DDFilteredView.h

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#ifndef DETECTOR_DESCRIPTION_DD_FILTERED_VIEW_H
#define DETECTOR_DESCRIPTION_DD_FILTERED_VIEW_H

// -*- C++ -*-
//
// Package:    DetectorDescription/DDFilteredView
// Class:      DDFilteredView
// 
//
// Original Author:  Ianna Osborne
//         Created:  Wed, 30 Jan 2019 09:24:30 GMT
//
//
#include "DetectorDescription/DDCMS/interface/DDSpecParRegistry.h"
#include "DetectorDescription/DDCMS/interface/ExpandedNodes.h"
#include "DetectorDescription/DDCMS/interface/Filter.h"
#include <DD4hep/Volumes.h>
#include <memory>
#include <vector>

namespace cms {

  class DDDetector;

  using Volume = dd4hep::Volume;
  using PlacedVolume = dd4hep::PlacedVolume;
  using ExpandedNodes = cms::ExpandedNodes;
  using Filter = cms::Filter;
  using Iterator = TGeoIterator;
  using Node = TGeoNode;
  
  class DDFilteredView {

  public:
    
    DDFilteredView(const DDDetector*, const Volume);
    DDFilteredView() = delete;
    
    const ExpandedNodes& history() const {
      return nodes_;
    }
    
    const PlacedVolume volume() const;
    
    const Double_t* trans() const;
    
    const Double_t* rot() const;

    void mergedSpecifics(DDSpecParRefs const&);
    
    bool firstChild();

    bool firstSibling();

    bool nextSibling();

    bool sibling();
    bool siblingNoCheck();
    
    bool checkChild();
    
    bool parent();

    bool next(int);

    void down();

    void up();
   
    void unCheckNode();

    std::vector<double> extractParameters() const;

  private:
    
    bool accept(std::string_view);
    bool addPath(Node* const);
    bool addNode(Node* const);
    
    ExpandedNodes nodes_;
    std::vector<Iterator> it_;
    std::vector<std::unique_ptr<Filter>> filters_;
    Filter* currentFilter_ = nullptr;
    Node *node_ = nullptr;
    const DDSpecParRegistry* registry_;
  };
}

#endif