LWGEOM_SetEffectiveArea()

Datum LWGEOM_SetEffectiveArea

(

PG_FUNCTION_ARGS

)

Definition at line 102 of file lwgeom_functions_analytic.c.

References area(), LWGEOM::bbox, dumpnode::geom, geometry_serialize(), gserialized_get_type(), lwgeom_add_bbox(), lwgeom_free(), lwgeom_from_gserialized(), LWGEOM_line_interpolate_point(), lwgeom_set_effective_area(), MULTIPOINTTYPE, PG_FUNCTION_INFO_V1(), POINTTYPE, and ovdump::type.

Referenced by LWGEOM_simplify2d().

{
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        GSERIALIZED *result;
        int type = gserialized_get_type(geom);
        LWGEOM *in;
        LWGEOM *out;
        double area=0;
        int set_area=0;

        if ( type == POINTTYPE || type == MULTIPOINTTYPE )
                PG_RETURN_POINTER(geom);

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

        if ( (PG_NARGS()>2) && (!PG_ARGISNULL(2)) )
        set_area = PG_GETARG_INT32(2);

        in = lwgeom_from_gserialized(geom);

        out = lwgeom_set_effective_area(in,set_area, area);
        if ( ! out ) PG_RETURN_NULL();

        /* COMPUTE_BBOX TAINTING */
        if ( in->bbox ) 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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