old_contents: /**
   * @author sunag / http://www.sunag.com.br/
   */
  
  THREE.JoinNode = function( x, y, z, w ) {
  
  	THREE.GLNode.call( this, 'fv1' );
  
  	this.x = x;
  	this.y = y;
  	this.z = z;
  	this.w = w;
  
  };
  
  THREE.JoinNode.prototype = Object.create( THREE.GLNode.prototype );
  THREE.JoinNode.prototype.constructor = THREE.JoinNode;
  
  THREE.JoinNode.inputs = [ 'x', 'y', 'z', 'w' ];
  
  THREE.JoinNode.prototype.getNumElements = function() {
  
  	var inputs = THREE.JoinNode.inputs;
  	var i = inputs.length;
  
  	while ( i -- ) {
  
  		if ( this[ inputs[ i ] ] !== undefined ) {
  
  			++ i;
  			break;
  
  		}
  
  	}
  
  	return Math.max( i, 2 );
  
  };
  
  THREE.JoinNode.prototype.getType = function( builder ) {
  
  	return builder.getFormatByLength( this.getNumElements() );
  
  };
  
  THREE.JoinNode.prototype.generate = function( builder, output ) {
  
  	var material = builder.material;
  
  	var type = this.getType( builder );
  	var length = this.getNumElements();
  
  	var inputs = THREE.JoinNode.inputs;
  	var outputs = [];
  
  	for ( var i = 0; i < length; i ++ ) {
  
  		var elm = this[ inputs[ i ]];
  
  		outputs.push( elm ? elm.build( builder, 'fv1' ) : '0.' );
  
  	}
  
  	var code = builder.getFormatConstructor( length ) + '(' + outputs.join( ',' ) + ')';
  
  	return builder.format( code, type, output );
  
  };
  
new_contents: /**
   * @author sunag / http://www.sunag.com.br/
   */
  
  THREE.JoinNode = function( x, y, z, w ) {
  
  	THREE.TempNode.call( this, 'fv1' );
  
  	this.x = x;
  	this.y = y;
  	this.z = z;
  	this.w = w;
  
  };
  
  THREE.JoinNode.prototype = Object.create( THREE.TempNode.prototype );
  THREE.JoinNode.prototype.constructor = THREE.JoinNode;
  
  THREE.JoinNode.inputs = [ 'x', 'y', 'z', 'w' ];
  
  THREE.JoinNode.prototype.getNumElements = function() {
  
  	var inputs = THREE.JoinNode.inputs;
  	var i = inputs.length;
  
  	while ( i -- ) {
  
  		if ( this[ inputs[ i ] ] !== undefined ) {
  
  			++ i;
  			break;
  
  		}
  
  	}
  
  	return Math.max( i, 2 );
  
  };
  
  THREE.JoinNode.prototype.getType = function( builder ) {
  
  	return builder.getFormatByLength( this.getNumElements() );
  
  };
  
  THREE.JoinNode.prototype.generate = function( builder, output ) {
  
  	var material = builder.material;
  
  	var type = this.getType( builder );
  	var length = this.getNumElements();
  
  	var inputs = THREE.JoinNode.inputs;
  	var outputs = [];
  
  	for ( var i = 0; i < length; i ++ ) {
  
  		var elm = this[ inputs[ i ]];
  
  		outputs.push( elm ? elm.build( builder, 'fv1' ) : '0.' );
  
  	}
  
  	var code = builder.getFormatConstructor( length ) + '(' + outputs.join( ',' ) + ')';
  
  	return builder.format( code, type, output );
  
  };
  
subject: add auto-cache JoinNode