Geografic-Information-System/imagery/i.class/complete_reg.c

#include <grass/gis.h>
#include <grass/glocale.h>
#include "globals.h"
#include "local_proto.h"


/* This routine completes the region by adding a line from the last
   point to the first point. */
int complete_region(void)
{
    if (Region.npoints < 3)
	G_warning(_("Too few points for region.  Must have at least 3 points."));
    else if (Region.area.completed)
	G_warning(_("Area already completed."));
    else {
	add_point(Region.point[0].x, Region.point[0].y);
	Region.area.completed = 1;
	save_region();
    }
    Menu_msg("");
    return (0);
}