A rotation accepted by the public API (§21, plan P5-3).
A number is an angle in radians about +Z (§7a) — the only rotation a
"2d" world has — and widens to the equivalent quaternion through
resolveRotation. A Quaternion given to a "2d" world must already be a
pure Z rotation; anything else is a validation failure rather than a silent
projection.
A rotation accepted by the public API (§21, plan P5-3).
A
numberis an angle in radians about +Z (§7a) — the only rotation a"2d"world has — and widens to the equivalent quaternion throughresolveRotation. AQuaterniongiven to a"2d"world must already be a pure Z rotation; anything else is a validation failure rather than a silent projection.