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PointAverage.h

Go to the documentation of this file.

/*
 * Copyright (C) 2003 Eric Bohm
 *
 *This program is free software; you can redistribute it and/or modify
 *it under the terms of the GNU General Public License as published by
 *the Free Software Foundation version 2 of the License.
 * 
 *This program is distributed in the hope that it will be useful, but
 *WITHOUT ANY WARRANTY; without even the implied warranty of
 *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *General Public License for more details.
 * 
 *You should have received a copy of the GNU General Public License along
 *with this program; if not, write to the Free Software Foundation, Inc.,
 *675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifndef IS_POINTAVG_DEF_SIG
#define IS_POINTAVG_DEF_SIG 1
using namespace std;
#include <functional>
struct PointAverage: public unary_function< Coordinate, void >
{
 public:
  PointAverage():xSum(0),ySum(0),zSum(0),numPoints(0)
    {
    }

  void operator()(Coordinate &p)
    {
      ++numPoints;
      xSum+=p.get_x();
      ySum+=p.get_y();
      zSum+=p.get_z();
    }
  
  Coordinate result()
    {
      return Coordinate(0,xSum/numPoints,ySum/numPoints,zSum/numPoints,0.0,0.0,0.0);
    }
  
 private:
  GLdouble xSum;  
  GLdouble ySum;  
  GLdouble zSum;  
  size_t numPoints; 

};


  
#endif

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