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OffsetRadialStripTopology.h

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#ifndef ABS_OFFSET_RADIAL_STRIP_TOPOLOGY_H
#define ABS_OFFSET_RADIAL_STRIP_TOPOLOGY_H

#include "Geometry/CommonTopologies/interface/RadialStripTopology.h"
#include <iosfwd>

class OffsetRadialStripTopology : public RadialStripTopology
{
public:

  OffsetRadialStripTopology( int numberOfStrips, float stripPhiPitch,
     float detectorHeight, float radialDistance, float stripOffset, float yCentre);

  virtual ~OffsetRadialStripTopology(){};

  virtual float stripOffset( void ) const { return theStripOffset; }

  virtual LocalPoint localPosition(float strip) const {
    // Pass through to base class since otherwise it is shadowed by the localPosition(const MP&).
    // Note that base class version is OK because it uses stripAngle() which is overridden in ORST!
    // Also note that xOfStrip from base class RST also works for ORST for the same reason.
    return RadialStripTopology::localPosition( strip );
  }

  virtual LocalPoint localPosition(const MeasurementPoint&) const;

  virtual MeasurementPoint measurementPosition( const LocalPoint& ) const;

  virtual float strip(const LocalPoint&) const;

  float stripAngle(float strip) const;

  virtual int channel(int strip) const = 0;
  virtual int channel(const LocalPoint& lp) const = 0;

  friend std::ostream & operator<<(std::ostream &, const OffsetRadialStripTopology &);

 private:
  LocalPoint toLocal(float xprime, float yprime) const;
  LocalPoint toPrime(const LocalPoint&) const;

  float theStripOffset; // fraction of a strip offset from sym about y
  float theCosOff; // cosine of angular offset
  float theSinOff; // sine of angular offset
};

#endif

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