Export
======

This example covers how to export and import some elements in Guerilla. 

Exporting a RenderGraph (or a RenderPass, a Light...)
-----------------------------------------

.. code-block:: python
    
    import os
    from guerilla import pynode
    rg = pynode('RenderGraph')
    rgfilename = os.path.join(os.path.expanduser('~'), 'test.grendergraph')
    rg.savefile(rgfilename)
    print 'Saving render graph to %s' % rgfilename

.. note:: For a render pass, use a '.glayer' extension. For a light, use '.glight'

Importing a RenderGraph
-----------------------

.. code-block:: python

    from guerilla import Document, pynode
    d = Document()
    rgfilename = os.path.join(os.path.expanduser('~'), 'test.grendergraph')
    loaded = d.loadfile(rgfilename)
    if loaded:
        rg = loaded[0]
        print 'new render graph node: %s' % loaded[0].name
    else:
        print 'Unable to load %s' % rgfilename

.. note:: loadfile can be called from a SceneGraphNode (or a Node) too.

Going further
-------------

* Try the next example in :doc:`index` 
* Explore the API documentation
 * :class:`~guerilla.Document`
 * :class:`~guerilla.SceneGraphNode`
 * :class:`~guerilla.Node`
 * :meth:`~guerilla.pynode`