constraint.c

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#include <grass/Vect.h>
#include <grass/gis.h>

int
Vect_set_constraint_region(struct Map_info *Map,
                           double n, double s, double e, double w, double t,
                           double b)
{
    if (n <= s)
        return (-1);
    if (e <= w)
        return (-1);

    Map->Constraint_region_flag = 1;
    Map->Constraint_N = n;
    Map->Constraint_S = s;
    Map->Constraint_E = e;
    Map->Constraint_W = w;
    Map->Constraint_T = t;
    Map->Constraint_B = b;
    Map->proj = G_projection();

    return (0);
}

int Vect_get_constraint_box(struct Map_info *Map, BOUND_BOX * Box)
{
    Box->N = Map->Constraint_N;
    Box->S = Map->Constraint_S;
    Box->E = Map->Constraint_E;
    Box->W = Map->Constraint_W;
    Box->T = Map->Constraint_T;
    Box->B = Map->Constraint_B;

    return 0;
}

int Vect_set_constraint_type(struct Map_info *Map, int type)
{
    Map->Constraint_type = type;
    Map->Constraint_type_flag = 1;

    return 0;
}

int Vect_remove_constraints(struct Map_info *Map)
{
    Map->Constraint_region_flag = 0;
    Map->Constraint_type_flag = 0;

    return 0;
}