#include <stdlib.h>
#include <grass/gis.h>
#include <grass/Vect.h>
#include "conv.h"
#include "local_proto.h"

double 
ldist (double x, double y, struct Line *p)
{
    int  i;
    double dist, ndist;
    
    i = (p->n_points == 1) ? 0 : 1;		
    dist = dig_distance2_point_to_line(x, y, 0, p->x[0], p->y[0], 0, 
	                                        p->x[i], p->y[i], 0,
						0,
				                NULL, NULL, NULL, NULL, NULL);
    
    for (i=1; i < p->n_points - 1; i++){
        ndist = dig_distance2_point_to_line(x, y, 0, p->x[i], p->y[i], 0,
			                             p->x[i+1], p->y[i+1], 0,
						     0,
				                     NULL, NULL, NULL, NULL, NULL);
	
	if (ndist < dist){
	     dist = ndist;
	}
    }
    return (dist);	
}