Box3

Axis-aligned bounding box defined by minimum and maximum corners.

Box3 represents a 3D region bounded by two corners: min and max. It is used for spatial queries, culling tests, intersection checks, and computing bounding volumes. A default-constructed box is empty and intersection treats boxes as half-open intervals.

Constructor

Creates a box from optional corner points. The corners are cloned. When a corner is omitted the box starts empty.

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

Parameter	Description
min?: vec3	The minimum corner.
max?: vec3	The maximum corner.

Properties

min

Minimum corner of the box.

min: vec3;

max

Maximum corner of the box.

max: vec3;

Methods

clone() Box3

Returns a deep copy of the box.

clone(): Box3;

isEmpty() boolean

Returns true when the box encloses no volume.

isEmpty(): boolean;

intersects() boolean

Tests whether two boxes overlap. Boxes are treated as half-open intervals so touching faces do not count as overlap.

static intersects(a, b): boolean;

Parameter	Description
a: Box3	The first box.
b: Box3	The second box.

expandWithPoint() void

Grows the box in place to contain the given point.

expandWithPoint(p): void;

Parameter	Description
p: vec3	The point to include.

applyTransform() void

Transforms the box in place by the given matrix. The result is the axis-aligned box of the eight transformed corners so the box can grow under rotation.

applyTransform(matrix): void;

Parameter	Description
matrix: mat4	The transform to apply.