vtkTupleInterpolator.h

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

  Program:   Visualization Toolkit
  Module:    vtkTupleInterpolator.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 vtkTupleInterpolator_h
#define vtkTupleInterpolator_h

#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkObject.h"

class vtkSpline;
class vtkPiecewiseFunction;


class VTKRENDERINGCORE_EXPORT vtkTupleInterpolator : public vtkObject
{
public:
  vtkTypeMacro(vtkTupleInterpolator, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkTupleInterpolator* New();


  void SetNumberOfComponents(int numComp);
  vtkGetMacro(NumberOfComponents,int);

  int GetNumberOfTuples();


  double GetMinimumT();
  double GetMaximumT();

  void Initialize();

  void AddTuple(double t, double tuple[]);

  void RemoveTuple(double t);

  void InterpolateTuple(double t, double tuple[]);

  enum {INTERPOLATION_TYPE_LINEAR=0,
        INTERPOLATION_TYPE_SPLINE
  };


  void SetInterpolationType(int type);
  vtkGetMacro(InterpolationType,int);
  void SetInterpolationTypeToLinear()
    {this->SetInterpolationType(INTERPOLATION_TYPE_LINEAR);}
  void SetInterpolationTypeToSpline()
    {this->SetInterpolationType(INTERPOLATION_TYPE_SPLINE);}


  void SetInterpolatingSpline(vtkSpline*);
  vtkGetObjectMacro(InterpolatingSpline,vtkSpline);

protected:
  vtkTupleInterpolator();
  ~vtkTupleInterpolator() override;

  // The number of components being interpolated
  int NumberOfComponents;

  // Specify the type of interpolation to use
  int InterpolationType;

  // This is the default 1D spline to use
  vtkSpline *InterpolatingSpline;

  // Internal variables for interpolation functions
  void InitializeInterpolation();
  vtkPiecewiseFunction    **Linear;
  vtkSpline               **Spline;


private:
  vtkTupleInterpolator(const vtkTupleInterpolator&) = delete;
  void operator=(const vtkTupleInterpolator&) = delete;

};

#endif