ST_RemoveRepeatedPoints()

Datum ST_RemoveRepeatedPoints

(

PG_FUNCTION_ARGS

)

Definition at line 2631 of file lwgeom_functions_basic.c.

References LWGEOM::bbox, geometry_serialize(), gserialized_get_type(), lwgeom_add_bbox(), lwgeom_drop_bbox(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_remove_repeated_points(), PG_FUNCTION_INFO_V1(), POINTTYPE, ST_FlipCoordinates(), and ovdump::type.

Referenced by ST_CollectionHomogenize().

{
        GSERIALIZED *g_in = PG_GETARG_GSERIALIZED_P(0);
        int type = gserialized_get_type(g_in);
        GSERIALIZED *g_out;
        LWGEOM *lwgeom_in = NULL;
        LWGEOM *lwgeom_out = NULL;
        double tolerance = 0.0;

        /* Don't even start to think about points */
        if ( type == POINTTYPE )
                PG_RETURN_POINTER(g_in);

        if ( PG_NARGS() > 1 && ! PG_ARGISNULL(1) )
                tolerance = PG_GETARG_FLOAT8(1);

        lwgeom_in = lwgeom_from_gserialized(g_in);
        lwgeom_out = lwgeom_remove_repeated_points(lwgeom_in, tolerance);

        /* COMPUTE_BBOX TAINTING */
        if (lwgeom_in->bbox)
        {
                lwgeom_drop_bbox(lwgeom_out);
                lwgeom_add_bbox(lwgeom_out);
        }

        g_out = geometry_serialize(lwgeom_out);

        if ( lwgeom_out != lwgeom_in )
        {
                lwgeom_free(lwgeom_out);
        }

        lwgeom_free(lwgeom_in);

        PG_FREE_IF_COPY(g_in, 0);
        PG_RETURN_POINTER(g_out);
}

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