text: //////////////////////////////////////////////////////////////////////////
  //
  //  Copyright (c) 2014, Image Engine Design Inc. All rights reserved.
  //
  //  Redistribution and use in source and binary forms, with or without
  //  modification, are permitted provided that the following conditions are
  //  met:
  //
  //      * Redistributions of source code must retain the above
  //        copyright notice, this list of conditions and the following
  //        disclaimer.
  //
  //      * Redistributions in binary form must reproduce the above
  //        copyright notice, this list of conditions and the following
  //        disclaimer in the documentation and/or other materials provided with
  //        the distribution.
  //
  //      * Neither the name of John Haddon nor the names of
  //        any other contributors to this software may be used to endorse or
  //        promote products derived from this software without specific prior
  //        written permission.
  //
  //  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  //  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  //  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  //  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  //  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  //  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  //  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  //  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  //  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  //  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  //  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  //////////////////////////////////////////////////////////////////////////
  
  #include "boost/python.hpp"
  
  #include "IECorePython/ScopedGILRelease.h"
  
  #include "GafferScene/SceneAlgo.h"
  #include "GafferScene/ScenePlug.h"
  #include "GafferScene/Filter.h"
  #include "GafferScene/PathMatcher.h"
  
  #include "GafferSceneBindings/SceneAlgoBinding.h"
  
  using namespace boost::python;
  using namespace GafferScene;
  
  namespace GafferSceneBindings
  {
  
  static void matchingPathsHelper1( const Filter *filter, const ScenePlug *scene, PathMatcher &paths )
  {
  	// gil release in case the scene traversal dips back into python:
  	IECorePython::ScopedGILRelease r;
  	matchingPaths( filter, scene, paths );
  }
  
  static void matchingPathsHelper2( const Gaffer::IntPlug *filterPlug, const ScenePlug *scene, PathMatcher &paths )
  {
  	// gil release in case the scene traversal dips back into python:
  	IECorePython::ScopedGILRelease r;
  	matchingPaths( filterPlug, scene, paths );
  }
  
  void bindSceneAlgo()
  {
  	def( "exists", exists );
  	def( "matchingPaths", &matchingPathsHelper1 );
  	def( "matchingPaths", &matchingPathsHelper2 );
  }
  
  } // namespace GafferSceneBindings
  