/* $Id: cpl_wcs.h,v 1.9 2008/01/22 16:24:49 scastro Exp $
 *
 * This file is part of the ESO Common Pipeline Library
 * Copyright (C) 2001-2005 European Southern Observatory
 *
 * 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; either version 2 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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * $Author: scastro $
 * $Date: 2008/01/22 16:24:49 $
 * $Revision: 1.9 $
 * $Name:  $
 */


#ifndef CPL_WCS_H
#define CPL_WCS_H

#include "cpl_error.h"
#include "cpl_propertylist.h"
#include "cpl_matrix.h"
#include "cpl_array.h"

/* Definition of WCS structure */

typedef struct _cpl_wcs_ cpl_wcs;

/* Enumerate the modes available for the convert routine */

enum cpl_wcs_trans_mode {
    CPL_WCS_PHYS2WORLD,
    CPL_WCS_WORLD2PHYS,
    CPL_WCS_PHYS2STD,
    CPL_WCS_WORLD2STD};

typedef enum cpl_wcs_trans_mode cpl_wcs_trans_mode;

/* Enumerate the modes available for the plate solution routine */

enum cpl_wcs_platesol_fitmode {
    CPL_WCS_PLATESOL_6,
    CPL_WCS_PLATESOL_4};

typedef enum cpl_wcs_platesol_fitmode cpl_wcs_platesol_fitmode;

enum cpl_wcs_platesol_outmode {
    CPL_WCS_MV_CRVAL,
    CPL_WCS_MV_CRPIX};

typedef enum cpl_wcs_platesol_outmode cpl_wcs_platesol_outmode;

/* Function prototypes */

cpl_wcs *cpl_wcs_new_from_propertylist(const cpl_propertylist *plist);
void cpl_wcs_delete(cpl_wcs *wcs);
cpl_error_code cpl_wcs_convert(const cpl_wcs *wcs, const cpl_matrix *from,
                               cpl_matrix **to, cpl_array **status,
                               cpl_wcs_trans_mode transform);
cpl_error_code cpl_wcs_platesol(cpl_propertylist *ilist, cpl_matrix *cel, 
                                cpl_matrix *xy, int niter, float thresh,
                                cpl_wcs_platesol_fitmode fitmode, 
                                cpl_wcs_platesol_outmode outmode,
                                cpl_propertylist **olist);

#endif /* CPL_WCS_H */