/* -*- 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 <polygn3d.hxx>

#include <svx/svdobjkind.hxx>

#include <basegfx/point/b3dpoint.hxx>

#include <sdr/contact/viewcontactofe3dpolygon.hxx>

#include <basegfx/polygon/b3dpolygon.hxx>

#include <basegfx/polygon/b3dpolygontools.hxx>

// DrawContact section

std::unique_ptr<sdr::contact::ViewContact> E3dPolygonObj::CreateObjectSpecificViewContact()

{

    return std::make_unique<sdr::contact::ViewContactOfE3dPolygon>(*this);

}

E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel, const basegfx::B3DPolyPolygon& rPolyPoly3D)

    : E3dCompoundObject(rSdrModel)

    , bLineOnly(true)

{

    // Set geometry

    SetPolyPolygon3D(rPolyPoly3D);

    // Create default normals

    CreateDefaultNormals();

    // Create default texture coordinates

    CreateDefaultTexture();

}

E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel)

    : E3dCompoundObject(rSdrModel)

    , bLineOnly(false)

{

    // Create no geometry

}

E3dPolygonObj::E3dPolygonObj(SdrModel& rSdrModel, E3dPolygonObj const& rSource)

    : E3dCompoundObject(rSdrModel, rSource)

    , bLineOnly(false)

{

    // Create no geometry

    aPolyPoly3D = rSource.aPolyPoly3D;

    aPolyNormals3D = rSource.aPolyNormals3D;

    aPolyTexture2D = rSource.aPolyTexture2D;

    bLineOnly = rSource.bLineOnly;

}

void E3dPolygonObj::CreateDefaultNormals()

{

    basegfx::B3DPolyPolygon aPolyNormals;

    // Create a complete tools::PolyPolygon with the plane normal

    for (sal_uInt32 a(0); a < aPolyPoly3D.count(); a++)

    {

        // Find source polygon

        const basegfx::B3DPolygon aPolygon(aPolyPoly3D.getB3DPolygon(a));

        // Creating a new polygon for the normal

        basegfx::B3DPolygon aNormals;

        // Get normal (and invert)

        basegfx::B3DVector aNormal(-aPolygon.getNormal());

        // Fill new polygon

        for (sal_uInt32 b(0); b < aPolygon.count(); b++)

        {

            aNormals.append(aNormal);

        }

        // Insert new polygon into the PolyPolygon

        aPolyNormals.append(aNormals);

    }

    // Set default normal

    SetPolyNormals3D(aPolyNormals);

}

void E3dPolygonObj::CreateDefaultTexture()

{

    basegfx::B2DPolyPolygon aPolyTexture;

    // Create a complete tools::PolyPolygon with the texture coordinates

    // The texture coordinates extend over X,Y and Z

    // on the whole extreme values in the range 0.0 .. 1.0

    for (sal_uInt32 a(0); a < aPolyPoly3D.count(); a++)

    {

        // Find source polygon

        const basegfx::B3DPolygon& aPolygon(aPolyPoly3D.getB3DPolygon(a));

        // Determine the total size of the object

        basegfx::B3DRange aVolume(basegfx::utils::getRange(aPolygon));

        // Get normal

        basegfx::B3DVector aNormal(aPolygon.getNormal());

        aNormal.setX(fabs(aNormal.getX()));

        aNormal.setY(fabs(aNormal.getY()));

        aNormal.setZ(fabs(aNormal.getZ()));

        // Decide which coordinates should be used as a source for the mapping

        sal_uInt16 nSourceMode = 0;

        // Determine the greatest degree of freedom

        if (aNormal.getX() <= aNormal.getY() || aNormal.getX() <= aNormal.getZ())

        {

            if (aNormal.getY() > aNormal.getZ())

            {

                // Y is the largest, use X,Z as mapping

                nSourceMode = 1;

            }

            else

            {

                // Z is the largest, use X,Y as mapping

                nSourceMode = 2;

            }

        }

        // Create new polygon for texture coordinates

        basegfx::B2DPolygon aTexture;

        // Fill new polygon

        for (sal_uInt32 b(0); b < aPolygon.count(); b++)

        {

            basegfx::B2DPoint aTex;

            const basegfx::B3DPoint aCandidate(aPolygon.getB3DPoint(b));

            switch (nSourceMode)

            {

                case 0: //Source is Y,Z

                    if (aVolume.getHeight())

                        aTex.setX((aCandidate.getY() - aVolume.getMinY()) / aVolume.getHeight());

                    if (aVolume.getDepth())

                        aTex.setY((aCandidate.getZ() - aVolume.getMinZ()) / aVolume.getDepth());

                    break;

                case 1: // Source is X,Z

                    if (aVolume.getWidth())

                        aTex.setX((aCandidate.getX() - aVolume.getMinX()) / aVolume.getWidth());

                    if (aVolume.getDepth())

                        aTex.setY((aCandidate.getZ() - aVolume.getMinZ()) / aVolume.getDepth());

                    break;

                case 2: // Source is X,Y

                    if (aVolume.getWidth())

                        aTex.setX((aCandidate.getX() - aVolume.getMinX()) / aVolume.getWidth());

                    if (aVolume.getHeight())

                        aTex.setY((aCandidate.getY() - aVolume.getMinY()) / aVolume.getHeight());

                    break;

            }

            aTexture.append(aTex);

        }

        // Insert new polygon into the PolyPolygon

        aPolyTexture.append(aTexture);

    }

    // Set default Texture coordinates

    SetPolyTexture2D(aPolyTexture);

}

E3dPolygonObj::~E3dPolygonObj() {}

SdrObjKind E3dPolygonObj::GetObjIdentifier() const { return SdrObjKind::E3D_Polygon; }

void E3dPolygonObj::SetPolyPolygon3D(const basegfx::B3DPolyPolygon& rNewPolyPoly3D)

{

    if (aPolyPoly3D != rNewPolyPoly3D)

    {

        // New PolyPolygon; copying

        aPolyPoly3D = rNewPolyPoly3D;

        // Create new geometry

        ActionChanged();

    }

}

void E3dPolygonObj::SetPolyNormals3D(const basegfx::B3DPolyPolygon& rNewPolyNormals3D)

{

    if (aPolyNormals3D != rNewPolyNormals3D)

    {

        // New PolyPolygon; copying

        aPolyNormals3D = rNewPolyNormals3D;

        // Create new geometry

        ActionChanged();

    }

}

void E3dPolygonObj::SetPolyTexture2D(const basegfx::B2DPolyPolygon& rNewPolyTexture2D)

{

    if (aPolyTexture2D != rNewPolyTexture2D)

    {

        // New PolyPolygon; copying

        aPolyTexture2D = rNewPolyTexture2D;

        // Create new geometry

        ActionChanged();

    }

}

// Convert the object into a group object consisting of 6 polygons

rtl::Reference<SdrObject> E3dPolygonObj::DoConvertToPolyObj(bool /*bBezier*/,

                                                            bool /*bAddText*/) const

{

    return nullptr;

}

rtl::Reference<SdrObject> E3dPolygonObj::CloneSdrObject(SdrModel& rTargetModel) const

{

    return new E3dPolygonObj(rTargetModel, *this);

}

void E3dPolygonObj::SetLineOnly(bool bNew)

{

    if (bNew != bLineOnly)

    {

        bLineOnly = bNew;

        ActionChanged();

    }

}

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