void ImageView::insertConverter( Gaffer::NodePtr converter )
{
PlugPtr converterInput = converter->getChild<Plug>( "in" );
if( !converterInput )
{
throw IECore::Exception( "Converter has no Plug named \"in\"" );
}
ImagePlugPtr converterOutput = converter->getChild<ImagePlug>( "out" );
if( !converterOutput )
{
throw IECore::Exception( "Converter has no ImagePlug named \"out\"" );
}
PlugPtr newInput = converterInput->createCounterpart( "in", Plug::In );
setChild( "in", newInput );
NodePtr preprocessor = getPreprocessor<Node>();
Plug::OutputContainer outputsToRestore = preprocessor->getChild<ImagePlug>( "in" )->outputs();
PlugPtr newPreprocessorInput = converterInput->createCounterpart( "in", Plug::In );
preprocessor->setChild( "in", newPreprocessorInput );
newPreprocessorInput->setInput( newInput );
preprocessor->setChild( "__converter", converter );
converterInput->setInput( newPreprocessorInput );
for( Plug::OutputContainer::const_iterator it = outputsToRestore.begin(), eIt = outputsToRestore.end(); it != eIt; ++it )
{
(*it)->setInput( converterOutput );
}
}
void ScriptNode::deleteNodes( Node *parent, const Set *filter, bool reconnect )
{
parent = parent ? parent : this;
// because children are stored as a vector, it's
// much more efficient to delete those at the end before
// those at the beginning.
int i = (int)(parent->children().size()) - 1;
while( i >= 0 )
{
Node *node = parent->getChild<Node>( i );
if( node && ( !filter || filter->contains( node ) ) )
{
// reconnect the inputs and outputs as though the node was disabled
DependencyNode *dependencyNode = IECore::runTimeCast<DependencyNode>( node );
if( reconnect && dependencyNode )
{
for( OutputPlugIterator it( node ); it != it.end(); ++it )
{
Plug *inPlug = dependencyNode->correspondingInput( it->get() );
if ( !inPlug )
{
continue;
}
Plug *srcPlug = inPlug->getInput<Plug>();
if ( !srcPlug )
{
continue;
}
// record this plug's current outputs, and reconnect them. This is a copy of (*it)->outputs() rather
// than a reference, as reconnection can modify (*it)->outputs()...
Plug::OutputContainer outputs = (*it)->outputs();
for ( Plug::OutputContainer::const_iterator oIt = outputs.begin(); oIt != outputs.end(); )
{
Plug *dstPlug = *oIt;
if ( dstPlug && dstPlug->acceptsInput( srcPlug ) && this->isAncestorOf( dstPlug ) )
{
oIt++;
dstPlug->setInput( srcPlug );
}
else
{
oIt++;
}
}
}
}
parent->removeChild( node );
}
i--;
}
}
void ScriptNode::deleteNodes( Node *parent, const Set *filter, bool reconnect )
{
parent = parent ? parent : this;
// because children are stored as a vector, it's
// much more efficient to delete those at the end before
// those at the beginning.
int i = (int)(parent->children().size()) - 1;
while( i >= 0 )
{
Node *node = parent->getChild<Node>( i );
if( node && ( !filter || filter->contains( node ) ) )
{
// reconnect the inputs and outputs as though the node was disabled
DependencyNode *dependencyNode = IECore::runTimeCast<DependencyNode>( node );
if( reconnect && dependencyNode )
{
for( RecursiveOutputPlugIterator it( node ); !it.done(); ++it )
{
Plug *inPlug = nullptr;
try
{
inPlug = dependencyNode->correspondingInput( it->get() );
}
catch( const std::exception &e )
{
msg(
IECore::Msg::Warning,
boost::str( boost::format( "correspondingInput error while deleting - cannot reconnect \"%s\"" ) % it->get()->fullName() ),
e.what()
);
}
if ( !inPlug )
{
continue;
}
Plug *srcPlug = inPlug->getInput();
if ( !srcPlug )
{
continue;
}
// record this plug's current outputs, and reconnect them. This is a copy of (*it)->outputs() rather
// than a reference, as reconnection can modify (*it)->outputs()...
Plug::OutputContainer outputs = (*it)->outputs();
for ( Plug::OutputContainer::const_iterator oIt = outputs.begin(); oIt != outputs.end(); ++oIt )
{
Plug *dstPlug = *oIt;
if ( dstPlug && dstPlug->acceptsInput( srcPlug ) && this->isAncestorOf( dstPlug ) )
{
dstPlug->setInput( srcPlug );
}
}
}
}
parent->removeChild( node );
}
i--;
}
}
BoxPtr Box::create( Node *parent, const Set *childNodes )
{
BoxPtr result = new Box;
parent->addChild( result );
// it's pretty natural to call this function passing childNodes == ScriptNode::selection().
// unfortunately nodes will be removed from the selection as we reparent
// them, so we have to make a copy of childNodes so our iteration isn't befuddled by
// the changing contents. we can use this opportunity to weed out anything in childNodes
// which isn't a direct child of parent though.
StandardSetPtr verifiedChildNodes = new StandardSet();
for( NodeIterator nodeIt( parent ); nodeIt != nodeIt.end(); nodeIt++ )
{
if( childNodes->contains( nodeIt->get() ) )
{
verifiedChildNodes->add( *nodeIt );
}
}
// when a node we're putting in the box has connections to
// a node remaining outside, we need to reroute the connection
// via an intermediate plug on the box. this mapping maps input
// plugs (be they internal or external) to intermediate input plugs.
typedef std::pair<const Plug *, Plug *> PlugPair;
typedef std::map<const Plug *, Plug *> PlugMap;
PlugMap plugMap;
for( size_t i = 0, e = verifiedChildNodes->size(); i < e; i++ )
{
Node *childNode = static_cast<Node *>( verifiedChildNodes->member( i ) );
// reroute any connections to external nodes
for( RecursivePlugIterator plugIt( childNode ); plugIt != plugIt.end(); plugIt++ )
{
Plug *plug = plugIt->get();
if( plug->direction() == Plug::In )
{
Plug *input = plug->getInput<Plug>();
if( input && !verifiedChildNodes->contains( input->node() ) )
{
PlugMap::const_iterator mapIt = plugMap.find( input );
if( mapIt == plugMap.end() )
{
PlugPtr intermediateInput = plug->createCounterpart( result->promotedCounterpartName( plug ), Plug::In );
// we want intermediate inputs to appear on the same side of the node as the
// equivalent internal plug, so we copy the relevant metadata over.
copyMetadata( plug, intermediateInput.get() );
intermediateInput->setFlags( Plug::Dynamic, true );
result->addChild( intermediateInput );
intermediateInput->setInput( input );
mapIt = plugMap.insert( PlugPair( input, intermediateInput.get() ) ).first;
}
plug->setInput( mapIt->second );
plugIt.prune();
}
}
else
{
// take a copy of the outputs, because we might be modifying the
// original as we iterate.
Plug::OutputContainer outputs = plug->outputs();
if( !outputs.empty() )
{
typedef Plug::OutputContainer::const_iterator OutputIterator;
for( OutputIterator oIt = outputs.begin(), eIt = outputs.end(); oIt != eIt; oIt++ )
{
Plug *output = *oIt;
const Node *outputNode = output->node();
if( outputNode->parent<Node>() == parent && !verifiedChildNodes->contains( outputNode ) )
{
PlugMap::const_iterator mapIt = plugMap.find( plug );
if( mapIt == plugMap.end() )
{
PlugPtr intermediateOutput = plug->createCounterpart( result->promotedCounterpartName( plug ), Plug::Out );
copyMetadata( plug, intermediateOutput.get() );
intermediateOutput->setFlags( Plug::Dynamic, true );
result->addChild( intermediateOutput );
intermediateOutput->setInput( plug );
mapIt = plugMap.insert( PlugPair( plug, intermediateOutput.get() ) ).first;
}
output->setInput( mapIt->second );
}
}
plugIt.prune();
}
}
}
// reparent the child under the Box. it's important that we do this after adding the intermediate
// input plugs, so that when they are serialised and reloaded, the inputs to the box are set before
// the inputs to the nodes inside the box - see GafferSceneTest.ShaderAssignmentTest.testAssignShaderFromOutsideBox
// for a test case highlighting this necessity.
result->addChild( childNode );
}
return result;
}