virtual void *operator()( void *item )
{
SceneGraph *s = (SceneGraph*)item;
ScenePlug::ScenePath path;
s->path( path );
try
{
ContextPtr context = new Context( *m_context, Context::Borrowed );
context->set( ScenePlug::scenePathContextName, path );
Context::Scope scopedContext( context.get() );
if( m_update )
{
// we're re-traversing this location, so lets only recompute attributes where
// their hashes change:
IECore::MurmurHash attributesHash = m_scene->attributesPlug()->hash();
if( attributesHash != s->m_attributesHash )
{
s->m_attributes = m_scene->attributesPlug()->getValue( &attributesHash );
s->m_attributesHash = attributesHash;
}
}
else
{
// First traversal: attributes and attribute hash should have been computed
// by the SceneGraphBuildTasks, so we only need to compute the object/transform:
s->m_object = m_scene->objectPlug()->getValue();
s->m_transform = m_scene->transformPlug()->getValue();
}
}
catch( const std::exception &e )
{
std::string name;
ScenePlug::pathToString( path, name );
IECore::msg( IECore::Msg::Error, "InteractiveRender::update", name + ": " + e.what() );
}
return s;
}
virtual void *operator()( void *item )
{
SceneGraph *s = (SceneGraph*)item;
ScenePlug::ScenePath path;
s->path( path );
std::string name;
ScenePlug::pathToString( path, name );
try
{
if( !m_editMode )
{
// outputting scene for the first time - do some attribute block tracking:
if( path.size() )
{
for( int i = m_previousPath.size(); i >= (int)path.size(); --i )
{
--m_attrBlockCounter;
m_renderer->attributeEnd();
}
}
m_previousPath = path;
++m_attrBlockCounter;
m_renderer->attributeBegin();
// set the name for this location:
m_renderer->setAttribute( "name", new StringData( name ) );
}
// transform:
if( !m_editMode )
{
m_renderer->concatTransform( s->m_transform );
}
// attributes:
if( s->m_attributes )
{
if( m_editMode )
{
CompoundDataMap parameters;
parameters["exactscopename"] = new StringData( name );
m_renderer->editBegin( "attribute", parameters );
}
outputAttributes( s->m_attributes.get(), m_renderer );
s->m_attributes = NULL;
if( m_editMode )
{
m_renderer->editEnd();
}
}
// object:
if( s->m_object && !m_editMode )
{
if( const VisibleRenderable *renderable = runTimeCast< const VisibleRenderable >( s->m_object.get() ) )
{
renderable->render( m_renderer );
}
s->m_object = 0;
}
}
catch( const std::exception &e )
{
IECore::msg( IECore::Msg::Error, "InteractiveRender::update", name + ": " + e.what() );
}
return NULL;
}
