NavigationSchool.h

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#ifndef DetLayers_NavigationSchool_H
#define DetLayers_NavigationSchool_H

#include <vector>

#include "NavigableLayer.h"
#include "DetLayer.h"

#include <iostream>
#include <typeinfo>

class NavigationSchool {
public:

  NavigationSchool() : theAllDetLayersInSystem(nullptr){
//    std::cout << "NVSH: C "<< this << std::endl;
  }

  virtual ~NavigationSchool() {}

  typedef std::vector<NavigableLayer*>   StateType;

  virtual StateType navigableLayers() = 0;


  template<typename... Args>
  std::vector<const DetLayer*> 
  nextLayers(const DetLayer & detLayer, Args && ...args) const {
   assert( detLayer.seqNum()>=0);
   auto nl = theAllNavigableLayer[detLayer.seqNum()];
    return nl
      ? nl->nextLayers(std::forward<Args>(args)...)
      : std::vector<const DetLayer*>();
  }
  
  template<typename... Args>
  std::vector<const DetLayer*> 
  compatibleLayers(const DetLayer & detLayer, Args && ...args) const {
    auto nl = theAllNavigableLayer[detLayer.seqNum()];
    return nl
      ? nl->compatibleLayers(std::forward<Args>(args)...)
      : std::vector<const DetLayer*>();
  }

protected:

  void setState( const StateType& state) {
  //  std::cout << "NVSH: set "<< this << ' ' << typeid(*this).name() 
  //          << ' ' << state.size() << ' ' << theAllNavigableLayer.size() << std::endl;

    for (auto nl : state) {
      if (!nl) continue;
      theAllNavigableLayer[nl->detLayer()->seqNum()]=nl;
      nl->setSchool(this);
    }
  }

  // index correspond to seqNum of DetLayers
  StateType theAllNavigableLayer;


  // will be obsoleted together with NAvigationSetter
public:
  const std::vector<const DetLayer*> & allLayersInSystem() const {return *theAllDetLayersInSystem;}
 protected:
  const std::vector<const DetLayer*> * theAllDetLayersInSystem;
};

#endif // NavigationSchool_H