source: Sophya/trunk/SigPredictor/abslightsource.h@ 4007

// Dominique YVON, CEA/DAPNIA/SPP 02/2000
// Les coordonnees spheriques utilisees par defaut sont: coordonŽes galactiques J2000

#ifndef AbsLightSource_H
#define AbsLightSource_H

#include <iostream>
#include "unitvector.h"
#include "radspec.h"
#include "lsrcradspec.h"
#include "specresp.h"

#define T_CMBR (2.726)           // Kelvin

class AbsLightSource {
//friend class SigCalcTool;
public:
  AbsLightSource() : QPtSource(false), LScrFSep(false), IsLSrcMappedPower (false)
  {     sprintf(Name, "");
  }
  ~AbsLightSource() {   }

  virtual double powSpecDens(double theta,double phi,double freq)=0;
    // Return power density at coordinates
    // (W/m2/Hz/St)
  LSrcRadSpec getPowerSpec(double theta,double phi);
        // return Object including power spectrum versus frequency in direction theta, phi
        // (W/m2/Hz/St)  
        // Not recommended for intensive use. May Be inefficient or inaccurrate..
        
 //virtual double powerDens(double theta,double phi)=0;
    // Return power Dens at coordinates, integrated over frequency
    // May Require initialisation
    // (Watt/m2/St)
  double LSrcResol() const {
     return resolution;     // constructeur have to initialise res
  }
  inline bool IsQPtSrc() { return QPtSource;} 
  inline bool IsFreqSep() { return LScrFSep;}
  inline bool IsMappedPowerSrc() {return IsLSrcMappedPower;}
        // Optimisation pour calculs avec Lobes separables facon R. Teyssier
  virtual void print(ostream& OutStr) const;
/*  
  virtual void Reset(const SpectralResponse& Filtre) {
        cerr<<"you call reset function when not allowed: program exit"<<endl;
        exit(-1);
        return;
  }
*/
// Make sense only for QuasiPointSource
  virtual UnitVector GetVSrcCenter(); 
  virtual double getAngSize() {
        cerr<<"call for getAngSize in a non Quasipt light source"<<endl;
        exit(-1);
        return 0;
  }
  
// Optimisation for LightSource separable in frequency
  virtual double spectre(double frequence) {
        frequence=0;
        // Return the frequency spectrum independent of coordinates
        cerr<<"call for spectrum in an non separable light source"<<endl;
        exit(-1);
        return 0;
  }
  
  virtual double powerDensAmpli(double theta,double phi) {
        theta=phi; //Pour eviter un warning
        // Return power density Amplidude at coordinates (W/m2/GHz/St) 
        cerr<<"call for powerDensAmpli in an non separable LightSource"<<endl;
        exit(-1);
        return 0;
  }
  static double planckSpectrum(double freq, double Tempe=T_CMBR);
  // W/m2/st/Hz
  static double planckSpecDiff(double DTempe, double freq, double Tempe=T_CMBR);
  // W/m2/St/Hz
protected:
//  bool PtSourceS;  // Is a set of PtSources (Galaxie IR ponctuelles?)
  bool QPtSource;    // Is this a QuasiPointSource. (Sun, Jupiter, Mars et al.)
  bool LScrFSep;         // Are spatial coordinated and frequency separable variables?
  bool IsLSrcMappedPower;       // Is the LSrc a in band map power. Valid only for Lobes separabe in freq.
  double resolution; // Map Pixellisation resolution.;
  char Name[128];
};

#endif