PPMWriter.ih

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

// IMPLEMENTATION of inline methods.


namespace DGtal {

  template<typename I,typename C>
  bool
  PPMWriter<I,C>::exportPPM(const std::string & filename, const I & aImage,
                            const Functor & aFunctor, 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;
    DGtal::Color col;
    out.open(filename.c_str());

    //PPM format
    out << "P3"<<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) );
            col = aFunctor( val );
            out << (int)col.red()<<" "<<(int)col.green()<<" "<<(int)col.blue()<<" ";
          }
      }
    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) );
                col = aFunctor( val );
                out << (int)col.red()<<" "<<(int)col.green()<<" "<<(int)col.blue()<<" ";            
              }
          }
      }
    
    out.close(); 
  
    return true;
  }
  
  template<typename I,typename C>
bool
PPMWriter<I,C>::exportPPM3D(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;
  DGtal::Color col;
  
  out.open(filename.c_str());
  
  //PPM format
  out << "P3-3D"<<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) );
      col = aFunctor( val );
      out << (int)col.red()<<" "<<(int)col.green()<<" "<<(int)col.blue()<<" ";  }
  
  out.close(); 
  
  return true;
}


}//namespace