DVector2S.h

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// $Id$
//
//    File: DVector2S.h
// Created: Fri Dec 28 07:19:32 EST 2007
// Creator: davidl (on Darwin Amelia.local 8.10.1 i386)
//

#ifndef _DVector2S_
#define _DVector2S_

#include <JANA/jerror.h>

class DVector2S{
   public:
      DVector2S(){};
      DVector2S(double xx, double yy){x=xx; y=yy;}
      virtual ~DVector2S(){};
      
      inline double X(void) const {return x;}
      inline double Y(void) const {return y;}
      inline void Set(double xx, double yy){x=xx; y=yy;}
      inline double Mod(void){return sqrt(x*x + y*y);}
      inline double Phi(void){return atan2(y,x);}
      inline double Phi2pi(void){double a=atan2(y,x); return a<0.0 ? a+2*M_PI:a;}
      
      inline DVector2S& operator*=(const double &f){x*=f; y*=f; return *(this);}
      inline DVector2S& operator/=(const double &f){x/=f; y/=f; return *(this);}
      inline DVector2S& operator+=(const DVector2S &v){x+=v.X(); y+=v.Y(); return *(this);}
      inline DVector2S& operator-=(const DVector2S &v){x-=v.X(); y-=v.Y(); return *(this);}

   protected:
   
   
   private:
      double x;
      double y;
};

inline DVector2S operator*(const double &f, const DVector2S &vec){
   DVector2S s(f*vec.X(), f*vec.Y());
   return s;
}

inline DVector2S operator*(const DVector2S &vec, const double &f){
   DVector2S s(f*vec.X(), f*vec.Y());
   return s;
}

inline DVector2S operator/(const DVector2S &vec, const double &f){
   DVector2S s(vec.X()/f, vec.Y()/f);
   return s;
}

inline DVector2S operator+(const DVector2S &vec1, const DVector2S &vec2){
   DVector2S s(vec1.X()+vec2.X(), vec1.Y()+vec2.Y());
   return s;
}

inline DVector2S operator-(const DVector2S &vec1, const DVector2S &vec2){
   DVector2S s(vec1.X()-vec2.X(), vec1.Y()-vec2.Y());
   return s;
}


#endif // _DVector2S_