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Hybrid/vtkThinPlateSplineTransform.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkThinPlateSplineTransform.h,v $
  Language:  C++

Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#ifndef __vtkThinPlateSplineTransform_h
#define __vtkThinPlateSplineTransform_h

#include "vtkWarpTransform.h"

#define VTK_RBF_CUSTOM 0
#define VTK_RBF_R      1
#define VTK_RBF_R2LOGR 2

class VTK_HYBRID_EXPORT vtkThinPlateSplineTransform : public vtkWarpTransform
{
public:
  vtkTypeMacro(vtkThinPlateSplineTransform,vtkWarpTransform);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkThinPlateSplineTransform *New();


  vtkGetMacro(Sigma,double);
  vtkSetMacro(Sigma,double);


  void SetBasis(int basis);
  vtkGetMacro(Basis,int);
  void SetBasisToR() { this->SetBasis(VTK_RBF_R); };
  void SetBasisToR2LogR() { this->SetBasis(VTK_RBF_R2LOGR); };
  const char *GetBasisAsString();

//BTX
  /*! Set the radial basis function to a custom function.  You must supply
      both the function and its derivative with respect to r. */
  void SetBasisFunction(double (*U)(double r)) {
    if (this->BasisFunction == U) { return; }
    this->SetBasis(VTK_RBF_CUSTOM);
    this->BasisFunction = U; 
    this->Modified(); };
  void SetBasisDerivative(double (*dUdr)(double r, double &dU)) {
    this->BasisDerivative = dUdr; 
    this->Modified(); };    
//ETX


  void SetSourceLandmarks(vtkPoints *source);
  vtkGetObjectMacro(SourceLandmarks,vtkPoints);


  void SetTargetLandmarks(vtkPoints *target);
  vtkGetObjectMacro(TargetLandmarks,vtkPoints);

  unsigned long GetMTime();

  vtkAbstractTransform *MakeTransform();

protected:
  vtkThinPlateSplineTransform();
  ~vtkThinPlateSplineTransform();

  void InternalUpdate();

  void InternalDeepCopy(vtkAbstractTransform *transform);

  void ForwardTransformPoint(const float in[3], float out[3]);
  void ForwardTransformPoint(const double in[3], double out[3]);

  void ForwardTransformDerivative(const float in[3], float out[3],
              float derivative[3][3]);
  void ForwardTransformDerivative(const double in[3], double out[3],
              double derivative[3][3]);

  double Sigma;
  vtkPoints *SourceLandmarks;
  vtkPoints *TargetLandmarks;

//BTX
  // the radial basis function to use
  double (*BasisFunction)(double r);
  double (*BasisDerivative)(double r, double& dUdr);
//ETX
  int Basis;

  int NumberOfPoints;
  double **MatrixW;
private:
  vtkThinPlateSplineTransform(const vtkThinPlateSplineTransform&);  // Not implemented.
  void operator=(const vtkThinPlateSplineTransform&);  // Not implemented.
};

#endif

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