/home/cube/sources/osgearth/src/osgEarthFeatures/FeatureGeometryIndex

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/>
 */

#ifndef OSGEARTHFEATURES_FEATURE_GEOMETRY_INDEX_H
#define OSGEARTHFEATURES_FEATURE_GEOMETRY_INDEX_H 1

#include <osgEarthFeatures/Common>
#include <osgEarthFeatures/Feature>
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/PrimitiveSet>
#include <map>
#include <vector>

namespace osgEarth { namespace Features
{
    struct FeatureGeometryRecord
    {
        typedef std::vector< osg::ref_ptr<osg::PrimitiveSet> > PrimitiveSetVector;
        typedef std::map< osg::ref_ptr<osg::Geometry>, PrimitiveSetVector > GeomPrimSetMap;

        osg::ref_ptr<osg::Geode> _geode;
        GeomPrimSetMap           _primSetsByGeometry;
    };

    class OSGEARTHFEATURES_EXPORT FeatureGeometryQuery
    {
    public:
        FeatureGeometryQuery( osg::Node* graph );

        bool find( FeatureID fid, FeatureGeometryRecord& output ) const;

    protected:
        osg::ref_ptr<osg::Node> _graph;
    };

    class OSGEARTHFEATURES_EXPORT FeatureGeometryIndex : public osg::Referenced
    {
    public:
        typedef std::map< FeatureID, FeatureGeometryRecord > FeatureRecords;

    public:
        const FeatureGeometryRecord* get( FeatureID fid ) const;

        const FeatureRecords& getRecords() const { return _records; }

    private:
        FeatureRecords _records;
        friend class FeatureGeometryIndexBuilder;
        FeatureGeometryIndex();
    };

    class OSGEARTHFEATURES_EXPORT FeatureGeometryIndexBuilder
    {
    public:
        FeatureGeometryIndexBuilder();

        void add( FeatureID id, osg::PrimitiveSet* primSet );

        FeatureGeometryIndex* createIndex( osg::Node* graph );


    public:
        typedef std::map< osg::PrimitiveSet*, FeatureID > PrimSetFeatureIdMap;

    protected:
        PrimSetFeatureIdMap _primSetIds;
    };

} } // osgEarth::Features

#endif // OSGEARTHFEATURES_FEATURE_GEOMETRY_INDEX_H