color.h

很多二维 三维几何计算算法 C++ 类库

// Copyright (c) 1997  Utrecht University (The Netherlands),
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
// and Tel-Aviv University (Israel).  All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; version 2.1 of the License.
// See the file LICENSE.LGPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.3-branch/iostream/include/CGAL/IO/Color.h $
// $Id: Color.h 28567 2006-02-16 14:30:13Z lsaboret $
// 
//
// Author(s)     : Andreas Fabri

#include <CGAL/config.h>

#ifndef CGAL_COLOR_H
#define CGAL_COLOR_H

CGAL_BEGIN_NAMESPACE

class Color {
public:
  Color() {}
  Color(unsigned char red, 
	unsigned char green, 
	unsigned char blue, 
	unsigned char alpha = 120)
    : _red(red), _green(green), _blue(blue), _alpha(alpha)
  {}

  unsigned char r() const {return _red;}
  unsigned char g() const {return _green;}
  unsigned char b() const {return _blue;}

  unsigned char red() const {return _red;}
  unsigned char green() const {return _green;}
  unsigned char blue() const {return _blue;}
  unsigned char alpha() const {return _alpha;}
  void set_alpha(unsigned char a) {_alpha=a;}
  bool operator==(const Color &c) const
  {
    return ( (red() == c.red()) &&
             (green() == c.green()) &&
             (blue() == c.blue()) );
  }

  bool operator!=(const Color &c) const
  {
    return !( (*this) == c);
  }

  Color& operator=(const Color &c)
  {
    _red = c.red();
    _green = c.green();
    _blue = c.blue();
    _alpha = c.alpha();
    return *this;
  }

private:
  unsigned char _red;
  unsigned char _green;
  unsigned char _blue;
  unsigned char _alpha;
};


extern const Color BLACK  ;
extern const Color WHITE  ;
extern const Color GRAY  ;

extern const Color RED    ;
extern const Color GREEN  ;

extern const Color DEEPBLUE  ;
extern const Color BLUE   ;
extern const Color PURPLE ;
extern const Color VIOLET ;

extern const Color ORANGE ;
extern const Color YELLOW ;


CGAL_END_NAMESPACE

#endif  // CGAL_COLOR_H