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/*****************************************************************************
** FILE IDENTIFICATION
**
** Name: linogram.cpp
** Purpose: Display linogram sampling
** Programmer: Kevin Rosenberg
** Date Started: April 2003
**
** This is part of the CTSim program
** Copyright (C) 1983-2009 Kevin Rosenberg
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
** published by the Free Software Foundation.
**
** 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
******************************************************************************/
#include "ct.h"
enum { O_XY, O_POLAR_RT, O_VERBOSE, O_HELP, O_VERSION, O_DEBUG };
static struct option my_options[] =
{
{"xy", 0, 0, O_XY},
{"polar-rt", 0, 0, O_POLAR_RT},
{"debug", 0, 0, O_DEBUG},
{"verbose", 0, 0, O_VERBOSE},
{"help", 0, 0, O_HELP},
{"version", 0, 0, O_VERSION},
{0, 0, 0, 0}
};
static const char* g_szIdStr = "$Id$";
void
linogram_usage (const char *program)
{
std::cout << "usage: " << fileBasename(program) << " n d [OPTIONS]\n";
std::cout << "Imagefile information\n";
std::cout << std::endl;
std::cout << " n Linogram N\n";
std::cout << " d Max detector spacing\n";
std::cout << " --xy Output x,y pairs\n";
std::cout << " --polar-rt Output r,t pairs\n";
std::cout << " --debug Debug mode\n";
std::cout << " --verbose Verbose mode\n";
std::cout << " --version Print version\n";
std::cout << " --help Print this help message\n";
}
int
linogram_main (int argc, char *const argv[])
{
int opt_polar_rt = 0;
int opt_xy = 0;
int opt_verbose = 0;
int opt_debug = 0;
UNUSED(opt_verbose);
UNUSED(opt_debug);
while (1)
{
int c = getopt_long (argc, argv, "", my_options, NULL);
if (c == -1)
break;
switch (c)
{
case O_XY:
opt_xy = 1;
break;
case O_POLAR_RT:
opt_polar_rt = 1;
break;
case O_VERBOSE:
opt_verbose = 1;
break;
case O_DEBUG:
opt_debug = 0;
break;
case O_VERSION:
#ifdef VERSION
std::cout << "Version " << VERSION << std::endl << g_szIdStr << std::endl;
#else
std::cout << "Unknown version number\n";
#endif
return (0);
case O_HELP:
case '?':
linogram_usage(argv[0]);
return (0);
default:
linogram_usage(argv[0]);
return (1);
}
}
if (optind + 2 != argc) {
linogram_usage (argv[0]);
return (1);
}
const char* in_n = argv[optind];
const char* in_d = argv[optind+1];
int n = atol (in_n);
double d = atof (in_d);
int size = 4 * n + 3;
int max = 2 * n + 1;
int min = -max;
double theta_base = PI/4;
// theta_base = 0;
double theta_vec [size];
for (int i = 0; i < size; i++) {
int m = i - (2 * n + 1);
theta_vec[i] = atan (static_cast<double>(2 * m) / size);
}
if (opt_xy) {
int m;
for (m = 0; m < size; m++) {
double step = d * cos(theta_vec[m]);
for (int id = min; id <= max; id++) {
double r = id * step;
double x = r * cos(theta_vec[m] + theta_base);
double y = r * sin(theta_vec[m] + theta_base);
printf ("%lf,%lf ", x, y);
}
printf ("\n");
}
for (m = 0; m < size; m++) {
double step = d * cos(theta_vec[m]);
for (int id = min; id <= max; id++) {
double r = id * step;
double x = r * cos(theta_vec[m] + PI/2 + theta_base);
double y = r * sin(theta_vec[m] + PI/2 + theta_base);
printf ("%lf,%lf ", x, y);
}
printf ("\n");
}
} else {
int m;
for (m = 0; m < size; m++) {
if (! opt_polar_rt)
printf ("%lf: ", theta_vec[m] + theta_base);
double step = d * cos(theta_vec[m]);
for (int id = min; id <= max; id++) {
if (opt_polar_rt)
printf ("%lf,", theta_vec[m] + theta_base);
printf ("%lf ", id * step);
}
printf ("\n");
}
for (m = 0; m < size; m++) {
if (! opt_polar_rt)
printf ("%lf: ", theta_vec[m] + PI/2 + theta_base);
double step = d * cos(theta_vec[m]);
for (int id = min; id <= max; id++) {
if (opt_polar_rt)
printf ("%lf,", theta_vec[m] + PI/2 + theta_base);
printf ("%lf ", id * step);
}
printf ("\n");
}
}
return (0);
}
#ifndef NO_MAIN
int
main (int argc, char *const argv[])
{
int retval = 1;
try {
retval = linogram_main(argc, argv);
} catch (exception e) {
std::cerr << "Exception: " << e.what() << std::endl;
} catch (...) {
std::cerr << "Unknown exception\n";
}
return (retval);
}
#endif
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