libreoffice/basegfx/source/tuple/b2ituple.cxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: b2ituple.cxx,v $
 *
 *  $Revision: 1.4 $
 *
 *  last change: $Author: rt $ $Date: 2005-09-07 20:52:45 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    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 GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#ifndef _BGFX_TUPLE_B2ITUPLE_HXX
#include <basegfx/tuple/b2ituple.hxx>
#endif
#ifndef _BGFX_TUPLE_B2DTUPLE_HXX
#include <basegfx/tuple/b2dtuple.hxx>
#endif
#ifndef INCLUDED_RTL_INSTANCE_HXX
#include <rtl/instance.hxx>
#endif

namespace { struct EmptyTuple : public rtl::Static<basegfx::B2ITuple, EmptyTuple> {}; }

namespace basegfx
{
    const B2ITuple& B2ITuple::getEmptyTuple()
    {
            return EmptyTuple::get();
    }

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

    B2ITuple minimum(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aMin(
            (rTupB.getX() < rTupA.getX()) ? rTupB.getX() : rTupA.getX(),
            (rTupB.getY() < rTupA.getY()) ? rTupB.getY() : rTupA.getY());
        return aMin;
    }

    B2ITuple maximum(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aMax(
            (rTupB.getX() > rTupA.getX()) ? rTupB.getX() : rTupA.getX(),
            (rTupB.getY() > rTupA.getY()) ? rTupB.getY() : rTupA.getY());
        return aMax;
    }

    B2ITuple absolute(const B2ITuple& rTup)
    {
        B2ITuple aAbs(
            (0 > rTup.getX()) ? -rTup.getX() : rTup.getX(),
            (0 > rTup.getY()) ? -rTup.getY() : rTup.getY());
        return aAbs;
    }

    B2DTuple interpolate(const B2ITuple& rOld1, const B2ITuple& rOld2, double t)
    {
        B2DTuple aInt(
            ((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(),
            ((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY());
        return aInt;
    }

    B2DTuple average(const B2ITuple& rOld1, const B2ITuple& rOld2)
    {
        B2DTuple aAvg(
            (rOld1.getX() + rOld2.getX()) * 0.5,
            (rOld1.getY() + rOld2.getY()) * 0.5);
        return aAvg;
    }

    B2DTuple average(const B2ITuple& rOld1, const B2ITuple& rOld2, const B2ITuple& 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;
    }

    B2ITuple operator+(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aSum(rTupA);
        aSum += rTupB;
        return aSum;
    }

    B2ITuple operator-(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aSub(rTupA);
        aSub -= rTupB;
        return aSub;
    }

    B2ITuple operator/(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aDiv(rTupA);
        aDiv /= rTupB;
        return aDiv;
    }

    B2ITuple operator*(const B2ITuple& rTupA, const B2ITuple& rTupB)
    {
        B2ITuple aMul(rTupA);
        aMul *= rTupB;
        return aMul;
    }

    B2ITuple operator*(const B2ITuple& rTup, sal_Int32 t)
    {
        B2ITuple aNew(rTup);
        aNew *= t;
        return aNew;
    }

    B2ITuple operator*(sal_Int32 t, const B2ITuple& rTup)
    {
        B2ITuple aNew(rTup);
        aNew *= t;
        return aNew;
    }

    B2ITuple operator/(const B2ITuple& rTup, sal_Int32 t)
    {
        B2ITuple aNew(rTup);
        aNew /= t;
        return aNew;
    }

    B2ITuple operator/(sal_Int32 t, const B2ITuple& rTup)
    {
        B2ITuple aNew(t, t);
        B2ITuple aTmp(rTup);
        aNew /= aTmp;
        return aNew;
    }

} // end of namespace basegfx

// eof