IECore::ConstCompoundObjectPtr SceneReader::computeGlobals( const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( ScenePath() );
if( !s )
{
return parent->globalsPlug()->defaultValue();
}
CompoundObjectPtr result = new CompoundObject;
// figure out which tags we want to convert into sets
vector<InternedString> allTags;
s->readTags( allTags, SceneInterface::LocalTag | SceneInterface::DescendantTag );
const std::string setsString = setsPlug()->getValue();
Tokenizer setsTokenizer( setsString, boost::char_separator<char>( " " ) );
vector<InternedString> tagsToLoadAsSets;
for( vector<InternedString>::const_iterator tIt = allTags.begin(), tEIt = allTags.end(); tIt != tEIt; ++tIt )
{
for( Tokenizer::const_iterator sIt = setsTokenizer.begin(), sEIt = setsTokenizer.end(); sIt != sEIt; ++sIt )
{
if( match( tIt->value(), *sIt ) )
{
tagsToLoadAsSets.push_back( *tIt );
}
}
}
// sort so that we can use lower_bound() in loadSetsWalk().
sort( tagsToLoadAsSets.begin(), tagsToLoadAsSets.end() );
// make sets for each of them, and then defer to loadSetsWalk()
// to do the work.
IECore::CompoundDataPtr sets = result->member<IECore::CompoundData>(
"gaffer:sets",
/* throwExceptions = */ false,
/* createIfMissing = */ true
);
vector<PathMatcher *> pathMatchers;
for( vector<InternedString>::const_iterator it = tagsToLoadAsSets.begin(), eIt = tagsToLoadAsSets.end(); it != eIt; ++it )
{
PathMatcherDataPtr d = sets->member<PathMatcherData>(
*it,
/* throwExceptions = */ false,
/* createIfMissing = */ true
);
pathMatchers.push_back( &(d->writable()) );
}
loadSetsWalk( s.get(), tagsToLoadAsSets, pathMatchers, vector<InternedString>() );
return result;
}
IECore::ConstInternedStringVectorDataPtr SceneReader::computeChildNames( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
return parent->childNamesPlug()->defaultValue();
}
// get the child names
InternedStringVectorDataPtr resultData = new InternedStringVectorData;
vector<InternedString> &result = resultData->writable();
s->childNames( result );
// filter out any which don't have the right tags
std::string tagsString = tagsPlug()->getValue();
if( !tagsString.empty() )
{
typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
Tokenizer tagsTokenizer( tagsString, boost::char_separator<char>( " " ) );
vector<InternedString> tags;
std::copy( tagsTokenizer.begin(), tagsTokenizer.end(), back_inserter( tags ) );
vector<InternedString>::iterator newResultEnd = result.begin();
SceneInterface::NameList childTags;
for( vector<InternedString>::const_iterator cIt = result.begin(), cEIt = result.end(); cIt != cEIt; ++cIt )
{
ConstSceneInterfacePtr child = s->child( *cIt );
childTags.clear();
child->readTags( childTags, IECore::SceneInterface::EveryTag );
bool childMatches = false;
for( SceneInterface::NameList::const_iterator tIt = childTags.begin(), tEIt = childTags.end(); tIt != tEIt; ++tIt )
{
if( find( tags.begin(), tags.end(), *tIt ) != tags.end() )
{
childMatches = true;
break;
}
}
if( childMatches )
{
*newResultEnd++ = *cIt;
}
}
result.erase( newResultEnd, result.end() );
}
return resultData;
}
IECore::ConstInternedStringVectorDataPtr SceneReader::computeSetNames( const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( ScenePath() );
if( !s )
{
return parent->setNamesPlug()->defaultValue();
}
InternedStringVectorDataPtr result = new InternedStringVectorData();
s->readTags( result->writable(), SceneInterface::LocalTag | SceneInterface::DescendantTag );
return result;
}
IECore::ConstCompoundObjectPtr SceneReader::computeAttributes( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
std::string fileName = fileNamePlug()->getValue();
if( !fileName.size() )
{
return parent->attributesPlug()->defaultValue();
}
ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
s = s->scene( path );
// read attributes
SceneInterface::NameList nameList;
s->attributeNames( nameList );
CompoundObjectPtr result = new CompoundObject;
for( SceneInterface::NameList::iterator it = nameList.begin(); it != nameList.end(); ++it )
{
// these internal attributes should be ignored:
if( *it == SceneCache::animatedObjectTopologyAttribute )
{
continue;
}
if( *it == SceneCache::animatedObjectPrimVarsAttribute )
{
continue;
}
// the const cast is ok, because we're only using it to put the object into a CompoundObject that will
// be treated as forever const after being returned from this function.
result->members()[ std::string( *it ) ] = constPointerCast<Object>( s->readAttribute( *it, context->getFrame() / g_frameRate ) );
}
// read tags and turn them into attributes of the form "user:tag:tagName"
nameList.clear();
s->readTags( nameList, IECore::SceneInterface::LocalTag );
for( SceneInterface::NameList::const_iterator it = nameList.begin(); it != nameList.end(); ++it )
{
if( it->string().compare( 0, 11, "ObjectType:" ) == 0 )
{
continue;
}
result->members()["user:tag:"+it->string()] = g_trueBoolData;
}
return result;
}
void SceneReader::hashAttributes( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
h = parent->attributesPlug()->defaultValue()->Object::hash();
return;
}
SceneInterface::NameList attributeNames;
s->attributeNames( attributeNames );
SceneInterface::NameList tagNames;
s->readTags( tagNames, IECore::SceneInterface::LocalTag );
if( !attributeNames.size() && !tagNames.size() )
{
h = parent->attributesPlug()->defaultValue()->Object::hash();
return;
}
FileSource::hashAttributes( path, context, parent, h );
bool animated = false;
const SampledSceneInterface *ss = runTimeCast<const SampledSceneInterface>( s.get() );
if( !ss )
{
animated = true;
}
else
{
for( SceneInterface::NameList::iterator it = attributeNames.begin(); it != attributeNames.end(); ++it )
{
if( ss->numAttributeSamples( *it ) > 1 )
{
animated = true;
break;
}
}
}
if( animated )
{
h.append( context->getFrame() );
}
}
void OBJ_SceneCacheTransform::readTags( const OP_Node *node, SceneInterface::NameList &tags, int filter )
{
// make sure its a SceneCacheNode
if ( !node->hasParm( pFile.getToken() ) || !node->hasParm( pRoot.getToken() ) )
{
return;
}
const SceneCacheNode<OP_Node> *sceneNode = reinterpret_cast< const SceneCacheNode<OP_Node>* >( node );
/// \todo: do we need to ensure the file exists first?
ConstSceneInterfacePtr scene = OBJ_SceneCacheTransform::scene( sceneNode->getFile(), sceneNode->getPath() );
if ( !scene )
{
return;
}
scene->readTags( tags, filter );
}
void SceneCacheNode<BaseType>::buildTagFilterMenu( void *data, PRM_Name *menu, int maxSize, const PRM_SpareData *, const PRM_Parm * )
{
SceneCacheNode<BaseType> *node = reinterpret_cast<SceneCacheNode<BaseType>*>( data );
if ( !node )
{
return;
}
menu[0].setToken( "*" );
menu[0].setLabel( "*" );
std::string file;
if ( !node->ensureFile( file ) )
{
// mark the end of our menu
menu[1].setToken( 0 );
return;
}
ConstSceneInterfacePtr scene = node->scene( file, node->getPath() );
if ( !scene )
{
// mark the end of our menu
menu[1].setToken( 0 );
return;
}
SceneInterface::NameList tags;
scene->readTags( tags );
std::vector<std::string> tagStrings;
for ( SceneInterface::NameList::const_iterator it=tags.begin(); it != tags.end(); ++it )
{
tagStrings.push_back( *it );
}
node->createMenu( menu, tagStrings );
}
void LinkedScene::writeAttribute( const Name &name, const Object *attribute, double time )
{
if ( m_readOnly )
{
throw Exception( "No write access to scene file!" );
}
if ( name == linkAttribute )
{
bool firstTime = !m_mainScene->hasAttribute( fileNameLinkAttribute );
if ( firstTime )
{
// if it's the first time, we better check if this level already has objects, tags or children
// and raise exceptions to prevent weird configurations...
if ( m_mainScene->hasObject() )
{
throw Exception( "Links to external scenes cannot be created on locations where there's already an object saved!" );
}
NameList names;
m_mainScene->childNames( names );
if ( names.size() )
{
throw Exception( "Links to external scenes cannot be created on locations where there are already child locations!" );
}
}
// we are creating a link!
const CompoundData *d = runTimeCast< const CompoundData >(attribute);
if ( !d )
{
throw Exception( "SceneInterface:link attribute must be of type CompoundData!" );
}
// open the linked scene
int linkDepth;
ConstDoubleDataPtr timeData = d->member< const DoubleData >( g_time );
const StringData *fileName = d->member< const StringData >( g_fileName );
const InternedStringVectorData *sceneRoot = d->member< const InternedStringVectorData >( g_root );
ConstSceneInterfacePtr linkedScene = expandLink( fileName, sceneRoot, linkDepth );
if ( !linkedScene )
{
throw Exception( "Trying to store a broken link!" );
}
// get the bounds of the linked scene
const SampledSceneInterface *sampledScene = runTimeCast< const SampledSceneInterface >(linkedScene.get());
if ( sampledScene && !timeData )
{
// When there's no time remapping we get all the bounding box samples from the linked scene, using the same time.
if ( firstTime )
{
size_t bounds = sampledScene->numBoundSamples();
for ( size_t b = 0; b < bounds; b++ )
{
m_mainScene->writeBound( sampledScene->readBoundAtSample(b), sampledScene->boundSampleTime(b) );
}
}
}
else
{
/// we store just the current bounding box
if ( timeData )
{
m_mainScene->writeBound( linkedScene->readBound(timeData->readable()), time );
}
else
{
m_mainScene->writeBound( linkedScene->readBound(time), time );
}
}
if ( firstTime )
{
// save the tags from the linked file to the current location so it gets propagated to the root.
NameList tags;
// Check if the position of the file we are trying to link to, has ancestor tags.
// This situation is undesirable, as it will make LinkedScene return inconsistent ancestor tags before and after the link location.
linkedScene->readTags(tags, SceneInterface::AncestorTag );
if ( tags.size() )
{
std::string pathStr;
SceneInterface::pathToString( sceneRoot->readable(), pathStr );
msg( Msg::Warning, "LinkedScene::writeAttribute", ( boost::format( "Detected ancestor tags while creating link to file %s at location %s." ) % fileName->readable() % pathStr ).str() );
}
tags.clear();
/// copy all descendent and local tags as descendent tags (so we can distinguish from tags added in the LinkedScene)
linkedScene->readTags(tags, SceneInterface::LocalTag|SceneInterface::DescendantTag );
static_cast< SceneCache *>(m_mainScene.get())->writeTags(tags, true);
m_mainScene->writeAttribute( fileNameLinkAttribute, d->member< const StringData >( g_fileName ), time );
m_mainScene->writeAttribute( rootLinkAttribute, d->member< const InternedStringVectorData >( g_root ), time );
}
/// we keep the information this level has a link, so we can prevent attempts to
/// create children or save objects at this level.
m_atLink = true;
if( timeData )
{
m_mainScene->writeAttribute( timeLinkAttribute, timeData, time );
}
return;
}
m_mainScene->writeAttribute(name,attribute,time);
}