/*
 *  Template program for generating an image 
 *
 */
#include "VisXV4.h"    /* VisionX structure include file       */
#include "Vutil.h"     /* VisionX utility header files         */

VXparam_t par[] =      /* command line structure               */
{
{    "s=",     0, " image size,  vgtemp: create im "},
{    "of=",    0, " output file "},
{     0,       0,    0}
};
#define  SVAL      par[0].val
#define  OUTFILE   par[1].val

int icomp ( VisXimage_t * );

int main(int argc, char** argv)
{
Vfstruct (im);
int i,s;
float bbx[6];

VXparse(&argc, &argv, par);  /* parse the command line         */
  
  for  (i = 0; i<6; i++ ) {  /* set up bounding box */
     bbx[i] = 0.0;
  }
  s = 4;
  if (SVAL) s = atoi (SVAL);
  bbx[1] = bbx[3] = s;

  Vfnewim(&im,  VX_PBYTE, bbx, 1);
  icomp ( &im );
  Vfwrite(&im, OUTFILE);
  exit(0);
}

/* example function ... distance from origin mod 256 */
int icomp ( VisXimage_t *im ) {
int x, y;
    for ( y= im->ylo; y <= im->yhi; y++) {
       for ( x= im->xlo; x <= im->xhi; x++) {
          im->u[y][x] =  sqrt ( x * x + y * y );
       }
    }
    return (1);
}