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node_modules/three/examples/jsm/nodes/math/CondNode.js

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+import Node, { addNodeClass } from '../core/Node.js';
+import { property } from '../core/PropertyNode.js';
+import { context as contextNode } from '../core/ContextNode.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+
+class CondNode extends Node {
+
+	constructor( condNode, ifNode, elseNode = null ) {
+
+		super();
+
+		this.condNode = condNode;
+
+		this.ifNode = ifNode;
+		this.elseNode = elseNode;
+
+	}
+
+	getNodeType( builder ) {
+
+		const ifType = this.ifNode.getNodeType( builder );
+
+		if ( this.elseNode !== null ) {
+
+			const elseType = this.elseNode.getNodeType( builder );
+
+			if ( builder.getTypeLength( elseType ) > builder.getTypeLength( ifType ) ) {
+
+				return elseType;
+
+			}
+
+		}
+
+		return ifType;
+
+	}
+
+	generate( builder ) {
+
+		const type = this.getNodeType( builder );
+		const context = { tempWrite: false };
+
+		const { ifNode, elseNode } = this;
+
+		const needsProperty = ifNode.getNodeType( builder ) !== 'void' || ( elseNode && elseNode.getNodeType( builder ) !== 'void' );
+		const nodeProperty = needsProperty ? property( type ).build( builder ) : '';
+
+		const nodeSnippet = contextNode( this.condNode/*, context*/ ).build( builder, 'bool' );
+
+		builder.addFlowCode( `\n${ builder.tab }if ( ${ nodeSnippet } ) {\n\n` ).addFlowTab();
+
+		let ifSnippet = contextNode( this.ifNode, context ).build( builder, type );
+
+		ifSnippet = needsProperty ? nodeProperty + ' = ' + ifSnippet + ';' : ifSnippet;
+
+		builder.removeFlowTab().addFlowCode( builder.tab + '\t' + ifSnippet + '\n\n' + builder.tab + '}' );
+
+		if ( elseNode !== null ) {
+
+			builder.addFlowCode( ' else {\n\n' ).addFlowTab();
+
+			let elseSnippet = contextNode( elseNode, context ).build( builder, type );
+			elseSnippet = nodeProperty ? nodeProperty + ' = ' + elseSnippet + ';' : elseSnippet;
+
+			builder.removeFlowTab().addFlowCode( builder.tab + '\t' + elseSnippet + '\n\n' + builder.tab + '}\n\n' );
+
+		} else {
+
+			builder.addFlowCode( '\n\n' );
+
+		}
+
+		return nodeProperty;
+
+	}
+
+}
+
+export default CondNode;
+
+export const cond = nodeProxy( CondNode );
+
+addNodeElement( 'cond', cond );
+
+addNodeClass( 'CondNode', CondNode );