/*
  This file is part of CDO. CDO is a collection of Operators to
  manipulate and analyse Climate model Data.

  Copyright (C) 2003-2020 Uwe Schulzweida, <uwe.schulzweida AT mpimet.mpg.de>
  See COPYING file for copying and redistribution conditions.

  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.
*/
#ifndef VERIFYGRID_H
#define VERIFYGRID_H

int find_coordinate_to_ignore(double *cell_corners_xyz);
double calculate_the_polygon_area(double cell_corners[], int number_corners);
bool are_polygon_vertices_arranged_in_clockwise_order(double cell_area);
int winding_numbers_algorithm(double cell_corners[], int number_corners, double point[]);

#endif /* VERIFYGRID_H */
