docs: private void sort(FastQueue<BrightFeature> input ,
  					  FastQueue<Helper> pos , FastQueue<Helper> neg ) {
  		pos.reset();
  		neg.reset();
  
  		for( int i = 0; i < input.size; i++ ) {
  			BrightFeature f = input.get(i);
  			if( f.white) {
  				pos.grow().wrap(f,i);
  			} else {
  				neg.grow().wrap(f,i);
  			}
  		}
  	}