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Usage
vtkTreeAlgorithm is a convenience class to make writing
algorithms easier. It is also designed to help transition
old algorithms to the new pipeline edgehitecture. There are
some assumptions and defaults made by this class you should
be aware of. This class defaults such that your filter will
have one input port and one output port. If that is not the
case simply change it with SetNumberOfInputPorts etc. See
this class constructor for the default. This class also
provides a FillInputPortInfo method that by default says
that all inputs will be Tree. If that isn't the case then
please override this method in your subclass. This class
breaks out the downstream requests into separate functions
such as ExecuteData and ExecuteInformation. For new
algorithms you should implement RequestData( request,
inputVec, outputVec) but for older filters there is a
default implementation that calls the old ExecuteData
(output) signature. For even older filters that don't
implement ExecuteData the default implementation calls the
even older Execute() signature.
To create an instance of class vtkTreeAlgorithm, simply
invoke its constructor as follows
obj = vtkTreeAlgorithm
Methods
The class vtkTreeAlgorithm has several methods that can be
used. They are listed below. Note that the documentation is
translated automatically from the VTK sources, and may not
be completely intelligible. When in doubt, consult the VTK
website. In the methods listed below, obj is an instance of
the vtkTreeAlgorithm class.
* string = obj.GetClassName ()
* int = obj.IsA (string name)
* vtkTreeAlgorithm = obj.NewInstance ()
* vtkTreeAlgorithm = obj.SafeDownCast (vtkObject o)
* vtkTree = obj.GetOutput () - Get the output data object
for a port on this algorithm.
* vtkTree = obj.GetOutput (int index) - Get the output data
object for a port on this algorithm.
* obj.SetInput (vtkDataObject obj) - Set an input of this
algorithm. You should not override these methods because
they are not the only way to connect a pipeline. Note that
these methods support old-style pipeline connections. When
writing new code you should use the more general
vtkAlgorithm::SetInputConnection(). These methods
transform the input index to the input port index, not an
index of a connection within a single port.
* obj.SetInput (int index, vtkDataObject obj) - Set an input
of this algorithm. You should not override these methods
because they are not the only way to connect a pipeline.
Note that these methods support old-style pipeline
connections. When writing new code you should use the more
general vtkAlgorithm::SetInputConnection(). These methods
transform the input index to the input port index, not an
index of a connection within a single port.
* FreeMat_Documentation
* Visualization_Toolkit_Filtering_Classes
* Generated on Thu Jul 25 2013 17:18:31 for FreeMat by
doxygen_ 1.8.1.1
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