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BBox2C.h

//-------------------------------------------------------------------------
//
// File:        BBox2C.h
// Desc:        2D bounding box class.
// Author:      memon <memon@inside.org>
//
//-------------------------------------------------------------------------
//  Copyright (c) 2000-2002 Moppi Productions. All Rights Reserved.
//  This file is part of Moppi Demopaja SDK. For conditions of 
//  distribution and use, see the accompanying license.txt file.
//  http://moppi.inside.org/demopaja/
//-------------------------------------------------------------------------

#ifndef __DEMOPAJA_BBOX2C_H__
#define __DEMOPAJA_BBOX2C_H__

#include <math.h>
#include "PajaTypes.h"
#include "Vector2C.h"

namespace PajaTypes {



    class BBox2C
    {
    public:
        BBox2C();
        
        BBox2C( const Vector2C& rMin, const Vector2C& rMax );
        
        BBox2C( const BBox2C& rBBox );
        
        virtual ~BBox2C();


        float32             width() const;


        float32             height() const;


        Vector2C            center() const;
        

        Vector2C            size() const;
        

        bool                contains( const Vector2C& rVec ) const;
        

        bool                contains( const BBox2C& rBBox ) const;
        

        BBox2C              trim( const BBox2C& rBBox ) const;
        

        BBox2C              normalize() const;
        

        BBox2C              offset( const Vector2C& rOffset ) const;
        

        BBox2C              combine( const BBox2C& rBBox ) const;


        Vector2C&           operator[]( int i );


        const Vector2C&     operator[]( int i ) const;


        bool                operator==( const BBox2C& rBBox ) const;


        bool                operator!=( const BBox2C& rBBox ) const;

    private:
        Vector2C    m_rMin, m_rMax;
    };


    inline
    float32
    BBox2C::width() const
    {
        return (float32)fabs( m_rMax[0] - m_rMin[0] );
    }
    
    inline
    float32
    BBox2C::height() const
    {
        return (float32)fabs( m_rMax[1] - m_rMin[1] );
    }
    
    inline
    Vector2C
    BBox2C::center() const
    {
        return (m_rMin + m_rMax) * 0.5;
    }

    inline
    Vector2C
    BBox2C::size() const
    {
        return m_rMax - m_rMin;
    }
    
    inline
    bool
    BBox2C::contains( const Vector2C& rVec ) const
    {
        return (rVec[0] >= m_rMin[0] && rVec[0] <= m_rMax[0] && rVec[1] >= m_rMin[1] && rVec[1] <= m_rMax[1]);
    }
    
    inline
    bool
    BBox2C::contains( const BBox2C& rBBox ) const
    {
        return (contains( rBBox.m_rMin ) && contains( rBBox.m_rMax ));
    }

    inline
    Vector2C&
    BBox2C::operator[]( int i )
    {
        return (i == 0) ? m_rMin : m_rMax;
    }
    
    inline
    const Vector2C&
    BBox2C::operator[]( int i ) const
    {
        return (i == 0) ? m_rMin : m_rMax;
    }
    
    inline
    bool
    BBox2C::operator==( const BBox2C& rBBox ) const
    {
        return (m_rMin == rBBox.m_rMin && m_rMax == rBBox.m_rMax);
    }
    
    inline
    bool
    BBox2C::operator!=( const BBox2C& rBBox ) const
    {
        return (m_rMin != rBBox.m_rMin || m_rMax != rBBox.m_rMax);
    }

    inline
    BBox2C
    BBox2C::offset( const Vector2C& rOffset ) const
    {
        BBox2C  rRes( *this );

        rRes.m_rMin += rOffset;
        rRes.m_rMax += rOffset;

        return rRes;
    }



};  // PajaTypes

#endif // __DEMOPAJA_BBOX2C_H__

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