/data/refman/pasoursint/CMSSW_5_2_7_hltpatch2/src/Alignment/CommonAlignmentParametrization/interface/BowedSurfaceAlignmentDerivatives.h

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#ifndef Alignment_CommonAlignmentParametrization_BowedSurfaceAlignmentDerivatives_h
#define Alignment_CommonAlignmentParametrization_BowedSurfaceAlignmentDerivatives_h

#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"


class TrajectoryStateOnSurface;

class BowedSurfaceAlignmentDerivatives 
{
public:
  
  enum AlignmentParameterName {
    dx = 0, dy, dz,
    dslopeX, // NOTE: slope(u) -> k*tan(beta), 
    dslopeY, //       slope(v) -> k*tan(alpha)
    drotZ,   // rotation around w axis, scaled by gammaScale
    dsagittaX, dsagittaXY, dsagittaY,
    N_PARAM
  };

  AlgebraicMatrix operator()(const TrajectoryStateOnSurface &tsos,
                             double uWidth, double vLength,
                             bool doSplit = false, double ySplit = 0.) const;

  static double gammaScale(double width, double splitLength);
};

#endif