/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkImageToStructuredPoints.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$
  Thanks:    Thanks to C. Charles Law who developed this class.


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
// .NAME vtkImageToStructuredPoints - Attaches image pipeline to VTK. 
// .SECTION Description
// vtkImageToStructuredPoints changes an image cache format to
// a structured points dataset.  It takes an Input plus an optional
// VectorInput. The VectorInput converts the RGB scalar components
// of the VectorInput to vector pointdata attributes. This filter
// will try to reference count the data but in some cases it must
// make a copy.

#ifndef __vtkImageToStructuredPoints_h
#define __vtkImageToStructuredPoints_h

#include "vtkSource.h"
#include "vtkStructuredPoints.h"

class vtkVectors;

class VTK_EXPORT vtkImageToStructuredPoints : public vtkSource
{
public:
  static vtkImageToStructuredPoints *New();
  vtkTypeMacro(vtkImageToStructuredPoints,vtkSource);
  void PrintSelf(ostream& os, vtkIndent indent);
  
  // Description:
  // Set/Get the input object from the image pipeline.
  void SetInput(vtkImageData *input);
  vtkImageData *GetInput();


  // Description:
  // Set/Get the input object from the image pipeline.
  void SetVectorInput(vtkImageData *input);
  vtkImageData *GetVectorInput();

  // Description:
  // Get the output of this source.
  vtkStructuredPoints *GetOutput();
  vtkStructuredPoints *GetOutput(int idx)
    {return (vtkStructuredPoints *) this->vtkSource::GetOutput(idx); };
  
protected:
  vtkImageToStructuredPoints();
  ~vtkImageToStructuredPoints();
  vtkImageToStructuredPoints(const vtkImageToStructuredPoints&) {};
  void operator=(const vtkImageToStructuredPoints&) {};

  // to translate the wholeExtent to have min 0 ( I do not like this hack).
  int Translate[3];
  
  void Execute();
  void ExecuteInformation();
  void ComputeInputUpdateExtents(vtkDataObject *data);

  
};


#endif


