/*****************************************************************/
/*    NAME: Michael Benjamin                                     */
/*    ORGN: Dept of Mechanical Eng / CSAIL, MIT Cambridge MA     */
/*    FILE: XYHexGrid.cpp                                        */
/*    DATE: Oct 30th 2005                                        */
/*                                                               */
/* This file is part of IvP Helm Core Libs                       */
/*                                                               */
/* IvP Helm Core Libs is free software: you can redistribute it  */
/* and/or modify it under the terms of the Lesser GNU General    */
/* Public License as published by the Free Software Foundation,  */
/* either version 3 of the License, or (at your option) any      */
/* later version.                                                */
/*                                                               */
/* IvP Helm Core Libs 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 Lesser GNU General Public License for more   */
/* details.                                                      */
/*                                                               */
/* You should have received a copy of the Lesser GNU General     */
/* Public License along with MOOS-IvP.  If not, see              */
/* <http://www.gnu.org/licenses/>.                               */
/*****************************************************************/

#include <cmath>
#include <cstdlib>
#include "XYHexGrid.h"
#include "MBUtils.h"
#include "XYFormatUtilsPoly.h"

using namespace std;

//-------------------------------------------------------------
// Procedure: getElement

XYHexagon XYHexGrid::getElement(unsigned int ix) const
{
  XYHexagon retElement;
  
  if(ix < elements.size())
    return(elements[ix]);
  else
    return(retElement);
}

//-------------------------------------------------------------
// Procedure: initialize
//      Note: An alternative way of initializing convenient
//            for reading a specification from a file.

bool XYHexGrid::initialize(string given_config_str)
{
  // If initialization fails, elements vector will be empty
  this->clear();

  vector<string> svector = parseString(given_config_str, '@');
  int vsize = svector.size();
  if((vsize != 2) && (vsize != 3))
    return(false);
  
  string poly_string = svector[0];
  string unit_string = svector[1];
  //double initial_val = 0.0;

  //if(vsize == 3)
  //  initial_val = atof(svector[2].c_str());

  XYPolygon poly = string2Poly(poly_string);
  if(poly.size() == 0)
    return(false);
  
  // Label of poly will also be label of this searchgrid.
  string poly_label = poly.get_label();
  if(poly_label == "") {
    //cout << "Un-labeled searchgrid specification" << endl;
    return(false);
  }

  unit_string = stripBlankEnds(unit_string);
  svector = parseString(unit_string, ',');
  vsize = svector.size();
  if(vsize != 2)
    return(false);

  double xl = 0;
  double xh = atof(svector[0].c_str());
  double yl = 0;
  double yh = atof(svector[1].c_str());
  XYSquare unit_square(xl,xh,yl,yh);
  // Check for the validity of the square
  if(!unit_square.valid())
    return(false);

  bool ok = initialize(poly, unit_square);

  if(ok) {
    config_string = given_config_str;
    label = poly_label;
  }

  return(ok);
}

//-------------------------------------------------------------
// Procedure: initialize

bool XYHexGrid::initialize(XYPolygon poly,
			   const XYSquare&  unit_square)
{
  return(true);
}