mgccubicpolynomialcurve2.h

来自「3D Game Engine Design Source Code非常棒」· C头文件 代码 · 共 53 行

// 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 MGCCUBICPOLYNOMIALCURVE2_H
#define MGCCUBICPOLYNOMIALCURVE2_H

#include "MgcPolynomialCurve2.h"


class MgcCubicPolynomialCurve2 : public MgcPolynomialCurve2
{
public:
    MgcCubicPolynomialCurve2 (MgcPolynomial* pkXPoly, MgcPolynomial* pkYPoly);
    virtual ~MgcCubicPolynomialCurve2 ();

    // tessellation data
    unsigned int GetVertexQuantity () const;
    MgcVector2* Vertices ();

    // tessellation by recursive subdivision
    void Tessellate (unsigned int uiLevel);

protected:
    // precomputation
    class IntervalParameters
    {
    public:
        unsigned int m_uiI0, m_uiI1;
        MgcVector2 m_akXuu[2];
    };

    // subdivide curve into two halves
    void Subdivide (unsigned int uiLevel, MgcReal fDSqr, MgcVector2* akX,
        IntervalParameters& rkIP);

    // tessellation data
    unsigned int m_uiVertexQuantity;
    MgcVector2* m_akVertex;
};

#include "MgcCubicPolynomialCurve2.inl"

#endif