Inheritance diagram for osgEarth::Symbology::MarkerSymbol:

Collaboration diagram for osgEarth::Symbology::MarkerSymbol:

Public Types
enum	Placement { PLACEMENT_CENTROID, PLACEMENT_VERTEX, PLACEMENT_INTERVAL, PLACEMENT_RANDOM }
Public Member Functions
	MarkerSymbol (const Config &conf=Config())
optional< StringExpression > &	url ()
const optional < StringExpression > &	url () const
optional< Placement > &	placement ()
const optional< Placement > &	placement () const
optional< float > &	density ()
const optional< float > &	density () const
optional< NumericExpression > &	scale ()
const optional < NumericExpression > &	scale () const
optional< unsigned > &	randomSeed ()
const optional< unsigned > &	randomSeed () const
void	setImage (osg::Image *image)
osg::Image *	getImage () const
void	setModel (osg::Node *node)
osg::Node *	getNode () const
virtual Config	getConfig () const
virtual void	mergeConfig (const Config &conf)
Protected Attributes
optional< StringExpression >	_url
optional< NumericExpression >	_scale
optional< Placement >	_placement
optional< float >	_density
optional< unsigned >	_randomSeed
osg::ref_ptr< osg::Image >	_image
osg::ref_ptr< osg::Node >	_node

Detailed Description

The MarkerSymbol describes replacement of geometry with "markers". A marker it another object like a 3D model (node) or an image.

Definition at line 34 of file MarkerSymbol.

Member Enumeration Documentation

enum osgEarth::Symbology::MarkerSymbol::Placement

Controls the placements of models.

Enumerator:

PLACEMENT_CENTROID	Places one model instance at the centroid of the feature.
PLACEMENT_VERTEX	Places a model instance at each feature point.
PLACEMENT_INTERVAL	Places model instances at regular intervals within/along the feature geometry, according to density.
PLACEMENT_RANDOM	Scatters model instances randomly within/along feature, according to density.

Definition at line 40 of file MarkerSymbol.

        {
            PLACEMENT_CENTROID,

            PLACEMENT_VERTEX,

            PLACEMENT_INTERVAL,

            PLACEMENT_RANDOM
        };

Constructor & Destructor Documentation

MarkerSymbol::MarkerSymbol ( const Config & conf = Config() )

Definition at line 24 of file MarkerSymbol.cpp.

                                               :
Symbol     ( conf ),
_placement ( PLACEMENT_CENTROID ),
_density   ( 25.0f ),
_randomSeed( 0 )
{
    mergeConfig( conf );
}

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Member Function Documentation

optional<float>& osgEarth::Symbology::MarkerSymbol::density ( ) [inline]

For PLACEMENT_RANDOM/INTERVAL, the scattering density in instances per sqkm

Definition at line 68 of file MarkerSymbol.

{ return _density; }

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const optional<float>& osgEarth::Symbology::MarkerSymbol::density ( ) const [inline]

Definition at line 69 of file MarkerSymbol.

{ return _density; }

Config MarkerSymbol::getConfig ( ) const [virtual]

Reimplemented from osgEarth::Symbology::Symbol.

Definition at line 34 of file MarkerSymbol.cpp.

{
    Config conf = Symbol::getConfig();
    conf.key() = "marker";
    conf.addObjIfSet( "url", _url );
    conf.addObjIfSet( "scale", _scale );
    conf.addIfSet( "placement", "vertex",   _placement, PLACEMENT_VERTEX );
    conf.addIfSet( "placement", "interval", _placement, PLACEMENT_INTERVAL );
    conf.addIfSet( "placement", "random",   _placement, PLACEMENT_RANDOM );
    conf.addIfSet( "density", _density );
    conf.addIfSet( "random_seed", _randomSeed );
    conf.addNonSerializable( "MarkerSymbol::image", _image.get() );
    conf.addNonSerializable( "MarkerSymbol::node", _node.get() );
    return conf;
}

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osg::Image* osgEarth::Symbology::MarkerSymbol::getImage ( ) const [inline]

Definition at line 83 of file MarkerSymbol.

{ return _image.get(); }

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osg::Node* osgEarth::Symbology::MarkerSymbol::getNode ( ) const [inline]

Definition at line 87 of file MarkerSymbol.

{ return _node.get(); }

void MarkerSymbol::mergeConfig ( const Config & conf ) [virtual]

Definition at line 51 of file MarkerSymbol.cpp.

{
    conf.getObjIfSet( "url", _url );
    conf.getObjIfSet( "scale", _scale );
    conf.getIfSet( "placement", "vertex",   _placement, PLACEMENT_VERTEX );
    conf.getIfSet( "placement", "interval", _placement, PLACEMENT_INTERVAL );
    conf.getIfSet( "placement", "random",   _placement, PLACEMENT_RANDOM );
    conf.getIfSet( "density", _density );
    conf.getIfSet( "random_seed", _randomSeed );
    _image = conf.getNonSerializable<osg::Image>( "MarkerSymbol::image" );
    _node = conf.getNonSerializable<osg::Node>( "MarkerSymbol::node" );
}