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# Filtering/vtkSpline.h

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    00001 /*=========================================================================
    00002
    00003   Program:   Visualization Toolkit
    00004   Module:    $RCSfile: vtkSpline.h,v $
    00005   Language:  C++
    00006
    00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen
    00008   All rights reserved.
    00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
    00010
    00011      This software is distributed WITHOUT ANY WARRANTY; without even
    00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
    00013      PURPOSE.  See the above copyright notice for more information.
    00014
    00015 =========================================================================*/
    00054 #ifndef __vtkSpline_h
    00055 #define __vtkSpline_h
    00056
    00057 #include "vtkObject.h"
    00058
    00059 class vtkPiecewiseFunction;
    00060
    00061 class VTK_FILTERING_EXPORT vtkSpline : public vtkObject
    00062 {
    00063 public:
    00064   vtkTypeRevisionMacro(vtkSpline,vtkObject);
    00065   void PrintSelf(ostream& os, vtkIndent indent);
    00066
    00067 #ifndef VTK_REMOVE_LEGACY_CODE
    00068
    00069   virtual vtkSpline* MakeObject();
    00070 #endif
    00071
    00073
    00075   vtkSetMacro(ClampValue,int);
    00076   vtkGetMacro(ClampValue,int);
    00077   vtkBooleanMacro(ClampValue,int);
    00079
    00081   virtual void Compute () = 0;
    00082
    00084   virtual float Evaluate (float t) = 0;
    00085
    00087   void AddPoint (float t, float x);
    00088
    00090   void RemovePoint (float t);
    00091
    00093   void RemoveAllPoints ();
    00094
    00096
    00099   vtkSetMacro(Closed,int);
    00100   vtkGetMacro(Closed,int);
    00101   vtkBooleanMacro(Closed,int);
    00103
    00105
    00113   vtkSetClampMacro(LeftConstraint,int,0,3);
    00114   vtkGetMacro(LeftConstraint,int);
    00115   vtkSetClampMacro(RightConstraint,int,0,3);
    00116   vtkGetMacro(RightConstraint,int);
    00118
    00120
    00122   vtkSetMacro(LeftValue,float);
    00123   vtkGetMacro(LeftValue,float);
    00124   vtkSetMacro(RightValue,float);
    00125   vtkGetMacro(RightValue,float);
    00127
    00129   unsigned long GetMTime();
    00130
    00132   virtual void DeepCopy(vtkSpline *s);
    00133
    00134 protected:
    00135   vtkSpline();
    00136   ~vtkSpline ();
    00137
    00138   unsigned long ComputeTime;
    00139   int ClampValue;
    00140   float *Intervals;
    00141   float *Coefficients;
    00142   int LeftConstraint;
    00143   float LeftValue;
    00144   int RightConstraint;
    00145   float RightValue;
    00146   vtkPiecewiseFunction *PiecewiseFunction;
    00147   int Closed;
    00148
    00149   // Helper methods
    00150   float ComputeLeftDerivative();
    00151   float ComputeRightDerivative();
    00152
    00153 private:
    00154   vtkSpline(const vtkSpline&);  // Not implemented.
    00155   void operator=(const vtkSpline&);  // Not implemented.
    00156 };
    00157
    00158 #endif
    00159