Deleting vertex

[ty-dev]

Is it possible to delete a vertex?

[dranjan]

Not literally, but you can create a new NumPy array and reassign the data member of the PlyElement instance. numpy.delete may help here.

>>> vertex = numpy.array([(0, 0, 0),
...                       (0, 1, 1),
...                       (1, 0, 1),
...                       (1, 1, 0)],
...                      dtype=[('x', 'f4'), ('y', 'f4'),
...                             ('z', 'f4')])
>>> el = PlyElement.describe(vertex, 'vertex')
>>> el.count
4
>>> el.data = numpy.delete(el.data, 2, axis=0)
>>> el.count
3
>>> el.data
array([(0.0, 0.0, 0.0), (0.0, 1.0, 1.0), (1.0, 1.0, 0.0)], 
      dtype=[('x', '<f4'), ('y', '<f4'), ('z', '<f4')])