#include <stdlib.h>
#include <stdio.h>
#include "ppm.h"

cpu_fade (ppm_t *image, float f)
{

  int r, c, p;
  unsigned char *t;
  unsigned int vi;

  for (r = 0; r < image->x; r++)
    for (c = 0; c < image->y; c++)
     for (p = 0; p < 3; p++)
     {
       t = image->rgb + (r * image->y  + c) * 3 + p;

       vi = *t;
       vi = vi * f;
       if (vi > 255) vi = 255;

       *t = vi;
    }
}
        
main()
{

  ppm_t *image = ppmread ("Untitled.ppm");

  cpu_fade (image, 2.0);
  ppmwrite ("out.2.0.ppm", image);
  ppmfree (image);
}