Chapter 135: PointLightNode

Core Idea

Module for representing point lights as nodes.

Key Concepts

• cutoffDistanceNode : UniformNode.<float>: Uniform node representing the cutoff distance.
• decayExponentNode : UniformNode.<float>: Uniform node representing the decay exponent.

Reference Tables

Constructor

Signature
new PointLightNode( light : PointLight )

Properties

Property	Description
.cutoffDistanceNode : UniformNode.<float>	Uniform node representing the cutoff distance.
.decayExponentNode : UniformNode.<float>	Uniform node representing the decay exponent.

Methods

Method	Description
.setupShadowNode() : PointShadowNode	Overwritten to setup point light specific shadow.
.update( frame : NodeFrame )	Overwritten to updated point light specific uniforms.

Key Takeaways

1. PointLightNode extends: EventDispatcher → Node → LightingNode → AnalyticLightNode
2. Most relevant properties: cutoffDistanceNode, decayExponentNode.
3. Key methods: setupShadowNode, update.

Connects To

• EventDispatcher: parent class
• Node: parent class
• LightingNode: parent class
• AnalyticLightNode: parent class
• Source: src/nodes/lighting/PointLightNode.js