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/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef _BGFX_TUPLE_B2I64TUPLE_HXX
#define _BGFX_TUPLE_B2I64TUPLE_HXX

#include <sal/types.h>
#include <basegfx/tuple/b2dtuple.hxx>
#include <basegfx/basegfxdllapi.h>


namespace basegfx
{
    /** Base class for all Points/Vectors with two sal_Int64 values

        This class provides all methods common to Point
        avd Vector classes which are derived from here.

        @derive Use this class to implement Points or Vectors
        which are based on two sal_Int64 values
    */
    class BASEGFX_DLLPUBLIC B2I64Tuple
    {
    protected:
        sal_Int64                                       mnX;
        sal_Int64                                       mnY;

    public:
        /** Create a 2D Tuple

            The tuple is initialized to (0, 0)
        */
        B2I64Tuple()
        :   mnX(0),
            mnY(0)
        {}

        /** Create a 2D Tuple

            @param fX
            This parameter is used to initialize the X-coordinate
            of the 2D Tuple.

            @param fY
            This parameter is used to initialize the Y-coordinate
            of the 2D Tuple.
        */
        B2I64Tuple(sal_Int64 fX, sal_Int64 fY)
        :   mnX( fX ),
            mnY( fY )
        {}

        /** Create a copy of a 2D Tuple

            @param rTup
            The 2D Tuple which will be copied.
        */
        B2I64Tuple(const B2I64Tuple& rTup)
        :   mnX( rTup.mnX ),
            mnY( rTup.mnY )
        {}

        ~B2I64Tuple()
        {}

        /// Get X-Coordinate of 2D Tuple
        sal_Int64 getX() const
        {
            return mnX;
        }

        /// Get Y-Coordinate of 2D Tuple
        sal_Int64 getY() const
        {
            return mnY;
        }

        /// Set X-Coordinate of 2D Tuple
        void setX(sal_Int64 fX)
        {
            mnX = fX;
        }

        /// Set Y-Coordinate of 2D Tuple
        void setY(sal_Int64 fY)
        {
            mnY = fY;
        }

        /// Array-access to 2D Tuple
        const sal_Int64& operator[] (int nPos) const
        {
            // Here, normally one if(...) should be used. In the assumption that
            // both sal_Int64 members can be accessed as an array a shortcut is used here.
            // if(0 == nPos) return mnX; return mnY;
            return *((&mnX) + nPos);
        }

        /// Array-access to 2D Tuple
        sal_Int64& operator[] (int nPos)
        {
            // Here, normally one if(...) should be used. In the assumption that
            // both sal_Int64 members can be accessed as an array a shortcut is used here.
            // if(0 == nPos) return mnX; return mnY;
            return *((&mnX) + nPos);
        }

        // operators
        //////////////////////////////////////////////////////////////////////

        B2I64Tuple& operator+=( const B2I64Tuple& rTup )
        {
            mnX += rTup.mnX;
            mnY += rTup.mnY;
            return *this;
        }

        B2I64Tuple& operator-=( const B2I64Tuple& rTup )
        {
            mnX -= rTup.mnX;
            mnY -= rTup.mnY;
            return *this;
        }

        B2I64Tuple& operator/=( const B2I64Tuple& rTup )
        {
            mnX /= rTup.mnX;
            mnY /= rTup.mnY;
            return *this;
        }

        B2I64Tuple& operator*=( const B2I64Tuple& rTup )
        {
            mnX *= rTup.mnX;
            mnY *= rTup.mnY;
            return *this;
        }

        B2I64Tuple& operator*=(sal_Int64 t)
        {
            mnX *= t;
            mnY *= t;
            return *this;
        }

        B2I64Tuple& operator/=(sal_Int64 t)
        {
            mnX /= t;
            mnY /= t;
            return *this;
        }

        B2I64Tuple operator-(void) const
        {
            return B2I64Tuple(-mnX, -mnY);
        }

        bool equalZero() const { return mnX == 0 && mnY == 0; }

        bool operator==( const B2I64Tuple& rTup ) const
        {
            return this == &rTup || (rTup.mnX == mnX && rTup.mnY == mnY);
        }

        bool operator!=( const B2I64Tuple& rTup ) const
        {
            return !(*this == rTup);
        }

        B2I64Tuple& operator=( const B2I64Tuple& rTup )
        {
            mnX = rTup.mnX;
            mnY = rTup.mnY;
            return *this;
        }

        static const B2I64Tuple& getEmptyTuple();
    };

    // external operators
    //////////////////////////////////////////////////////////////////////////

    inline B2I64Tuple minimum(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aMin(
            (rTupB.getX() < rTupA.getX()) ? rTupB.getX() : rTupA.getX(),
            (rTupB.getY() < rTupA.getY()) ? rTupB.getY() : rTupA.getY());
        return aMin;
    }

    inline B2I64Tuple maximum(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aMax(
            (rTupB.getX() > rTupA.getX()) ? rTupB.getX() : rTupA.getX(),
            (rTupB.getY() > rTupA.getY()) ? rTupB.getY() : rTupA.getY());
        return aMax;
    }

    inline B2I64Tuple absolute(const B2I64Tuple& rTup)
    {
        B2I64Tuple aAbs(
            (0 > rTup.getX()) ? -rTup.getX() : rTup.getX(),
            (0 > rTup.getY()) ? -rTup.getY() : rTup.getY());
        return aAbs;
    }

    inline B2DTuple interpolate(const B2I64Tuple& rOld1, const B2I64Tuple& rOld2, double t)
    {
        B2DTuple aInt(
            ((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(),
            ((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY());
        return aInt;
    }

    inline B2DTuple average(const B2I64Tuple& rOld1, const B2I64Tuple& rOld2)
    {
        B2DTuple aAvg(
            (rOld1.getX() + rOld2.getX()) * 0.5,
            (rOld1.getY() + rOld2.getY()) * 0.5);
        return aAvg;
    }

    inline B2DTuple average(const B2I64Tuple& rOld1, const B2I64Tuple& rOld2, const B2I64Tuple& rOld3)
    {
        B2DTuple aAvg(
            (rOld1.getX() + rOld2.getX() + rOld3.getX()) * (1.0 / 3.0),
            (rOld1.getY() + rOld2.getY() + rOld3.getY()) * (1.0 / 3.0));
        return aAvg;
    }

    inline B2I64Tuple operator+(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aSum(rTupA);
        aSum += rTupB;
        return aSum;
    }

    inline B2I64Tuple operator-(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aSub(rTupA);
        aSub -= rTupB;
        return aSub;
    }

    inline B2I64Tuple operator/(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aDiv(rTupA);
        aDiv /= rTupB;
        return aDiv;
    }

    inline B2I64Tuple operator*(const B2I64Tuple& rTupA, const B2I64Tuple& rTupB)
    {
        B2I64Tuple aMul(rTupA);
        aMul *= rTupB;
        return aMul;
    }

    inline B2I64Tuple operator*(const B2I64Tuple& rTup, sal_Int64 t)
    {
        B2I64Tuple aNew(rTup);
        aNew *= t;
        return aNew;
    }

    inline B2I64Tuple operator*(sal_Int64 t, const B2I64Tuple& rTup)
    {
        B2I64Tuple aNew(rTup);
        aNew *= t;
        return aNew;
    }

    inline B2I64Tuple operator/(const B2I64Tuple& rTup, sal_Int64 t)
    {
        B2I64Tuple aNew(rTup);
        aNew /= t;
        return aNew;
    }

    inline B2I64Tuple operator/(sal_Int64 t, const B2I64Tuple& rTup)
    {
        B2I64Tuple aNew(t, t);
        B2I64Tuple aTmp(rTup);
        aNew /= aTmp;
        return aNew;
    }
} // end of namespace basegfx

#endif /* _BGFX_TUPLE_B2I64TUPLE_HXX */