/usr/include/gnuastro/wcs.h is in libgnuastro-dev 0.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Functions to that only use WCSLIB's functions, not related to FITS.
This is part of GNU Astronomy Utilities (Gnuastro) package.
Original author:
Mohammad Akhlaghi <akhlaghi@gnu.org>
Contributing author(s):
Copyright (C) 2015, Free Software Foundation, Inc.
Gnuastro 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 3 of the License, or (at your
option) any later version.
Gnuastro 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 Gnuastro. If not, see <http://www.gnu.org/licenses/>.
**********************************************************************/
#ifndef __GAL_WCS_H__
#define __GAL_WCS_H__
/* Include other headers if necessary here. Note that other header files
must be included before the C++ preparations below */
#include <fitsio.h>
#include <wcslib/wcs.h>
#include <gnuastro/data.h>
/* C++ Preparations */
#undef __BEGIN_C_DECLS
#undef __END_C_DECLS
#ifdef __cplusplus
# define __BEGIN_C_DECLS extern "C" {
# define __END_C_DECLS }
#else
# define __BEGIN_C_DECLS /* empty */
# define __END_C_DECLS /* empty */
#endif
/* End of C++ preparations */
/* Actual header contants (the above were for the Pre-processor). */
__BEGIN_C_DECLS /* From C++ preparations */
/*************************************************************
*********** Read WCS ***********
*************************************************************/
struct wcsprm *
gal_wcs_read_fitsptr(fitsfile *fptr, size_t hstartwcs, size_t hendwcs,
int *nwcs);
struct wcsprm *
gal_wcs_read(char *filename, char *hdu, size_t hstartwcs,
size_t hendwcs, int *nwcs);
/**************************************************************/
/********** Utilities ************/
/**************************************************************/
struct wcsprm *
gal_wcs_copy(struct wcsprm *wcs);
void
gal_wcs_on_tile(gal_data_t *tile);
double *
gal_wcs_warp_matrix(struct wcsprm *wcs);
void
gal_wcs_decompose_pc_cdelt(struct wcsprm *wcs);
double
gal_wcs_angular_distance_deg(double r1, double d1, double r2, double d2);
double *
gal_wcs_pixel_scale(struct wcsprm *wcs);
double
gal_wcs_pixel_area_arcsec2(struct wcsprm *wcs);
/**************************************************************/
/********** Conversion ************/
/**************************************************************/
gal_data_t *
gal_wcs_world_to_img(gal_data_t *coords, struct wcsprm *wcs, int inplace);
gal_data_t *
gal_wcs_img_to_world(gal_data_t *coords, struct wcsprm *wcs, int inplace);
__END_C_DECLS /* From C++ preparations */
#endif /* __GAL_WCS_H__ */
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