BOX3D_combine_BOX3D()

Datum BOX3D_combine_BOX3D

(

PG_FUNCTION_ARGS

)

Definition at line 523 of file lwgeom_box3d.c.

{
        BOX3D *box0 = (BOX3D *)(PG_ARGISNULL(0) ? NULL : PG_GETARG_POINTER(0));
        BOX3D *box1 = (BOX3D *)(PG_ARGISNULL(1) ? NULL : PG_GETARG_POINTER(1));
        BOX3D *result;
 
        if (box0 && !box1)
                PG_RETURN_POINTER(box0);
 
        if (box1 && !box0)
                PG_RETURN_POINTER(box1);
 
        if (!box1 && !box0)
                PG_RETURN_NULL();
 
        result = palloc(sizeof(BOX3D));
        result->xmax = Max(box0->xmax, box1->xmax);
        result->ymax = Max(box0->ymax, box1->ymax);
        result->zmax = Max(box0->zmax, box1->zmax);
        result->xmin = Min(box0->xmin, box1->xmin);
        result->ymin = Min(box0->ymin, box1->ymin);
        result->zmin = Min(box0->zmin, box1->zmin);
        result->srid = box0->srid;
 
        PG_RETURN_POINTER(result);
}

References BOX3D::srid, BOX3D::xmax, BOX3D::xmin, BOX3D::ymax, BOX3D::ymin, BOX3D::zmax, and BOX3D::zmin.