mgcbezierpatchg.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 MGCBEZIERPATCHG_H
#define MGCBEZIERPATCHG_H

#include "MgcParametricSurface.h"
class MgcVector3;


class MgcBezierPatchG : public MgcParametricSurface
{
public:
    // abstract base class for specific type and degree patches
    virtual ~MgcBezierPatchG ();

    // patch data
    unsigned int GetDegree () const;
    unsigned int GetCtrlQuantity () const;
    MgcVector3* GetCtrlPoints ();

    // tessellation data
    unsigned int GetVertexQuantity () const;
    MgcVector3* GetVertices ();
    MgcVector3* GetNormals ();
    unsigned int GetTriangleQuantity () const;
    const unsigned int* GetConnectivity () const;

    // tessellation by recursive subdivision
    virtual void Tessellate (unsigned int uiLevel, bool bWantNormals) = 0;

protected:
    // Construction.  MgcBezierPatchG accepts responsibility for deleting
    // the input arrays.
    MgcBezierPatchG (unsigned int uiDegree, unsigned int uiCtrlQuantity,
        MgcVector3* akCtrlPoint);

    // tessellation
    virtual void Initialize (unsigned int uiLevel, bool bWantNormals) = 0;

    // patch data
    unsigned int m_uiDegree;
    unsigned int m_uiCtrlQuantity;
    MgcVector3* m_akCtrlPoint;

    // tessellation data
    unsigned int m_uiVertexQuantity;
    MgcVector3* m_akVertex;
    MgcVector3* m_akNormal;
    unsigned int m_uiTriangleQuantity;
    unsigned int* m_auiConnect;
};

#include "MgcBezierPatchG.inl"

#endif