mgcpolynomialcurve2.h

《3D游戏引擎设计》的源码

// Magic Software, Inc.
// http://www.magic-software.com
// Copyright (c) 2000, All Rights Reserved
//
// Source code from Magic Software is supplied under the terms of a license
// agreement and may not be copied or disclosed except in accordance with the
// terms of that agreement.  The various license agreements may be found at
// the Magic Software web site.  This file is subject to the license
//
// FREE SOURCE CODE
// http://www.magic-software.com/License/free.pdf

#ifndef MGCPOLYNOMIALCURVE2_H
#define MGCPOLYNOMIALCURVE2_H

#include "MgcPolynomial.h"
#include "MgcSingleCurve2.h"


class MgcPolynomialCurve2 : public MgcSingleCurve2
{
public:
    MgcPolynomialCurve2 (MgcPolynomial* pkXPoly, MgcPolynomial* pkYPoly);
    virtual ~MgcPolynomialCurve2 ();

    int GetDegree () const;
    const MgcPolynomial* GetXPolynomial () const;
    const MgcPolynomial* GetYPolynomial () const;

    virtual MgcVector2 GetPosition (MgcReal fTime) const;
    virtual MgcVector2 GetFirstDerivative (MgcReal fTime) const;
    virtual MgcVector2 GetSecondDerivative (MgcReal fTime) const;
    virtual MgcVector2 GetThirdDerivative (MgcReal fTime) const;

    virtual MgcReal GetVariation (MgcReal fT0, MgcReal fT1,
        const MgcVector2* pkP0 = 0, const MgcVector2* pkP1 = 0) const;

protected:
    MgcPolynomial* m_pkXPoly;
    MgcPolynomial* m_pkYPoly;
    MgcPolynomial m_kXDer1, m_kYDer1;
    MgcPolynomial m_kXDer2, m_kYDer2;
    MgcPolynomial m_kXDer3, m_kYDer3;
};

#include "MgcPolynomialCurve2.inl"

#endif