Solid Line is made of square tiles with predefined patterns, disposed randomly, and on top of which is drawn a line. By isolating the colors, this line creates a new structure of seemingly interlaced shapes.

There are three possible level of details, and a rare "Outline" feature that will render only the line layer.

SVG generated with JavaScript.

The SVG can be saved by pressing "s" on the full-screen view.
A PNG version can be exported by pressing "e" on the full-screen view.

By default the dimensions of the export are 6000×8000.
These dimensions can be changed by adding, for example, ?w=12000 to the full-screen page URL, where w is the desired width. Then press "e" to export at this size.