[page:Object3D] → [page:Light] →

# [name]

A point light that can cast shadow in one direction.
Affects objects using [page:MeshLambertMaterial] or [page:MeshPhongMaterial].

## Example

`// white spotlight shining from the side, casting shadow var spotLight = new THREE.SpotLight( 0xffffff ); spotLight.position.set( 100, 1000, 100 ); spotLight.castShadow = true; spotLight.shadowMapWidth = 1024; spotLight.shadowMapHeight = 1024; spotLight.shadowCameraNear = 500; spotLight.shadowCameraFar = 4000; spotLight.shadowCameraFov = 30; scene.add( spotLight );`

## Constructor

### [name]( [page:Float color], [page:Float intensity], [page:Float distance], [page:Boolean castShadow] )

## Properties

### .[page:Vector3 position]

Light's position.
Default — *new THREE.Vector3()*.

### .[page:Float intensity]

Light's intensity.
Default — *1.0*.

### .[page:Float distance]

If non-zero, light will attenuate linearly from maximum intensity at light *position* down to zero at *distance*.
Default — *0.0*.

### .[page:Boolean castShadow]

If set to *true* light will cast dynamic shadows. *Warning*: This is expensive and requires tweaking to get shadows looking right.
Default — *false*.

### .[page:Boolean onlyShadow]

If set to *true* light will only cast shadow but not contribute any lighting (as if *intensity* was 0 but cheaper to compute).
Default — *false*.

### .[page:Float shadowCameraNear]

Perspective shadow camera frustum near parameter.
Default — *50*.

### .[page:Float shadowCameraFar]

Perspective shadow camera frustum far parameter.
Default — *5000*.

### .[page:Float shadowCameraFov]

Perspective shadow camera frustum field of view parameter.
Default — *50*.

### .[page:Boolean shadowCameraVisible]

Show debug shadow camera frustum.
Default — *false*.

### .[page:Float shadowBias]

Shadow map bias.
Default — *0*.

### .[page:Float shadowDarkness]

Darkness of shadow casted by this light (from *0* to *1*).
Default — *0.5*.

### .[page:Integer shadowMapWidth]

Shadow map texture width in pixels.
Default — *512*.

### .[page:Integer shadowMapHeight]

Shadow map texture height in pixels.
Default — *512*.

### .[page:Float shadowBias]

Shadow map bias.
Default — *0*.

### .[page:Float shadowDarkness]

Darkness of shadow casted by this light (from *0* to *1*).
Default — *0.5*.

### .[page:Integer shadowMapWidth]

Shadow map texture width in pixels.
Default — *512*.

### .[page:Integer shadowMapHeight]

Shadow map texture height in pixels.
Default — *512*.

## Source

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