ExpressionNode.js•1.33 kB
import Node from '../core/Node.js';
import { nodeProxy } from '../tsl/TSLCore.js';
/** @module ExpressionNode **/
/**
* This class can be used to implement basic expressions in shader code.
* Basic examples for that are `return`, `continue` or `discard` statements.
*
* @augments Node
*/
class ExpressionNode extends Node {
static get type() {
return 'ExpressionNode';
}
/**
* Constructs a new expression node.
*
* @param {String} [snippet=''] - The native code snippet.
* @param {String} [nodeType='void'] - The node type.
*/
constructor( snippet = '', nodeType = 'void' ) {
super( nodeType );
/**
* The native code snippet.
*
* @type {String}
* @default ''
*/
this.snippet = snippet;
}
generate( builder, output ) {
const type = this.getNodeType( builder );
const snippet = this.snippet;
if ( type === 'void' ) {
builder.addLineFlowCode( snippet, this );
} else {
return builder.format( `( ${ snippet } )`, type, output );
}
}
}
export default ExpressionNode;
/**
* TSL function for creating an expression node.
*
* @function
* @param {String} [snippet=''] - The native code snippet.
* @param {String} [nodeType='void'] - The node type.
* @returns {ExpressionNode}
*/
export const expression = /*@__PURE__*/ nodeProxy( ExpressionNode );