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/* $Id: irplib_wcs-test.c,v 1.9 2013-01-29 08:43:33 jtaylor Exp $
*
* This file is part of the ESO Common Pipeline Library
* Copyright (C) 2001-2008 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., 51 Franklin St, Fifth Floor, Boston, MA 02111-1307 USA
*/
/*
* $Author: jtaylor $
* $Date: 2013-01-29 08:43:33 $
* $Revision: 1.9 $
* $Name: not supported by cvs2svn $
*/
/*-----------------------------------------------------------------------------
Includes
-----------------------------------------------------------------------------*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <cpl_test.h>
#include "irplib_wcs.h"
#include "math.h"
/*-----------------------------------------------------------------------------
Static functions
-----------------------------------------------------------------------------*/
static void irplib_wcs_all_test(void);
static void irplib_wcs_mjd_test(void);
static void irplib_wcs_great_circle_dist_test(void);
/*-----------------------------------------------------------------------------
Main
-----------------------------------------------------------------------------*/
int main (void)
{
cpl_test_init(PACKAGE_BUGREPORT, CPL_MSG_WARNING);
irplib_wcs_all_test();
irplib_wcs_mjd_test();
irplib_wcs_great_circle_dist_test();
return cpl_test_end(0);
}
/*----------------------------------------------------------------------------*/
/**
@internal
@brief Test the WCS functions
@return void
*/
/*----------------------------------------------------------------------------*/
static void irplib_wcs_all_test(void)
{
const double xorig = 1.0;
const double yorig = 2.0;
double xnew,ynew;
double ra, dec;
cpl_propertylist * prop_wcs;
cpl_wcs * wcs = NULL;
cpl_error_code error;
/* Create WCS object */
prop_wcs = cpl_propertylist_new();
cpl_test_nonnull(prop_wcs);
cpl_propertylist_append_double(prop_wcs, "CRVAL1", 10.);
cpl_propertylist_append_double(prop_wcs, "CRVAL2", 20.);
cpl_propertylist_append_int(prop_wcs, "CRPIX1", 1);
cpl_propertylist_append_int(prop_wcs, "CRPIX2", 2);
cpl_propertylist_append_double(prop_wcs, "CD1_1", 10.);
cpl_propertylist_append_double(prop_wcs, "CD1_2", 11.);
cpl_propertylist_append_double(prop_wcs, "CD2_1", 13.);
cpl_propertylist_append_double(prop_wcs, "CD2_2", 14.);
cpl_test_error(CPL_ERROR_NONE);
wcs = cpl_wcs_new_from_propertylist(prop_wcs);
cpl_propertylist_delete(prop_wcs);
if (cpl_error_get_code() == CPL_ERROR_NO_WCS) {
cpl_msg_warning(cpl_func, "No WCS present. Tests disabled");
cpl_test_error(CPL_ERROR_NO_WCS);
cpl_test_null(wcs);
} else {
cpl_test_nonnull(wcs);
/* Test that a simple call to xytoradec does not fail*/
error = irplib_wcs_xytoradec(wcs, xorig, yorig, &ra, &dec);
cpl_test_eq_error(error, CPL_ERROR_NONE);
/* Get the transformation back and compare */
error = irplib_wcs_radectoxy(wcs, ra, dec, &xnew, &ynew);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(xnew, xorig, 2.0 * DBL_EPSILON);
cpl_test_abs(ynew, yorig, 2.0 * DBL_EPSILON);
/* Error testing */
error = irplib_wcs_xytoradec(wcs, xorig, yorig, NULL, &dec);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_radectoxy(wcs, ra, dec, NULL, &ynew);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_xytoradec(wcs, xorig, yorig, &ra, NULL);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_radectoxy(wcs, ra, dec, &xnew, NULL);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
cpl_wcs_delete(wcs);
}
/* Error testing */
error = irplib_wcs_xytoradec(NULL, xorig, yorig, &ra, &dec);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_radectoxy(NULL, ra, dec, &xnew, &ynew);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
}
/*----------------------------------------------------------------------------*/
/**
@internal
@brief Test the MJD functions
@return void
*/
/*----------------------------------------------------------------------------*/
static void irplib_wcs_mjd_test(void)
{
/* Matching example from some VLT header */
const char * iso8601 = "2010-07-13T23:24:39.284";
const double mjd = 55390.97545467;
/* Two equal dates */
const char * iso8601a = "2010-07-13T24:00:00";
const char * iso8601b = "2010-07-14T00:00:00.000";
const double mstol = 1e-3/86400.0; /* 1ms tolerance in MJD */
int year, day, month, hour, minute;
double second;
double tmjd, tmjd2;
cpl_error_code error;
/* The MJD counts the number of days since November 17, 1858 */
/* Test 1a: Conversion of MJD == 0 */
error = irplib_wcs_iso8601_from_mjd(&year, &month, &day, &hour,
&minute, &second, 0.0);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_eq(year, 1858);
cpl_test_eq(month, 11);
cpl_test_eq(day, 17);
cpl_test_eq(hour, 0);
cpl_test_eq(minute, 0);
cpl_test_abs(second, 0.0, 2.0 * DBL_EPSILON);
/* Test 1b: - and convert back */
error = irplib_wcs_mjd_from_iso8601(&tmjd, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(tmjd, 0.0, 2.0 * DBL_EPSILON);
/* Test 2: Conversion back and forth of some recent date */
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NONE);
error = irplib_wcs_mjd_from_iso8601(&tmjd, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(mjd, tmjd, mstol);
error = irplib_wcs_mjd_from_string(&tmjd, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(mjd, tmjd, mstol);
error = irplib_wcs_iso8601_from_mjd(&year, &month, &day, &hour,
&minute, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NONE);
error = irplib_wcs_mjd_from_iso8601(&tmjd, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(mjd, tmjd, 2.0 * DBL_EPSILON);
/* Test 3: 24:00:00 == 00.00.00 + 1 day */
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second, iso8601a);
cpl_test_eq_error(error, CPL_ERROR_NONE);
error = irplib_wcs_mjd_from_iso8601(&tmjd, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NONE);
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second, iso8601b);
cpl_test_eq_error(error, CPL_ERROR_NONE);
error = irplib_wcs_mjd_from_iso8601(&tmjd2, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NONE);
cpl_test_abs(tmjd, tmjd2, 2.0 * DBL_EPSILON);
/* Test 4: Do not allow days from y10k */
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second,
"10000-07-13T23:24:39.284");
cpl_test_eq_error(error, CPL_ERROR_ILLEGAL_INPUT);
/* Test 5: Verify validation of length of a non-leap year month */
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second,
"2010-02-29T23:24:39.284");
cpl_test_eq_error(error, CPL_ERROR_ILLEGAL_INPUT);
/* Test 6: NULL pointer checking */
error = irplib_wcs_mjd_from_iso8601(NULL, year, month, day, hour, minute,
second);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(NULL, &month, &day, &hour,
&minute, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, NULL, &day, &hour,
&minute, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, &month, NULL, &hour,
&minute, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, &month, &day, NULL,
&minute, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
NULL, &second, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, NULL, iso8601);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_string(&year, &month, &day, &hour,
&minute, &second, NULL);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(NULL, &month, &day, &hour,
&minute, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(&year, NULL, &day, &hour,
&minute, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(&year, &month, NULL, &hour,
&minute, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(&year, &month, &day, NULL,
&minute, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(&year, &month, &day, &hour,
NULL, &second, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
error = irplib_wcs_iso8601_from_mjd(&year, &month, &day, &hour,
&minute, NULL, mjd);
cpl_test_eq_error(error, CPL_ERROR_NULL_INPUT);
}
/*----------------------------------------------------------------------------*/
/**
@internal
@brief Test the function, using trivial cases
@return void
*/
/*----------------------------------------------------------------------------*/
static void irplib_wcs_great_circle_dist_test(void)
{
double dist1, dist2;
/* Commutative */
dist1 = irplib_wcs_great_circle_dist(12.0, 34.0, 56.0, 78.0);
dist2 = irplib_wcs_great_circle_dist(56.0, 78.0, 12.0, 34.0);
cpl_test_abs(dist1, dist2, 0.0);
for (int j = 0; j <= 360; j += 4) {
const double ra2 = CPL_MATH_E + (double)j;
for (int i = 0; i < 180; i++) {
const double ra1 = (double)i;
const double dec1 = (double)i;
/* Poles Apart */
dist1 = irplib_wcs_great_circle_dist(ra2, 90.0, ra2 + ra1, -90.0);
cpl_test_abs(dist1, 180.0, 0.0);
/* Equatorial */
dist1 = irplib_wcs_great_circle_dist(ra2, 0.0, ra2 + ra1, 0.0);
cpl_test_abs(dist1, ra1, 2560.0 * DBL_EPSILON);
/* "I will go on the slightest errand now to the Antipodes..." */
dist1 = irplib_wcs_great_circle_dist(ra2, dec1, ra2 + 180.0, -dec1);
cpl_test_abs(dist1, 180.0, 30.0 * FLT_EPSILON);
}
/* Meridional */
for (int i = -90; i <= 90; i += 3) {
const double dec1 = (double)i;
for (int k = 0; k <= 90; k += 3) {
const double dec2 = (double)k;
dist1 = irplib_wcs_great_circle_dist(ra2, dec1, ra2, dec2);
cpl_test_abs(dist1, fabs(dec1 - dec2), 1024.0 * DBL_EPSILON);
}
dist1 = irplib_wcs_great_circle_dist(ra2, dec1, ra2 + 180.0,
90.0 - dec1);
cpl_test_abs(dist1, 90.0, 512.0 * DBL_EPSILON);
}
}
}
|
