---

Common/vtkHomogeneousTransform.h

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

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

  Copyright (c) 1993-2002 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 __vtkHomogeneousTransform_h
#define __vtkHomogeneousTransform_h

#include "vtkAbstractTransform.h"

class vtkMatrix4x4;

class VTK_COMMON_EXPORT vtkHomogeneousTransform : public vtkAbstractTransform
{
public:

  vtkTypeRevisionMacro(vtkHomogeneousTransform,vtkAbstractTransform);
  void PrintSelf(ostream& os, vtkIndent indent);

  void TransformPoints(vtkPoints *inPts, vtkPoints *outPts);


  virtual void TransformPointsNormalsVectors(vtkPoints *inPts, 
                                             vtkPoints *outPts, 
                                             vtkDataArray *inNms, 
                                             vtkDataArray *outNms,
                                             vtkDataArray *inVrs, 
                                             vtkDataArray *outVrs);

  void GetMatrix(vtkMatrix4x4 *m);

  vtkMatrix4x4 *GetMatrix() { this->Update(); return this->Matrix; };


  vtkHomogeneousTransform *GetHomogeneousInverse() {
    return (vtkHomogeneousTransform *)this->GetInverse(); };


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


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

protected:
  vtkHomogeneousTransform();
  ~vtkHomogeneousTransform();

  void InternalDeepCopy(vtkAbstractTransform *transform);

  vtkMatrix4x4 *Matrix;

private:
  vtkHomogeneousTransform(const vtkHomogeneousTransform&);  // Not implemented.
  void operator=(const vtkHomogeneousTransform&);  // Not implemented.
};

#endif

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