Collaboration diagram for osgEarth::Features::FilterContext:

Public Member Functions
	FilterContext (Session session=0L, const FeatureProfile profile=0L, const GeoExtent &workingExtent=GeoExtent::INVALID)
	FilterContext (const FilterContext &rhs)
void	setResourceCache (ResourceCache *value)
Session *	getSession ()
const Session *	getSession () const
const FeatureProfile *	profile () const
osg::ref_ptr< const FeatureProfile > &	profile ()
optional< GeoExtent > &	extent ()
const optional< GeoExtent > &	extent () const
bool	isGeocentric () const
bool &	isGeocentric ()
bool	hasReferenceFrame () const
osg::Vec3d	toLocal (const osg::Vec3d &world) const
void	toLocal (Geometry *geom) const
osg::Vec3d	toWorld (const osg::Vec3d &local) const
void	toWorld (Geometry *geom) const
osg::Vec3d	toMap (const osg::Vec3d &local) const
osg::Vec3d	fromMap (const osg::Vec3d &map) const
const osg::Matrixd &	referenceFrame () const
const osg::Matrix &	inverseReferenceFrame () const
void	setReferenceFrame (const osg::Matrixd &in)
ResourceCache *	resourceCache ()
OptimizerHints &	optimizerHints ()
std::string	toString () const
Protected Attributes
osg::ref_ptr< Session >	_session
osg::ref_ptr< const FeatureProfile >	_profile
bool	_isGeocentric
optional< GeoExtent >	_extent
osg::Matrixd	_referenceFrame
osg::Matrixd	_inverseReferenceFrame
OptimizerHints	_optimizerHints
osg::ref_ptr< ResourceCache >	_resourceCache

Detailed Description

Context within which a chain of filters is executed.

Definition at line 40 of file FilterContext.

Constructor & Destructor Documentation

FilterContext::FilterContext	(	Session *	session = `0L`,
		const FeatureProfile *	profile = `0L`,
		const GeoExtent &	workingExtent = `GeoExtent::INVALID`
	)

Definition at line 24 of file FilterContext.cpp.

                                                                    :
_session     ( session ),
_profile     ( profile ),
_extent      ( workingExtent, workingExtent ),
_isGeocentric( false )
{
    _resourceCache = new ResourceCache();
}

FilterContext::FilterContext ( const FilterContext & rhs )

Definition at line 35 of file FilterContext.cpp.

                                                       :
_profile              ( rhs._profile.get() ),
_session              ( rhs._session.get() ),
_isGeocentric         ( rhs._isGeocentric ),
_extent               ( rhs._extent ),
_referenceFrame       ( rhs._referenceFrame ),
_inverseReferenceFrame( rhs._inverseReferenceFrame ),
_optimizerHints       ( rhs._optimizerHints ),
_resourceCache        ( rhs._resourceCache )
{
    //nop
}

Member Function Documentation

optional<GeoExtent>& osgEarth::Features::FilterContext::extent ( ) [inline]

The spatial extent of the working cell

Definition at line 73 of file FilterContext.

{ return _extent; }

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const optional<GeoExtent>& osgEarth::Features::FilterContext::extent ( ) const [inline]

Definition at line 74 of file FilterContext.

{ return _extent; }

osg::Vec3d FilterContext::fromMap ( const osg::Vec3d & map ) const

Converts a map coordinate to a context-local point.

Definition at line 88 of file FilterContext.cpp.

{
    osg::Vec3d world;
    if ( _isGeocentric )
        _extent->getSRS()->transformToECEF( point, world );
    return toLocal(world);
}

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const Session* osgEarth::Features::FilterContext::getSession ( ) const [inline]

Definition at line 62 of file FilterContext.

{ return _session.get(); }

Session* osgEarth::Features::FilterContext::getSession ( ) [inline]

Access to the Session under which this filter context operates

Definition at line 61 of file FilterContext.

{ return _session.get(); }

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bool osgEarth::Features::FilterContext::hasReferenceFrame ( ) const [inline]

Whether this context has a non-identity reference frame

Definition at line 85 of file FilterContext.

{ return !_referenceFrame.isIdentity(); }

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const osg::Matrix& osgEarth::Features::FilterContext::inverseReferenceFrame ( ) const [inline]

Multiplying by the inverse reference frame takes a point from local coords into world coords.

Definition at line 125 of file FilterContext.

{ return _inverseReferenceFrame; }

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bool& osgEarth::Features::FilterContext::isGeocentric ( ) [inline]

Definition at line 80 of file FilterContext.

{ return _isGeocentric; }

bool osgEarth::Features::FilterContext::isGeocentric ( ) const [inline]

Whether to assume a geocentric coordinate system for geographic profiles.

Definition at line 79 of file FilterContext.

{ return _isGeocentric; }

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OptimizerHints& osgEarth::Features::FilterContext::optimizerHints ( ) [inline]

Hints to the OSG optimizer. Filters that use this context can explicity ask to include or exclude optimizer options via this mechanism.

Definition at line 144 of file FilterContext.

{ return _optimizerHints; }

const FeatureProfile* osgEarth::Features::FilterContext::profile ( ) const [inline]

The spatial profile of the feature data in this context.

Definition at line 67 of file FilterContext.

{ return _profile.get(); }

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osg::ref_ptr<const FeatureProfile>& osgEarth::Features::FilterContext::profile ( ) [inline]

Definition at line 68 of file FilterContext.

{ return _profile; }

const osg::Matrixd& osgEarth::Features::FilterContext::referenceFrame ( ) const [inline]

Multiplying by the reference frame takes a point from world coords into local coords.

Definition at line 120 of file FilterContext.

{ return _referenceFrame; }

ResourceCache* osgEarth::Features::FilterContext::resourceCache ( ) [inline]

Accesses the shared resource cache where filters can store data.

Definition at line 138 of file FilterContext.

{ return _resourceCache.get(); }

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void osgEarth::Features::FilterContext::setReferenceFrame ( const osg::Matrixd & in ) [inline]

Sets the reference frame (and its inverse)

Definition at line 130 of file FilterContext.

                                                       {
            _referenceFrame = in;
            _inverseReferenceFrame.invert( _referenceFrame ); // = osg::Matrixd::inverse( _referenceFrame );
        }

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void osgEarth::Features::FilterContext::setResourceCache ( ResourceCache * value ) [inline]

Assigns a resource cache to use. One is created automatically if you don't assign one.

Definition at line 54 of file FilterContext.

{ _resourceCache = value; }

osg::Vec3d osgEarth::Features::FilterContext::toLocal ( const osg::Vec3d & world ) const [inline]

Converts from world coordiantes into local coordinates

Definition at line 90 of file FilterContext.

{ return world * _referenceFrame; }

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void FilterContext::toLocal ( Geometry * geom ) const

Converts a Geometry from world coords to local coords

Definition at line 49 of file FilterContext.cpp.

{
    if ( hasReferenceFrame() )
    {
        GeometryIterator gi( geom );
        while( gi.hasMore() )
        {
            Geometry* g = gi.next();
            for( osg::Vec3dArray::iterator i = g->begin(); i != g->end(); ++i )
                *i = *i * _referenceFrame;
        }
    }
}

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osg::Vec3d FilterContext::toMap ( const osg::Vec3d & local ) const

Converts a context-local point to a map coordinate.

Definition at line 79 of file FilterContext.cpp.

{
    osg::Vec3d world = toWorld(point);
    if ( _isGeocentric )
        _extent->getSRS()->transformFromECEF( world, world );
    return world;
}

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std::string FilterContext::toString ( ) const

Dump as a string

Definition at line 97 of file FilterContext.cpp.

{
    std::stringstream buf;

    buf << std::fixed
        << "CONTEXT: ["
        << "profile extent = "  << profile()->getExtent().toString()
        << ", working extent = " << extent()->toString()
        << ", geocentric = "     << osgEarth::toString(_isGeocentric)
        << "]";

    std::string str = buf.str();
    return str;
}

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void FilterContext::toWorld ( Geometry * geom ) const

Converts a Geometry from local coords to world coords

Definition at line 64 of file FilterContext.cpp.

{
    if ( hasReferenceFrame() )
    {
        GeometryIterator gi( geom );
        while( gi.hasMore() )
        {
            Geometry* g = gi.next();
            for( osg::Vec3dArray::iterator i = g->begin(); i != g->end(); ++i )
                *i = *i * _inverseReferenceFrame;
        }
    }
}

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osg::Vec3d osgEarth::Features::FilterContext::toWorld ( const osg::Vec3d & local ) const [inline]

Converts from local (reference frame) coordinates into world coordinates

Definition at line 100 of file FilterContext.

{ return local * _inverseReferenceFrame; }

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Member Data Documentation

optional<GeoExtent> osgEarth::Features::FilterContext::_extent [protected]

Definition at line 153 of file FilterContext.

osg::Matrixd osgEarth::Features::FilterContext::_inverseReferenceFrame [protected]

Definition at line 155 of file FilterContext.

bool osgEarth::Features::FilterContext::_isGeocentric [protected]

Definition at line 152 of file FilterContext.

OptimizerHints osgEarth::Features::FilterContext::_optimizerHints [protected]

Definition at line 156 of file FilterContext.

osg::ref_ptr<const FeatureProfile> osgEarth::Features::FilterContext::_profile [protected]

Definition at line 151 of file FilterContext.

osg::Matrixd osgEarth::Features::FilterContext::_referenceFrame [protected]

Definition at line 154 of file FilterContext.

osg::ref_ptr<ResourceCache> osgEarth::Features::FilterContext::_resourceCache [protected]

Definition at line 157 of file FilterContext.

osg::ref_ptr<Session> osgEarth::Features::FilterContext::_session [protected]

Definition at line 150 of file FilterContext.

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

/home/cube/sources/osgearth/src/osgEarthFeatures/FilterContext
/home/cube/sources/osgearth/src/osgEarthFeatures/FilterContext.cpp

osgEarth::Features::FilterContext Class Reference

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation