Interface BoundingVolume

§53's BoundingVolume: a geometry's extent in its own local space, as both an axis-aligned box and the sphere that circumscribes it.

const volume = geometry.bounds;
volume.min;     // lowest corner
volume.max;     // highest corner
volume.center;  // (min + max) / 2
volume.radius;  // |max − min| / 2 — circumradius of the box
Copy

Everything here is live. The vectors belong to the geometry, are rewritten in place by the next recompute, and must not be mutated by callers; copy them if you need to keep them. (The same rule resolveWorldTransform states for a returned world matrix.)

An empty geometry has no volume, and says so rather than pretending: the box is the identity element of bounds union (min = +Infinity, max = -Infinity, so folding an empty geometry into a scene bound contributes nothing), and center/radius are NaN — the volume of no points is not a point at the origin. Consumers gate on Number.isFinite(volume.radius), which is the same finiteness gate computeWorldBoundingSphere already applies for the same reason.