Material.h

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#ifndef DDI_Material_h
#define DDI_Material_h

#include <iostream>
#include <vector>
#include <utility>
#include "DetectorDescription/Core/interface/DDMaterial.h"

namespace DDI {

  class Material {
  public:
    Material() {}
    Material(double z, double a, double d) : z_(z), a_(a), density_(d) {}

    Material(double d) : z_(0), a_(0), density_(d) {}
    virtual ~Material() {}
    int noOfConsituents() const;

    double a() const { return a_; }
    double z() const { return z_; }
    double density() const { return density_; }

    double& a() { return a_; }
    double& z() { return z_; }
    double& density() { return density_; }

    int addMaterial(const DDMaterial& m, double fm) {
      composites_.emplace_back(std::make_pair(m, fm));
      return noOfConstituents();
    }

    const DDMaterial::FractionV::value_type& constituent(int i) const { return composites_[i]; }

    DDMaterial::FractionV::value_type& constituent(int i) { return composites_[i]; }

    int noOfConstituents() const { return composites_.size(); }

  protected:
    double z_, a_, density_;
    DDMaterial::FractionV composites_;
  };

}  // namespace DDI
#endif