lwmulti_to_twkb_buf()

static int lwmulti_to_twkb_buf ( const LWCOLLECTION *  col, TWKB_GLOBALS *  globals, TWKB_STATE *  ts  )

static

Definition at line 283 of file lwout_twkb.c.

References bytebuffer_append_uvarint(), bytebuffer_append_varint(), TWKB_STATE::geom_buf, LWCOLLECTION::geoms, TWKB_STATE::idlist, LWDEBUGF, lwgeom_is_empty(), lwgeom_to_twkb_buf(), MULTIPOINTTYPE, LWCOLLECTION::ngeoms, and LWCOLLECTION::type.

Referenced by lwgeom_to_twkb_buf().

{
        int i;
        int nempty = 0;

        LWDEBUGF(2, "Entered %s", __func__);
        LWDEBUGF(4, "Number of geometries in multi is %d", col->ngeoms);

        /* Deal with special case for MULTIPOINT: skip any empty points */
        if ( col->type == MULTIPOINTTYPE )
        {
                for ( i = 0; i < col->ngeoms; i++ )
                        if ( lwgeom_is_empty(col->geoms[i]) )
                                nempty++;
        }

        /* Set the number of geometries */
        bytebuffer_append_uvarint(ts->geom_buf, (uint64_t) (col->ngeoms - nempty));

        /* We've been handed an idlist, so write it in */
        if ( ts->idlist )
        {
                for ( i = 0; i < col->ngeoms; i++ )
                {
                        /* Skip empty points in multipoints, we can't represent them */
                        if ( col->type == MULTIPOINTTYPE && lwgeom_is_empty(col->geoms[i]) )
                                continue;

                        bytebuffer_append_varint(ts->geom_buf, ts->idlist[i]);
                }

                /* Empty it out to nobody else uses it now */
                ts->idlist = NULL;
        }

        for ( i = 0; i < col->ngeoms; i++ )
        {
                /* Skip empty points in multipoints, we can't represent them */
                if ( col->type == MULTIPOINTTYPE && lwgeom_is_empty(col->geoms[i]) )
                        continue;

                lwgeom_to_twkb_buf(col->geoms[i], globals, ts);
        }
        return 0;
}

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