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// ************************************************************************* //
//                        avtSIMODataTreeIterator.h                          //
// ************************************************************************* //

#ifndef AVT_SIMO_DATA_TREE_ITERATOR_H
#define AVT_SIMO_DATA_TREE_ITERATOR_H

#include <pipeline_exports.h>

#include <avtDatasetToDatasetFilter.h>


class  avtExtents;


// ****************************************************************************
//  Class: avtSIMODataTreeIterator
//
//  Purpose:
//      A derived type of avtDatasetToDatasetFilter.  This will iterate over 
//      each vtkDataSet from an input avtDataTree.  This particular flavor
//      is "SIMO": Single Input Multiple Output, meaning that the output for
//      a single vtkDataSet can and likely will be multiple vtkDataSet outputs.
//
//  Programmer: Hank Childs
//  Creation:   July 24, 2000
//
//  Modifications:
//
//    Jeremy Meredith, Thu Sep 28 13:05:02 PDT 2000
//    Nade ExecuteDomain take one vtkDataSet as input and and return
//    a new output one.
//
//    Kathleen Bonnell, Fri Feb  9 14:47:10 PST 2001 
//    Renamed this class from avtDataTreeIterator.  Made ExecuteDomain return
//    an avtDomainTree.
//
//    Kathleen Bonnell, Thu Apr 12 10:25:04 PDT 2001 
//    Renamed this class as avtSIMODataTreeIterator. Added recursive
//    Execute method to walk down input tree.
//
//    Hank Childs, Wed Jun 20 09:39:01 PDT 2001
//    Added support progress callback.
//
//    Kathleen Bonnell, Wed Sep 19 13:45:33 PDT 2001
//    Added string argument to ExecuteDataTree method. 
//
//    Hank Childs, Wed Oct 24 14:21:18 PDT 2001
//    Moved PreExecute and PostExecute to avtFilter.
//
//    Hank Childs, Tue Nov  6 11:46:10 PST 2001
//    Add support for overriding extents.
//
//    Hank Childs, Mon Dec 27 10:58:14 PST 2004
//    Made inheritance virtual.
//
// **************************************************************************** 

class PIPELINE_API avtSIMODataTreeIterator : virtual public 
                                                      avtDatasetToDatasetFilter
{
   public:
                             avtSIMODataTreeIterator();
     virtual                ~avtSIMODataTreeIterator();

  protected:
    int                      currentNode;
    int                      totalNodes;

    virtual void             Execute(void);
    virtual avtDataTree_p    Execute(avtDataTree_p);
    virtual avtDataTree_p    ExecuteDataTree(vtkDataSet *,int,std::string) = 0;

    void                     OverrideTrueSpatialExtents(void)
                                 { overrideTrueSpatialExtents = true; };
    void                     OverrideTrueDataExtents(void)
                                 { overrideTrueDataExtents = true; };

  private:
    bool                     overrideTrueSpatialExtents;
    bool                     overrideTrueDataExtents;
    avtExtents              *trueSpatialExtents;
    avtExtents              *trueDataExtents;

    void                     UpdateExtents(avtDataTree_p);
};


#endif


