code: function getNextObjectInPool() {
  
  		if ( _objectCount === _objectPoolLength ) {
  
  			var object = new THREE.RenderableObject();
  			_objectPool.push( object );
  			_objectPoolLength ++;
  			_objectCount ++;
  			return object;
  
  		}
  
  		return _objectPool[ _objectCount ++ ];
  
  	}
docs: Pools