lwpoly_to_kml2_sb()

static int lwpoly_to_kml2_sb ( const LWPOLY *  poly, int  precision, const char *  prefix, stringbuffer_t *  sb  )

static

Definition at line 150 of file lwout_kml.c.

References LW_FAILURE, LW_SUCCESS, LWPOLY::nrings, ptarray_to_kml2_sb(), LWPOLY::rings, and stringbuffer_aprintf().

Referenced by lwgeom_to_kml2_sb().

{
        int i, rv;

        /* Open polygon */
        if ( stringbuffer_aprintf(sb, "<%sPolygon>", prefix) < 0 ) return LW_FAILURE;
        for ( i = 0; i < poly->nrings; i++ )
        {
                /* Inner or outer ring opening tags */
                if( i )
                        rv = stringbuffer_aprintf(sb, "<%sinnerBoundaryIs><%sLinearRing><%scoordinates>", prefix, prefix, prefix);
                else
                        rv = stringbuffer_aprintf(sb, "<%souterBoundaryIs><%sLinearRing><%scoordinates>", prefix, prefix, prefix);
                if ( rv < 0 ) return LW_FAILURE;

                /* Coordinate array */
                if ( ptarray_to_kml2_sb(poly->rings[i], precision, sb) == LW_FAILURE ) return LW_FAILURE;

                /* Inner or outer ring closing tags */
                if( i )
                        rv = stringbuffer_aprintf(sb, "</%scoordinates></%sLinearRing></%sinnerBoundaryIs>", prefix, prefix, prefix);
                else
                        rv = stringbuffer_aprintf(sb, "</%scoordinates></%sLinearRing></%souterBoundaryIs>", prefix, prefix, prefix);
                if ( rv < 0 ) return LW_FAILURE;
        }
        /* Close polygon */
        if ( stringbuffer_aprintf(sb, "</%sPolygon>", prefix) < 0 ) return LW_FAILURE;

        return LW_SUCCESS;
}

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