LWGEOM_simplify2d()

Datum LWGEOM_simplify2d

(

PG_FUNCTION_ARGS

)

Definition at line 66 of file lwgeom_functions_analytic.c.

References LWGEOM::bbox, dumpnode::geom, geometry_serialize(), gserialized_get_type(), lwgeom_add_bbox(), lwgeom_drop_bbox(), lwgeom_free(), lwgeom_from_gserialized(), LWGEOM_SetEffectiveArea(), lwgeom_simplify(), MULTIPOINTTYPE, PG_FUNCTION_INFO_V1(), POINTTYPE, and ovdump::type.

{
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        double dist = PG_GETARG_FLOAT8(1);
        GSERIALIZED *result;
        int type = gserialized_get_type(geom);
        LWGEOM *in, *out;
        bool preserve_collapsed = false;

        /* Handle optional argument to preserve collapsed features */
        if ((PG_NARGS() > 2) && (!PG_ARGISNULL(2)))
                preserve_collapsed = PG_GETARG_BOOL(2);

        /* Can't simplify points! */
        if ( type == POINTTYPE || type == MULTIPOINTTYPE )
                PG_RETURN_POINTER(geom);

        in = lwgeom_from_gserialized(geom);

        out = lwgeom_simplify(in, dist, preserve_collapsed);
        if ( ! out ) PG_RETURN_NULL();

        /* COMPUTE_BBOX TAINTING */
        if (in->bbox)
        {
                lwgeom_drop_bbox(out);
                lwgeom_add_bbox(out);
        }

        result = geometry_serialize(out);
        lwgeom_free(out);
        PG_FREE_IF_COPY(geom, 0);
        PG_RETURN_POINTER(result);
}

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