lwgeom_clean()

static LWGEOM * lwgeom_clean ( LWGEOM *  lwgeom_in )

static

Definition at line 83 of file postgis/lwgeom_geos_clean.c.

{
        LWGEOM* lwgeom_out;
 
        lwgeom_out = lwgeom_make_valid(lwgeom_in);
        if ( ! lwgeom_out )
        {
                return NULL;
        }
 
        /* Check dimensionality is the same as input */
        if ( lwgeom_dimensionality(lwgeom_in) != lwgeom_dimensionality(lwgeom_out) )
        {
                lwpgnotice("lwgeom_clean: dimensional collapse (%d to %d)",
                         lwgeom_dimensionality(lwgeom_in), lwgeom_dimensionality(lwgeom_out));
 
                return NULL;
        }
 
        /* Check that the output is not a collection if the input wasn't */
        if ( lwgeom_out->type == COLLECTIONTYPE &&
                lwgeom_in->type != COLLECTIONTYPE )
        {
                lwpgnotice("lwgeom_clean: mixed-type output (%s) "
                         "from single-type input (%s)",
                         lwtype_name(lwgeom_out->type),
                         lwtype_name(lwgeom_in->type));
                return NULL;
        }
 
        /* Force right-hand-rule (will only affect polygons) */
        /* gout := ST_ForceRHR(gout); */
 
        /* Remove repeated duplicated points ? */
        /* gout = ST_RemoveRepeatedPoints(gout); */
 
        return lwgeom_out;
}

References COLLECTIONTYPE, lwgeom_dimensionality(), lwgeom_make_valid(), lwtype_name(), and LWGEOM::type.

Referenced by ST_CleanGeometry().

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