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#include <stdio.h>
#include "find_peaks.h"
#include "misc.h"
#include "zebra.h"
#include "zdab_utils.h"
#include <stddef.h> /* for size_t */
#include <unistd.h> /* for exit() */
#include "pmt.h"
#include <math.h> /* for M_PI */
#include <errno.h> /* for errno */
#include <string.h> /* for strerror() */
#define EV_RECORD 0x45562020
#define MCTK_RECORD 0x4d43544b
#define MCVX_RECORD 0x4d435658
void plot_3d(double *x, double *y, double *z, size_t n, size_t m)
{
size_t i, j;
FILE *pipe = popen("gnuplot -p", "w");
if (!pipe) {
fprintf(stderr, "error running gnuplot command: %s\n", strerror(errno));
exit(1);
}
fprintf(pipe, "set title 'Hough Transform'\n");
/* Not entirely sure what these do, but following the instructions from
* http://lowrank.net/gnuplot/plot3d2-e.html. */
fprintf(pipe, "set dgrid3d %zu,%zu\n",n,m);
fprintf(pipe, "set hidden3d\n");
fprintf(pipe, "set contour\n");
fprintf(pipe, "splot '-' u 1:2:3 with lines\n");
for (i = 0; i < n; i++) {
for (j = 0; j < m; j++) {
fprintf(pipe, "%.10g %.10g %.10g\n", x[i], y[j], z[i*m+j]);
}
}
fprintf(pipe,"e\n");
/* Pause so that you can rotate the 3D graph. */
fprintf(pipe,"pause mouse keypress\n");
if (pclose(pipe)) {
fprintf(stderr, "error closing gnuplot command: %s\n", strerror(errno));
exit(1);
}
}
int get_event(zebraFile *f, event *ev, bank *b)
{
/* Read all the PMT banks from the zebra file and update `ev`.
*
* Returns the last return value from get_bank(). */
int i, rv;
PMTBank bpmt;
int id, crate, card, channel;
for (i = 0; i < MAX_PMTS; i++) {
ev->pmt_hits[i].hit = 0;
}
while (1) {
rv = next_bank(f, b);
if (rv == -1) {
break;
} else if (rv == 1) {
/* EOF */
break;
}
switch (b->name) {
case PMT_RECORD:
unpack_pmt(b->data, &bpmt);
card = bpmt.pin/1024;
crate = (bpmt.pin % 1024)/32;
channel = bpmt.pin % 32;
id = crate*512 + card*32 + channel;
ev->pmt_hits[id].hit = 1;
ev->pmt_hits[id].t = bpmt.pt;
ev->pmt_hits[id].qhl = bpmt.phl;
ev->pmt_hits[id].qhs = bpmt.phs;
ev->pmt_hits[id].qlx = bpmt.plx;
ev->pmt_hits[id].flags |= bpmt.pf & KPF_DIS;
break;
case EV_RECORD:
case MAST_RECORD:
goto end;
}
}
end:
return rv;
}
void usage(void)
{
fprintf(stderr,"Usage: ./test-find-peaks [options] FILENAME\n");
fprintf(stderr," --plot plot hough transform\n");
fprintf(stderr," -h display this help message\n");
exit(1);
}
int main(int argc, char **argv)
{
int i;
char *filename = NULL;
zebraFile *f;
bank b;
EVBank bev;
event ev = {0};
int rv;
MCVXBank bmcvx;
double pos[3];
double peak_theta[10];
double peak_phi[10];
size_t npeaks;
int plot = 0;
for (i = 1; i < argc; i++) {
if (strlen(argv[i]) >= 2 && !strncmp(argv[i], "--", 2)) {
if (!strcmp(argv[i]+2,"plot")) {
plot = 1;
continue;
}
} else if (argv[i][0] == '-') {
switch (argv[i][1]) {
case 'h':
usage();
default:
fprintf(stderr, "unrecognized option '%s'\n", argv[i]);
exit(1);
}
} else {
filename = argv[i];
}
}
if (!filename)
usage();
load_pmt_info();
f = zebra_open(filename);
if (!f) {
fprintf(stderr, "%s\n", zebra_err);
return 1;
}
int skip = 0;
while (1) {
if (!skip)
rv = next_bank(f, &b);
skip = 0;
if (rv == -1) {
fprintf(stderr, "error getting bank: %s\n", zebra_err);
goto err;
} else if (rv == 1) {
/* EOF */
break;
}
switch (b.name) {
case MCVX_RECORD:
/* New MC vertex. */
if (b.status & KMCVX_CRE) {
unpack_mcvx(b.data, &bmcvx);
}
break;
case EV_RECORD:
unpack_ev(b.data, &bev);
ev.run = bev.run;
ev.gtid = bev.gtr_id;
rv = get_event(f,&ev,&b);
pos[0] = bmcvx.x;
pos[1] = bmcvx.y;
pos[2] = bmcvx.z;
size_t n = 100;
size_t m = 100;
double *x = calloc(n,sizeof(double));
double *y = calloc(m,sizeof(double));
double *result = calloc(n*m,sizeof(double));
for (i = 0; i < n; i++) {
x[i] = -10 + 20.0*i/(n-1);
}
for (i = 0; i < m; i++) {
y[i] = -10 + 20.0*i/(m-1);
}
get_hough_transform(&ev,pos,x,y,n,m,result);
find_peaks(&ev,pos,n,m,peak_theta,peak_phi,&npeaks,LEN(peak_theta),0.5);
printf("gtid %i\n", ev.gtid);
for (i = 0; i < npeaks; i++) {
printf("%.2f %.2f\n", peak_theta[i], peak_phi[i]);
}
if (plot)
plot_3d(x,y,result,n,m);
/* Skip reading in the next bank since get_event() already read in
* the next bank. */
skip = 1;
}
}
zebra_close(f);
return 0;
err:
zebra_close(f);
return 1;
}
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