Ribbons
=======

.. autofunction:: detroit.ribbon
.. autofunction:: detroit.ribbon_arrow

.. autoclass:: detroit.chord.ribbon.Ribbon

   .. automethod:: __call__
   .. automethod:: set_head_radius
   .. automethod:: set_radius
   .. automethod:: set_source_radius
   .. automethod:: set_target_radius
   .. automethod:: set_start_angle
   .. automethod:: set_end_angle
   .. automethod:: set_pad_angle
   .. automethod:: set_source
   .. automethod:: set_target
   .. automethod:: set_context