//----------------------------------------------------------------------------
//  EgalTech 2014-2014
//----------------------------------------------------------------------------
// File : Angle.cpp           Data : 14.07.14          Versione : 1.5g2
// Contenuto : Implementazione funzioni per gestione angoli.
//
//
//
// Modifiche : 14.07.14 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

//--------------------------- Include ----------------------------------------
#include "stdafx.h"
#include "/EgtDev/Include/EGkAngle.h"
#include "/EgtDev/Include/EGkGeoConst.h"


//----------------------------------------------------------------------------
double
AngleNearAngle( double dAngDeg, double dAngRefDeg)
{
  // devo portare l'angolo entro +/- un angolo piatto dal riferimento
   while ( dAngDeg > dAngRefDeg + ANG_STRAIGHT + EPS_ANG_ZERO)
      dAngDeg -= ANG_FULL ;
   while ( dAngDeg < dAngRefDeg - ANG_STRAIGHT - EPS_ANG_ZERO)
      dAngDeg += ANG_FULL ;
   return dAngDeg ;
}

//----------------------------------------------------------------------------
double
DiffAngle( double dAng1Deg, double dAng2Deg)
{
   double dAng1Near2Deg = AngleNearAngle( dAng1Deg, dAng2Deg) ;

   return ( dAng1Near2Deg - dAng2Deg) ;
}

//----------------------------------------------------------------------------
double
MediaAngle( double dAng1Deg, double dAng2Deg, double dCoeff)
{
   double dAng1Near2Deg = AngleNearAngle( dAng1Deg, dAng2Deg) ;

   return ( dAng1Near2Deg * ( 1 - dCoeff) + dAng2Deg * dCoeff) ;
}

//----------------------------------------------------------------------------
bool
AngleInSpan( double dAngDeg, double dAngRefDeg, double dAngSpanDeg)
{
   double dAngDiffDeg = DiffAngle( dAngDeg, dAngRefDeg) ;

   if ( fabs( dAngSpanDeg) < EPS_ANG_ZERO)
      return ( fabs( dAngDiffDeg) < EPS_ANG_SMALL) ;
   else if ( dAngSpanDeg > 0)
      return ( dAngDiffDeg > - EPS_ANG_SMALL  &&  dAngDiffDeg < dAngSpanDeg + EPS_ANG_SMALL) ;
   else
      return ( dAngDiffDeg < EPS_ANG_SMALL  &&  dAngDiffDeg > dAngSpanDeg - EPS_ANG_SMALL) ;
}