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/* *
* This file is part of the ESO IRPLIB package *
* Copyright (C) 2004,2005 European Southern Observatory *
* *
* This library 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, 51 Franklin St, Fifth Floor, Boston, MA 02111-1307 USA *
* */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/*----------------------------------------------------------------------------
Includes
----------------------------------------------------------------------------*/
#include <irplib_hist.h>
#include <math.h>
/*---------------------------------------------------------------------------*/
/*
* @defgroup irplib_hist_test Testing of the IRPLIB utilities
*/
/*---------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
Defines
----------------------------------------------------------------------------*/
#define NBINS 100
/*----------------------------------------------------------------------------
Private Function prototypes
----------------------------------------------------------------------------*/
static void irplib_hist_tests(void);
/*---------------------------------------------------------------------------*/
/*
* @brief Unit tests of fit module
*/
/*---------------------------------------------------------------------------*/
int main(void)
{
/* Initialize CPL + IRPLIB */
cpl_test_init(PACKAGE_BUGREPORT, CPL_MSG_WARNING);
irplib_hist_tests();
return cpl_test_end(0);
}
static void irplib_hist_tests(void)
{
irplib_hist * hist;
cpl_image * image;
cpl_error_code error;
int i, j;
float * data;
unsigned long max_where;
/* 1. trial: Create a right histogram */
hist = irplib_hist_new();
cpl_test_nonnull(hist);
cpl_test_error(CPL_ERROR_NONE);
irplib_hist_delete(hist);
/* 3. trial: Histogram for a uniform image */
image = cpl_image_new(100, 100, CPL_TYPE_FLOAT);
cpl_image_add_scalar(image, 202);
hist = irplib_hist_new();
error = irplib_hist_init(hist, NBINS, 0, 500);
cpl_test_zero(error);
error = irplib_hist_fill(hist, image);
cpl_test_zero(error);
for(i = 0; i < 40; i++) {
cpl_test_zero(irplib_hist_get_value(hist, i));
}
/* The following call retrieves the value of the 42-st bin */
/* When i = 41, 42-th is retrieved. 500 - 0 / 100 = 5; 202/5=40,xx
it should be in the 41-th bin but it is in the next one because
there is one before left empty for possible values out of range
0 (hinit) < 202 (image constant)
*/
cpl_test_eq(irplib_hist_get_value(hist, 40), 10000);
for(i = 42; i < NBINS; i++) {
cpl_test_zero(irplib_hist_get_value(hist, i));
}
irplib_hist_delete(hist);
cpl_image_delete(image);
/* 4. trial: Histogram for a normal image: no checking of the output */
image = cpl_image_new(100, 100, CPL_TYPE_FLOAT);
cpl_image_fill_noise_uniform(image, 0, 200);
hist = irplib_hist_new();
error = irplib_hist_fill(hist,image);
cpl_test_zero(error);
irplib_hist_delete(hist);
cpl_image_delete(image);
/* 5. trial: Histogram */
image = cpl_image_new(100, 100, CPL_TYPE_FLOAT);
data = cpl_image_get_data_float(image);
for (i = 0; i < 100; i++) {
for (j = 0; j < 100; j++) {
*(data + 100*i + j) = i +j;
}
}
hist = irplib_hist_new();
error = irplib_hist_fill(hist, image);
cpl_test_eq_error(error, CPL_ERROR_NONE);
irplib_hist_get_max(hist, &max_where);
/* The following call retrieves the value of the 41-st bin */
/* cpl_test_eq(irplib_hist_get_value(hist, 40), 10000);
for(i = 42; i < NBINS; i++) {
cpl_test_zero(irplib_hist_get_value(hist, i));
}*/
/* 6. trial: all by default ( we use the same image) */
cpl_test_eq(max_where, irplib_hist_get_nbins(hist)/2);
irplib_hist_delete(hist);
cpl_image_delete(image);
}
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