Subdetector.h

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/*
 * Subdetector.h
 *
 * Basic reconstruction interface for generic subdetectors
 *
 *  Created on: Apr 3, 2014
 *      Author: Christian Grefe, CERN
 */

#ifndef SUBDETECTOR_H_
#define SUBDETECTOR_H_

#include "DD4hep/Detector.h"
#include "DDRec/Extensions/SubdetectorExtension.h"

namespace DD4hep {
namespace DDRec {

class Subdetector: public virtual Geometry::DetElement {
public:
        Subdetector(const Geometry::DetElement& det) :
                Geometry::DetElement(det) {
                getSubdetectorExtension();
        }

        virtual ~Subdetector() {
                // does not own the extension!
        }

        bool isBarrel() const {
                return _subdetector->isBarrel();
        }

        bool isEndcap() const {
                return _subdetector->isEndcap();
        }

        double getRMin() const {
                return _subdetector->getRMin();
        }

        double getRMax() const {
                return _subdetector->getRMax();
        }

        double getZMin() const {
                return _subdetector->getZMin();
        }

        double getZMax() const {
                return _subdetector->getZMax();
        }

        /* Describes the number of corners for a polygon.
         * Returns 0 in case of a circular shape
         */
        int getNSides() const {
                return _subdetector->getNSides();
        }

protected:
        SubdetectorExtension* _subdetector;

private:
        void getSubdetectorExtension() {
                _subdetector = this->isValid() ? this->extension<SubdetectorExtension>() : 0;
                if (not _subdetector) {
                        throw invalid_detector_element("Found no extension of type \"SubdetectorExtension\"", Geometry::DetElement(*this));
                }
        }
};

} /* namespace DDRec */
} /* namespace DD4hep */

#endif /* SUBDETECTOR_H_ */