Class SceneCache::ReaderImplementation

src/IECoreScene/SceneCache.cpp:322–1186

Reader implementation for SceneCache Child locations keep a refcount pointer to their parent, so they can always ask path, read global sample times, go up in the chain.

/// Reader implementation for SceneCache
/// Child locations keep a refcount pointer to their parent, so they can always ask path, read global sample times, go up in the chain.
class SceneCache::ReaderImplementation : public SceneCache::Implementation
{
	public :

		IE_CORE_DECLAREPTR( ReaderImplementation )

		ReaderImplementation( IndexedIOPtr io, SceneCache::Implementation *parent = nullptr) : SceneCache::Implementation( io ), m_parent(static_cast< ReaderImplementation* >( parent )), m_sharedData(nullptr), m_boundSampleTimes(nullptr), m_transformSampleTimes(nullptr), m_objectSampleTimes(nullptr)
		{
			if ( m_parent )
			{
				// use same map from the root
				m_sharedData = m_parent->m_sharedData;
			}
			else
			{
				// only the root instance allocate the map.
				m_sharedData = new SharedData;
			}
		}

		~ReaderImplementation() override
		{
			if ( m_sharedData && !m_parent )
			{
				delete m_sharedData;
			}
		}

		const SceneCache::Name &name() const
		{
			if ( m_parent )
			{
				return m_indexedIO->currentEntryId();
			}
			else
			{
				return SceneInterface::rootName;
			}
		}

		void path( SceneCache::Path &p ) const
		{
			if ( m_parent )
			{
				m_parent->path( p );
				p.push_back( m_indexedIO->currentEntryId() );
			}
		}

		const SampleTimes &boundSampleTimes() const
		{
			if ( !m_boundSampleTimes )
			{
				m_boundSampleTimes = restoreSampleTimes( boundEntry );
				if ( !m_boundSampleTimes )
				{
					m_boundSampleTimes = &g_defaults.implicitSample;
				}