/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSG_VEC2I
#define OSG_VEC2I        1

namespace osg {

/** General purpose integer pair.
*/
class Vec2i
{
    public:

        /** Type of Vec class.*/
        typedef int value_type;

        /** Number of vector components. */
        enum { num_components = 2 };
        
        /** Vec member variable. */
        value_type _v[2];

        Vec2i() { _v[0]=0; _v[1]=0; }

        Vec2i(value_type x, value_type y) { _v[0] = x; _v[1] = y; }

        inline bool operator == (const Vec2i& v) const { return _v[0]==v._v[0] && _v[1]==v._v[1]; }
        inline bool operator != (const Vec2i& v) const { return _v[0]!=v._v[0] || _v[1]!=v._v[1]; }
        inline bool operator <  (const Vec2i& v) const
        {
            if (_v[0]<v._v[0])      return true;
            else if (_v[0]>v._v[0]) return false;
            else return (_v[1]<v._v[1]);
        }

        inline value_type* ptr() { return _v; }
        inline const value_type* ptr() const { return _v; }

        inline void set( value_type x, value_type y)
        {
            _v[0]=x; _v[1]=y;
        }

        inline void set( const Vec2i& rhs)
        {
            _v[0]=rhs._v[0]; _v[1]=rhs._v[1];
        }

        inline value_type& operator [] (int i) { return _v[i]; }
        inline value_type operator [] (int i) const { return _v[i]; }

        inline value_type& x() { return _v[0]; }
        inline value_type& y() { return _v[1]; }

        inline value_type x() const { return _v[0]; }
        inline value_type y() const { return _v[1]; }

        inline value_type& r() { return _v[0]; }
        inline value_type& g() { return _v[1]; }

        inline value_type r() const { return _v[0]; }
        inline value_type g() const { return _v[1]; }

        inline Vec2i operator * (value_type rhs) const
        {
            return Vec2i(_v[0]*rhs, _v[1]*rhs);
        }

        inline Vec2i operator / (value_type rhs) const
        {
            return Vec2i(_v[0]/rhs, _v[1]/rhs);
        }

        inline Vec2i operator + (value_type rhs) const
        {
            return Vec2i(_v[0]+rhs, _v[1]+rhs);
        }

        inline Vec2i operator - (value_type rhs) const
        {
            return Vec2i(_v[0]-rhs, _v[1]-rhs);
        }

        inline Vec2i operator + (const Vec2i& rhs) const
        {
            return Vec2i(_v[0]+rhs._v[0], _v[1]+rhs._v[1]);
        }

        inline Vec2i operator - (const Vec2i& rhs) const
        {
            return Vec2i(_v[0]-rhs._v[0], _v[1]-rhs._v[1]);
        }

        inline Vec2i operator * (const Vec2i& rhs) const
        {
            return Vec2i(_v[0]*rhs._v[0], _v[1]*rhs._v[1]);
        }

};

}

#endif
