Chapter 433: MathNode

Core Idea

This node represents a variety of mathematical methods available in shaders. They are divided into three categories:

• Methods with one input like sin, cos or normalize.
• Methods with two inputs like dot, cross or pow.
• Methods with three inputs like mix, clamp or smoothstep.

Key Concepts

• aNode : Node: The first input.
• bNode : Node: The second input.
• cNode : Node: The third input.
• isMathNode : boolean (readonly): This flag can be used for type testing.
• method : string: The method name.

Reference Tables

Constructor

Signature
new MathNode( method : string, aNode : Node, bNode : Node, cNode : Node )

Properties

Property	Description
.aNode : Node	The first input.
.bNode : Node	The second input.
.cNode : Node	The third input.
.isMathNode : boolean (readonly)	This flag can be used for type testing.
.method : string	The method name.

Methods

Method	Description
.generateNodeType( builder : NodeBuilder ) : string	The selected method as well as the input type determine the node type of this node.
.getInputType( builder : NodeBuilder ) : string	The input type is inferred from the node types of the input nodes.

Key Takeaways

1. MathNode extends: EventDispatcher → Node → TempNode
2. Most relevant properties: aNode, bNode, cNode, isMathNode.
3. Key methods: generateNodeType, getInputType.

Connects To

• EventDispatcher: parent class
• Node: parent class
• TempNode: parent class
• Source: src/nodes/math/MathNode.js