An image viewer that "curls" an input 1D RGB stream into 2D by drawing it as a Hilbert curve. You can pass various "click actions" on the command-line that writes the 1D coordinate (ordinate?) of the clicked pixel to stdout, a file, or your clipboard.

Dependencies: SDL2

Demo video and a bit of context: https://mastodon.social/@sqx/113476622271559306

License: public domain