//----------------------------------------------------------------------------
//  EgalTech 2013-2013
//----------------------------------------------------------------------------
// File : DistPointLine.cpp       Data : 22.12.13          Versione : 1.4l3
// Contenuto : Implementazione dell'oggetto PolyLine.
//
//
//
// Modifiche : 22.12.13 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

//--------------------------- Include ----------------------------------------
#include "stdafx.h"
#include "\EgtDev\Include\EGkPolyLine.h"


//----------------------------------------------------------------------------
PolyLine::PolyLine( void)
{
   m_nCount = 0 ;
   m_iter = m_lUPoints.end() ;
}

//----------------------------------------------------------------------------
PolyLine::~PolyLine( void)
{
}

//----------------------------------------------------------------------------
bool
PolyLine::AddUPoint( double dPar, const Point3d& ptP)
{
   try {
      m_lUPoints.push_back( UPOINT( dPar, ptP)) ;
   }
   catch (...) {
      return false ;
   }

   m_nCount ++ ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::EraseFirstUPoint( void)
{
   if ( m_lUPoints.begin() == m_lUPoints.end())
      return false ;

   m_lUPoints.pop_front() ;
   m_nCount -- ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::AddOffsetToU( double dOffset)
{
   UPNTLIST::iterator iter ;


   for ( iter = m_lUPoints.begin() ; iter != m_lUPoints.end() ; ++ iter)
      iter->first += dOffset ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::Splice( PolyLine& PL)
{
   m_lUPoints.splice( m_lUPoints.end(), PL.m_lUPoints) ;   

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::GetFirstUPoint( double* pdPar, Point3d* pptP)
{
   m_iter = m_lUPoints.begin() ;
   if ( m_iter == m_lUPoints.end())
      return false ;

   if ( pdPar != nullptr)
      *pdPar = m_iter->first ;
   if ( pptP != nullptr)
      *pptP = m_iter->second ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::GetNextUPoint( double* pdPar, Point3d* pptP)
{
   ++ m_iter ;
   if ( m_iter == m_lUPoints.end())
      return false ;

   if ( pdPar != nullptr)
      *pdPar = m_iter->first ;
   if ( pptP != nullptr)
      *pptP = m_iter->second ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::GetLastUPoint( double* pdPar, Point3d* pptP)
{
   if ( m_lUPoints.begin() == m_lUPoints.end())
      return false ;

   if ( pdPar != nullptr)
      *pdPar = m_lUPoints.back().first ;
   if ( pptP != nullptr)
      *pptP = m_lUPoints.back().second ;

   return true ;   
}

//----------------------------------------------------------------------------
bool
PolyLine::GetFirstULine( double* pdIni, Point3d* pptIni, double* pdFin, Point3d* pptFin)
{
  // parametro e punto iniziali
   m_iter = m_lUPoints.begin() ;
   if ( m_iter == m_lUPoints.end())
      return false ;
   if ( pdIni != nullptr)
      *pdIni = m_iter->first ;
   if ( pptIni != nullptr)
      *pptIni = m_iter->second ;

  // parametro e punto finali
   ++ m_iter ;
   if ( m_iter == m_lUPoints.end())
      return false ;
   if ( pdFin != nullptr)
      *pdFin = m_iter->first ;
   if ( pptFin != nullptr)
      *pptFin = m_iter->second ;

   return true ;
}

//----------------------------------------------------------------------------
bool
PolyLine::GetNextULine( double* pdIni, Point3d* pptIni, double* pdFin, Point3d* pptFin)
{
  // parametro e punto iniziali (è il precedente finale)
   if ( m_iter == m_lUPoints.end())
      return false ;
   if ( pdIni != nullptr)
      *pdIni = m_iter->first ;
   if ( pptIni != nullptr)
      *pptIni = m_iter->second ;

  // parametro e punto finali
   ++ m_iter ;
   if ( m_iter == m_lUPoints.end())
      return false ;
   if ( pdFin != nullptr)
      *pdFin = m_iter->first ;
   if ( pptFin != nullptr)
      *pptFin = m_iter->second ;

   return true ;
}