// -*- Mode: C++ -*-//         RTentry.cpp//// Copyright (c) 1996, Regents of the University of California// $Header: /usr/local/devel/GiST/libGiST/RTree/RTentry.cpp,v 1.1.1.1 1996/08/06 23:47:25 jmh Exp $////  R-Tree Entry Class#include "RT.h"GiSTpenalty * RTentry::Penalty(const GiSTentry &newEntry) const{  GiSTpenalty *retval = new GiSTpenalty;  assert(newEntry.IsA() == RTENTRY_CLASS);    const RTentry& e = (const RTentry &) newEntry;  RTkey *tmpkey = Key().expand(e.Key());  // return area enlargement  *retval = (MAX(tmpkey->area() - e.Key().area(), 0));  delete tmpkey;  return((GiSTpenalty *)retval);}