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/*
* integration_check.c
*
* Check reflection integration
*
* Copyright © 2013 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
* CrystFEL 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.
*
* CrystFEL 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 CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <image.h>
#include <utils.h>
#include <beam-parameters.h>
#include "../libcrystfel/src/integration.c"
int main(int argc, char *argv[])
{
struct image image;
double fsp, ssp, intensity, sigma;
int fs, ss;
FILE *fh;
unsigned int seed;
int fail = 0;
int r, npx;
double ex;
fh = fopen("/dev/urandom", "r");
fread(&seed, sizeof(seed), 1, fh);
fclose(fh);
srand(seed);
image.data = malloc(128*128*sizeof(float));
image.flags = NULL;
image.beam = NULL;
image.lambda = ph_eV_to_lambda(1000.0);
image.det = calloc(1, sizeof(struct detector));
image.det->n_panels = 1;
image.det->panels = calloc(1, sizeof(struct panel));
image.det->panels[0].min_fs = 0;
image.det->panels[0].max_fs = 128;
image.det->panels[0].min_ss = 0;
image.det->panels[0].max_ss = 128;
image.det->panels[0].fsx = 1.0;
image.det->panels[0].fsy = 0.0;
image.det->panels[0].ssx = 0.0;
image.det->panels[0].ssy = 1.0;
image.det->panels[0].xfs = 1.0;
image.det->panels[0].yfs = 0.0;
image.det->panels[0].xss = 0.0;
image.det->panels[0].yss = 1.0;
image.det->panels[0].cnx = -64.0;
image.det->panels[0].cny = -64.0;
image.det->panels[0].clen = 1.0;
image.det->panels[0].res = 1.0;
image.det->panels[0].adu_per_eV = 1.0/1000.0; /* -> 1 adu per photon */
image.det->panels[0].max_adu = +INFINITY; /* No cutoff */
image.width = 128;
image.height = 128;
memset(image.data, 0, 128*128*sizeof(float));
image.n_crystals = 0;
image.crystals = NULL;
/* Uniform peak on uniform background */
npx = 0;
for ( fs=0; fs<image.width; fs++ ) {
for ( ss=0; ss<image.height; ss++ ) {
image.data[fs+image.width*ss] = 1000.0;
if ( (fs-64)*(fs-64) + (ss-64)*(ss-64) > 9*9 ) continue;
image.data[fs+image.width*ss] += 1000.0;
npx++;
}
}
r = integrate_peak(&image, 64, 64, &fsp, &ssp, &intensity, &sigma,
10.0, 15.0, 17.0, NULL, NULL);
if ( r ) {
ERROR(" Fifth check: integrate_peak() returned %i (wrong).\n",
r);
fail = 1;
} else {
STATUS(" Fifth check: intensity = %.2f, sigma = %.2f\n",
intensity, sigma);
ex = npx*1000.0;
if ( within_tolerance(ex, intensity, 1.0) == 0 ) {
ERROR("Intensity should be close to %f\n", ex);
fail = 1;
}
ex = sqrt(npx*1000.0);
if ( within_tolerance(ex, sigma, 1.0) == 0 ) {
ERROR("Sigma should be roughly %f.\n", ex);
fail = 1;
}
}
free(image.beam);
free(image.det->panels);
free(image.det);
free(image.data);
if ( fail ) return 1;
return 0;
}
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