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// $Id: pyRandomize.cc,v 1.4 2006/06/29 15:33:42 gunter Exp $
// $Name: geant4-09-04-beta-01 $
// ====================================================================
//   pyRandomize.cc
//
//                                         2005 Q
// ====================================================================
#include <boost/python.hpp>
#include "Randomize.hh"
#include <vector>

using namespace boost::python;
using namespace CLHEP;

// ====================================================================
// thin wrappers
// ====================================================================
namespace pyRandomize {

// problem with BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS for static method
// setTheSeed
void f1_setTheSeed(long seed)
{
  HepRandom::setTheSeed(seed);
}

void f2_setTheSeed(long seed, int lux)
{
  HepRandom::setTheSeed(seed, lux);
}

// setTheSeeds
void f1_setTheSeeds(const list& seedList)
{  
  // check size...
  int idx=0;
  while(1) {
    long val= extract<long>(seedList[idx]);
    if(val==0) break;
    idx++;
  }
  int nsize= idx+1;
  
  long* seedArray= new long[nsize]; // should not be deleted!! 
                                    // (this is a problem with CLHEP.)
  for (int i=0; i< nsize; i++) {
    seedArray[i]= extract<long>(seedList[i]);
  }

  HepRandom::setTheSeeds(seedArray);
}

void f2_setTheSeeds(const list& seedList, int aux)
{
  // check size...
  int idx=0;
  while(1) {
    long val= extract<long>(seedList[idx]);
    if(val==0) break;
    idx++;
  }
  int nsize= idx+1;

  long* seedArray= new long[nsize];
  for (int i=0; i< nsize; i++) {
    seedArray[i]= extract<long>(seedList[i]);
  }

  HepRandom::setTheSeeds(seedArray, aux);
}

// getTheSeeds
list f_getTheSeeds()
{
  list seedList;
  const long* seeds= HepRandom::getTheSeeds();
  int idx=0;
  while(1) {
    if( seeds[idx]==0) break;
    seedList.append(seeds[idx]);
    idx++;
  }
  return seedList;
}

// getTheTableSeeds
list f_getTheTableSeeds(int index)
{
  long seedPair[2];
  HepRandom::getTheTableSeeds(seedPair, index);

  list seedList;
  seedList.append(seedPair[0]);
  seedList.append(seedPair[1]);

  return seedList;
}


// saveEngineStatus
void f1_saveEngineStatus()
{
  HepRandom::saveEngineStatus();
}

void f2_saveEngineStatus(const char* filename)
{
  HepRandom::saveEngineStatus(filename);
}

// restoreEngineStatus
void f1_restoreEngineStatus()
{
  HepRandom::restoreEngineStatus();
}

void f2_restoreEngineStatus(const char* filename)
{
  HepRandom::restoreEngineStatus(filename);
}

// RandBit::shootBit
int f1_RandBit_shootBit()
{
  return RandBit::shootBit();
}

// RandGaussQ::shoot
double f1_RandGaussQ_shoot()
{
  return RandGaussQ::shoot();
}

double f2_RandGaussQ_shoot(double mean, double stdDev)
{
  return RandGaussQ::shoot(mean, stdDev);
}


// G4UniformRand
double f_G4UniformRand()
{
  return G4UniformRand();
}

};

using namespace pyRandomize;

// ====================================================================
// module definition
// ====================================================================
void export_Randomize()
{
  class_<HepRandom>("HepRandom", "generate random number")
    // ---
    .def(init<long>())
    .def(init<HepRandomEngine&>())
    .def(init<HepRandomEngine*>())
    // ---
    .def("setTheSeed",       f1_setTheSeed)
    .def("setTheSeed",       f2_setTheSeed)
    .staticmethod("setTheSeed")
    .def("getTheSeed",           &HepRandom::getTheSeed)
    .staticmethod("getTheSeed")
    .def("setTheSeeds",      f1_setTheSeeds)
    .def("setTheSeeds",      f2_setTheSeeds)
    .staticmethod("setTheSeeds")
    .def("getTheSeeds",      f_getTheSeeds)
    .staticmethod("getTheSeeds")
    .def("getTheTableSeeds", f_getTheTableSeeds)
    .staticmethod("getTheTableSeeds")
    // ---
    .def("getTheGenerator",     &HepRandom::getTheGenerator,
         return_value_policy<reference_existing_object>())
    .staticmethod("getTheGenerator")
    .def("setTheEngine",        &HepRandom::setTheEngine)
    .staticmethod("setTheEngine")
    .def("getTheEngine",        &HepRandom::getTheEngine,
         return_value_policy<reference_existing_object>())
    .staticmethod("getTheEngine")
    .def("saveEngineStatus",    f1_saveEngineStatus)
    .def("saveEngineStatus",    f2_saveEngineStatus)
    .staticmethod("saveEngineStatus")
    .def("restoreEngineStatus", f1_restoreEngineStatus)
    .def("restoreEngineStatus", f2_restoreEngineStatus)
    .staticmethod("restoreEngineStatus")
    .def("showEngineStatus",    &HepRandom::showEngineStatus)
    .staticmethod("showEngineStatus")
    .def("createInstance",      &HepRandom::createInstance)
    .staticmethod("createInstance")
    ;
  
  // ---
  class_<RandBit, boost::noncopyable>
    ("RandBit", "generate bit random number", no_init)
    .def("shootBit", f1_RandBit_shootBit)
    .staticmethod("shootBit")
    ;

  // ---
  class_<G4RandGauss, boost::noncopyable>
    ("G4RandGauss", "generate gaussian random number", no_init)
    .def("shoot", f1_RandGaussQ_shoot)
    .def("shoot", f2_RandGaussQ_shoot)
    .staticmethod("shoot")
    ;
    
  // ---
  def("G4UniformRand", f_G4UniformRand);

}