# [name]

[link:http://en.wikipedia.org/wiki/Frustum Frustums] are used to determine what is inside the camera's field of view. They help speed up the rendering process - object which lie outside a camera's frustum can safely be excluded from rendering.
This class is mainly intended for use internally by a renderer for calculating a [page:Camera camera] or [page:LightShadow.camera shadowCamera]'s frustum.

## Constructor

### [name]([param:Plane p0], [param:Plane p1], [param:Plane p2], [param:Plane p3], [param:Plane p4], [param:Plane p5])

[page:Plane p0] - (optional) defaults to a new [page:Plane].
[page:Plane p1] - (optional) defaults to a new [page:Plane].
[page:Plane p2] - (optional) defaults to a new [page:Plane].
[page:Plane p3] - (optional) defaults to a new [page:Plane].
[page:Plane p4] - (optional) defaults to a new [page:Plane].
[page:Plane p5] - (optional) defaults to a new [page:Plane].
Creates a new [name].

## Properties

### [property:Array planes]

Array of 6 [page:Plane planes].

## Methods

### [method:Frustum clone]()

Return a new Frustum with the same parameters as this one.

### [method:Boolean containsPoint]( [param:Vector3 point] )

[page:Vector3 point] - [page:Vector3] to test.
Checks to see if the frustum contains the [page:Vector3 point].

### [method:Frustum copy]( [param:Frustum frustum] )

[page:Frustum frustum] - The frustum to copy
Copies the properties of the passed [page:Frustum frustum] into this one.

### [method:Boolean intersectsBox]( [param:Box3 box] )

[page:Box3 box] - [page:Box3] to check for intersection.
Return true if [page:Box3 box] intersects with this frustum.

### [method:Boolean intersectsObject]( [param:Object3D object] )

Checks whether the [page:Object3D object]'s [page:Geometry.boundingSphere bounding sphere] is intersecting the Frustum.
Note that the object must have a [page:Geometry] or [page:BufferGeometry] so that the bounding sphere can be calculated.

### [method:Boolean intersectsSphere]( [param:Sphere sphere] )

[page:Sphere sphere] - [page:Sphere] to check for intersection.
Return true if [page:Sphere sphere] intersects with this frustum.

### [method:Boolean intersectsSprite]( [param:Sprite sprite] )

Checks whether the [page:Sprite sprite] is intersecting the Frustum.

### [method:Frustum set]( [param:Plane p0], [param:Plane p1], [param:Plane p2], [param:Plane p3], [param:Plane p4], [param:Plane p5] )

Sets the current frustum from the passed planes. No plane order is implicitely implied.
Please note that this method only copies the values from the given objects.

### [method:Frustum setFromMatrix]( [param:Matrix4 matrix] )

[page:Matrix4 matrix] - [page:Matrix4] used to set the [page:.planes planes]
This is used by the [page:WebGLRenderer] to set up the Frustum from a [page:Camera Camera]'s [page:Camera.projectionMatrix projectionMatrix] and [page:Camera.matrixWorldInverse matrixWorldInverse].

## Source

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