reconstruction.cpp 6.52 KiB
#include "TStyle.h"
#include "TAxis.h"
#include <fstream>
#include <iostream>
#include "omp.h"
#include "reconstruction.h"
RecoImage::RecoImage(const Setup* config_):
config(config_)
{
counts=0;
createHist();
}
RecoImage::~RecoImage()
{
delete hist;
}
void RecoImage::createHist()
{
hist = new TH2D("ROI", " ; Azimuth (degree); Elevation (degree)",
config->phiBins, -180, 180,
config->thetaBins, -90, 90);
// init image
for (int i = 0; i < config->phiBins; i++)
{
for (int j = 0; j < config->thetaBins; j++)
{
hist->SetBinContent(i+1, j+1, 0);
}
}
gStyle->SetOptStat(0);
hist->GetZaxis()->SetLabelSize(0.02);
hist->Draw("z aitoff");
}
void RecoImage::clear()
{
mMutex.lock();
counts=0;
hist->Reset();
mMutex.unlock();
}
bool RecoImage::saveImage(const std::string& fileName)
{
// qDebug() << "Save as text file";
mMutex.lock();
bool saved=hist2txt(fileName);
mMutex.unlock();
return saved;
}
bool RecoImage::hist2txt(const std::string& fileName)
{
std::ofstream outf(fileName.c_str());
if (!outf.good())
{
return false;
}
outf << " Phi Theta Content\n";
for (int i = 1; i <= hist->GetNbinsX(); i++)
{
for (int j = 1; j <= hist->GetNbinsY(); j++)
{
outf << std::fixed << std::setprecision(2)
<< std::setw(8) << ((TAxis*)hist->GetXaxis())->GetBinCenter(i) << std::setw(8) << ((TAxis*)hist->GetYaxis())->GetBinCenter(j)
<< std::fixed << std::setprecision(8)
<< std::setw(13) << hist->GetBinContent(i,j) << '\n';
}
}
// qDebug() << "Text file saved.";
return true;
}
void RecoImage::updateImage(std::vector<Cone>::const_iterator first,
std::vector<Cone>::const_iterator last,
const bool normalized)
{
if (first==last)
return;
else if (normalized) {
mMutex.lock();
addConesNormalized(first, last);
mMutex.unlock();
}
else {
mMutex.lock();
addCones(first, last);
mMutex.unlock();
}
}
int RecoImage::addCones(std::vector<Cone>::const_iterator first,
std::vector<Cone>::const_iterator last)
{
// project cones onto the spherical surface
double alpha(0);
double beta(0);
double E2(0);
double sgma2(0);
double sgmb2(0);
Vector3D ray;
for (auto k = first; k < last; k++)
{
alpha = k->cosHalfAngle;
// ideal case: inital energy is known
// sgma2 = std::pow(0.511*k->E0/std::pow((k->E0-k->Edpst),2)*config->sgmE, 2);
// realistic case: initial energy = E_1 + E_2
E2 = k->E0 - k->Edpst;
sgma2 = std::pow(k->Edpst/std::pow(k->E0, 2) , 2) + std::pow(1/E2 - E2/std::pow(k->E0, 2) , 2);
sgma2 *= std::pow(config->sgmE * 0.511, 2);
#pragma omp parallel for private(ray, beta, sgmb2) collapse(2)
for (int i = 0; i < config->thetaBins; i++)
{
for (int j = 0; j < config->phiBins; j++)
{
ray = k->apex - config->xbs[i][j];
beta = getCosAngle(ray, k->axis);
sgmb2 = std::pow((ray/(ray*ray) + k->axis/(k->axis*k->axis)-
(ray+k->axis)/(ray*k->axis))*config->sgmpos * beta, 2);
sgmb2+= std::pow((ray/(ray*k->axis)-k->axis/(k->axis*k->axis))*config->sgmpos * beta, 2);
hist->SetBinContent(j+1, i+1,
hist->GetBinContent(j+1, i+1) +
std::exp(-std::pow((std::pow(beta, config->order)-std::pow(alpha, config->order)), 2)/
(2*std::pow(config->order, 2)*
(std::pow(alpha,2*config->order-2)*sgma2 +std::pow(beta, 2*config->order-2)*sgmb2))));
}
}
}
counts += (last - first);
return 0;
}
int RecoImage::addConesNormalized(std::vector<Cone>::const_iterator first,
std::vector<Cone>::const_iterator last){
// project cones onto the spherical surface
double alpha(0);
double beta(0);
double E2(0);
double sgma2(0);
double sgmb2(0);
double summ(0);
Vector3D ray;
static std::vector<std::vector<double>> probDist(config->thetaBins, std::vector<double>(config->phiBins, 0));
for (auto k = first; k < last; k++)
{
counts++;
alpha = k->cosHalfAngle;
// ideal case: inital energy is known
// sgma2 = std::pow(0.511*k->E0/std::pow((k->E0-k->Edpst),2)*config->sgmE, 2);
// realistic case: initial energy = E_1 + E_2
E2 = k->E0 - k->Edpst;
sgma2 = std::pow(k->Edpst/std::pow(k->E0, 2) , 2) + std::pow(1/E2 - E2/std::pow(k->E0, 2) , 2);
sgma2 *= std::pow(config->sgmE * 0.511, 2);
summ = 0;
#pragma omp parallel for private(ray, beta, sgmb2) shared(probDist) reduction(+:summ)
for (int i = 0; i < config->thetaBins; i++)
{
for (int j = 0; j < config->phiBins; j++)
{
// if (i==0&&j==0)
// {
// std::cout << omp_get_num_threads() << '\n';
// }
ray = k->apex - config->xbs[i][j];
beta = getCosAngle(ray, k->axis);
sgmb2 = std::pow((ray/(ray*ray) + k->axis/(k->axis*k->axis)-
(ray+k->axis)/(ray*k->axis))*config->sgmpos * beta, 2);
sgmb2+= std::pow((ray/(ray*k->axis)-k->axis/(k->axis*k->axis))*config->sgmpos * beta, 2);
probDist[i][j] = std::exp(-std::pow((std::pow(beta, config->order)-std::pow(alpha, config->order)), 2)/
(2*std::pow(config->order, 2)*
(std::pow(alpha,2*config->order-2)*sgma2 +std::pow(beta, 2*config->order-2)*sgmb2)));
// use proability density
// uncomment to use integral in the bin
// probDist[i][j] = probDist[i][j] * config->dtheta * config->dphi * std::cos(config->thetaBinCenters[i]);
// summ += probDist[i][j];
summ += probDist[i][j] * config->dtheta * config->dphi * std::cos(config->thetaBinCenters[i]);
}
}
// #pragma omp parallel for
for (int i = 0; i < config->thetaBins; i++)
{
for (int j = 0; j < config->phiBins; j++)
{
hist->SetBinContent(j+1, i+1, (hist->GetBinContent(j+1, i+1)*(counts - 1) + probDist[i][j] / summ) / counts);
}
}
}
return 0;
}