vtkImageBSplineInterpolator.h

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

  Program:   Visualization Toolkit
  Module:    vtkImageBSplineInterpolator.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef vtkImageBSplineInterpolator_h
#define vtkImageBSplineInterpolator_h

#include "vtkImagingCoreModule.h" // For export macro
#include "vtkAbstractImageInterpolator.h"

#define VTK_IMAGE_BSPLINE_DEGREE_MAX 9

class vtkImageData;
struct vtkInterpolationInfo;

class VTKIMAGINGCORE_EXPORT vtkImageBSplineInterpolator :
  public vtkAbstractImageInterpolator
{
public:
  static vtkImageBSplineInterpolator *New();
  vtkTypeMacro(vtkImageBSplineInterpolator, vtkAbstractImageInterpolator);
  virtual void PrintSelf(ostream& os, vtkIndent indent);


  void SetSplineDegree(int degree);
  int GetSplineDegree() { return this->SplineDegree; };
  int GetSplineDegreeMinValue() { return 0; }
  int GetSplineDegreeMaxValue() { return VTK_IMAGE_BSPLINE_DEGREE_MAX; }

  virtual void ComputeSupportSize(const double matrix[16], int support[3]);

  virtual bool IsSeparable();


  virtual void PrecomputeWeightsForExtent(
    const double matrix[16], const int extent[6], int newExtent[6],
    vtkInterpolationWeights *&weights);
  virtual void PrecomputeWeightsForExtent(
    const float matrix[16], const int extent[6], int newExtent[6],
    vtkInterpolationWeights *&weights);

  virtual void FreePrecomputedWeights(vtkInterpolationWeights *&weights);

protected:
  vtkImageBSplineInterpolator();
  ~vtkImageBSplineInterpolator();

  virtual void InternalUpdate();

  virtual void InternalDeepCopy(vtkAbstractImageInterpolator *obj);


  virtual void GetInterpolationFunc(
    void (**doublefunc)(
      vtkInterpolationInfo *, const double [3], double *));
  virtual void GetInterpolationFunc(
    void (**floatfunc)(
      vtkInterpolationInfo *, const float [3], float *));


  virtual void GetRowInterpolationFunc(
    void (**doublefunc)(
      vtkInterpolationWeights *, int, int, int, double *, int));
  virtual void GetRowInterpolationFunc(
    void (**floatfunc)(
      vtkInterpolationWeights *, int, int, int, float *, int));

  virtual void BuildKernelLookupTable();

  virtual void FreeKernelLookupTable();

  int SplineDegree;
  float *KernelLookupTable;

private:
  vtkImageBSplineInterpolator(const vtkImageBSplineInterpolator&);  // Not implemented.
  void operator=(const vtkImageBSplineInterpolator&);  // Not implemented.
};

#endif