---

rdSpline.h

// rdSpline.cpp
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Copyright 2000 Realistic Dynamics, Inc.
// All rights reserved.
//
// Please do not read, copy, distribute, or use without permission.
// Contact: Frank C. Anderson, fca@RealisticDynamics.com
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#ifndef __rdSpline_h__
#define __rdSpline_h__


// INCLUDES
#include "rdTools.h"

// DEFINES
#define RDSPLINE_MAXSIZE 2048


//=============================================================================
//=============================================================================
class RDTOOLS_API rdSpline
{
//=============================================================================
// DATA
//=============================================================================
private:
   int _status;
   char _name[RDSPLINE_MAXSIZE];
   double _ti,_tf;
   int _order;
   int _nknots;
   int _ncoefs;
   double *_knots;
   double *_coefs;
   double *_tx;
   double *_b;

//=============================================================================
// METHODS
//=============================================================================
public:
   //--------------------------------------------------------------------------
   // CONSTRUCTION
   //--------------------------------------------------------------------------
   //rdSpline(const char *aName,double aTI,double aTF,int aOrder,
   // int aNKnots,double *aKnots,int aNCoefs,double *aCoefs);
   virtual ~rdSpline();
   rdSpline(const char* aFileName);
   rdSpline(FILE *aFP);
private:
   int initialize(FILE *aFP);
   void null();
   int checkFileStatus(int aStatus);

   //--------------------------------------------------------------------------
   // EVALUATION
   //--------------------------------------------------------------------------
public:
   int getKnotIndex(double x);
   double evaluate(double x);

   //--------------------------------------------------------------------------
   // PRINTING
   //--------------------------------------------------------------------------
   void print();

//=============================================================================
}; // END class rdSpline
//=============================================================================
//=============================================================================

#endif  // __rdSpline_h__

---