zxhGradientBase.h

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

  Program:   ZXH Registration Software
  Author:    Xiahai Zhuang
  Module:    $RCSfle: zxhGradientBase.h    $
  Language:  C++
  Date:      $Date: From  2004-01 $
  Version:   $Revision: 1.0, 2.0 $

=========================================================================*/
#ifndef ZXHGRADIENTBASE_H
#define ZXHGRADIENTBASE_H

#include "zxhTransformBase.h"
#include "zxhMetricBase.h"


class zxhGradientBase
{
public:
    zxhGradientBase(void):
        m_fDifferentialStep(0),m_pDifferential(0), fOptimizeDirectionWeight(0)
    {};
    virtual ~zxhGradientBase(void);

    zxhGradientBase* Clone( zxhGradientBase * & p )
    {
        if( p==0 ) return 0 ;
        p->m_fDifferentialStep = m_fDifferentialStep ;
        p->m_pDifferential = m_pDifferential ;
        return p ;
    }
    virtual void    SetDifferentialStep(float f)                    {m_fDifferentialStep=f;};
    virtual float   GetDifferentialStep()                           {return m_fDifferentialStep;};
    virtual void    SetDifferential(zxhTransformBase*p)             {m_pDifferential=p;}
    virtual zxhTransformBase* GetDifferential()                     {return m_pDifferential;}

    virtual bool    ComputeMetricGradient
        (
        zxhMetricBase*pMetric,
        zxhTransformBase*pInfluence=0
        )=0;

    ;
    virtual bool    PrePostComputeMetricGradient(
        zxhMetricBase*pMetric,
        zxhTransformBase*pInfluence,
        bool isPre ) { return false ;} ;
    virtual void    SetOptimizerDirectionWeight(float f)        { fOptimizeDirectionWeight=f;};
protected:

    float           m_fDifferentialStep;
    zxhTransformBase*m_pDifferential;
    float       fOptimizeDirectionWeight ;

};



#endif