Challenges

The Dragon Curve fractal is created by repeatedly folding a strip of paper in half, then unfolding it to form a curve. In this challenge, I attempt to code an animation of the Dragon Curve forming with p5.js in JavaScript.

What happens when two circles collide in a p5.js canvas? In this video, I examine the math and implement idealized elastic collisions in a JavaScript physics simulation. This video supplements the Nature of Code book series in Chapter 6 which uses 3rd party physics libraries to handle collisions rather than a direct implementation.

All aboard as I attempt to simulate the artistic process of paper marbling. The algorithm is based on the paper 'Mathematical Marbling' by S. Lu, A. Jaffer, X. Jin, H. Zhao, and X. Mao. The code is written in JavaScript using the p5.js library.

Happy Pi Day 2024! In this video, I attempt to create an Apollonian Gasket using the Descartes Circle Theorem and complex numbers. So many circles!

Stippling is an artistic technique that uses numerous dots to craft an image. In this coding challenge I attempt to implement a weighted Voronoi stippling algorithm with p5.js along with the Delaunay triangulation package from d3.js.

It's Genuary 2024! Watch as I attempt to build a falling sand simulation in p5.js using a grid of pixels and simple rules.

How is nature hidden in a pile of 0s and 1s? Let's find out by coding a p5.js visualization of the Wolfram Elementary Cellular Automaton!

Learn to create your own climate spiral using p5.js and temperature data. Originally designed by the climate scientist Ed Hawkins, the climate spiral is a visual representation of the changing temperatures over time, illustrating the urgent need to address climate change.

Embark on a squishy adventure as I attempt to create a soft body physics simulation for a character with toxiclibs.js and p5.js!

How do toothpicks approximate the value of pi? I'll show you by coding a simulation in p5.js!

Take a trip back in time and watch me attempt to build a 3D graphics engine in AppleSoft BASIC on a restored Apple II+ computer! Can I render a spinning cube?

Take a trip back in time and let's learn all about GR (graphics) and HGR (high resolution graphics) in AppleSoft BASIC on a restored Apple II+ computer! Can we render a fractal tree?

Take a trip back in time and let's code the Snake Game in AppleSoft BASIC on a restored Apple II+ computer! GOTO and GOSUB! Line numbers!

This project is a collaboration with Grady Hillhouse at the Practical Engineering YouTube channel. This is my attempt to code a simulation of Horizontal Directional Drilling, laparoscopic surgery for the earth!

Straight out of quantum mechanics, Wave Function Collapse is an algorithm for procedural generation of images. In this video (recorded over 3 live streams) I attempt the tiled model and explore a variety of solutions to the algorithm in JavaScript with p5.js. Also, check out WFC's predecessor: Model Synthesis (more info below).

It's the Monty Hall Problem! In JavaScript! With p5.js! Yes, you really double your chances of winning by switching doors. I hope to convince you of this in this video!

Happy Pi Day! How many delicious digits of Pi can you catch from the sky? In JavaScript!

It's the Mandelbulb! What happens when you take the original fractal (The Mandelbrot Set) and extend it into 3D space. And how do you visualize it in Processing (Java) as a point cloud?

Why do prime numbers show up as diagonals in a spiral? In this video, I create a visualization in JavaScript (p5.js) of the Ulam Spiral (aka Prime Spiral) named for Polish Mathematician Stanislav Ulan.

Let's make ASCII art in p5.js together! In this video, I demonstrate a variety of techniques for translating the pixels of an image into text and finish with rendering video as text ASCII characters in a DOM.

Let's make a slide puzzle in p5.js together! We'll be using images, nested loops, and arrays, and by the end of our journey, we'll have a fully playable game!

In this video I explore the wonders of the copy() function in the creative coding platform Processing, simulating slitscan photography and bending time itself! This video is thanks to Tim Rodenbröker’s generous donation to The Processing Foundation!

Have you ever wanted to know more about bézier curves in p5.js? Thanks to a generous donation from Jason Oswald, I do a deep dive exploring the bézier curve function and the math behind the algorithm?

It's finally time to attempt a Self-Avoiding Walk! In this video, I quickly visualize a simple JavaScript p5.js implementation of a self-avoiding walk. I then tackle the more complex problem of backtracking to find a solution to a space-filling self-avoiding walk.

🥧 Happy Pi Day 2021! This year I estimate the digits of π with random numbers and the probability of two integers being co-prime.

Boing! Time to simulate a spring force! This challenge fits into chapters 2 and 3 of the Nature of Code and demonstrates how to simulate the oscillating motion of a spring using vectors and forces.

Choo choo! In this challenge, I build on chapter 3 (Oscillating Motion) of the Nature of Code series and simulate a simple pendulum in p5.js via angular acceleration.

In this challenge, I demonstrate the entire process of training and deploying a machine learning classification model in JavaScript – data collection, model training, and prediction!

Liven up your video calls with p5.js, ml5.js, Teachable Machine, and OBS Studio!

In this episode of Coding in the Cabana, Gloria Pickle and I investigate the Marching Squares algorithm and apply it to Open Simplex Noise in Processing.

Coding in the Cabana is a series where I attempt challenges from my garden cabana in Brooklyn, NY. In this episode, I explore the beauty of Worley noise.

🥧 Happy Pi Day 2020! In this challenge, I build a simple web application using p5.js and node.js to search in the first billion digits of Pi.

Coding in the Cabana is a series where I attempt challenges from my garden cabana in Brooklyn, NY. In this episode, I animate the path of the classic "space filling curve" known as the Hilbert Curve.

Happy holidays! #SupportP5! This video shows an attempt to make a snowflake from a "kaleidoscope painting" effect.

In this challenge I take the Tic Tac Toe game from coding challenge #149 and add an AI opponent for a human player by implenenting the Minimax algorithm.

This challenge uses the pre-trained SketchRNN machine learning model (available with the ml5.js library) to create a p5.js sketch that finishes a person's drawing.

It's the second episode of Coding in the Cabana! Here I attempt to visualize the Collatz Conjecture in Processing.

The Ramer–Douglas–Peucker algorithm (aka "iterative end-point fit algorithm"), takes a curve composed of line segments and reduces the fidelty to a "lower fidelity" curve with fewer points.

Coding in the Cabana is a series where I attempt challenges from my garden cabana in Brooklyn, NY. In this episode, I code a visualization of the Maurer Rose pattern in JavaScript (p5.js).

In this challenge, I attempt to create a Ukulele tuner in JavaScript using p5.js, ml5.js and the pre-trained machine learning model CREPE: A Convolutional REpresentation for Pitch Estimation. Can you make one with a more elegant and creative interface?

In this challenge I generate rainbows using the StyleGAN Machine Learning model available in Runway ML and send the rainbows to the browser with p5.js! This challenge is based on the live coding talk from the 2019 Eyeo Festival.

This is a beginner-friendly challenge where I attempt to code a basic version of the game Tic-Tac-Toe using JavaScript and the p5.js library.

In this coding challenge, I implement the “Gift Wrapping algorithm” (aka Jarvis march) for calculating a convex hull in JavaScript. This is a foundational topic in computational geometry!

In this challenge, I attempt to make my own version of Google’s Dinosaur Game (T-Rex run!) with a unique twist – controlling the dinosaur (unicorn, in this case) with a machine learning Speech Commands model!

Building off of the previous coding challenge (2D Ray Casting) I attempt to make my own version the original Wolfenstein 3D Raycasting engine and visualize the "field of view" of the moving particle.

In this video, I implement a basic ray casting engine with line segment "surfaces" and vector "rays." The result simulates a light source casting shadows in a 2D canvas.

Inspired by the recent image of the Powehi m87 black hole from the Event Horizon Telescope, I visualize the behavior or light (photons) following the path of spacetime around the black hole in p5.js.

Let's try implementing a famously faster sorting algorithm: the Quicksort! And visualize the process with p5.js!

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!

Let's celebrate PI Day by approximating the digits of Pi using a special location in the legendary Mandelbrot set fractal!