Inheritance diagram for osgEarth::Features::BuildTextFilter:

Collaboration diagram for osgEarth::Features::BuildTextFilter:

Public Member Functions
	BuildTextFilter (const Style &style=Style())
const Style &	getStyle ()
void	setStyle (const Style &s)
osg::Node *	push (FeatureList &input, FilterContext &context)
Protected Attributes
osg::ref_ptr< osg::Geode >	_geode
Style	_style

Detailed Description

Builds text labels from a stream of input features.

Definition at line 37 of file BuildTextFilter.

Constructor & Destructor Documentation

BuildTextFilter::BuildTextFilter ( const Style & style = Style() )

Definition at line 31 of file BuildTextFilter.cpp.

                                                     :
_style( style )
{
    //nop
}

Member Function Documentation

const Style& osgEarth::Features::BuildTextFilter::getStyle ( ) [inline]

The style to apply to feature geometry

Definition at line 43 of file BuildTextFilter.

{ return _style; }

osg::Node * BuildTextFilter::push	(	FeatureList &	input,
		FilterContext &	context
	)		`[virtual]`

Pushes a list of features through the filter.

Implements osgEarth::Features::FeaturesToNodeFilter.

Definition at line 38 of file BuildTextFilter.cpp.

{
    osg::Node* result = 0L;

    const TextSymbol* text = _style.get<TextSymbol>();
    if ( !text )
    {
        OE_WARN << LC << "Insufficient symbology (no TextSymbol)" << std::endl;
        return 0L;
    }

    // if a provider is set, load the plugin and create the node.
    if ( !text->provider()->empty() && !text->provider().isSetTo("legacy") )
    {
        LabelSourceOptions options;
        options.setDriver( *text->provider() );
        osg::ref_ptr<LabelSource> source = LabelSourceFactory::create( options );
        if ( source.valid() )
        {
            result = source->createNode( input, text, context );
        }
        else
        {
            OE_WARN << LC << "FAIL, unable to load label provider \"" << (*text->provider()) << "\"" << std::endl;
            return 0L;
        }
    }

    else // legacy behavior... will be deprecated.
    {
        BuildTextOperator op;
        result = op( input, text, context );
    }

    return result;
}