#include "amma/EntryPnt.hh"
#include "amma/SquareIter.hh"
#include "amma/Filename.hh"
#include "amma/ByteImag.hh"
#include "amma/DP/FileFormatIO.hh"
#include "amma/HSet.hh"
#include <fstream.h>

int Main(int argc, char* argv[])
{
  if (argc != 3) {
    cerr << "Usage: " << argv[0] << "<initial size> <step>" << endl;
    exit(-1);
  } 

  ByteImageC image(512,512);
  IntT initialsize = atoi(argv[1]);
  HSetC<Index2dC> visited;
  IntT size = initialsize;
  IntT sizestep = atoi(argv[2]);
  while ( size <= 511){
    for (SquareIterC it(size, Index2dC(255,255)); it.IsElm(); it.Next()) {
      
      if (!visited.IsMember( it.Data() )) {
	image[ it.Data() ] = 128;
	visited.Insert( it.Data() );
      }
      else image[ it.Data() ] = 255;
    }
    size += sizestep;
  } 

  if (!StdIO::Save("square.pgm", image))
     cerr << "Image saving failed" << endl;

  return 0;


}
AMMA_ENTRY_POINT(Main);