CaloEllipse.h

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/*
 * CaloEllipse.h
 *
 *  Created on: 24-Mar-2009
 *      Author: jamie
 */

#ifndef CALOELLIPSE_H_
#define CALOELLIPSE_H_

#include <utility>
#include <vector>
#include <iostream>
#include <string>
#include <sstream>
namespace pftools {

typedef std::pair<double, double> Point;
typedef std::vector<Point> PointVector;
typedef PointVector::const_iterator PointCit;
typedef PointVector::iterator PointIt;

class CaloEllipse {
public:
    CaloEllipse();

    virtual ~CaloEllipse();

    void addPoint(double x, double y) {
        std::pair<double, double> point(x, y);
        dataPoints_.push_back(point);
    }

    void clearPoints() {
        dataPoints_.clear();
    }

    Point getPosition() const;

    Point getMajorMinorAxes(double sigma = 1.0) const;

    double getTheta() const;

    double getEccentricity() const;

    double cachedTheta_;
    double cachedMajor_;
    double cachedMinor_;
    double cachedEccentricity_;

    void makeCaches();

    void resetCaches();

    void reset();


private:
    std::vector<Point> dataPoints_;

};
    std::ostream& operator<<(std::ostream& s, const CaloEllipse& em);
}


#endif /* CALOELLIPSE_H_ */

#ifndef TOSTR_H
#define TOSTR_H
#include <sstream>
#include <iostream>
template <class T> std::string toString(const std::pair<T, T>& aT) {
    std::ostringstream oss;
    oss << "(" << aT.first << ", " << aT.second << ")";
    return oss.str();
}
#endif /*TOSTR_H */