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lcmap.cpp
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#include <stdlib.h>
#include <iostream>
#include <cmath>
#include <vector>
#include <map>
#include <array>
#include "chealpix.h"
#include "healpix_base.h"
#include "metadata.hpp"
#include "background.hpp"
#include "parser.hpp"
// lcmap
using namespace std;
struct background_data
{
int cycle;
double tau;
double a;
};
struct metric_data
{
healpix_header hdr;
float *pixel;
};
struct metric_container
{
std::map<int, metric_data> healpix_data;
background_data cinfo;
char name[4];
char *dir;
char *basename;
void init(background_data &c, char *d, char *b, const char *n)
{
cinfo = c;
strcpy(name, n);
dir = d;
basename = b;
}
void truncate(double min_dist)
{
std::map<int, metric_data>::iterator it;
for (it = healpix_data.begin(); it != healpix_data.end(); it++)
{
if (it->second.hdr.distance >= min_dist)
break;
else
free(it->second.pixel);
}
if (it != healpix_data.begin())
healpix_data.erase(healpix_data.begin(), it);
}
void clear()
{
for (std::map<int, metric_data>::iterator it = healpix_data.begin(); it != healpix_data.end(); it++)
free(it->second.pixel);
healpix_data.clear();
}
};
bool kappa(float *pixel, const int64_t Nside, int64_t ipix, float &result);
int loadHealpixData(metric_container *field, double min_dist, double max_dist, char *lightconeparam = NULL);
float lin_int(float a, float b, float f)
{
return a + (f * (b - a));
}
int main(int argc, char **argv)
{
#ifdef DEBUG
COUT << "Debug mode turned on!\n";
#endif
char *settingsfile = NULL;
char *redshiftparam = NULL;
char outputfile[1024];
char *distanceparam = NULL;
char *lightconeparam = NULL;
parameter *params = NULL;
metadata sim;
cosmology cosmo;
icsettings ic;
int numparam = 0;
int usedparams = 0;
int numoutputs = 0;
char filename0[1024];
char filename1[1024];
char coordsys = 'G';
Healpix_Base2 helper;
pointing ptg;
fix_arr<int64, 4> nnpix;
fix_arr<double, 4> nnwgt;
if (argc < 2)
{
cout << COLORTEXT_WHITE << " LCARS tools: lcmap" << COLORTEXT_RESET << endl;
cout << " extracts local and integrated potential terms from metric light-cone output" << endl
<< endl;
cout << " List of command-line options:" << endl;
cout << " -s <filename> : gevolution settings file of the simulation (mandatory)" << endl;
cout << " -d <distance>[,...] : conformal distance to source field [Mpc/h] (alternative 1)" << endl;
cout << " -z <redshift>[,...] : redshift of source field (alternative 2)" << endl;
cout << " -l <ID1>[,<ID2>,...]: IDs of light cones to be included (optional, must refer" << endl;
cout << " to the same observation event)" << endl;
cout << " The output will be written to HEALPix FITS files that follow the naming conventions" << endl;
cout << " specified in the settings file." << endl;
return 0;
}
for (int i = 1; i < argc; i++)
{
if (argv[i][0] != '-')
continue;
switch (argv[i][1])
{
case 'z':
redshiftparam = argv[++i]; // redshifts for calculation
break;
case 's':
settingsfile = argv[++i]; // settings file name
break;
case 'd':
distanceparam = argv[++i]; // distances for calculation
break;
case 'l':
lightconeparam = argv[++i];
}
}
if (settingsfile == NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": no settings file specified!" << endl;
return -1;
}
cout << COLORTEXT_WHITE << " LCARS tools: lcmap" << endl
<< endl
<< " opening settings file of simulation: " << settingsfile << endl
<< " parser output:" << COLORTEXT_RESET << endl
<< endl;
numparam = loadParameterFile(settingsfile, params);
usedparams = parseMetadata(params, numparam, sim, cosmo, ic);
cout << endl
<< " file contains " << numparam << " parameters, " << usedparams << " of which could be parsed." << endl
<< endl;
cout << " number of lightcones: " << sim.num_lightcone << endl
<< endl;
for (int i = 0; i < sim.num_lightcone; i++)
{
cout << " lightcone " << i << " parameters:" << endl
<< " vertex = " << sim.lightcone[i].vertex[0] << ", " << sim.lightcone[i].vertex[1] << ", " << sim.lightcone[i].vertex[2] << endl;
cout << " redshift of observation = " << sim.lightcone[i].z << endl;
cout << " direction = " << sim.lightcone[i].direction[0] << ", " << sim.lightcone[i].direction[1] << ", " << sim.lightcone[i].direction[2] << endl;
cout << " opening half-angle = " << ((sim.lightcone[i].opening > -1.) ? acos(sim.lightcone[i].opening) * 180. / M_PI : 180.) << " degrees" << endl;
cout << " distance interval = " << sim.lightcone[i].distance[0] << ", " << sim.lightcone[i].distance[1] << endl
<< endl;
}
double tauobs = particleHorizon_old2(1, 1.5 * sim.boxsize * sim.boxsize / C_SPEED_OF_LIGHT / C_SPEED_OF_LIGHT, cosmo);
FILE *background_file;
char *buffer;
int numlines = -2;
snprintf(filename0, SIZPARSTRING, "%s%s_background.dat", sim.output_path, sim.basename_generic);
background_file = fopen(filename0, "r");
#ifdef DEBUG
COUT << "Reading background file\n";
#endif
if (background_file == NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": background file " << filename0 << " cannot be opened!" << endl;
return -1;
}
while (!feof(background_file))
{
if (fscanf(background_file, "%*[^\n]\n") != 0)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error! 1" << endl;
return 0;
}
numlines++;
}
rewind(background_file);
if (fscanf(background_file, "%*[^\n]\n") != 0)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error! 2" << endl;
return 0;
}
if (fscanf(background_file, "%*[^\n]\n") != 0)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error! 3" << endl;
return 0;
}
background_data back[numlines];
#ifdef DEBUG
COUT << "Reached reading: numlines is "<< numlines << endl;
#endif
for (int i = 0; i < numlines; i++)
{
#ifdef DEBUG
COUT << i<<" ";
#endif
#ifdef GW
if (fscanf(background_file, " %i %lf %lf %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s\n",
&back[numlines - 1 - i].cycle, &back[numlines - 1 - i].tau, &back[numlines - 1 - i].a) != 3)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error! " << endl;
return 0;
}
#else
if (fscanf(background_file, " %i %lf %lf %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s\n",
&back[numlines - 1 - i].cycle, &back[numlines - 1 - i].tau, &back[numlines - 1 - i].a) != 3)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error! " << endl;
return 0;
}
#endif
}
fclose(background_file);
#ifdef DEBUG
COUT << "\nFinished reading background file\n";
#endif
double maxredshift = (1. / back[numlines - 1].a) - 1.;
double maxdistance = (tauobs - back[numlines - 1].tau) * sim.boxsize;
;
char *token = NULL;
if (redshiftparam != NULL && distanceparam != NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": please specify EITHER redshift OR distance to source field, not both!" << endl;
return 0;
}
else if (redshiftparam == NULL && distanceparam == NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": please specify redshift (parameter -z) OR distance (parameter -d) to source field!" << endl;
return 0;
}
else if (redshiftparam == NULL && distanceparam != NULL)
{
snprintf(filename0, SIZPARSTRING, "%s", distanceparam);
token = strtok(filename0, ",");
while (token != NULL)
{
numoutputs++;
token = strtok(NULL, ",");
}
}
else if (redshiftparam != NULL && distanceparam == NULL)
{
snprintf(filename0, SIZPARSTRING, "%s", redshiftparam);
token = strtok(filename0, ",");
while (token != NULL)
{
numoutputs++;
token = strtok(NULL, ",");
}
}
#ifdef DEBUG
COUT << "Read distance parameter\n";
#endif
double redshifts[numoutputs];
double distances[numoutputs];
int n = 0;
if (redshiftparam == NULL && distanceparam != NULL)
{
snprintf(filename0, SIZPARSTRING, "%s", distanceparam);
token = strtok(filename0, ",");
while (token != NULL)
{
distances[n] = atof(token);
if (distances[n] > maxdistance)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": distance of " << distances[n] << " Mpc/h is too large, maximum distance is " << maxdistance << " Mpc/h" << endl;
return -1;
}
n++;
token = strtok(NULL, ",");
}
qsort((void *)distances, numoutputs, sizeof(double), [](const void *a, const void *b) -> int
{ return (int)(*((double *)a) > *((double *)b)); });
cout << " distances (Mpc/h) chosen are: ";
for (int i = 0; i < numoutputs; i++)
{
if (i != 0)
cout << ", ";
cout << distances[i];
distances[i] /= sim.boxsize;
}
cout << "." << endl
<< endl;
}
else if (redshiftparam != NULL && distanceparam == NULL)
{
snprintf(filename0, SIZPARSTRING, "%s", redshiftparam);
token = strtok(filename0, ",");
while (token != NULL)
{
redshifts[n] = atof(token);
if (redshifts[n] > maxredshift)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": redshift of " << redshifts[n] << " is too large, maximum redshift is " << maxredshift << endl;
return -1;
}
n++;
token = strtok(NULL, ",");
}
qsort((void *)redshifts, numoutputs, sizeof(double), [](const void *a, const void *b) -> int
{ return (int)(*((double *)a) > *((double *)b)); });
cout << " redshifts chosen are: ";
for (int i = 0; i < numoutputs; i++)
{
distances[i] = tauobs - particleHorizon_old2(1. / (redshifts[i] + 1.), 1.5 * sim.boxsize * sim.boxsize / C_SPEED_OF_LIGHT / C_SPEED_OF_LIGHT, cosmo);
if (i != 0)
cout << ", ";
cout << redshifts[i];
}
cout << "." << endl
<< endl;
}
#ifdef DEBUG
COUT << "Reached field declarations\n";
#endif
metric_container phi0;
metric_container phi1;
phi0.init(back[0], sim.output_path, sim.basename_lightcone, "phi");
phi1.init(back[1], sim.output_path, sim.basename_lightcone, "phi");
float *map_phi_final[numoutputs];
float *map_isw_final = NULL;
float *map_shapiro_final = NULL;
float *map_kappa_final = NULL;
float pot_obs = 0.;
uint32_t Nside_final = 2;
uint32_t Nside_initial = 2;
int64_t Npix_final = 48;
std::vector<int64_t> Npix_interp;
std::vector<int64_t>::iterator itNpix;
int64_t p, q, ipix, jpix, ring, pixoffset = 0;
int step = 0;
int outcnt = 0;
int cnt = 0;
int thresh = 1;
double dist = 0;
double monopole;
double v1[3];
std::map<int, metric_data>::iterator it0;
std::map<int, metric_data>::iterator it1;
cout << COLORTEXT_YELLOW << " processing light-cone output..." << COLORTEXT_RESET << endl
<< endl;
#ifdef DEBUG
COUT << "Reached loop\n";
#endif
while (outcnt < numoutputs)
{
cout << " interpolating cycle number " << COLORTEXT_CYAN << back[step].cycle << COLORTEXT_RESET << " and " << COLORTEXT_CYAN << back[step + 1].cycle << COLORTEXT_RESET << "." << endl
<< " distance interval: " << (tauobs - back[step].tau) * sim.boxsize << " to " << (tauobs - back[step + 1].tau) * sim.boxsize << endl
<< endl;
loadHealpixData(&phi0, tauobs - back[step].tau, tauobs - back[step + 1].tau, lightconeparam);
loadHealpixData(&phi1, tauobs - back[step].tau, tauobs - back[step + 1].tau, lightconeparam);
for (it0 = phi0.healpix_data.begin(); it0 != phi0.healpix_data.end() && it0->second.hdr.distance < tauobs - back[step].tau; it0++)
;
for (it1 = phi1.healpix_data.begin(); it1 != phi1.healpix_data.end() && it1->second.hdr.distance < tauobs - back[step].tau; it1++)
;
if (it0 == phi0.healpix_data.end() || it1 == phi0.healpix_data.end())
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": missing HEALPix data beyond " << dist * sim.boxsize << " Mpc/h!" << endl;
return -1;
}
if (map_isw_final == NULL)
{
Nside_final = it0->second.hdr.Nside;
Nside_initial = Nside_final;
Npix_final = it0->second.hdr.Npix;
for (int m = 0; m < numoutputs; m++)
map_phi_final[m] = (float *)malloc(Nside_final * Nside_final * 12 * sizeof(float));
map_isw_final = (float *)malloc(Nside_final * Nside_final * 12 * sizeof(float));
map_shapiro_final = (float *)malloc(Nside_final * Nside_final * 12 * sizeof(float));
monopole = 0.;
#pragma omp parallel for reduction(+ : monopole)
for (int l = 0; l < it0->second.hdr.Npix; l++)
monopole += lin_int(it0->second.pixel[l], it1->second.pixel[l], (it0->second.hdr.distance - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)));
pot_obs = monopole / it0->second.hdr.Npix;
#pragma omp parallel for
for (int i = 0; i < (Nside_final * Nside_final * 12); i++)
{
for (int m = 0; m < numoutputs; m++)
map_phi_final[m][i] = 0;
map_isw_final[i] = 0;
map_shapiro_final[i] = 0;
}
}
for (; it0->second.hdr.distance < tauobs - back[step + 1].tau && it1->second.hdr.distance < tauobs - back[step + 1].tau && dist < distances[numoutputs - 1]; it0++, it1++)
{
if (it0 == phi0.healpix_data.end() || it1 == phi0.healpix_data.end())
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": missing HEALPix data beyond " << dist * sim.boxsize << " Mpc/h!" << endl;
return -1;
}
if (it0->second.hdr.Nside != Nside_final)
{
cout << COLORTEXT_CYAN << " map resolution change" << COLORTEXT_RESET;
cout << ": from Nside of " << COLORTEXT_WHITE << Nside_final << COLORTEXT_RESET << " to " << COLORTEXT_WHITE << it0->second.hdr.Nside << COLORTEXT_RESET << "." << endl
<< endl;
#pragma omp parallel for
for (long l = Npix_final + pixoffset; l < pixoffset + 12l * Nside_final * Nside_final; l++)
{
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m][l] = -1.6375e30;
map_isw_final[l] = -1.6375e30;
map_shapiro_final[l] = -1.6375e30;
}
Npix_interp.push_back(Npix_final);
Nside_final = it0->second.hdr.Nside;
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m] = (float *)realloc(map_phi_final[m], (16l * Nside_final * Nside_final - 4l * Nside_initial * Nside_initial) * sizeof(float));
map_isw_final = (float *)realloc(map_isw_final, (16l * Nside_final * Nside_final - 4l * Nside_initial * Nside_initial) * sizeof(float));
map_shapiro_final = (float *)realloc(map_shapiro_final, (16l * Nside_final * Nside_final - 4l * Nside_initial * Nside_initial) * sizeof(float));
pixoffset = 4l * (Nside_final * Nside_final - Nside_initial * Nside_initial);
#pragma omp parallel for
for (long l = pixoffset; l < pixoffset + (Nside_final * Nside_final * 12); l++)
{
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m][l] = 0;
map_isw_final[l] = 0;
map_shapiro_final[l] = 0;
}
}
if (it0->second.hdr.distance <= 0)
{
continue;
}
if (it0->second.hdr.distance != it1->second.hdr.distance || it0->second.hdr.Nside != it1->second.hdr.Nside || it0->second.hdr.Npix != it1->second.hdr.Npix)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": map properties do not match on iteration " << cnt << "! distances: " << it0->second.hdr.distance << ", " << it1->second.hdr.distance << "; Nside: " << it0->second.hdr.Nside << ", " << it1->second.hdr.Nside << "; Npix: " << it0->second.hdr.Npix << ", " << it1->second.hdr.Npix << endl
<< endl;
return -1;
}
Npix_final = it0->second.hdr.Npix;
#pragma omp parallel for
for (int l = 0; l < Npix_final; l++)
{
if (map_isw_final[l + pixoffset] < -1.5e29 || map_shapiro_final[l + pixoffset] < -1.5e29)
{
continue;
}
else if (it0->second.pixel[l] < -1.5e29)
{
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m][l + pixoffset] = it0->second.pixel[l];
map_isw_final[l + pixoffset] = it0->second.pixel[l];
map_shapiro_final[l + pixoffset] = it0->second.pixel[l];
}
else if (it1->second.pixel[l] < -1.5e29)
{
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m][l + pixoffset] = it1->second.pixel[l];
map_isw_final[l + pixoffset] = it1->second.pixel[l];
map_shapiro_final[l + pixoffset] = it1->second.pixel[l];
}
else
{
for (int m = outcnt; m < numoutputs; m++)
map_phi_final[m][l + pixoffset] -= 2. * (it0->second.hdr.distance - dist) * ((distances[m] - it0->second.hdr.distance) / (distances[m] * it0->second.hdr.distance)) * lin_int(it0->second.pixel[l], it1->second.pixel[l], (it0->second.hdr.distance - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)));
map_isw_final[l + pixoffset] += 2. * (it0->second.hdr.distance - dist) * (it0->second.pixel[l] - it1->second.pixel[l]) / (back[step].tau - back[step + 1].tau);
map_shapiro_final[l + pixoffset] -= 2. * sim.boxsize * (it0->second.hdr.distance - dist) * lin_int(it0->second.pixel[l], it1->second.pixel[l], (it0->second.hdr.distance - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)));
}
}
if (it0->second.hdr.distance >= distances[outcnt])
{
cout << " source distance reached of " << distances[outcnt] * sim.boxsize << " Mpc/h!" << endl
<< endl;
#pragma omp parallel for
for (long l = Npix_final; l < 12l * Nside_final * Nside_final; l++)
map_phi_final[outcnt][l + pixoffset] = -1.6375e30;
cout << " computing convergence..." << endl
<< endl;
map_kappa_final = (float *)malloc((16l * Nside_final * Nside_final - 4l * Nside_initial * Nside_initial) * sizeof(float));
#pragma omp parallel for
for (long l = 0; l < Npix_final; l++)
{
if (!kappa(map_phi_final[outcnt] + pixoffset, Nside_final, l, map_kappa_final[l + pixoffset]))
map_kappa_final[l + pixoffset] = -1.6375e30;
}
#pragma omp parallel for
for (long l = Npix_final; l < 12l * Nside_final * Nside_final; l++)
map_kappa_final[l + pixoffset] = -1.6375e30;
if (Nside_final > Nside_initial)
{
itNpix = Npix_interp.begin();
for (uint32_t Nside_interp = Nside_initial; Nside_interp < Nside_final; Nside_interp <<= 1)
{
p = 4l * (Nside_interp * Nside_interp - Nside_initial * Nside_initial);
#pragma omp parallel for
for (long l = 0; l < *itNpix; l++)
{
if (!kappa(map_phi_final[outcnt] + p, Nside_interp, l, map_kappa_final[l + p]))
map_kappa_final[l + p] = -1.6375e30;
}
#pragma omp parallel for
for (long l = *itNpix; l < 12l * Nside_interp * Nside_interp; l++)
map_kappa_final[l + p] = -1.6375e30;
itNpix++;
}
for (long l = 0; l < Npix_final; l++)
{
pix2vec_ring64(Nside_final, l, v1);
helper.SetNside(Nside_final, RING);
ptg = helper.pix2ang(l);
for (uint32_t Nside_interp = Nside_initial; Nside_interp < Nside_final; Nside_interp <<= 1)
{
helper.SetNside(Nside_interp, RING);
helper.get_interpol(ptg, nnpix, nnwgt);
p = 4l * (Nside_interp * Nside_interp - Nside_initial * Nside_initial);
for (int nn = 0; nn < nnpix.size(); nn++)
{
if (map_kappa_final[nnpix[nn] + p] > -1e30)
map_kappa_final[l + pixoffset] += map_kappa_final[nnpix[nn] + p] * nnwgt[nn];
else
{
map_kappa_final[l + pixoffset] = -1.6375e30;
break;
}
}
for (int nn = 0; nn < nnpix.size(); nn++)
{
if (map_phi_final[outcnt][nnpix[nn] + p] > -1e30)
map_phi_final[outcnt][l + pixoffset] += map_phi_final[outcnt][nnpix[nn] + p] * nnwgt[nn];
else
{
map_phi_final[outcnt][l + pixoffset] = -1.6375e30;
break;
}
}
}
}
}
if (numoutputs > 1)
snprintf(outputfile, SIZPARSTRING, "%s%s_kappa_%d.fits", sim.output_path, sim.basename_lightcone, outcnt);
else
snprintf(outputfile, SIZPARSTRING, "%s%s_kappa.fits", sim.output_path, sim.basename_lightcone);
write_healpix_map(map_kappa_final + pixoffset, Nside_final, outputfile, 0, &coordsys);
free(map_kappa_final);
if (numoutputs > 1)
snprintf(outputfile, SIZPARSTRING, "%s%s_lensingphi_%d.fits", sim.output_path, sim.basename_lightcone, outcnt);
else
snprintf(outputfile, SIZPARSTRING, "%s%s_lensingphi.fits", sim.output_path, sim.basename_lightcone);
write_healpix_map(map_phi_final[outcnt] + pixoffset, Nside_final, outputfile, 0, &coordsys);
#pragma omp parallel for
for (long l = 0; l < Npix_final; l++)
map_phi_final[outcnt][l + pixoffset] = (map_isw_final[l + pixoffset] < -1.5e29) ? map_isw_final[l + pixoffset] : map_isw_final[l + pixoffset] + 2. * (distances[outcnt] + 0.5 * dist - 1.5 * it0->second.hdr.distance) * (it0->second.pixel[l] - it1->second.pixel[l]) / (back[step].tau - back[step + 1].tau);
if (Nside_final > Nside_initial)
{
for (long l = 0; l < Npix_final; l++)
{
helper.SetNside(Nside_final, RING);
ptg = helper.pix2ang(l);
for (uint32_t Nside_interp = Nside_initial; Nside_interp < Nside_final; Nside_interp <<= 1)
{
helper.SetNside(Nside_interp, RING);
helper.get_interpol(ptg, nnpix, nnwgt);
q = 4l * (Nside_interp * Nside_interp - Nside_initial * Nside_initial);
for (int nn = 0; nn < nnpix.size(); nn++)
{
if (map_isw_final[nnpix[nn] + q] > -1e30)
map_phi_final[outcnt][l + pixoffset] += map_isw_final[nnpix[nn] + q] * nnwgt[nn];
else
{
map_phi_final[outcnt][l + pixoffset] = -1.6375e30;
break;
}
}
}
}
}
if (numoutputs > 1)
snprintf(outputfile, SIZPARSTRING, "%s%s_isw_%d.fits", sim.output_path, sim.basename_lightcone, outcnt);
else
snprintf(outputfile, SIZPARSTRING, "%s%s_isw.fits", sim.output_path, sim.basename_lightcone);
write_healpix_map(map_phi_final[outcnt] + pixoffset, Nside_final, outputfile, 0, &coordsys);
if (it0 == phi0.healpix_data.begin() || it1 == phi1.healpix_data.begin())
{
cout << COLORTEXT_YELLOW << " warning" << COLORTEXT_RESET << ": evaluating potential at boundary of covered range" << endl;
#pragma omp parallel for
for (long l = 0; l < Npix_final; l++)
map_phi_final[outcnt][l + pixoffset] = (map_isw_final[l + pixoffset] < -1.5e29) ? map_isw_final[l + pixoffset] : pot_obs - lin_int(it0->second.pixel[l], it1->second.pixel[l], (distances[outcnt] - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)));
}
else if (std::prev(it0)->second.hdr.Nside != Nside_final)
{
#pragma omp parallel for private(v1, q)
for (long l = 0; l < Npix_final; l++)
{
pix2vec_ring64(Nside_final, l, v1);
vec2pix_ring64(std::prev(it0)->second.hdr.Nside, v1, &q);
map_phi_final[outcnt][l + pixoffset] = (map_isw_final[l + pixoffset] < -1.5e29) ? map_isw_final[l + pixoffset] : pot_obs - ((it0->second.hdr.distance - distances[outcnt]) * lin_int(it0->second.pixel[l], it1->second.pixel[l], (distances[outcnt] - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau))) + (distances[outcnt] - dist) * lin_int(std::prev(it0)->second.pixel[q], std::prev(it1)->second.pixel[q], (distances[outcnt] - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)))) / (it0->second.hdr.distance - dist);
}
}
else
{
#pragma omp parallel for
for (long l = 0; l < Npix_final; l++)
map_phi_final[outcnt][l + pixoffset] = (map_isw_final[l + pixoffset] < -1.5e29) ? map_isw_final[l + pixoffset] : pot_obs - ((it0->second.hdr.distance - distances[outcnt]) * lin_int(it0->second.pixel[l], it1->second.pixel[l], (distances[outcnt] - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau))) + (distances[outcnt] - dist) * lin_int(std::prev(it0)->second.pixel[l], std::prev(it1)->second.pixel[l], (distances[outcnt] - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)))) / (it0->second.hdr.distance - dist);
}
if (numoutputs > 1)
snprintf(outputfile, SIZPARSTRING, "%s%s_potential_%d.fits", sim.output_path, sim.basename_lightcone, outcnt);
else
snprintf(outputfile, SIZPARSTRING, "%s%s_potential.fits", sim.output_path, sim.basename_lightcone);
write_healpix_map(map_phi_final[outcnt] + pixoffset, Nside_final, outputfile, 0, &coordsys);
#pragma omp parallel for
for (long l = 0; l < Npix_final; l++)
map_phi_final[outcnt][l + pixoffset] = (map_shapiro_final[l + pixoffset] < -1.5e29) ? map_shapiro_final[l + pixoffset] : map_shapiro_final[l + pixoffset] - 2. * sim.boxsize * (distances[outcnt] + 0.5 * dist - 1.5 * it0->second.hdr.distance) * lin_int(it0->second.pixel[l], it1->second.pixel[l], (it0->second.hdr.distance - (tauobs - back[step].tau)) / ((back[step].tau - back[step + 1].tau)));
if (Nside_final > Nside_initial)
{
for (long l = 0; l < Npix_final; l++)
{
helper.SetNside(Nside_final, RING);
ptg = helper.pix2ang(l);
for (uint32_t Nside_interp = Nside_initial; Nside_interp < Nside_final; Nside_interp <<= 1)
{
helper.SetNside(Nside_interp, RING);
helper.get_interpol(ptg, nnpix, nnwgt);
q = 4l * (Nside_interp * Nside_interp - Nside_initial * Nside_initial);
for (int nn = 0; nn < nnpix.size(); nn++)
{
if (map_shapiro_final[nnpix[nn] + q] > -1e30)
map_phi_final[outcnt][l + pixoffset] += map_shapiro_final[nnpix[nn] + q] * nnwgt[nn];
else
{
map_phi_final[outcnt][l + pixoffset] = -1.6375e30;
break;
}
}
}
}
}
if (numoutputs > 1)
snprintf(outputfile, SIZPARSTRING, "%s%s_shapiro_%d.fits", sim.output_path, sim.basename_lightcone, outcnt);
else
snprintf(outputfile, SIZPARSTRING, "%s%s_shapiro.fits", sim.output_path, sim.basename_lightcone);
write_healpix_map(map_phi_final[outcnt] + pixoffset, Nside_final, outputfile, 0, &coordsys);
free(map_phi_final[outcnt]);
outcnt++;
}
dist = it0->second.hdr.distance;
if (cnt == thresh && it0->second.hdr.Npix == 12 * it0->second.hdr.Nside * it0->second.hdr.Nside)
{
for (int m = outcnt; m < numoutputs; m++)
{
monopole = 0;
#pragma omp parallel for reduction(+ : monopole)
for (int l = pixoffset; l < pixoffset + it0->second.hdr.Npix; l++)
{
if (map_phi_final[m][l] > -1.5e29)
monopole += map_phi_final[m][l];
}
monopole /= (double)it0->second.hdr.Npix;
#pragma omp parallel for
for (int l = pixoffset; l < pixoffset + it0->second.hdr.Npix; l++)
map_phi_final[m][l] -= monopole;
}
thresh *= 2;
}
cnt++;
}
phi0.clear();
phi1.clear();
step++;
if (step > numlines - 2)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": reached cycle " << back[step].cycle << ", no further integration steps possible!" << endl;
return -1;
}
phi0.cinfo = back[step];
phi1.cinfo = back[step + 1];
}
free(map_isw_final);
free(map_shapiro_final);
cout << COLORTEXT_GREEN << " normal completion." << COLORTEXT_RESET << endl;
return 0;
}
int loadHealpixData(metric_container *field, double min_dist, double max_dist, char *lightconeparam)
{
metric_data metric;
char filename[1024];
char tokens[128];
char *token = NULL;
uint32_t blocksize[2];
FILE *infile = NULL;
FILE *infile2 = NULL;
int count;
long backtrack;
double vec[3];
int64_t j, q;
int ring;
int pixbatch_delim[3];
int pixbatch_size[3] = {0, 0, 0};
metric.pixel = NULL;
if (!field->healpix_data.empty())
{
if (field->healpix_data.begin()->second.hdr.distance < min_dist)
{
if ((min_dist = field->healpix_data.rbegin()->second.hdr.distance) > max_dist)
return field->healpix_data.rbegin()->first;
}
else if (field->healpix_data.begin()->second.hdr.distance > max_dist)
max_dist = field->healpix_data.begin()->second.hdr.distance;
}
if (lightconeparam != NULL)
{
strcpy(tokens, lightconeparam);
token = strtok(tokens, ",");
do
{
snprintf(filename, SIZPARSTRING, "%s%s%d_%04d_%s.map", field->dir, field->basename, atoi(token), field->cinfo.cycle, field->name);
infile = fopen(filename, "rb");
token = strtok(NULL, ",");
} while (infile == NULL && token != NULL);
}
else
{
snprintf(filename, SIZPARSTRING, "%s%s_%04d_%s.map", field->dir, field->basename, field->cinfo.cycle, field->name);
infile = fopen(filename, "rb");
}
if (infile == NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": map file " << filename << " could not be opened for reading!" << endl;
return -1;
}
if (fread(blocksize + 1, sizeof(uint32_t), 1, infile) != 1)
{
fclose(infile);
return -1;
}
for (count = 0; !feof(infile) && !ferror(infile); count++)
{
if (blocksize[1] != 256)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid header block size in map file " << filename << "!" << endl;
return -1;
}
if (fread(&metric.hdr, sizeof(metric.hdr), 1, infile) != 1)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": unable to read header block in map file " << filename << "!" << endl;
return -1;
}
if (fread(blocksize, sizeof(uint32_t), 2, infile) != 2)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid block structure in map file " << filename << "!" << endl;
return -1;
}
if (blocksize[0] != 256)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid header block size in map file " << filename << "!" << endl;
return -1;
}
if (blocksize[1] != metric.hdr.precision * metric.hdr.Npix)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid data block size in map file " << filename << "!" << endl;
return -1;
}
if (metric.hdr.distance > min_dist)
break;
backtrack = ftell(infile) - (256 + 2 * sizeof(uint32_t));
if (infile2 != NULL)
{
fclose(infile2);
infile2 = NULL;
}
if (fseek(infile, blocksize[1], SEEK_CUR))
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": unable to skip data block in map file " << filename << "!" << endl;
fclose(infile);
return -1;
}
if (fread(blocksize, sizeof(uint32_t), 2, infile) != 2)
{
if (token != NULL && feof(infile))
{
infile2 = infile;
snprintf(filename, SIZPARSTRING, "%s%s%d_%04d_%s.map", field->dir, field->basename, atoi(token), field->cinfo.cycle, field->name);
infile = fopen(filename, "rb");
token = strtok(NULL, ",");
if (infile == NULL)
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": map file " << filename << " could not be opened for reading!" << endl;
return -1;
}
if (fread(blocksize + 1, sizeof(uint32_t), 1, infile) != 1)
{
fclose(infile);
return -1;
}
}
else
{
fclose(infile);
return -1;
}
}
}
if (feof(infile) || ferror(infile))
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": read error occured in map file " << filename << "!" << endl;
fclose(infile);
return -1;
}
if (count > 0)
{
if (infile2 != NULL)
{
fclose(infile);
infile = infile2;
}
if (fseek(infile, backtrack, SEEK_SET))
{
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": unable to backtrack in map file " << filename << "!" << endl;
fclose(infile);
return -1;
}
if (fread(&metric.hdr, sizeof(metric.hdr), 1, infile) != 1)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": unable to read header block in map file " << filename << "!" << endl;
return -1;
}
if (fread(blocksize, sizeof(uint32_t), 2, infile) != 2)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid block structure in map file " << filename << "!" << endl;
return -1;
}
if (blocksize[0] != 256)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid header block size in map file " << filename << "!" << endl;
return -1;
}
if (blocksize[1] != metric.hdr.precision * metric.hdr.Npix)
{
fclose(infile);
cout << COLORTEXT_RED << " error" << COLORTEXT_RESET << ": invalid data block size in map file " << filename << "!" << endl;
return -1;
}
count--;
}