Cathedral Game
Newton-Raphson Fractal
Spirographs
Forest Fire
Butterflies
Shape-packing
Affine Transformations
Pythagorean Triples
Jigsaws
3x + 1
WebGL
Mandelbrot
Doodles
Mandelbrot
Colouring-in
Sudoku
Cellular Automata
Mazes
SVG Index
Fibonacci Patterns
Circle Patterns

Line Patterns

A very old application written in python, it creates patterns by joining dots inscribed around a circle. A rathe minimal version of the spirograph. The image is an animation of the first 29 complete graphs, starting at 3.

Python Source Code

Before html 5 I didn't know of any way to create patterns interactively so I wrote these python routines to create patterns and render them as bitmaps. They are still available to download, though they are written in Python 2.6.

Java Applets

These applets were written years ago, Java has moved on so much since then they no longer work.