A quick utility for rendering celtic knots. Usage is mostly explained by the --help flags, or a brief browse of the code. Check out the samples too.
These are all hand designed.
These can be seen in the sample folder. Here is the input file for the first image above
2 2
xx
xx
x-x
|x|
x-x
Long, thin knots (useful for borders etc) can be generated with the generate_braid program. Here are some samples of various sizes.
Usage is very simple, but to get started try running
python celtic samples/5x7.spec
and viewing knot.png.
For braids like the above, use (on linux/OSX)
./generate_braid | ./celtic
Use the --help flag for more options.