ConstObjectPtr SceneShape::readSceneShapeAttribute( const MDagPath &p, SceneInterface::Name attributeName )
{
MDagPath dagPath;
SceneShape *sceneShape = findScene( p, false, &dagPath );
if ( !sceneShape )
{
return 0;
}
MFnDagNode fnChildDag( dagPath );
if( attributeName == LinkedScene::linkAttribute )
{
if( !fnChildDag.isIntermediateObject() )
{
return readSceneShapeLink(p);
}
}
ConstSceneInterfacePtr scene = sceneShape->getSceneInterface();
if ( !scene )
{
return 0;
}
MPlug timePlug = fnChildDag.findPlug( aTime );
MTime time;
timePlug.getValue( time );
return scene->readAttribute( attributeName, time.as( MTime::kSeconds ) );
}
void SceneShape::sceneShapeAttributeNames( const MDagPath &p, SceneInterface::NameList &attributeNames )
{
MDagPath dagPath;
SceneShape *sceneShape = findScene( p, false, &dagPath );
if ( !sceneShape )
{
return;
}
SceneInterface::NameList sceneAttrNames;
ConstSceneInterfacePtr scene = sceneShape->getSceneInterface();
if ( !scene )
{
return;
}
scene->attributeNames( sceneAttrNames );
attributeNames.insert( attributeNames.end(), sceneAttrNames.begin(), sceneAttrNames.end() );
MFnDagNode fnChildDag( dagPath );
if( !fnChildDag.isIntermediateObject() && hasSceneShapeLink( p ) )
{
attributeNames.push_back( LinkedScene::linkAttribute );
}
}
void SceneCacheNode<BaseType>::buildShapeFilterMenu( 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;
}
std::vector<std::string> objects;
node->objectNames( scene.get(), objects );
std::sort( objects.begin(), objects.end() );
node->createMenu( menu, objects );
}
IECore::ConstCompoundObjectPtr SceneReader::computeAttributes( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
return parent->attributesPlug()->defaultValue();
}
// 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 ) ] = boost::const_pointer_cast<Object>( s->readAttribute( *it, context->getTime() ) );
}
return result;
}
static void loadSetWalk( const SceneInterface *s, const InternedString &setName, PathMatcher &set, const vector<InternedString> &path )
{
if( s->hasTag( setName, SceneInterface::LocalTag ) )
{
set.addPath( path );
}
// Figure out if we need to recurse by querying descendant tags to see if they include
// anything we're interested in.
if( !s->hasTag( setName, SceneInterface::DescendantTag ) )
{
return;
}
// Recurse to the children.
SceneInterface::NameList childNames;
s->childNames( childNames );
vector<InternedString> childPath( path );
childPath.push_back( InternedString() ); // room for the child name
for( SceneInterface::NameList::const_iterator it = childNames.begin(), eIt = childNames.end(); it != eIt; ++it )
{
ConstSceneInterfacePtr child = s->child( *it );
childPath.back() = *it;
loadSetWalk( child.get(), setName, set, childPath );
}
}
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;
}
Imath::Box3d HoudiniScene::readBound( double time ) const
{
OP_Node *node = retrieveNode( true );
Imath::Box3d bounds;
UT_BoundingBox box;
OP_Context context( time );
/// \todo: this doesn't account for SOPs containing multiple shapes
/// if we fix it, we need to fix the condition below as well
if ( node->getBoundingBox( box, context ) )
{
bounds = IECore::convert<Imath::Box3d>( box );
}
// paths embedded within a sop already have bounds accounted for
if ( m_contentIndex )
{
return bounds;
}
NameList children;
childNames( children );
for ( NameList::iterator it=children.begin(); it != children.end(); ++it )
{
ConstSceneInterfacePtr childScene = child( *it );
Imath::Box3d childBound = childScene->readBound( time );
if ( !childBound.isEmpty() )
{
bounds.extendBy( Imath::transform( childBound, childScene->readTransformAsMatrix( time ) ) );
}
}
return bounds;
}
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;
}
OP_ERROR SOP_SceneCacheSource::cookMySop( OP_Context &context )
{
flags().setTimeDep( true );
std::string file;
if ( !ensureFile( file ) )
{
addError( SOP_ATTRIBUTE_INVALID, ( file + " is not a valid .scc" ).c_str() );
gdp->clearAndDestroy();
return error();
}
std::string path = getPath();
Space space = getSpace();
UT_String shapeFilterStr;
evalString( shapeFilterStr, pShapeFilter.getToken(), 0, 0 );
UT_StringMMPattern shapeFilter;
shapeFilter.compile( shapeFilterStr );
UT_String p( "P" );
UT_String attributeFilter;
evalString( attributeFilter, pAttributeFilter.getToken(), 0, 0 );
if ( !p.match( attributeFilter ) )
{
attributeFilter += " P";
}
ConstSceneInterfacePtr scene = this->scene( file, path );
if ( !scene )
{
addError( SOP_ATTRIBUTE_INVALID, ( path + " is not a valid location in " + file ).c_str() );
gdp->clearAndDestroy();
return error();
}
MurmurHash hash;
hash.append( file );
hash.append( path );
hash.append( space );
hash.append( shapeFilterStr );
hash.append( attributeFilter );
if ( !m_loaded || m_hash != hash )
{
gdp->clearAndDestroy();
}
Imath::M44d transform = ( space == World ) ? worldTransform( file, path, context.getTime() ) : Imath::M44d();
SceneInterface::Path rootPath;
scene->path( rootPath );
loadObjects( scene, transform, context.getTime(), space, shapeFilter, attributeFilter.toStdString(), rootPath.size() );
m_loaded = true;
m_hash = hash;
return error();
}
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::ConstObjectPtr SceneReader::computeObject( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s || !s->hasObject() )
{
return parent->objectPlug()->defaultValue();
}
return s->readObject( context->getTime() );
}
GafferScene::ConstPathMatcherDataPtr SceneReader::computeSet( const IECore::InternedString &setName, const Gaffer::Context *context, const ScenePlug *parent ) const
{
PathMatcherDataPtr result = new PathMatcherData;
ConstSceneInterfacePtr rootScene = scene( ScenePath() );
if( rootScene )
{
loadSetWalk( rootScene.get(), setName, result->writable(), ScenePath() );
}
return result;
}
void SOP_SceneCacheSource::loadObjects( const IECore::SceneInterface *scene, Imath::M44d transform, double time, Space space, const UT_StringMMPattern &shapeFilter, const std::string &attributeFilter, size_t rootSize )
{
if ( scene->hasObject() && UT_String( scene->name() ).multiMatch( shapeFilter ) )
{
ObjectPtr object = scene->readObject( time );
std::string name = relativePath( scene, rootSize );
bool hasAnimatedTopology = scene->hasAttribute( SceneCache::animatedObjectTopologyAttribute );
bool hasAnimatedPrimVars = scene->hasAttribute( SceneCache::animatedObjectPrimVarsAttribute );
std::vector<InternedString> animatedPrimVars;
if ( hasAnimatedPrimVars )
{
const ObjectPtr animatedPrimVarObj = scene->readAttribute( SceneCache::animatedObjectPrimVarsAttribute, 0 );
const InternedStringVectorData *animatedPrimVarData = IECore::runTimeCast<const InternedStringVectorData>( animatedPrimVarObj );
if ( animatedPrimVarData )
{
const std::vector<InternedString> &values = animatedPrimVarData->readable();
animatedPrimVars.resize( values.size() );
std::copy( values.begin(), values.end(), animatedPrimVars.begin() );
}
}
modifyObject( object, name, hasAnimatedTopology, hasAnimatedPrimVars, animatedPrimVars );
Imath::M44d currentTransform;
if ( space == Local )
{
currentTransform = scene->readTransformAsMatrix( time );
}
else if ( space != Object )
{
currentTransform = transform;
}
// transform the object unless its an identity
if ( currentTransform != Imath::M44d() )
{
transformObject( object, currentTransform, hasAnimatedTopology, hasAnimatedPrimVars, animatedPrimVars );
}
// convert the object to Houdini
if ( !convertObject( object, name, attributeFilter, hasAnimatedTopology, hasAnimatedPrimVars, animatedPrimVars ) )
{
addError( SOP_LOAD_UNKNOWN_BINARY_FLAG, ( "Could not convert " + name + " to houdini" ).c_str() );
}
}
SceneInterface::NameList children;
scene->childNames( children );
for ( SceneInterface::NameList::const_iterator it=children.begin(); it != children.end(); ++it )
{
ConstSceneInterfacePtr child = scene->child( *it );
loadObjects( child, child->readTransformAsMatrix( time ) * transform, time, space, shapeFilter, attributeFilter, rootSize );
}
}
void SceneReader::hashBound( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
FileSource::hashBound( path, context, parent, h );
ConstSceneInterfacePtr s = scene( path );
const SampledSceneInterface *ss = runTimeCast<const SampledSceneInterface>( s.get() );
if( !ss || ss->numBoundSamples() > 1 )
{
h.append( context->getFrame() );
}
}
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;
}
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::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;
}
void SceneReader::hashTransform( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
SceneNode::hashTransform( path, context, parent, h );
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
return;
}
refreshCountPlug()->hash( h );
s->hash( SceneInterface::TransformHash, context->getTime(), h );
}
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;
}
SceneNode::hashAttributes( path, context, parent, h );
refreshCountPlug()->hash( h );
s->hash( SceneInterface::AttributesHash, context->getTime(), h );
}
void SceneReader::hashObject( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s || !s->hasObject() )
{
// no object
h = parent->objectPlug()->defaultValue()->hash();
return;
}
SceneNode::hashObject( path, context, parent, h );
refreshCountPlug()->hash( h );
s->hash( SceneInterface::ObjectHash, context->getTime(), h );
}
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::Box3f SceneReader::computeBound( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
return Box3f();
}
Box3d b = s->readBound( context->getFrame() / g_frameRate );
if( b.isEmpty() )
{
return Box3f();
}
return Box3f( b.min, b.max );
}
void SceneReader::hashObject( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s || !s->hasObject() )
{
// no object
h = parent->objectPlug()->defaultValue()->hash();
return;
}
FileSource::hashObject( path, context, parent, h );
const SampledSceneInterface *ss = runTimeCast<const SampledSceneInterface>( s.get() );
if( !ss || ss->numObjectSamples() > 1 )
{
h.append( context->getFrame() );
}
}
Imath::M44f SceneReader::computeTransform( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
return M44f();
}
M44d t = s->readTransformAsMatrix( context->getTime() );
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]
);
}
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 SceneReader::hashChildNames( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent, IECore::MurmurHash &h ) const
{
ConstSceneInterfacePtr s = scene( path );
if( !s )
{
h = parent->childNamesPlug()->defaultValue()->Object::hash();
return;
}
SceneNode::hashChildNames( path, context, parent, h );
refreshCountPlug()->hash( h );
// append a hash of the tags plug, as restricting the tags can affect the hierarchy
tagsPlug()->hash( h );
s->hash( SceneInterface::ChildNamesHash, context->getTime(), h );
}
LinkedScene::LinkedScene( ConstSceneInterfacePtr mainScene ) : m_mainScene(const_cast<SceneInterface*>(mainScene.get())), m_linkedScene(0), m_rootLinkDepth(0), m_readOnly(true), m_atLink(false), m_timeRemapped(false)
{
if( SceneCachePtr scc = runTimeCast<SceneCache>( m_mainScene ) )
{
m_readOnly = scc->readOnly();
}
m_sampled = (runTimeCast<const SampledSceneInterface>(mainScene.get()) != NULL);
}
ConstObjectPtr SceneShape::readSceneShapeLink( const MDagPath &p )
{
MDagPath dagPath;
SceneShape *sceneShape = findScene( p, true, &dagPath );
if ( !sceneShape )
{
throw Exception("readSceneShapeLink: Could not find SceneShape!");
}
ConstSceneInterfacePtr scene = sceneShape->getSceneInterface();
if ( !scene )
{
throw Exception( "Empty scene!");
}
MFnDagNode fnChildDag( dagPath );
MStatus st;
MPlug timePlug = fnChildDag.findPlug( aTime, &st );
if( !st )
{
throw Exception( "Could not find 'time' plug in SceneShape!");
}
// if time plug is connected to maya global time, then we assume there's no time remapping between the Maya scene and the loaded scene.
MPlugArray array;
timePlug.connectedTo( array, true, false, &st );
if( !st )
{
throw Exception( "Could not find 'time' plug connections in SceneShape!");
}
for ( unsigned int i = 0; i < array.length(); i++ )
{
if ( array[i].name() == "time1.outTime" )
{
/// connected to time, so no time remapping between maya scene and loaded scene.
return LinkedScene::linkAttributeData( scene.get() );
}
}
/// couldn't find connection to maya time, so this node is mapping the time some other way.
MTime time;
timePlug.getValue( time );
return LinkedScene::linkAttributeData( scene.get(), time.as( MTime::kSeconds ) );
}