Method loadPrimitiveVariables

src/IECoreScene/Primitive.cpp:403–457

}

PrimitiveVariableMap Primitive::loadPrimitiveVariables( const IndexedIO *ioInterface, const IndexedIO::EntryID &name, const IndexedIO::EntryIDList &primVarNames, const Canceller *canceller )
{
	IECore::Object::LoadContextPtr context = new Object::LoadContext( ioInterface->subdirectory( name )->subdirectory( g_dataEntry ), canceller );

	unsigned int v = m_ioVersion;
	ConstIndexedIOPtr container = context->container( Primitive::staticTypeName(), v );
	if ( !container )
	{
		throw Exception( "Could not find Primitive entry in the file!" );
	}
	ConstIndexedIOPtr ioVariables = container->subdirectory( g_variablesEntry );

	IndexedIO::EntryIDList names( primVarNames );
	if( v < 2 )
	{
		// we changed naming convention for UVs in version 2
		// so we must remap to the names that actually exist
		// in the file, assuming the user request is using
		// the new naming convention.
		IndexedIO::EntryIDList existingNames;
		ioVariables->entryIds( existingNames, IndexedIO::Directory );
		remapToLegacyVariableNames( primVarNames, existingNames, names );
	}

	PrimitiveVariableMap variables;
	for( const auto &primVarName : names )
	{
		ConstIndexedIOPtr ioPrimVar = ioVariables->subdirectory( primVarName, IndexedIO::NullIfMissing );
		if ( !ioPrimVar )
		{
			continue;
		}
		int i;
		ioPrimVar->read( g_interpolationEntry, i );

		Canceller::check( canceller );
		IntVectorDataPtr indices = nullptr;
		if( ioPrimVar->hasEntry( g_indicesEntry ) )
		{
			indices = context->load<IntVectorData>( ioPrimVar.get(), g_indicesEntry );
		}

		Canceller::check( canceller );
		variables.insert(
			PrimitiveVariableMap::value_type( primVarName, PrimitiveVariable( (PrimitiveVariable::Interpolation)i, context->load<Data>( ioPrimVar.get(), g_dataEntry ), indices ) )
		);
	}

	if( v < 2 )
	{
		::convertLegacyVariables( variables );
	}

	return variables;
}

bool Primitive::isEqualTo( const Object *other ) const
{