def __new__(cls, input_array, array=None, dataset=None):
# Input array is an already formed ndarray instance
# We first cast to be our class type
obj = numpy.asarray(input_array).view(cls)
obj.Association = ArrayAssociation.FIELD
# add the new attributes to the created instance
obj.VTKObject = array
if dataset:
obj._dataset = vtkWeakReference()
obj._dataset.Set(dataset.VTKObject)
# Finally, we must return the newly created object:
return obj
def DataSet(self, dataset):
"""
Set the dataset this array is associated with. The reference is held
through a vtkWeakReference.
"""
# Do we have dataset to store
if dataset and dataset.VTKObject:
# Do we need to create a vtkWeakReference
if not hasattr(self, '_dataset') or self._dataset is None:
self._dataset = vtkWeakReference()
self._dataset.Set(dataset.VTKObject)
else:
self._dataset = None