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| == Overview ==
| | Moved to http://www.vtk.org/Wiki/VTK/Array_Refactoring |
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| Now that we have [http://kitware.com/InfovisWiki/index.php/N-Way_Array_Data_Structures N-Way Array Data Structures], it would be ideal if we could use them as attributes in data objects. This will likely involve some tricky work to somehow merge the vtkAbstractArray- and vtkArray- hierarchies.
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| == Recent Work ==
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| * Merged vtkFactoredArrayData / vtkFactoredArrayDataAlgorithm into vtkArrayData / vtkArrayDataAlgorithm.
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| * Added vtkArray::GetName() and vtkArray::SetName().
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| * vtkDenseArray memory management.
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| ** vtkDenseArray::MemoryBlock.
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| ** vtkDenseArray::StaticMemoryBlock.
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| ** vtkDenseArray::HeapMemoryBlock.
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| * vtkSparseICSArray.
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| ** Changes the way coordinates are stored, one contiguous array of coordinates per dimension, instead of a single contiguous array for all dimensions.
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| ** Implements value sorting.
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| ** Could probably replace the current vtkSparseArray implementation.
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| == Proposed Work ==
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| * Provide iterators, memory layout functionality in vtkDenseArray to support in-situ work.
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| * Support vtkArray as attributes. Some different approaches:
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| *# vtkArray derives from vtkAbstractArray.
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| *#* Worst possible approach, there are methods in vtkAbstractArray (GetVoidPointer()) that are totally incompatible with sparse arrays.
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| *# vtkArray and vtkAbstractArray remain apart.
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| *#* vtkFieldData would store vtkArray as a distinct type. Unfortunately, GetArray() is already taken by vtkDataArray.
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| *#* vtkAbstractArray derivatives HAVE-A vtkDenseArray to eliminate duplicate implementations.
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| *# vtkAbstractArray derives from vtkArray.
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| *#* Implementing vtkArray in current vtkAbstractArray implementations should be straightforward.
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| *#* vtkFieldData would have to provide methods that return vtkArray. Same problems with GetArray().
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| *#* Implies changes to Get/SetInputArrayToProcess().
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| == Action Items ==
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| * Performance comparisons between vtkDataArray & vtkDenseArray (Tim Shead)
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| * Modify vtkAbstractArray to provide access to an (optional) underlying vtkArray (Tim Shead)
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| * Modify vtkDataArray to use vtkDenseArray as an implementation (Andy Bauer?)
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| * Update vtkFieldData and vtkDataSetAttributes APIs to support vtkArray directly (Andy Bauer?)
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| * Deprecate vtkAbstractArray and its derivatives (Brian Wylie)
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