/*
 * EasyWave - A realtime tsunami simulation program with GPU support.
 * Copyright (C) 2014  Andrey Babeyko, Johannes Spazier
 * GFZ German Research Centre for Geosciences (http://www.gfz-potsdam.de)
 *
 * Parts of this program (especially the GPU extension) were developed
 * within the context of the following publicly funded project:
 * - TRIDEC, EU 7th Framework Programme, Grant Agreement 258723
 *   (http://www.tridec-online.eu)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef ONSPHERE_H
#define ONSPHERE_H

#define Re 6384.e+3          // Earth radius

class cObsArray
{

public:

  int nPos;
  int nObs;
  char **id;
  double *lon;
  double *lat;
  double **obs;

  cObsArray();
  ~cObsArray();
  int read( char *fname );
  int write( char *fname );
  int resetObs();
  int resetObs( int newnobs );
  int findById( char *id0 );
  long writeBin( FILE *fp );
  long readBin( FILE *fp );
  double residual( cObsArray& ref );
  double norm();

};


double GeoDistOnSphere( double lon1, double lat1, double lon2, double lat2 );
double GeoStrikeOnSphere( double lon1, double lat1, double lon2, double lat2 );

#endif  // ONSPHERE_H