BOX3D_combine_BOX3D()

Datum BOX3D_combine_BOX3D

(

PG_FUNCTION_ARGS

)

Definition at line 543 of file lwgeom_box3d.c.

References BOX3D_construct(), PG_FUNCTION_INFO_V1(), BOX3D::srid, BOX3D::xmax, BOX3D::xmin, BOX3D::ymax, BOX3D::ymin, BOX3D::zmax, and BOX3D::zmin.

Referenced by BOX3D_combine().

{
        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);
}

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