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


This helps with visualizing what a camera contains in its frustum.
It visualizes the frustum of a camera using a [page:LineSegments].

Code Example

const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 ); const helper = new THREE.CameraHelper( camera ); scene.add( helper );


[example:webgl_camera WebGL / camera]
[example:webgl_geometry_extrude_splines WebGL / extrude / splines]


[name]( [param:Camera camera] )

[page:Camera camera] -- The camera to visualize.

This create a new [Name] for the specified camera.


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

[property:Camera camera]

The camera being visualized.

[property:Object pointMap]

This contains the points used to visualize the camera.

[property:Object matrix]

Reference to the [page:Object3D.matrixWorld camera.matrixWorld].

[property:Object matrixAutoUpdate]

See [page:Object3D.matrixAutoUpdate]. Set to *false* here as the helper is using the camera's [page:Object3D.matrixWorld matrixWorld].


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

[method:undefined dispose]()

Disposes of the internally-created [page:Line.material material] and [page:Line.geometry geometry] used by this helper.

[method:undefined update]()

Updates the helper based on the projectionMatrix of the camera.


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