glcolortable.hpp

ncbi源码

/*
 * ===========================================================================
 * PRODUCTION $Log: glcolortable.hpp,v $
 * PRODUCTION Revision 1000.1  2004/06/01 19:49:40  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6
 * PRODUCTION
 * ===========================================================================
 */

#ifndef GUI_OPENGL___GL_COLOR_TABLE__HPP
#define GUI_OPENGL___GL_COLOR_TABLE__HPP

/*  $Id: glcolortable.hpp,v 1000.1 2004/06/01 19:49:40 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Mike DiCuccio
 *
 * File Description:
 *    Incremental and mutually contrastive color table generator.
 */


#include <corelib/ncbistd.hpp>
#include <gui/opengl/glcolor.hpp>

/** @addtogroup GUI_OPENGL
 *
 * @{
 */


BEGIN_NCBI_SCOPE


class NCBI_GUIOPENGL_EXPORT CGlColorTable
{
public:

    CGlColorTable();
    CGlColorTable(int items, float min_color = 0.0f, float max_color = 1.0f);

    void    SetMaxItems(int items);
    void    SetMinColor(float f);
    void    SetMinColor(unsigned char f);
    void    SetMaxColor(float f);
    void    SetMaxColor(unsigned char f);

    CGlColor    GetColor(int i) const;

private:
    int m_MaxItems;
    float m_ColorStep;
    float m_MinColor;
    float m_MaxColor;
    float m_ColorDiff;

    void x_CalcColorStep();
};


inline
void CGlColorTable::SetMaxItems(int items)
{
    m_MaxItems = max(8, items);
    x_CalcColorStep();
}


inline
void CGlColorTable::SetMinColor(float f)
{
    m_MinColor = max(0.0f, f);
    m_MinColor = min(1.0f, m_MinColor);
    if (m_MaxColor < m_MinColor) {
        std::swap(m_MaxColor, m_MinColor);
    }
    m_ColorDiff = m_MaxColor - m_MinColor;
    x_CalcColorStep();
}


inline
void CGlColorTable::SetMinColor(unsigned char c)
{
    SetMinColor(float (c) / 255.0f);
}


inline
void CGlColorTable::SetMaxColor(float f)
{
    m_MaxColor = max(0.0f, f);
    m_MaxColor = min(1.0f, m_MaxColor);
    if (m_MaxColor < m_MinColor) {
        std::swap(m_MaxColor, m_MinColor);
    }
    m_ColorDiff = m_MaxColor - m_MinColor;
    x_CalcColorStep();
}


inline
void CGlColorTable::SetMaxColor(unsigned char c)
{
    SetMinColor(float (c) / 255.0f);
}


inline
void CGlColorTable::x_CalcColorStep()
{
    m_ColorStep = m_ColorDiff / m_MaxItems * 8;
}


END_NCBI_SCOPE

/* @} */



/*
 * ===========================================================================
 * $Log: glcolortable.hpp,v $
 * Revision 1000.1  2004/06/01 19:49:40  gouriano
 * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6
 *
 * Revision 1.6  2004/05/11 18:54:22  dicuccio
 * Added doxygne modules info
 *
 * Revision 1.5  2003/09/29 15:20:07  dicuccio
 * Deprecated gui/scope.hpp.  Merged gui/core/types.hpp into gui/types.hpp
 *
 * Revision 1.4  2003/01/15 20:57:01  dicuccio
 * Must remember to recalculate color step if the bounds change
 *
 * Revision 1.3  2003/01/13 13:11:42  dicuccio
 * Namespace clean-up.  Retired namespace gui -> converted to namespace ncbi.
 * Moved all FLUID-generated code into namespace ncbi.
 *
 * Revision 1.2  2002/12/19 18:13:03  dicuccio
 * Added export specifiers for Win32.
 *
 * Revision 1.1  2002/11/22 18:06:42  dicuccio
 * Initial revision.
 *
 * ===========================================================================
 */


#endif  // GUI_OPENGL___GL_COLOR_TABLE__HPP