MouseCoordsHandler Struct Reference

Collaboration diagram for MouseCoordsHandler:

List of all members.

Public Member Functions
	MouseCoordsHandler (LabelControl *label, osgEarth::MapNode *mapNode)
bool	handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa)
Public Attributes
osg::ref_ptr< LabelControl >	_label
MapNode *	_mapNode
osg::NodePath	_mapNodePath

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Detailed Description

Definition at line 98 of file osgearth_viewer.cpp.

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Constructor & Destructor Documentation

MouseCoordsHandler::MouseCoordsHandler	(	LabelControl *	label,
		osgEarth::MapNode *	mapNode
	)		[inline]

Definition at line 100 of file osgearth_viewer.cpp.

        : _label( label ),
          _mapNode( mapNode )
    {
        _mapNodePath.push_back( mapNode->getTerrainEngine() );
    }

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Member Function Documentation

bool MouseCoordsHandler::handle	(	const osgGA::GUIEventAdapter &	ea,
		osgGA::GUIActionAdapter &	aa
	)		[inline]

Definition at line 107 of file osgearth_viewer.cpp.

    {
        osgViewer::View* view = static_cast<osgViewer::View*>(aa.asView());
        if (ea.getEventType() == ea.MOVE || ea.getEventType() == ea.DRAG)
        {
            osgUtil::LineSegmentIntersector::Intersections results;
            if ( view->computeIntersections( ea.getX(), ea.getY(), _mapNodePath, results ) )
            {
                // find the first hit under the mouse:
                osgUtil::LineSegmentIntersector::Intersection first = *(results.begin());
                osg::Vec3d point = first.getWorldIntersectPoint();
                osg::Vec3d lla;

                // transform it to map coordinates:
                _mapNode->getMap()->worldPointToMapPoint(point, lla);

                std::stringstream ss;

                if ( s_mgrs )
                {
                    MGRSFormatter f( MGRSFormatter::PRECISION_1M );
                    ss << "MGRS: " << f.format(lla.y(), lla.x()) << "   ";
                }
                 // lat/long
                {
                    LatLongFormatter::AngularFormat fFormat = s_dms?
                        LatLongFormatter::FORMAT_DEGREES_MINUTES_SECONDS :
                        LatLongFormatter::FORMAT_DECIMAL_DEGREES;
                    
                    LatLongFormatter f( fFormat );

                    ss 
                        << "Lat: " << f.format( Angular(lla.y(),Units::DEGREES), 4 ) << "  "
                        << "Lon: " << f.format( Angular(lla.x(),Units::DEGREES), 5 );
                }

                _label->setText( ss.str() );
            }
            else
            {
                //Clear the text
                _label->setText( "" );
            }
        }
        return false;
    }

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Member Data Documentation

osg::ref_ptr< LabelControl > MouseCoordsHandler::_label

Definition at line 154 of file osgearth_viewer.cpp.

MapNode* MouseCoordsHandler::_mapNode

Definition at line 155 of file osgearth_viewer.cpp.

osg::NodePath MouseCoordsHandler::_mapNodePath

Definition at line 156 of file osgearth_viewer.cpp.

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The documentation for this struct was generated from the following file:

• /home/cube/sources/osgearth/src/applications/osgearth_viewer/osgearth_viewer.cpp