function DownloadMarkupAsKml($kmz = false)
{
$kmlService = $this->site->CreateService(MgServiceType::KmlService);
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$map = new MgMap();
$map->Open($resourceService, $this->args['MAPNAME']);
$markupLayerResId = new MgResourceIdentifier($this->args['MARKUPLAYER']);
$downloadName = $markupLayerResId->GetName() . "." . ($kmz ? "kmz" : "kml");
//Find layer under _Markup with this layer def id
$layerGroups = $map->GetLayerGroups();
if (!$layerGroups->Contains("_Markup")) {
throw new Exception(GetLocalizedString("REDLINENOOPENLAYERS", $locale));
}
$layers = $map->GetLayers();
$markupLayer = null;
for ($i = 0; $i < $layers->GetCount(); $i++) {
$layer = $layers->GetItem($i);
$ldfId = $layer->GetLayerDefinition();
if (strcmp($ldfId->ToString(), $markupLayerResId->ToString()) == 0) {
$markupLayer = $layer;
break;
}
}
if ($markupLayer == null) {
throw new Exception(GetLocalizedString("REDLINEOPENLAYERNOTFOUND", $locale));
}
//View extent crunching time
$geomFact = new MgGeometryFactory();
$csFactory = new MgCoordinateSystemFactory();
$mapCs = $csFactory->Create($map->GetMapSRS());
$metersPerUnit = $mapCs->ConvertCoordinateSystemUnitsToMeters(1.0);
$mapScale = $map->GetViewScale();
$devW = $map->GetDisplayWidth();
$devH = $map->GetDisplayHeight();
$mapDpi = $map->GetDisplayDpi();
$metersPerPixel = 0.0254 / $mapDpi;
$mcsW = $mapScale * $devW * $metersPerPixel / $metersPerUnit;
$mcsH = $mapScale * $devH * $metersPerPixel / $metersPerUnit;
$center = $map->GetViewCenter();
$coord = $center->GetCoordinate();
$coord0 = $geomFact->CreateCoordinateXY($coord->GetX() - 0.5 * $mcsW, $coord->GetY() - 0.5 * $mcsH);
$coord1 = $geomFact->CreateCoordinateXY($coord->GetX() + 0.5 * $mcsW, $coord->GetY() + 0.5 * $mcsH);
$bbox = new MgEnvelope($coord0, $coord1);
//Call the service API
$br = $kmlService->GetFeaturesKml($markupLayer, $bbox, $devW, $devH, $mapDpi, 0, $kmz ? "KMZ" : "KML");
$len = $br->GetLength();
$outputBuffer = '';
$buffer = '';
while ($br->Read($buffer, 50000) != 0) {
$outputBuffer .= $buffer;
}
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename={$downloadName}");
header("Content-Length: " . strlen($outputBuffer));
echo $outputBuffer;
}
