internal — not linked, not indexed
Shapes as rolling bodies
Six shapes, one scroll, the same distance travelled. Nothing about how they move is authored: the number of sides decides the rotation, the step and the bob.
Why this and not just more shapes. A shape scattered on a page for decoration weakens a system built on one primitive. A shape chosen because a section should lurch or glide is the system, extended. Watch the triangle against the dodecagon.
triangle120° a side
bob 0.500R
square90° a side
bob 0.293R
pentagon72° a side
bob 0.191R
hexagon60° a side
bob 0.134R
dodecagon30° a side
bob 0.034R
circlecontinuous
bob 0.000R
| Shape | Sides | Turn per side | Bob |
|---|---|---|---|
| Triangle | 3 | 120° | 0.500R |
| Square | 4 | 90° | 0.293R |
| Pentagon | 5 | 72° | 0.191R |
| Hexagon | 6 | 60° | 0.134R |
| Dodecagon | 12 | 30° | 0.034R |
| Circle | — | continuous | 0.000R |
Where this could go
If the shape carries the energy, a section picks one for how it should feel: a triangle where something arrives hard, a hexagon where it should settle, a circle where it should simply keep going. The spectrum thread each one carries is the existing rule, unchanged: colour only where separate things meet.