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/* ** Copyright UCAR (c) 1990 - 2016                                         */
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/*
 *   NAME
 *     equidistant_pts
 *
 *   PURPOSE
 *     
 *
 *   NOTES
 *     
 *
 *   HISTORY
 *      wiener - May 8, 1995: Created.
 */

#include <euclid/copyright.h>
#include <euclid/geometry.h>


/*
 * Create equidistant points to or from pt in the direction vect.  If 
 * from != 0 the points are created away from pt.  If from == 0, the points are
 * created going toward pt.  The number of points created is determined
 * by num_pts and the points are stored in array.
 */
void EG_equidistant_pts(Point_d *pt, Point_d *vect, int from, int num_pts, Point_d *array)
{
  int ct;
  int i;

  ct = 0;

  if (from != 0)
    {
      for (i=0; i<num_pts; i++)
        {
          array[ct].x = pt->x + (i * vect->x);
          array[ct].y = pt->y + (i * vect->y);
          ct++;
        }
    }
  else
    for (i=num_pts-1; i>=0; i--)
      {
        array[ct].x = pt->x + (i * vect->x);
        array[ct].y = pt->y + (i * vect->y);
        ct++;
      }
}