📄 threejs/Core/Nodes/SpotLightNode

File: SpotLightNode.md | Updated: 11/15/2025


title: SpotLightNode category: Core layout: docs

SpotLightNode

Module for representing spot lights as nodes.

Constructor

new SpotLightNode( light : SpotLight )

Constructs a new spot light node.

light | The spot light source. Default is null.
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Properties

.colorNode : UniformNode.<Color>

Uniform node representing the light color.

Overrides: AnalyticLightNode#colorNode

.coneCosNode : UniformNode.<float>

Uniform node representing the cone cosine.

.cutoffDistanceNode : UniformNode.<float>

Uniform node representing the cutoff distance.

.decayExponentNode : UniformNode.<float>

Uniform node representing the decay exponent.

.penumbraCosNode : UniformNode.<float>

Uniform node representing the penumbra cosine.

Methods

.getSpotAttenuation( builder : NodeBuilder, angleCosine : Node.<float> ) : Node.<float>

Computes the spot attenuation for the given angle.

builder | The node builder.
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angleCosine | The angle to compute the spot attenuation for.

Returns: The spot attenuation.

.update( frame : NodeFrame )

Overwritten to updated spot light specific uniforms.

frame | A reference to the current node frame.
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Overrides: AnalyticLightNode#update

Source

src/nodes/lighting/SpotLightNode.js