/* -*- 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 <osl/diagnose.h>

#include <basegfx/polygon/b3dpolypolygon.hxx>

#include <basegfx/polygon/b3dpolygon.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>

#include <basegfx/matrix/b3dhommatrix.hxx>

#include <utility>

#include <vector>

class ImplB3DPolyPolygon

{

    typedef std::vector< ::basegfx::B3DPolygon >  PolygonVector;

    PolygonVector                                   maPolygons;

public:

    ImplB3DPolyPolygon()

    {

    }

    explicit ImplB3DPolyPolygon(const ::basegfx::B3DPolygon& rToBeCopied) :

        maPolygons(1,rToBeCopied)

    {

    }

    bool operator==(const ImplB3DPolyPolygon& rPolygonList) const

    {

        // same polygon count?

        if(maPolygons.size() != rPolygonList.maPolygons.size())

            return false;

        // compare polygon content

        if(maPolygons != rPolygonList.maPolygons)

            return false;

        return true;

    }

    const ::basegfx::B3DPolygon& getB3DPolygon(sal_uInt32 nIndex) const

    {

        return maPolygons[nIndex];

    }

    void setB3DPolygon(sal_uInt32 nIndex, const ::basegfx::B3DPolygon& rPolygon)

    {

        maPolygons[nIndex] = rPolygon;

    }

    void insert(sal_uInt32 nIndex, const ::basegfx::B3DPolygon& rPolygon, sal_uInt32 nCount)

    {

        if(nCount)

        {

            // add nCount copies of rPolygon

            PolygonVector::iterator aIndex(maPolygons.begin());

            if( nIndex )

                aIndex += nIndex;

            maPolygons.insert(aIndex, nCount, rPolygon);

        }

    }

    void insert(sal_uInt32 nIndex, const ::basegfx::B3DPolyPolygon& rPolyPolygon)

    {

        // add all polygons from rPolyPolygon

        PolygonVector::iterator aIndex(maPolygons.begin());

        if( nIndex )

            aIndex += nIndex;

        maPolygons.insert(aIndex, rPolyPolygon.begin(), rPolyPolygon.end());

    }

    void remove(sal_uInt32 nIndex, sal_uInt32 nCount)

    {

        if(nCount)

        {

            // remove polygon data

            PolygonVector::iterator aStart(maPolygons.begin());

            aStart += nIndex;

            const PolygonVector::iterator aEnd(aStart + nCount);

            maPolygons.erase(aStart, aEnd);

        }

    }

    sal_uInt32 count() const

    {

        return maPolygons.size();

    }

    void flip()

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.flip();

    }

    void removeDoublePoints()

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.removeDoublePoints();

    }

    void transform(const ::basegfx::B3DHomMatrix& rMatrix)

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.transform(rMatrix);

    }

    void clearBColors()

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.clearBColors();

    }

    void transformNormals(const ::basegfx::B3DHomMatrix& rMatrix)

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.transformNormals(rMatrix);

    }

    void clearNormals()

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.clearNormals();

    }

    void transformTextureCoordinates(const ::basegfx::B2DHomMatrix& rMatrix)

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.transformTextureCoordinates(rMatrix);

    }

    void clearTextureCoordinates()

    {

        for (auto& aPolygon : maPolygons)

            aPolygon.clearTextureCoordinates();

    }

    const basegfx::B3DPolygon* begin() const

    {

        if (maPolygons.empty())

            return nullptr;

        else

            return maPolygons.data();

    }

    const basegfx::B3DPolygon* end() const

    {

        if (maPolygons.empty())

            return nullptr;

        else

            return maPolygons.data() + maPolygons.size();

    }

    basegfx::B3DPolygon* begin()

    {

        if (maPolygons.empty())

            return nullptr;

        else

            return maPolygons.data();

    }

    basegfx::B3DPolygon* end()

    {

        if (maPolygons.empty())

            return nullptr;

        else

            return maPolygons.data() + maPolygons.size();

    }

};

namespace basegfx

{

    namespace {

    B3DPolyPolygon::ImplType const & getDefaultPolyPolygon() {

        static B3DPolyPolygon::ImplType const singleton;

        return singleton;

    }

    }

    B3DPolyPolygon::B3DPolyPolygon() :

        mpPolyPolygon(getDefaultPolyPolygon())

    {

    }

    B3DPolyPolygon::B3DPolyPolygon(const B3DPolyPolygon&) = default;

    B3DPolyPolygon::B3DPolyPolygon(B3DPolyPolygon&&) = default;

    B3DPolyPolygon::B3DPolyPolygon(const B3DPolygon& rPolygon) :

        mpPolyPolygon( ImplB3DPolyPolygon(rPolygon) )

    {

    }

    B3DPolyPolygon::~B3DPolyPolygon() = default;

    B3DPolyPolygon& B3DPolyPolygon::operator=(const B3DPolyPolygon&) = default;

    B3DPolyPolygon& B3DPolyPolygon::operator=(B3DPolyPolygon&&) = default;

    bool B3DPolyPolygon::operator==(const B3DPolyPolygon& rPolyPolygon) const

    {

        if(mpPolyPolygon.same_object(rPolyPolygon.mpPolyPolygon))

            return true;

        return ((*mpPolyPolygon) == (*rPolyPolygon.mpPolyPolygon));

    }

    sal_uInt32 B3DPolyPolygon::count() const

    {

        return mpPolyPolygon->count();

    }

    B3DPolygon const & B3DPolyPolygon::getB3DPolygon(sal_uInt32 nIndex) const

    {

        OSL_ENSURE(nIndex < mpPolyPolygon->count(), "B3DPolyPolygon access outside range (!)");

        return mpPolyPolygon->getB3DPolygon(nIndex);

    }

    void B3DPolyPolygon::setB3DPolygon(sal_uInt32 nIndex, const B3DPolygon& rPolygon)

    {

        OSL_ENSURE(nIndex < std::as_const(mpPolyPolygon)->count(), "B3DPolyPolygon access outside range (!)");

        if(getB3DPolygon(nIndex) != rPolygon)

            mpPolyPolygon->setB3DPolygon(nIndex, rPolygon);

    }

    bool B3DPolyPolygon::areBColorsUsed() const

    {

        for(sal_uInt32 a(0); a < mpPolyPolygon->count(); a++)

        {

            if(mpPolyPolygon->getB3DPolygon(a).areBColorsUsed())

            {

                return true;

            }

        }

        return false;

    }

    void B3DPolyPolygon::clearBColors()

    {

        if(areBColorsUsed())

            mpPolyPolygon->clearBColors();

    }

    void B3DPolyPolygon::transformNormals(const B3DHomMatrix& rMatrix)

    {

        if(!rMatrix.isIdentity())

            mpPolyPolygon->transformNormals(rMatrix);

    }

    bool B3DPolyPolygon::areNormalsUsed() const

    {

        for(sal_uInt32 a(0); a < mpPolyPolygon->count(); a++)

        {

            if(mpPolyPolygon->getB3DPolygon(a).areNormalsUsed())

            {

                return true;

            }

        }

        return false;

    }

    void B3DPolyPolygon::clearNormals()

    {

        if(areNormalsUsed())

            mpPolyPolygon->clearNormals();

    }

    void B3DPolyPolygon::transformTextureCoordinates(const B2DHomMatrix& rMatrix)

    {

        if(!rMatrix.isIdentity())

            mpPolyPolygon->transformTextureCoordinates(rMatrix);

    }

    bool B3DPolyPolygon::areTextureCoordinatesUsed() const

    {

        for(sal_uInt32 a(0); a < mpPolyPolygon->count(); a++)

        {

            if(mpPolyPolygon->getB3DPolygon(a).areTextureCoordinatesUsed())

            {

                return true;

            }

        }

        return false;

    }

    void B3DPolyPolygon::clearTextureCoordinates()

    {

        if(areTextureCoordinatesUsed())

            mpPolyPolygon->clearTextureCoordinates();

    }

    void B3DPolyPolygon::append(const B3DPolygon& rPolygon, sal_uInt32 nCount)

    {

        if(nCount)

            mpPolyPolygon->insert(std::as_const(mpPolyPolygon)->count(), rPolygon, nCount);

    }

    void B3DPolyPolygon::append(const B3DPolyPolygon& rPolyPolygon)

    {

        if(rPolyPolygon.count())

            mpPolyPolygon->insert(std::as_const(mpPolyPolygon)->count(), rPolyPolygon);

    }

    void B3DPolyPolygon::remove(sal_uInt32 nIndex, sal_uInt32 nCount)

    {

        OSL_ENSURE(nIndex + nCount <= std::as_const(mpPolyPolygon)->count(), "B3DPolyPolygon Remove outside range (!)");

        if(nCount)

            mpPolyPolygon->remove(nIndex, nCount);

    }

    void B3DPolyPolygon::clear()

    {

        mpPolyPolygon = getDefaultPolyPolygon();

    }

    void B3DPolyPolygon::flip()

    {

        mpPolyPolygon->flip();

    }

    bool B3DPolyPolygon::hasDoublePoints() const

    {

        bool bRetval(false);

        for(sal_uInt32 a(0); !bRetval && a < mpPolyPolygon->count(); a++)

        {

            if(mpPolyPolygon->getB3DPolygon(a).hasDoublePoints())

            {

                bRetval = true;

            }

        }

        return bRetval;

    }

    void B3DPolyPolygon::removeDoublePoints()

    {

        if(hasDoublePoints())

            mpPolyPolygon->removeDoublePoints();

    }

    void B3DPolyPolygon::transform(const B3DHomMatrix& rMatrix)

    {

        if(std::as_const(mpPolyPolygon)->count() && !rMatrix.isIdentity())

        {

            mpPolyPolygon->transform(rMatrix);

        }

    }

    const B3DPolygon* B3DPolyPolygon::begin() const

    {

        return mpPolyPolygon->begin();

    }

    const B3DPolygon* B3DPolyPolygon::end() const

    {

        return mpPolyPolygon->end();

    }

    B3DPolygon* B3DPolyPolygon::begin()

    {

        return mpPolyPolygon->begin();

    }

    B3DPolygon* B3DPolyPolygon::end()

    {

        return mpPolyPolygon->end();

    }

} // end of namespace basegfx

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