Chapter 469: SampleNode

Core Idea

Class representing a node that samples a value using a provided callback function.

Key Concepts

• isSampleNode : boolean (readonly): This flag can be used for type testing.
• uvNode : Node.<(vec2|vec3)>: Represents the texture coordinates.
• type : string (readonly): Returns the type of the node.

Reference Tables

Constructor

Signature
new SampleNode( callback : function, uvNode : Node.<vec2> )

Properties

Property	Description
.isSampleNode : boolean (readonly)	This flag can be used for type testing.
`.uvNode : Node.<(vec2	vec3)>`
.type : string (readonly)	Returns the type of the node.

Methods

Method	Description
.sample( uv : Node.<vec2> ) : Node	Calls the callback function with the provided UV node.
.setup() : Node	Sets up the node by sampling with the default UV accessor.

Key Takeaways

1. SampleNode extends: EventDispatcher → Node
2. Most relevant properties: isSampleNode, uvNode, type.
3. Key methods: sample, setup.

Connects To

• EventDispatcher: parent class
• Node: parent class
• Source: src/nodes/utils/SampleNode.js