and resources about rotation matrices.

Wikipedia page with information and resources about 3D projection.

In this coding challenge, I visualize a 4D Hypercube (aka "Tesseract") in Processing (Java).

In this video, I introduce the idea of "Linear Algebra" and explore the matrix math required for a simple neural network library.

In this video, I write a function to perform matrix multiplication in Java.