fmi_image_arith.c

 
#include "fmi_image.h"
 
void image_average_horz(FmiImage *source,FmiImage *vert){
  register int i,j;
  int sum;
 
  /* risky? */
  if ((vert->width!=1)||(vert->height!=source->height))
    initialize_vert_stripe(vert,source->height);
 
  /*  for (k=0;k<source->;k++){ */
  for (j=0;j<source->height;j++){
    sum=0;
    for (i=0;i<source->width;i++)
      sum+=get_pixel(source,i,j,0);
    put_pixel_direct(vert,j,sum/source->width);
    /*    put_pixel(vert,0,j,0,sum/source->width); */
    /*
    put_pixel(source,sum/255,j,0,255);
    put_pixel(source,sum/255+1,j,0,0);
    put_pixel(source,sum/255-1,j,0,0);
    */
  }
  
}
 
void image_average_vert(FmiImage *source,FmiImage *vert){
  register int i,j;
  int sum;
 
  /* risky? */
  if ((vert->width!=1)||(vert->height!=source->height))
    initialize_vert_stripe(vert,source->height);
 
  /*  for (k=0;k<source->;k++){ */
  for (j=0;j<source->height;j++){
    sum=0;
    for (i=0;i<source->width;i++)
      sum+=get_pixel(source,i,j,0);
    put_pixel_direct(vert,j,sum/source->width);
  }
}