/home/cube/sources/osgearth/src/osgEarthDrivers/kml/KMLReader.cpp

Go to the documentation of this file.

/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
 * Copyright 2008-2010 Pelican Mapping
 * http://osgearth.org
 *
 * osgEarth is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
#include "KMLReader"
#include "KML_Root"
#include <osgEarth/XmlUtils>
#include <stack>
#include <iterator>

using namespace osgEarth;

KMLReader::KMLReader( MapNode* mapNode, const KMLOptions* options ) :
_mapNode( mapNode ),
_options( options )
{
    //nop
}

osg::Node*
KMLReader::read( std::istream& in, const URIContext& context )
{
    // read the KML from an XML stream:
    osg::ref_ptr<XmlDocument> xml = XmlDocument::load( in, context );
    if ( !xml.valid() )
        return 0L;

    // convert to a config:
    Config config = xml->getConfig();

    osg::Node* node = read( config );
    node->setName( context.referrer() );

    return node;
}

osg::Node*
KMLReader::read( const Config& conf )
{
    osg::Group* root = new osg::Group();
    root->ref();

    root->setName( conf.uriContext().referrer() );

    KMLContext cx;
    cx._mapNode = _mapNode;
    cx._sheet = new StyleSheet();
    cx._groupStack.push( root );
    cx._options = _options;

    const Config& kml = conf.child("kml");
    if ( !kml.empty() )
    {
        KML_Root kmlRoot;
        kmlRoot.scan( kml, cx );    // first pass
        kmlRoot.scan2( kml, cx );   // second pass
        kmlRoot.build( kml, cx );   // third pass.
    }

    return root;
}