dox/Filtering/vtkImageBSplineInternals.h

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

  Program:   Visualization Toolkit
  Module:    vtkImageBSplineInternals.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 __vtkImageBSplineInternals_h
#define __vtkImageBSplineInternals_h

#include "vtkSystemIncludes.h"

class VTK_FILTERING_EXPORT vtkImageBSplineInternals
{
public:
  static int GetPoleValues(double poles[4], long &numPoles, long degree);


  static void ConvertToInterpolationCoefficients(
    double data[], long size, long border, double poles[4], long numPoles,
    double tol);


  static int GetInterpolationWeights(
    double weights[10], double w, long degree);
  static int GetInterpolationWeights(
    float weights[10], double w, long degree);


  static int InterpolatedValue(
    const double *coeffs, double *value,
    long width, long height, long slices, long depth,
    double x, double y, double z, long degree, long border);
  static int InterpolatedValue(
    const float *coeffs, float *value,
    long width, long height, long slices, long depth,
    double x, double y, double z, long degree, long border);

protected:
  vtkImageBSplineInternals() {};
  ~vtkImageBSplineInternals() {};

  static double InitialCausalCoefficient(
    double data[], long size, long border, double pole, double tol);

  static double InitialAntiCausalCoefficient(
    double data[], long size, long border, double pole, double tol);

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

#endif