/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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 <Linear3DTransformation.hxx>
#include <algorithm>

using namespace ::com::sun::star;

using ::com::sun::star::uno::Sequence;

namespace chart
{

    Linear3DTransformation::Linear3DTransformation( const drawing::HomogenMatrix& rHomMatrix, bool bSwapXAndY )
    : m_Matrix(rHomMatrix)
    , m_bSwapXAndY(bSwapXAndY)
{}

Linear3DTransformation::~Linear3DTransformation()
{}

// ____ XTransformation ____
Sequence< double > SAL_CALL Linear3DTransformation::transform(
                        const Sequence< double >& rSourceValues )
{
    double fX = rSourceValues[0];
    double fY = rSourceValues[1];
    double fZ = rSourceValues[2];
    if(m_bSwapXAndY)
        std::swap(fX,fY);
    Sequence< double > aNewVec(3);
    double fZwi;

    fZwi = m_Matrix.Line1.Column1 * fX
         + m_Matrix.Line1.Column2 * fY
         + m_Matrix.Line1.Column3 * fZ
         + m_Matrix.Line1.Column4;
    aNewVec[0] = fZwi;

    fZwi = m_Matrix.Line2.Column1 * fX
         + m_Matrix.Line2.Column2 * fY
         + m_Matrix.Line2.Column3 * fZ
         + m_Matrix.Line2.Column4;
    aNewVec[1] = fZwi;

    fZwi = m_Matrix.Line3.Column1 * fX
         + m_Matrix.Line3.Column2 * fY
         + m_Matrix.Line3.Column3 * fZ
         + m_Matrix.Line3.Column4;
    aNewVec[2] = fZwi;

    fZwi = m_Matrix.Line4.Column1 * fX
         + m_Matrix.Line4.Column2 * fY
         + m_Matrix.Line4.Column3 * fZ
         + m_Matrix.Line4.Column4;
    if(fZwi != 1.0 && fZwi != 0.0)
    {
        aNewVec[0] /= fZwi;
        aNewVec[1] /= fZwi;
        aNewVec[2] /= fZwi;
    }
    return aNewVec;
}

sal_Int32 SAL_CALL Linear3DTransformation::getSourceDimension()
{
    return 3;
}

sal_Int32 SAL_CALL Linear3DTransformation::getTargetDimension()
{
    return 3;
}

}  // namespace chart

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