Featured Challenge: #175 — AppleSoft BASIC 3D Cube

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?

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?

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!

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!

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 animate the path of the classic "space filling curve" known as the Hilbert Curve.

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.

In this video, I follow Mike Ash’s guide to Fluid Simulation and port Jos Stam’s "Real-Time Fluid Dynamics for Games" algorithm and code in Processing (Java).

In this holiday coding challenge, I create a "Brownian Tree Snowflake" in Processing (Java). This video was recorded as part of a fundraiser for the Processing Foundation.

Yes, sorting numbers can be fun! In this challenge I attempt to implement the "bubble sort" algorithm in Processing (Java) and visualize the process itself with animated lines.

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!

In yet another “Pi Day” coding challenge, I attempt to generate a pdf “Book of Pi” with the first 10 million digits of Pi mapped to color. Processing (Java) is used for this project.

In this coding challenge, I attempt to implement the Floyd-Steinberg Dithering algorithm and create a "image stippling" effect on an image (kitten, of course) using Processing.

In this two part challenge, I cover beginShape(), endShape(), and texture(), TRIANGLE_STRIP, QUAD_STRIP, and more. I combine these geometry functions with the Toxiclibs physics library to simulate a waving flag (with a unikitty image texture!)

In this coding challenge, I attempt to create a "Fractal Spirograph" with Processing (Java). The visuals are inspired by images and explanation on C. J. Chen’s blog.

In this coding challenge, I follow up on the Earthquake Data Visualization challenge and create a 3D version in Processing(Java) using spherical coordinates. I also discuss some 3D vector math including the cross product.

In this coding challenge, I simulate a "random walk" with vectors in p5.js, varying the distance of each step size. This is known as a "Lévy Flight" (named after french mathematician Paul Lévy.)

In this coding challenge, I use a collection of Obama Administration’s facebook images to create a “photo mosaic” of President Obama with Processing (Java).

In this coding challenge, I implement “Pixel Sorting” in Processing (Java). Using a “selection sort” algorithm, I sort the pixels of an image by brightness and hue.

In this coding challenge, I implement a "Poisson-disc Sampling" algorithm to evenly (but randomly) distribute a set of seed points throughout a canvas. The algorithm is implemented in JavaScript using p5.js.

Let's code some Metaballs (aka Isosurfaces) in Processing and how to control them using the Blob Detection methodology from my computer vision tutorial!

In this 4th of July themed coding challenge, I build an HTML5 canvas fireworks simulation from scratch using the p5.js JavaScript library. I also show how to use Processing to create 3D Fireworks.

In this coding challenge, I use the "superformula" to make a 3D "supershape" in Processing. This is part 4 of a multi-part series on superformulas, superellipses and supershapes