text: import { MathUtils } from '../../../../build/three.module.js';
  import { Node } from './Node.js';
  
  class TempNode extends Node {
  
  	constructor( type, params = {} ) {
  
  		super( type );
  
  		this.shared = params.shared !== undefined ? params.shared : true;
  		this.unique = params.unique !== undefined ? params.unique : false;
  
  	}
  
  	build( builder, output, uuid, ns ) {
  
  		output = output || this.getType( builder );
  
  		if ( this.getShared( builder, output ) ) {
  
  			const isUnique = this.getUnique( builder, output );
  
  			if ( isUnique && this.constructor.uuid === undefined ) {
  
  				this.constructor.uuid = MathUtils.generateUUID();
  
  			}
  
  			uuid = builder.getUuid( uuid || this.getUuid(), ! isUnique );
  
  			const data = builder.getNodeData( uuid ),
  				type = data.output || this.getType( builder );
  
  			if ( builder.analyzing ) {
  
  				if ( ( data.deps || 0 ) > 0 || this.getLabel() ) {
  
  					this.appendDepsNode( builder, data, output );
  
  					return this.generate( builder, output, uuid );
  
  				}
  
  				return super.build( builder, output, uuid );
  
  			} else if ( isUnique ) {
  
  				data.name = data.name || super.build( builder, output, uuid );
  
  				return data.name;
  
  			} else if ( ! this.getLabel() && ( ! this.getShared( builder, type ) || ( builder.context.ignoreCache || data.deps === 1 ) ) ) {
  
  				return super.build( builder, output, uuid );
  
  			}
  
  			uuid = this.getUuid( false );
  
  			let name = this.getTemp( builder, uuid );
  
  			if ( name ) {
  
  				return builder.format( name, type, output );
  
  			} else {
  
  				name = TempNode.prototype.generate.call( this, builder, output, uuid, data.output, ns );
  
  				const code = this.generate( builder, type, uuid );
  
  				builder.addNodeCode( name + ' = ' + code + ';' );
  
  				return builder.format( name, type, output );
  
  			}
  
  		}
  
  		return super.build( builder, output, uuid );
  
  	}
  
  	getShared( builder, output ) {
  
  		return output !== 'sampler2D' && output !== 'samplerCube' && this.shared;
  
  	}
  
  	getUnique( /* builder, output */ ) {
  
  		return this.unique;
  
  	}
  
  	setLabel( name ) {
  
  		this.label = name;
  
  		return this;
  
  	}
  
  	getLabel( /* builder */ ) {
  
  		return this.label;
  
  	}
  
  	getUuid( unique ) {
  
  		let uuid = unique || unique == undefined ? this.constructor.uuid || this.uuid : this.uuid;
  
  		if ( typeof this.scope === 'string' ) uuid = this.scope + '-' + uuid;
  
  		return uuid;
  
  	}
  
  	getTemp( builder, uuid ) {
  
  		uuid = uuid || this.uuid;
  
  		const tempVar = builder.getVars()[ uuid ];
  
  		return tempVar ? tempVar.name : undefined;
  
  	}
  
  	generate( builder, output, uuid, type, ns ) {
  
  		if ( ! this.getShared( builder, output ) ) console.error( 'THREE.TempNode is not shared!' );
  
  		uuid = uuid || this.uuid;
  
  		return builder.getTempVar( uuid, type || this.getType( builder ), ns, this.getLabel() ).name;
  
  	}
  
  }
  
  export { TempNode };
  