mgcbox3.cpp

3D Game Engine Design Source Code非常棒

// 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

#include "MgcBox3.h"

//----------------------------------------------------------------------------
void MgcBox3::ComputeVertices (MgcVector3 akVertex[8]) const
{
    MgcVector3 akEAxis[3] =
    {
        m_afExtent[0]*m_akAxis[0],
        m_afExtent[1]*m_akAxis[1],
        m_afExtent[2]*m_akAxis[2]
    };

    akVertex[0] = m_kCenter - akEAxis[0] - akEAxis[1] - akEAxis[2];
    akVertex[1] = m_kCenter + akEAxis[0] - akEAxis[1] - akEAxis[2];
    akVertex[2] = m_kCenter + akEAxis[0] + akEAxis[1] - akEAxis[2];
    akVertex[3] = m_kCenter - akEAxis[0] + akEAxis[1] - akEAxis[2];
    akVertex[4] = m_kCenter - akEAxis[0] - akEAxis[1] + akEAxis[2];
    akVertex[5] = m_kCenter + akEAxis[0] - akEAxis[1] + akEAxis[2];
    akVertex[6] = m_kCenter + akEAxis[0] + akEAxis[1] + akEAxis[2];
    akVertex[7] = m_kCenter - akEAxis[0] + akEAxis[1] + akEAxis[2];
}
//----------------------------------------------------------------------------