osgEarth::Util::AddPointHandler Struct Reference

List of all members.

Public Member Functions
	AddPointHandler (osgEarth::Features::Feature *feature, osgEarth::Features::FeatureListSource *source, const osgEarth::SpatialReference *mapSRS)
bool	handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa)
void	setMouseButton (osgGA::GUIEventAdapter::MouseButtonMask mouseButton)
osgGA::GUIEventAdapter::MouseButtonMask	getMouseButton () const
void	setIntersectionMask (osg::Node::NodeMask intersectionMask)
osg::Node::NodeMask	getIntersectionMask () const
Private Member Functions
bool	addPoint (float x, float y, osgViewer::View *view)
Private Attributes
osgGA::GUIEventAdapter::MouseButtonMask	_mouseButton
bool	_mouseDown
bool	_firstMove
osg::ref_ptr < osgEarth::Features::FeatureListSource >	_source
osg::ref_ptr < osgEarth::Features::Feature >	_feature
osg::ref_ptr< const SpatialReference >	_mapSRS
osg::Node::NodeMask	_intersectionMask

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Detailed Description

AddPointHandler is a GUIEventHandler that allows you to append points to a Feature's Geometry

Definition at line 34 of file FeatureEditing.

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Constructor & Destructor Documentation

AddPointHandler::AddPointHandler	(	osgEarth::Features::Feature *	feature,
		osgEarth::Features::FeatureListSource *	source,
		const osgEarth::SpatialReference *	mapSRS
	)

Constructs a new AddPointHandler

Parameters:

feature	The Feature to edit
source	The FeatureSource that the Feature belongs to
mapSRS	The srs of the Map

Definition at line 28 of file FeatureEditing.cpp.

                                                                                                                   :
_feature(feature),
_source( source ),
_mapSRS( mapSRS ),
_mouseDown( false ),
_firstMove( false ),
_mouseButton( osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON ),
_intersectionMask( 0xffffffff )
{
}

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Member Function Documentation

bool AddPointHandler::addPoint	(	float	x,
		float	y,
		osgViewer::View *	view
	)		[private]

Definition at line 52 of file FeatureEditing.cpp.

{
    osgUtil::LineSegmentIntersector::Intersections results;
    if ( view->computeIntersections( x, y, results, _intersectionMask ) )
    {
        // find the first hit under the mouse:
        osgUtil::LineSegmentIntersector::Intersection first = *(results.begin());
        osg::Vec3d point = first.getWorldIntersectPoint();

        // transform it to map coordinates:
        double lat_rad, lon_rad, dummy;
        _mapSRS->getEllipsoid()->convertXYZToLatLongHeight( point.x(), point.y(), point.z(), lat_rad, lon_rad, dummy );

        double lat_deg = osg::RadiansToDegrees( lat_rad );
        double lon_deg = osg::RadiansToDegrees( lon_rad );

        if (_feature.valid())            
        {
            _feature->getGeometry()->push_back( osg::Vec3d(lon_deg, lat_deg, 0) );
            _source->dirty();
        }
        return true;
    }
    return false;
}

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osg::Node::NodeMask osgEarth::Util::AddPointHandler::getIntersectionMask

(

)

const [inline]

Definition at line 61 of file FeatureEditing.

{ return _intersectionMask;}

osgGA::GUIEventAdapter::MouseButtonMask AddPointHandler::getMouseButton

(

)

const

Gets the mouse button used for adding new points

Definition at line 46 of file FeatureEditing.cpp.

{
    return _mouseButton;
}

bool AddPointHandler::handle	(	const osgGA::GUIEventAdapter &	ea,
		osgGA::GUIActionAdapter &	aa
	)

Definition at line 79 of file FeatureEditing.cpp.

{
    osgViewer::View* view = static_cast<osgViewer::View*>(aa.asView());
    if ( ea.getEventType() == osgGA::GUIEventAdapter::PUSH )
    {
        if (ea.getButton() == _mouseButton)
        {
            _mouseDown = true;
            _firstMove = true;
            return addPoint( ea.getX(), ea.getY(), view );
        }
    }
    else if (ea.getEventType() == osgGA::GUIEventAdapter::RELEASE)
    {
        if (ea.getButton() == _mouseButton)
        {
            _mouseDown = false;
        }
    }
    else if (ea.getEventType() == osgGA::GUIEventAdapter::MOVE || ea.getEventType() == osgGA::GUIEventAdapter::DRAG)
    {
        if (_mouseDown)
        {
            if (!_firstMove)
            {
                return addPoint( ea.getX(), ea.getY(), view );
            }
            _firstMove = false;
        }
        return true;
    }

    return false;
}

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void osgEarth::Util::AddPointHandler::setIntersectionMask

(

osg::Node::NodeMask

intersectionMask

)

[inline]

Definition at line 60 of file FeatureEditing.

{ _intersectionMask = intersectionMask; }

void AddPointHandler::setMouseButton

(

osgGA::GUIEventAdapter::MouseButtonMask

mouseButton

)

Sets the mouse button used for adding new points

Definition at line 40 of file FeatureEditing.cpp.

{
    _mouseButton = mouseButton;
}

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Member Data Documentation

osg::ref_ptr< osgEarth::Features::Feature > osgEarth::Util::AddPointHandler::_feature [private]

Definition at line 71 of file FeatureEditing.

bool osgEarth::Util::AddPointHandler::_firstMove [private]

Definition at line 69 of file FeatureEditing.

osg::Node::NodeMask osgEarth::Util::AddPointHandler::_intersectionMask [private]

Definition at line 73 of file FeatureEditing.

osg::ref_ptr<const SpatialReference> osgEarth::Util::AddPointHandler::_mapSRS [private]

Definition at line 72 of file FeatureEditing.

osgGA::GUIEventAdapter::MouseButtonMask osgEarth::Util::AddPointHandler::_mouseButton [private]

Definition at line 67 of file FeatureEditing.

bool osgEarth::Util::AddPointHandler::_mouseDown [private]

Definition at line 68 of file FeatureEditing.

osg::ref_ptr< osgEarth::Features::FeatureListSource > osgEarth::Util::AddPointHandler::_source [private]

Definition at line 70 of file FeatureEditing.

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

• /home/cube/sources/osgearth/src/osgEarthUtil/FeatureEditing
• /home/cube/sources/osgearth/src/osgEarthUtil/FeatureEditing.cpp