overlap.c

Go to the documentation of this file.

/*
 ****************************************************************************
 *
 * MODULE:       Vector library 
 *              
 * AUTHOR(S):    Original author CERL, probably Dave Gerdes or Mike Higgins.
 *               Update to GRASS 5.7 Radim Blazek and David D. Gray.
 *
 * PURPOSE:      Higher level functions for reading/writing/manipulating vectors.
 *
 * COPYRIGHT:    (C) 2001 by the GRASS Development Team
 *
 *               This program is free software under the GNU General Public
 *              License (>=v2). Read the file COPYING that comes with GRASS
 *              for details.
 *
 *****************************************************************************/
#include <grass/gis.h>
#include <grass/Vect.h>

int
V__map_overlap(struct Map_info *Map, double n, double s, double e, double w)
{
    struct Cell_head W;

    /* updated for Lat lon support 21 Jun 91 */
    W.north = Map->Constraint_N;
    W.south = Map->Constraint_S;
    W.east = Map->Constraint_E;
    W.west = Map->Constraint_W;
    W.proj = Map->proj;

    return G_window_overlap(&W, n, s, e, w);
}