text: var point_pool = (function(){
  	var ob = {
  		newPoint: newPoint,
  		release: release
  	}
  
  	var _length = 0;
  	var _maxLength = 8;
  	var pool = Array.apply(null,{length:_maxLength});
  
  	function newPoint(){
  		var point;
  		if(_length){
  			_length -= 1;
  			point = pool[_length];
  		} else {
  			point = createTypedArray('float32', 2);
  		}
  		return point;
  	}
  
  	function release(point) {
  		if(_length === _maxLength) {
  			pool = pooling.double(pool);
  			_maxLength = _maxLength*2;
  		}
  		pool[_length] = point;
  		_length += 1;
  	}
  
  
  	return ob;
  }());