PGMWriter.ih

#include <cstdlib>
#include <fstream>
#include "DGtal/io/Color.h"

// IMPLEMENTATION of inline methods.


namespace DGtal {

template<typename I,typename C>
bool
PGMWriter<I,C>::exportPGM(const std::string & filename, const I & aImage,
                          const Functor & aFunctor,  bool saveASCII, bool topbotomOrder)
{
  BOOST_STATIC_ASSERT(I::Domain::dimension == 2);

  ofstream out;
  typename I::Domain::Vector ext = aImage.extent();
  typename I::Domain domain = aImage.domain();
  typename I::Value val;
  
  out.open(filename.c_str());

  //PPM format
  if(saveASCII){
    out << "P2"<<endl;
  }else{
    out << "P5"<<endl;
  }

  out << "#DGtal PNM Writer"<<endl<<endl;
  out << ext[0]<<" "<< ext[1]<<endl;
  out << "255" <<endl;
  
  if(!topbotomOrder){
    //We scan the domain instead of the image becaus we cannot
    //trust the image container Iterator
    for(typename I::Domain::ConstIterator it = domain.begin(), itend=domain.end();
        it!=itend;
        ++it)
      {

        val = aImage( (*it) );
        if(saveASCII){
          out << ((int) aFunctor(val) )<<" ";
        }else{
          out << ((char)((int) aFunctor(val)));
        }
      }
  }else{
    typename I::Domain::Point ptUpper=  domain.upperBound();
    
    for(typename HyperRectDomain<typename I::Domain::Space>::ConstSubRange::ConstReverseIterator itY = domain.subRange(1, ptUpper).rbegin(), itYend=domain.subRange(1, ptUpper).rend();  itY!=itYend; ++itY)
      {    
        typename I::Domain::Point ptUpperY=  *itY;
        
        for(typename HyperRectDomain<typename I::Domain::Space>::ConstSubRange::ConstIterator it = domain.subRange(0, ptUpperY).begin(), itend=domain.subRange(0, ptUpperY).end();
            it!=itend;
            ++it)
          {
            val = aImage( (*it) );
            if(saveASCII){
              out << ((int) aFunctor(val))<<" ";
          }else{
              out << ((char) aFunctor(val));
            }
            
          }
      }
  }
  
  out.close(); 

  return true;
}

template<typename I,typename C>
bool
PGMWriter<I,C>::exportPGM3D(const std::string & filename, const I & aImage,
                            const Functor&aFunctor)
{

  BOOST_STATIC_ASSERT(I::Domain::dimension == 3);

  ofstream out;
  typename I::Domain::Vector ext = aImage.extent();
  typename I::Domain domain(aImage.lowerBound(), aImage.upperBound());
  typename I::Value val;
  Color col;
  
  out.open(filename.c_str());

  //PPM format
  out << "P2-3D"<<endl;
  out << "#DGtal PNM Writer"<<endl<<endl;
  out << ext[0]<<" "<< ext[1]<<" "<< ext[2]<<endl;
  out << "255" <<endl;

  //We scan the domain instead of the image becaus we cannot
  //trust the image container Iterator
  for(typename I::Domain::ConstIterator it = domain.begin(), itend=domain.end();
      it!=itend;
      ++it)
    {

      val = aImage( (*it) );
      out << ((int) aFunctor( val ))<<" ";
    }
  
  out.close(); 

  return true;
}


}//namespace