#include <iostream>
#include "EasyBMP.h"
#include <fstream>
using namespace std;

int main( int argc, char* argv[] )
{

 BMP Background, Foreground;
 Background.ReadFromFile(argv[1]);
 Foreground.ReadFromFile(argv[2]);

 BMP Output;
 int w2, h2, w1, h1;
 w2 = Background.TellWidth();
 h2 = Background.TellHeight();
 w1 = Foreground.TellWidth();
 h1 = Foreground.TellHeight();

 Output.SetSize( w2, h2 );
 Output.SetBitDepth( 24 );

 RangedPixelToPixelCopy( Background, 0, w2-1,
                         h2-1 , 0,
                         Output, 0,0 );

 for (int i = 0; i < w1; ++i)
  for (int j = 0; j < h1; ++j) {
   int clr = 1;
   if (Foreground(i,j)->Blue < 50 && Foreground(i,j)->Red < 50 &&
         Foreground(i,j)->Green < 50) clr = 0;
   if (clr == 0) {
      Output(w2 - w1 + i,j)->Blue = Foreground(i,j)->Blue;
      Output(w2 - w1 + i,j)->Red = Foreground(i,j)->Red;
      Output(w2 - w1 + i,j)->Green = Foreground(i,j)->Green;
     }
  };

  Output.WriteToFile(argv[3]);

 return 0;
}