ConstSceneInterfacePtr LinkedScene::expandLink( const StringData *fileName, const InternedStringVectorData *root, int &linkDepth )
{
if ( fileName && root )
{
ConstSceneInterfacePtr l = 0;
try
{
l = SharedSceneInterfaces::get( fileName->readable() );
}
catch ( IECore::Exception &e )
{
IECore::msg( IECore::MessageHandler::Error, "LinkedScene::expandLink", std::string( e.what() ) + " when expanding link from file \"" + m_mainScene->fileName() + "\"" );
linkDepth = 0;
return 0;
}
linkDepth = root->readable().size();
l = l->scene(root->readable(), NullIfMissing);
if ( !l )
{
// \todo Consider throwing or printing error message.
linkDepth = 0;
}
return l;
}
linkDepth = 0;
return 0;
}
ConstSceneInterfacePtr SceneCacheNode<BaseType>::scene( const std::string &fileName, const std::string &path )
{
ConstSceneInterfacePtr result = 0;
try
{
result = SharedSceneInterfaces::get( fileName );
if ( path != SceneInterface::rootName.string() )
{
SceneInterface::Path p;
SceneInterface::stringToPath( path, p );
result = result->scene( p, SceneInterface::NullIfMissing );
}
}
catch ( std::exception &e )
{
std::cerr << "Error loading \"" << fileName << "\" at location \"" << path << "\": " << e.what() << std::endl;
}
catch ( ... )
{
std::cerr << "Unknown error loading \"" << fileName << "\" at location \"" << path << "\": " << std::endl;
}
return result;
}
ConstSceneInterfacePtr SceneCacheNode<BaseType>::scene( const std::string &fileName, const std::string &path )
{
ConstSceneInterfacePtr result = SharedSceneInterfaces::get( fileName );
if ( path != SceneInterface::rootName.string() )
{
SceneInterface::Path p;
SceneInterface::stringToPath( path, p );
result = result->scene( p, SceneInterface::NullIfMissing );
}
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;
}
IECore::ConstInternedStringVectorDataPtr SceneReader::computeChildNames( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
std::string fileName = fileNamePlug()->getValue();
if( !fileName.size() )
{
return parent->childNamesPlug()->defaultValue();
}
ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
s = s->scene( path );
InternedStringVectorDataPtr result = new InternedStringVectorData;
s->childNames( result->writable() );
return result;
}
Imath::M44f SceneReader::computeTransform( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
std::string fileName = fileNamePlug()->getValue();
if( !fileName.size() )
{
return M44f();
}
ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
s = s->scene( path );
M44d t = s->readTransformAsMatrix( context->getFrame() / g_frameRate );
return M44f(
t[0][0], t[0][1], t[0][2], t[0][3],
t[1][0], t[1][1], t[1][2], t[1][3],
t[2][0], t[2][1], t[2][2], t[2][3],
t[3][0], t[3][1], t[3][2], t[3][3]
);
}
Imath::Box3f SceneReader::computeBound( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
std::string fileName = fileNamePlug()->getValue();
if( !fileName.size() )
{
return Box3f();
}
ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
s = s->scene( path );
Box3d b = s->readBound( context->getFrame() / g_frameRate );
if( b.isEmpty() )
{
return Box3f();
}
return Box3f( b.min, b.max );
}
IECore::ConstObjectPtr SceneReader::computeObject( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
std::string fileName = fileNamePlug()->getValue();
if( !fileName.size() )
{
return parent->objectPlug()->defaultValue();
}
ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
s = s->scene( path );
ObjectPtr o;
if( s->hasObject() )
{
ConstObjectPtr o = s->readObject( context->getFrame() / g_frameRate );
return o ? o : ConstObjectPtr( parent->objectPlug()->defaultValue() );
}
return parent->objectPlug()->defaultValue();
}