/usr/include/osgEarthUtil/FeatureQueryTool is in libosgearth-dev 2.4.0+dfsg-6.
This file is owned by root:root, with mode 0o644.
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/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 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 OSGEARTHUTIL_FEATURE_QUERY_TOOL_H
#define OSGEARTHUTIL_FEATURE_QUERY_TOOL_H 1
#include <osgEarthUtil/Common>
#include <osgEarth/MapNode>
#include <osgEarth/MapNodeObserver>
#include <osgEarth/GeoData>
#include <osgEarthFeatures/Feature>
#include <osgEarthFeatures/FeatureSource>
#include <osgEarthFeatures/FeatureSourceIndexNode>
#include <osgEarthUtil/Controls>
#include <osgGA/GUIEventHandler>
#include <osg/View>
namespace osgEarth { namespace Util
{
using namespace osgEarth;
using namespace osgEarth::Features;
/**
* Tool that let you query the map for Features generated from a FeatureSource.
*
* By default, an unmodified left-click will activate a query. You can replace
* this test by calling setInputPredicate().
*/
class OSGEARTHUTIL_EXPORT FeatureQueryTool : public osgGA::GUIEventHandler,
public MapNodeObserver
{
public:
struct Callback : public osg::Referenced
{
struct EventArgs
{
const osgGA::GUIEventAdapter* _ea;
osgGA::GUIActionAdapter* _aa;
osg::Vec3d _worldPoint;
};
// called when a valid feature is found under the mouse coords
virtual void onHit( FeatureSourceIndexNode* index, FeatureID fid, const EventArgs& args ) { }
// called when no feature is found under the mouse coords
virtual void onMiss( const EventArgs& args ) { }
};
/**
* Interface for a custom input test.
*/
class InputPredicate : public osg::Referenced
{
public:
// return true to active a query under the mouse cursor.
virtual bool accept( const osgGA::GUIEventAdapter& ea ) =0;
};
public:
/**
* Constructs a new feature query tool.
*
* @param mapNode
* Map node containing feature data to query
* @param callbackToAdd
* (optional) convenience; calls addCallback with this parameter
*/
FeatureQueryTool(
MapNode* mapNode,
Callback* callbackToAdd =0L );
/** dtor */
virtual ~FeatureQueryTool() { }
/**
* Adds a feature query callback.
*/
void addCallback( Callback* callback );
/**
* Removes a feature query callback.
*/
/**
* Sets a custom input test. By default, the action is a left-click.
*/
void setInputPredicate( InputPredicate* value ) { _inputPredicate = value; }
public: // GUIEventHandler
virtual bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa );
public: // MapNodeObserver
virtual void setMapNode( MapNode* mapNode );
virtual MapNode* getMapNode() { return _mapNode.get(); }
protected:
osg::observer_ptr<MapNode> _mapNode;
bool _mouseDown;
float _mouseDownX, _mouseDownY;
osg::ref_ptr<InputPredicate> _inputPredicate;
typedef std::vector< osg::observer_ptr<Callback> > Callbacks;
Callbacks _callbacks;
};
//--------------------------------------------------------------------
/**
* Sample callback that will highlight a feature upon a query hit.
*/
class OSGEARTHUTIL_EXPORT FeatureHighlightCallback : public FeatureQueryTool::Callback
{
public:
virtual void onHit( FeatureSourceIndexNode* index, FeatureID fid, const EventArgs& args );
virtual void onMiss( const EventArgs& args );
protected:
void clear();
struct Selection {
osg::observer_ptr<FeatureSourceIndexNode> _index;
osg::observer_ptr<osg::Group> _group;
FeatureID _fid;
bool operator < ( const Selection& rhs ) const { return _fid < rhs._fid; }
};
typedef std::set<Selection> SelectionSet;
SelectionSet _selections;
/** dtor */
virtual ~FeatureHighlightCallback() { }
};
//--------------------------------------------------------------------
/**
* Sample callback that will display feature attributes upon a query hit.
*/
class OSGEARTHUTIL_EXPORT FeatureReadoutCallback : public FeatureQueryTool::Callback
{
public:
FeatureReadoutCallback( Controls::Container* container );
public:
virtual void onHit( FeatureSourceIndexNode* index, FeatureID fid, const EventArgs& args );
virtual void onMiss( const EventArgs& args );
protected:
void clear();
Controls::Grid* _grid;
/** dtor */
virtual ~FeatureReadoutCallback() { }
};
} } // namespace osgEarthUtil
#endif // OSGEARTHUTIL_FEATURE_QUERY_TOOL_H
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