A few fractal-generating programs from a vintage book ([[https://www.amazon.co.uk/Fractal-Programming-Roger-T-Stevens/dp/1558510370/][Fractal Programming in C]]). 1989-style C code was completely rewritten, and generates [[https://en.wikipedia.org/wiki/Netpbm#File_formats][Netpbm]] files now.

The book is ok, but there's no particular reason I would recommend it over any other book.

• Compiling and running

Examples should easy to build on any Linux using a recent GCC and GNU Make:

+begin_src shell-script

make

-o for an output file

./mandelbrot -o output.ppm see output.ppm

+end_src

Some of the programs accept additional arguments but defaults should be fine too.

• A few examples

  Mandelbrot set:

  [[file:examples/mandelbrot.png]]

  Peano curve:

  [[file:examples/peano.png]]

  Hilbert curve:

  [[file:examples/hilbert.png]]

  Bifurcation equation:

  [[file:examples/bifurcation.png]]

  A simple tree:

  [[file:examples/tree.png]]

  Koch snowflake:

  [[file:examples/koch.png]]

  Sierpinsky triangle:

  [[file:examples/sierpinski.png]]