'Hello, world!' T-shirt

How to

Run make all to produce all files:

output.svg – SVG of just zeros and ones, designed for printing in white on black T-shirts.
output-bg.svg – SVG with black background for preview purposes.
generated.html and index.html – HTML files for convenience to preview in a browser.

Requires python3 to be accessible in $PATH.

Photo

The idea for the design (output.svg, on the right) comes from the original T-shirts of VKOShP IX (2008) programming contest (on the left).