switched to apropriate values

diff --git a/linescan.c b/linescan.c
index 11a2b5f083af653894c26cd5dbc839d5280adebc..889446c0e7f3c77255381ca7a64310a3b1e17ced 100644 (file)
--- a/linescan.c
+++ b/linescan.c
@@ -11,10 +11,13 @@
 #include <stdio.h>
 #include "bmp.h"
 
+#define DX (3)
+
 int main(int argc,char **argv) {
 
   t_bmp bmp;
-  int x,y;
+  int x,y,d;
+  double val;
 
   if(argc!=2) {
     printf("usage: %s <filename>\n",argv[0]);
@@ -27,12 +30,15 @@ int main(int argc,char **argv) {
 
   bmp_read_file(&bmp);
 
-  dprintf(2,"width = %d\n",bmp.info.width);
+  dprintf(2,"width = %d ... delta x = %d.\n",bmp.info.width,DX);
 
   x=bmp.info.width/2;
   for(y=0;y<bmp.info.height;y++) {
-    printf("%f %d\n",1.0*(bmp.info.height/2-y)/(bmp.info.width*3),
-                     (bmp.map[x].r+bmp.map[x].g+bmp.map[x].b)/3);
+    val=0.0;
+    for(d=-DX;d<=DX;d++)
+      val+=(1.0*(bmp.map[x+d].r+bmp.map[x+d].g+bmp.map[x+d].b)/3);
+    printf("%f %f\n",1.0*(bmp.info.height/2-y)/(bmp.info.width*3),val);
+    //printf("%f %f\n",1.0*(bmp.info.height/2-y)/(bmp.info.width),val);
     x+=bmp.info.width;
   }