empty_to_wkb_size()

static size_t empty_to_wkb_size ( const LWGEOM *  geom, uint8_t  variant  )

static

Definition at line 291 of file lwout_wkb.c.

{
        /* endian byte + type integer */
        size_t size = WKB_BYTE_SIZE + WKB_INT_SIZE;
 
        /* optional srid integer */
        if ( lwgeom_wkb_needs_srid(geom, variant) )
                size += WKB_INT_SIZE;
 
        /* Represent POINT EMPTY as POINT(NaN NaN) */
        if ( geom->type == POINTTYPE )
        {
                const LWPOINT *pt = (LWPOINT*)geom;
                size += WKB_DOUBLE_SIZE * FLAGS_NDIMS(pt->point->flags);
        }
        /* num-elements */
        else
        {
                size += WKB_INT_SIZE;
        }
 
        return size;
}

References POINTARRAY::flags, FLAGS_NDIMS, lwgeom_wkb_needs_srid(), LWPOINT::point, POINTTYPE, LWGEOM::type, variant, WKB_BYTE_SIZE, WKB_DOUBLE_SIZE, and WKB_INT_SIZE.

Referenced by lwgeom_to_wkb_size(), lwline_to_wkb_size(), lwpoint_to_wkb_size(), lwpoly_to_wkb_size(), and lwtriangle_to_wkb_size().

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