A page with persistent items procedurally generated and modified by the user. A building game, dongma? 8-P
We have a point in space. Probably on the surface of a planet or moon that I am interested in. It has a position, an index within an array of similar points and it knows who it's neighbors are. We can subdivide the triangles formed by its neighbors into quads which are really triangle pairs which belong to that point because it's an original vertex, not a daughter formed by subdivision.