C++ (Cpp) TerrainEngineNode::setVerticalScale Exemples

Exemple #1

void GlobePlugin::layersChanged()
{
  if ( mIsGlobeRunning )
  {
    QgsDebugMsg( "layersChanged: Globe Running, executing" );
    osg::ref_ptr<Map> map = mMapNode->getMap();

    if ( map->getNumImageLayers() > 1 || map->getNumElevationLayers() > 1 )
    {
      viewer.getDatabasePager()->clear();
    }

    // Remove elevation layers
    ElevationLayerVector list;
    map->getElevationLayers( list );
    for ( ElevationLayerVector::iterator i = list.begin(); i != list.end(); i++ )
    {
      map->removeElevationLayer( *i );
    }

    // Add elevation layers
    QSettings settings;
    QString cacheDirectory = settings.value( "cache/directory", QgsApplication::qgisSettingsDirPath() + "cache" ).toString();
    QTableWidget* table = mSettingsDialog.elevationDatasources();
    for ( int i = 0; i < table->rowCount(); ++i )
    {
      QString type = table->item( i, 0 )->text();
      bool cache = table->item( i, 1 )->checkState();
      QString uri = table->item( i, 2 )->text();
      ElevationLayer* layer = 0;

      if ( "Raster" == type )
      {
        GDALOptions options;
        options.url() = uri.toStdString();
        layer = new osgEarth::ElevationLayer( uri.toStdString(), options );
      }
      else if ( "Worldwind" == type )
      {
        WorldWindOptions options;
        options.elevationCachePath() = cacheDirectory.toStdString() + "/globe/worldwind_srtm";
        layer = new osgEarth::ElevationLayer( "WorldWind bil", options );
        TerrainEngineNode* terrainEngineNode = mMapNode->getTerrainEngine();
        terrainEngineNode->setVerticalScale( 2 );
        terrainEngineNode->setElevationSamplingRatio( 0.25 );
      }
      else if ( "TMS" == type )
      {
        TMSOptions options;
        options.url() = uri.toStdString();
        layer = new osgEarth::ElevationLayer( uri.toStdString(), options );
      }
      map->addElevationLayer( layer );

      if ( !cache || type == "Worldwind" ) layer->setCache( 0 ); //no tms cache for worldwind (use worldwind_cache)
    }

    //remove QGIS layer
    if ( mQgisMapLayer )
    {
      QgsDebugMsg( "removeMapLayer" );
      map->removeImageLayer( mQgisMapLayer );
    }

    //add QGIS layer
    QgsDebugMsg( "addMapLayer" );
    mTileSource = new QgsOsgEarthTileSource( mQGisIface );
    mTileSource->initialize( "", 0 );
    ImageLayerOptions options( "QGIS" );
    mQgisMapLayer = new ImageLayer( options, mTileSource );
    map->addImageLayer( mQgisMapLayer );
    mQgisMapLayer->setCache( 0 ); //disable caching
  }
  else
  {
    QgsDebugMsg( "layersChanged: Globe NOT running, skipping" );
    return;
  }
}