Tesseract

A hypercube turning through an axis you can't point at. Hue tracks the fourth coordinate: cold is far in w, gold is near.

Movements

Unfold

All eight cells are cubes. Folded, three cells share every edge you see; opened, they come apart.

Rotation planes

The three gold planes turn through w. Only they can make the cube pass through itself.

Fractal

Each copy is the solid put through its own rotation again. The ornament is the state, iterated — not decoration laid over it.

View

Checkpoints

Save the state you are looking at — angles, fold, net, colour, zoom — then travel between the saves.

Checkpoints live in this browser, for this site alone. A JSON file is how you move them somewhere else, or keep them safe.

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drag turn in 3D · shift+drag turn through w
scroll zoom · space play / pause · r random · s save a checkpoint
w = −1  ·  far       near  ·  w = +1
recording the path