Box3

new Box3(min?: Vector3, max?: Vector3)

THREE equivalent: THREE.Box3

3D axis-aligned bounding box. Used for frustum culling, raycasting, and bounding-volume tests.

Differs from THREE.js

Uses British spelling: centre/getCentre instead of center/getCenter.

Properties

Name	Type	Description
min	Vector3	Lower corner.
max	Vector3	Upper corner.
centre	Vector3	Center point (read-only getter).
size	Vector3	Width/height/depth (read-only getter).
isEmpty	boolean	True if the box has no volume (read-only).

Methods

Method	Description
setFromObject(object: Node): this	Computes the box from a scene object’s geometry.
setFromPoints(points: Vector3[]): this	Computes the box enclosing all points.
expandByPoint(point: Vector3): this	Expands the box to include the point.
containsPoint(point: Vector3): boolean	Returns true if the point is inside the box.
intersectsBox(box: Box3): boolean	Returns true if the boxes overlap.
intersectsSphere(sphere: Sphere): boolean	Returns true if the box intersects the sphere.
clone(): Box3	Returns a new Box3 with the same bounds.