@graview/layout

Where everything goes, as a pure function.

layout(graph, schema, view, options) -> Layout

Same graph and same view state in, identical positions out. That purity is what pays for the animation: interpolate(a, b, t) tweens ANY two layouts, so a kind of navigation nobody anticipated animates like the ones that were designed, and no transition is written by hand.

Three planes — focus, relations, context — plus a fourth altitude above the stack where the kinds sit on a ring and your own interface stays live, shrunk, in the middle of it. A node may declare a natural size distinct from the size it is drawn at, and the renderer scales between them.

View state is a URL. Every stop has an address, the back button works, and sameView decides whether two addresses are the same place.