menpo/menpo — pull request #404 by patricksnape (2014-07-25 18:25:04+00:00)
Title: LandmarkGroup tojson method and PointGraph

This makes a bunch of changes again.

- Adds ``Graph``
- Takes an adjacency matrix, no spatial information
- Adds ``PointGraph``
- Combines ``Graph`` with ``PointCloud``
- Fixes ``from_mask`` on ``TriMesh``
- ``TriMesh`` can convert to ``PointGraph``
- Changes ``all`` label for default ``LandmarkGroup`` label to be ``None`` to match ``LandmarkManager``
- Fixes viewing for ``Trimesh`` and adds viewing for ``PointGraph``
- Refactors the labelling methods a bit and adds graphs where necessary (this is a bit untested due to lack of good data)
- Fixes the tongue annotations (they were missing points!)