[page:Object3D] → [page:Line] → [page:LineSegments] →

# [name]

Helper object to visualize a [page:Box3].

## Example

`var box = new THREE.Box3(); box.setFromCenterAndSize( new THREE.Vector3( 1, 1, 1 ), new THREE.Vector3( 2, 1, 3 ) ); var helper = new THREE.Box3Helper( box, 0xffff00 ); scene.add( helper );`

## Constructor

### [name]( [param:Box3 box], [param:Color color] )

[page:Box3 box] -- the Box3 to show.
[page:Color color] -- (optional) the box's color. Default is 0xffff00.
Creates a new wireframe box that represents the passed Box3.

## Properties

See the base [page:LineSegments] class for common properties.

### [property:Box3 box]

The Box3 being visualized.

## Methods

See the base [page:LineSegments] class for common methods.

### [method:void updateMatrixWorld]( [param:Boolean force] )

This overrides the method in the base [page:Object3D] class so that it also updates the wireframe box to the extent of the [page:Box3Helper.box .box] property.

## Source

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]