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Hybrid/vtkGridTransform.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkGridTransform.h,v $
  Language:  C++

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

This software is copyrighted by Ken Martin, Will Schroeder and Bill Lorensen.
The following terms apply to all files associated with the software unless
explicitly disclaimed in individual files. This copyright specifically does
not apply to the related textbook "The Visualization Toolkit" ISBN
013199837-4 published by Prentice Hall which is covered by its own copyright.

The authors hereby grant permission to use, copy, and distribute this
software and its documentation for any purpose, provided that existing
copyright notices are retained in all copies and that this notice is included
verbatim in any distributions. Additionally, the authors grant permission to
modify this software and its documentation for any purpose, provided that
such modifications are not distributed without the explicit consent of the
authors and that existing copyright notices are retained in all copies. Some
of the algorithms implemented by this software are patented, observe all
applicable patent law.

IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF,
EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE IS PROVIDED ON AN
"AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

=========================================================================*/
#ifndef __vtkGridTransform_h
#define __vtkGridTransform_h

#include "vtkWarpTransform.h"
#include "vtkImageData.h"

#define VTK_GRID_NEAREST 0
#define VTK_GRID_LINEAR 1
#define VTK_GRID_CUBIC 3

class VTK_HYBRID_EXPORT vtkGridTransform : public vtkWarpTransform
{
public:
  static vtkGridTransform *New();
  vtkTypeMacro(vtkGridTransform,vtkWarpTransform);
  virtual void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetObjectMacro(DisplacementGrid,vtkImageData);
  vtkGetObjectMacro(DisplacementGrid,vtkImageData);


  vtkSetMacro(DisplacementScale,float);
  vtkGetMacro(DisplacementScale,float);


  vtkSetMacro(DisplacementShift,float);
  vtkGetMacro(DisplacementShift,float);


  void SetInterpolationMode(int mode);
  vtkGetMacro(InterpolationMode,int);
  void SetInterpolationModeToNearestNeighbor()
    { this->SetInterpolationMode(VTK_GRID_NEAREST); };
  void SetInterpolationModeToLinear()
    { this->SetInterpolationMode(VTK_GRID_LINEAR); };
  void SetInterpolationModeToCubic()
    { this->SetInterpolationMode(VTK_GRID_CUBIC); };
  const char *GetInterpolationModeAsString();

  vtkAbstractTransform *MakeTransform();

  unsigned long GetMTime();

protected:
  vtkGridTransform();
  ~vtkGridTransform();

  void InternalUpdate();

  void InternalDeepCopy(vtkAbstractTransform *transform);


  void ForwardTransformPoint(const float in[3], float out[3]);
  void ForwardTransformPoint(const double in[3], double out[3]);

  void ForwardTransformDerivative(const float in[3], float out[3],
              float derivative[3][3]);
  void ForwardTransformDerivative(const double in[3], double out[3],
              double derivative[3][3]);

  void InverseTransformPoint(const float in[3], float out[3]);
  void InverseTransformPoint(const double in[3], double out[3]);

  void InverseTransformDerivative(const float in[3], float out[3],
              float derivative[3][3]);
  void InverseTransformDerivative(const double in[3], double out[3],
              double derivative[3][3]);

//BTX
  void (*InterpolationFunction)(float point[3], float displacement[3],
            float derivatives[3][3],
            void *gridPtr, int gridType,
            int inExt[6], int inInc[3]);
//ETX
  int InterpolationMode;
  vtkImageData *DisplacementGrid;
  float DisplacementScale;
  float DisplacementShift;
private:
  vtkGridTransform(const vtkGridTransform&);  // Not implemented.
  void operator=(const vtkGridTransform&);  // Not implemented.
};

//BTX

//----------------------------------------------------------------------------
inline const char *vtkGridTransform::GetInterpolationModeAsString()
{
  switch (this->InterpolationMode)
    {
    case VTK_GRID_NEAREST:
      return "NearestNeighbor";
    case VTK_GRID_LINEAR:
      return "Linear";
    case VTK_GRID_CUBIC:
      return "Cubic";
    default:
      return "";
    }
}  
//ETX

#endif

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