Array Refactoring: Difference between revisions
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*#* Worst possible approach, there are methods in vtkAbstractArray (GetVoidPointer()) that are totally incompatible with sparse arrays. | *#* Worst possible approach, there are methods in vtkAbstractArray (GetVoidPointer()) that are totally incompatible with sparse arrays. | ||
*# vtkArray and vtkAbstractArray remain apart. | *# vtkArray and vtkAbstractArray remain apart. | ||
*#* vtkFieldData would store vtkArray as a distinct type. Unfortunately, this GetArray() is already taken by vtkDataArray. | |||
*#* Wouldn't work with Get/SetInputArrayToProcess(). | |||
*# vtkAbstractArray derives from vtkArray. | *# vtkAbstractArray derives from vtkArray. | ||
*#* Implementing vtkArray in current vtkAbstractArray implementations should be straightforward. | |||
*#* vtkFieldData would have to provide methods that return vtkArray. Same problems with GetArray(). | |||
*#* Implies changes to Get/SetInputArrayToProcess(). |
Revision as of 12:06, 8 April 2009
Overview
Now that we have 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.
Recent Work
- Added vtkArray::GetName() and vtkArray::SetName()
- vtkDenseArray memory management.
- vtkDenseArray::MemoryBlock
- vtkDenseArray::StaticMemoryBlock
- vtkDenseArray::HeapMemoryBlock
- vtkSparseICSArray
- Changes the way coordinates are stored, one contiguous array of coordinates per dimension, instead of a single contiguous array for all dimensions.
- Implements value sorting.
- Could probably replace the current vtkSparseArray implementation.
Proposed Work
- Provide iterators, memory layout functionality in vtkDenseArray to support in-situ work.
- Support vtkArray as attributes. Some different approaches:
- vtkArray derives from vtkAbstractArray.
- Worst possible approach, there are methods in vtkAbstractArray (GetVoidPointer()) that are totally incompatible with sparse arrays.
- vtkArray and vtkAbstractArray remain apart.
- vtkFieldData would store vtkArray as a distinct type. Unfortunately, this GetArray() is already taken by vtkDataArray.
- Wouldn't work with Get/SetInputArrayToProcess().
- vtkAbstractArray derives from vtkArray.
- Implementing vtkArray in current vtkAbstractArray implementations should be straightforward.
- vtkFieldData would have to provide methods that return vtkArray. Same problems with GetArray().
- Implies changes to Get/SetInputArrayToProcess().
- vtkArray derives from vtkAbstractArray.