ZetaPixel.h

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#ifndef _ZetaPixel_h_
#define _ZetaPixel_h_
#include <vector>
#include <utl/TabulatedFunction.h>

namespace FdEnergyDepositFinderKG {

  class ZetaPixel {

  public:

    ZetaPixel(const unsigned int pixelId,
              const double xPos, const double yPos,
              const double sideLength,
              const double tiltAngle=0.);

    bool IsInside(const double x, double y) const;

    std::vector<double> CircleIntersections(const double circleX,
                                            const double circleY,
                                            const double circleRadius) const;

    double CalculateInsideArcLength(const double circleX,
                                    const double circleY,
                                    const double circleRadius) const;


    const std::vector<double>& GetXCoordinates() const
    { return fXCoordinates; }
    const std::vector<double>& GetYCoordinates() const
    { return fYCoordinates; }

    double GetCenterX() const { return fCenterX;}
    double GetCenterY() const { return fCenterY;}

    const utl::TabulatedFunction& GetArcLengthFunction() const { return fArcLengthFunction; }
    mutable utl::TabulatedFunction fArcLengthFunction;
    mutable double fLightFraction;
    unsigned int fPixelId;

  private:
    ZetaPixel();
    void CalculateCoordinates();
    double fCenterX;
    double fCenterY;
    double fSideLength;
    double fTiltAngle;
    double fCosTiltAngle;
    double fSinTiltAngle;

    /*

              1
              +
             / \
            /   \
           /     \
          /       \
       2 +         + 0/6     -----
         |         |           ^
         |         |           |
         |    +    |           sideLength
         |         |           |
         |         |           v
       3 +         + 5       -----
          \       /
           \     /
            \   /
             \ /
              +
              4
 y ^
   |
   |
   +--->
       x

    */

    std::vector<double> fXCoordinates;
    std::vector<double> fYCoordinates;

  };
}
#endif