void QgsPointPatternFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, QgsStringMap props ) const
{
  for ( int i = 0; i < mMarkerSymbol->symbolLayerCount(); i++ )
  {
    QDomElement symbolizerElem = doc.createElement( "se:PolygonSymbolizer" );
    if ( !props.value( "uom", "" ).isEmpty() )
      symbolizerElem.setAttribute( "uom", props.value( "uom", "" ) );
    element.appendChild( symbolizerElem );

    // <Geometry>
    QgsSymbolLayerV2Utils::createGeometryElement( doc, symbolizerElem, props.value( "geom", "" ) );

    QDomElement fillElem = doc.createElement( "se:Fill" );
    symbolizerElem.appendChild( fillElem );

    QDomElement graphicFillElem = doc.createElement( "se:GraphicFill" );
    fillElem.appendChild( graphicFillElem );

    // store distanceX, distanceY, displacementX, displacementY in a <VendorOption>
    QString dist =  QgsSymbolLayerV2Utils::encodePoint( QPointF( mDistanceX, mDistanceY ) );
    QDomElement distanceElem = QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "distance", dist );
    symbolizerElem.appendChild( distanceElem );

    QgsSymbolLayerV2 *layer = mMarkerSymbol->symbolLayer( i );
    QgsMarkerSymbolLayerV2 *markerLayer = static_cast<QgsMarkerSymbolLayerV2 *>( layer );
    if ( !markerLayer )
    {
      QString errorMsg = QString( "MarkerSymbolLayerV2 expected, %1 found. Skip it." ).arg( layer->layerType() );
      graphicFillElem.appendChild( doc.createComment( errorMsg ) );
    }
    else
    {
      markerLayer->writeSldMarker( doc, graphicFillElem, props );
    }
  }
}
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void QgsMarkerLineSymbolLayerV2::toSld( QDomDocument &doc, QDomElement &element, QgsStringMap props ) const
{
  for ( int i = 0; i < mMarker->symbolLayerCount(); i++ )
  {
    QDomElement symbolizerElem = doc.createElement( "se:LineSymbolizer" );
    if ( !props.value( "uom", "" ).isEmpty() )
      symbolizerElem.setAttribute( "uom", props.value( "uom", "" ) );
    element.appendChild( symbolizerElem );

    // <Geometry>
    QgsSymbolLayerV2Utils::createGeometryElement( doc, symbolizerElem, props.value( "geom", "" ) );

    QString gap;
    switch ( mPlacement )
    {
      case FirstVertex:
        symbolizerElem.appendChild( QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "placement", "firstPoint" ) );
        break;
      case LastVertex:
        symbolizerElem.appendChild( QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "placement", "lastPoint" ) );
        break;
      case CentralPoint:
        symbolizerElem.appendChild( QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "placement", "centralPoint" ) );
        break;
      case Vertex:
        // no way to get line/polygon's vertices, use a VendorOption
        symbolizerElem.appendChild( QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "placement", "points" ) );
        break;
      default:
        gap = QString::number( mInterval );
        break;
    }

    if ( !mRotateMarker )
    {
      // markers in LineSymbolizer must be drawn following the line orientation,
      // use a VendorOption when no marker rotation
      symbolizerElem.appendChild( QgsSymbolLayerV2Utils::createVendorOptionElement( doc, "rotateMarker", "0" ) );
    }

    // <Stroke>
    QDomElement strokeElem = doc.createElement( "se:Stroke" );
    symbolizerElem.appendChild( strokeElem );

    // <GraphicStroke>
    QDomElement graphicStrokeElem = doc.createElement( "se:GraphicStroke" );
    strokeElem.appendChild( graphicStrokeElem );

    QgsSymbolLayerV2 *layer = mMarker->symbolLayer( i );
    QgsMarkerSymbolLayerV2 *markerLayer = static_cast<QgsMarkerSymbolLayerV2 *>( layer );
    if ( !markerLayer )
    {
      graphicStrokeElem.appendChild( doc.createComment( QString( "MarkerSymbolLayerV2 expected, %1 found. Skip it." ).arg( markerLayer->layerType() ) ) );
    }
    else
    {
      markerLayer->writeSldMarker( doc, graphicStrokeElem, props );
    }

    if ( !gap.isEmpty() )
    {
      QDomElement gapElem = doc.createElement( "se:Gap" );
      QgsSymbolLayerV2Utils::createFunctionElement( doc, gapElem, gap );
      graphicStrokeElem.appendChild( gapElem );
    }

    if ( !qgsDoubleNear( mOffset, 0.0 ) )
    {
      QDomElement perpOffsetElem = doc.createElement( "se:PerpendicularOffset" );
      perpOffsetElem.appendChild( doc.createTextNode( QString::number( mOffset ) ) );
      symbolizerElem.appendChild( perpOffsetElem );
    }
  }
}