mgcsoftcolor.inl

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
//
// RESTRICTED USE SOURCE CODE
// http://www.magic-software.com/License/restricted.pdf

//---------------------------------------------------------------------------
inline MgcSoftColor::MgcSoftColor (unsigned short usColor)
{
    m_usColor = usColor;
}
//---------------------------------------------------------------------------
inline MgcSoftColor::MgcSoftColor (int iR, int iG, int iB)
{
    // This is 'inline' because the rasterizers make heavy use of the
    // conversion.

    // assert:  0 <= iR < 256 and 0 <= iG < 256 and 0 <= iB < 256

    // map [0,256) to [0,32)
    iR >>= 3;
    iG >>= 3;
    iB >>= 3;

    // map to 1555-format
    m_usColor = (iB | (iG << 5 ) | (iR << 10));
}
//---------------------------------------------------------------------------
inline int MgcSoftColor::GetR () const
{
    // get 8-bit color value
    int iR = (m_usColor & 0x7C00) >> 7;
    return iR;
}
//---------------------------------------------------------------------------
inline int MgcSoftColor::GetG () const
{
    // get 8-bit color value
    int iG = (m_usColor & 0x03E0) >> 2;
    return iG;
}
//---------------------------------------------------------------------------
inline int MgcSoftColor::GetB () const
{
    // get 8-bit color value
    int iB = (m_usColor & 0x001F);
    return iB;
}
//---------------------------------------------------------------------------
inline MgcSoftColor::operator unsigned short ()
{
    return m_usColor;
}
//---------------------------------------------------------------------------