/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#include <tools/gen.hxx>

void PointTemplateBase::RotateAround( PointTemplateBase& rPoint,

                          Degree10 nOrientation ) const

{

    tools::Long nX = rPoint.mnA;

    tools::Long nY = rPoint.mnB;

    RotateAround(nX, nY, nOrientation);

    rPoint.mnA = nX;

    rPoint.mnB = nY;

}

void PointTemplateBase::RotateAround( tools::Long& rX, tools::Long& rY,

                          Degree10 nOrientation ) const

{

    const tools::Long nOriginX = mnA;

    const tools::Long nOriginY = mnB;

    if ( (nOrientation >= 0_deg10) && !(nOrientation % 900_deg10) )

    {

        if ( nOrientation >= 3600_deg10 )

            nOrientation %= 3600_deg10;

        if ( nOrientation )

        {

            rX -= nOriginX;

            rY -= nOriginY;

            if ( nOrientation == 900_deg10 )

            {

                tools::Long nTemp = rX;

                rX = rY;

                rY = -nTemp;

            }

            else if ( nOrientation == 1800_deg10 )

            {

                rX = -rX;

                rY = -rY;

            }

            else /* ( nOrientation == 2700 ) */

            {

                tools::Long nTemp = rX;

                rX = -rY;

                rY = nTemp;

            }

            rX += nOriginX;

            rY += nOriginY;

        }

    }

    else

    {

        double nRealOrientation = toRadians(nOrientation);

        double nCos = cos( nRealOrientation );

        double nSin = sin( nRealOrientation );

        // Translation...

        tools::Long nX = rX-nOriginX;

        tools::Long nY = rY-nOriginY;

        // Rotation...

        rX = + static_cast<tools::Long>(nCos*nX + nSin*nY) + nOriginX;

        rY = - static_cast<tools::Long>(nSin*nX - nCos*nY) + nOriginY;

    }

}

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