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#include <TStyle.h>
#include <TCanvas.h>
#include <TH1.h>
#include <TF1.h>
#include "THcPShowerCalib.h"
//
// A steering Root script for the SHMS calorimeter calibration.
//
void pcal_calib(string RunNumber) {
// Initialize the analysis clock
clock_t t = clock();
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cout << "Calibrating run " << RunNumber << endl;
THcPShowerCalib theShowerCalib(RunNumber);
theShowerCalib.Init(); // Initialize constants and variables
theShowerCalib.CalcThresholds(); // Thresholds on the uncalibrated Edep/P
theShowerCalib.ComposeVMs(); // Compute vectors amd matrices for calib.
theShowerCalib.SolveAlphas(); // Solve for the calibration constants
theShowerCalib.SaveAlphas(); // Save the constants
//theShowerCalib.SaveRawData(); // Save raw data into file for debug purposes
theShowerCalib.FillHEcal(); // Fill histograms
// Plot histograms
TCanvas* Canvas =
new TCanvas("Canvas", "PHMS Shower Counter calibration", 1000, 667);
Canvas->Divide(2,2);
Canvas->cd(1);
// Normalized uncalibrated energy deposition.
theShowerCalib.hEunc->DrawCopy();
theShowerCalib.hEuncSel->SetFillColor(kGreen);
theShowerCalib.hEuncSel->DrawCopy("same");
Canvas->cd(2);
theShowerCalib.hESHvsEPR->Draw();
// Normalized energy deposition after calibration.
Canvas->cd(3);
gStyle->SetOptFit();
theShowerCalib.hEcal->Fit("gaus","","",0.9,1.1);
theShowerCalib.hEcal->GetFunction("gaus")->SetLineColor(2);
theShowerCalib.hEcal->GetFunction("gaus")->SetLineWidth(1);
theShowerCalib.hEcal->GetFunction("gaus")->SetLineStyle(1);
// SHMS delta(P) versus the calibrated energy deposition.
Canvas->cd(4);
theShowerCalib.hDPvsEcal->Draw();
// Calculate the analysis rate
t = clock() - t;
printf ("The analysis took %.1f seconds \n", ((float) t) / CLOCKS_PER_SEC);