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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkCardinalSpline
* @brief computes an interpolating spline using a
* a Cardinal basis.
*
*
* vtkCardinalSpline is a concrete implementation of vtkSpline using a
* Cardinal basis.
*
* @sa
* vtkSpline vtkKochanekSpline
*/
#ifndef vtkCardinalSpline_h
#define vtkCardinalSpline_h
#include "vtkCommonComputationalGeometryModule.h" // For export macro
#include "vtkSpline.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKCOMMONCOMPUTATIONALGEOMETRY_EXPORT vtkCardinalSpline : public vtkSpline
{
public:
static vtkCardinalSpline* New();
vtkTypeMacro(vtkCardinalSpline, vtkSpline);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Compute Cardinal Splines for each dependent variable
*/
void Compute() override;
/**
* Evaluate a 1D cardinal spline.
*/
double Evaluate(double t) override;
/**
* Deep copy of cardinal spline data.
*/
void DeepCopy(vtkSpline* s) override;
protected:
vtkCardinalSpline();
~vtkCardinalSpline() override = default;
void Fit1D(int size, double* x, double* y, double* w, double coefficients[][4],
int leftConstraint, double leftValue, int rightConstraint, double rightValue);
void FitClosed1D(int size, double* x, double* y, double* w, double coefficients[][4]);
private:
vtkCardinalSpline(const vtkCardinalSpline&) = delete;
void operator=(const vtkCardinalSpline&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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