osg::Node*
FeatureModelSource::createNodeImplementation(const Map* map,
const osgDB::Options* dbOptions,
ProgressCallback* progress )
{
// user must provide a valid map.
if ( !map )
{
OE_WARN << LC << "NULL Map is illegal when building feature data." << std::endl;
return 0L;
}
// make sure the feature source initialized properly:
if ( !_features.valid() || !_features->getFeatureProfile() )
{
OE_WARN << LC << "Invalid feature source" << std::endl;
return 0L;
}
// create a feature node factory:
FeatureNodeFactory* factory = createFeatureNodeFactory();
if ( !factory )
{
OE_WARN << LC << "Unable to create a feature node factory!" << std::endl;
return 0L;
}
// Session holds data that's shared across the life of the FMG
Session* session = new Session( map, _options.styles().get(), _features.get(), dbOptions );
// Graph that will render feature models. May included paged data.
FeatureModelGraph* graph = new FeatureModelGraph( session, _options, factory );
// install any post-merge operations on the FMG so it can call them during paging:
const NodeOperationVector& ops = postProcessors();
for( NodeOperationVector::const_iterator i = ops.begin(); i != ops.end(); ++i )
{
graph->addPostMergeOperation( i->get() );
}
// then run the ops on the staring graph:
firePostProcessors( graph );
return graph;
}
osg::Node*
FeatureModelSource::createNode( ProgressCallback* progress )
{
if ( !_factory.valid() )
_factory = createFeatureNodeFactory();
if ( !_factory.valid() )
return 0L;
if ( !_map.valid() )
return 0L;
if ( !_features.valid() || !_features->getFeatureProfile() )
{
OE_WARN << LC << "Invalid feature source" << std::endl;
return 0L;
}
// Session holds data that's shared across the life of the FMG
Session* session = new Session(
_map.get(),
_options.styles().get(),
_features.get(),
_dbOptions.get() );
// Graph that will render feature models. May included paged data.
FeatureModelGraph* graph = new FeatureModelGraph(
session,
_options,
_factory.get() );
// install any post-merge operations on the FMG so it can call them during paging:
const NodeOperationVector& ops = postProcessors();
for( NodeOperationVector::const_iterator i = ops.begin(); i != ops.end(); ++i )
graph->addPostMergeOperation( i->get() );
// then run the ops on the staring graph:
firePostProcessors( graph );
return graph;
}