/* -*- 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 <com/sun/star/drawing/TextureKind2.hpp>

#include <com/sun/star/drawing/TextureMode.hpp>

#include <primitive3d/sdrdecompositiontools3d.hxx>

#include <drawinglayer/attribute/strokeattribute.hxx>

#include <drawinglayer/primitive3d/baseprimitive3d.hxx>

#include <drawinglayer/primitive3d/polygonprimitive3d.hxx>

#include <basegfx/polygon/b3dpolypolygon.hxx>

#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>

#include <drawinglayer/attribute/fillgraphicattribute.hxx>

#include <drawinglayer/attribute/sdrfillgraphicattribute.hxx>

#include <basegfx/polygon/b3dpolypolygontools.hxx>

#include <primitive3d/textureprimitive3d.hxx>

#include <drawinglayer/primitive3d/modifiedcolorprimitive3d.hxx>

#include <primitive3d/hatchtextureprimitive3d.hxx>

#include <primitive3d/shadowprimitive3d.hxx>

#include <basegfx/range/b2drange.hxx>

#include <basegfx/range/b3drange.hxx>

#include <drawinglayer/attribute/sdrlineattribute.hxx>

#include <drawinglayer/attribute/sdrobjectattribute3d.hxx>

#include <drawinglayer/attribute/sdrfillattribute.hxx>

#include <drawinglayer/attribute/sdrshadowattribute.hxx>

#include <primitive3d/hiddengeometryprimitive3d.hxx>

#include <rtl/ref.hxx>

namespace drawinglayer::primitive3d

{

        basegfx::B3DRange getRangeFrom3DGeometry(std::vector< basegfx::B3DPolyPolygon >& rFill)

        {

            basegfx::B3DRange aRetval;

            for(const basegfx::B3DPolyPolygon & a : rFill)

            {

                aRetval.expand(basegfx::utils::getRange(a));

            }

            return aRetval;

        }

        void applyNormalsKindSphereTo3DGeometry(std::vector< basegfx::B3DPolyPolygon >& rFill, const basegfx::B3DRange& rRange)

        {

            // create sphere normals

            const basegfx::B3DPoint aCenter(rRange.getCenter());

            for(basegfx::B3DPolyPolygon & a : rFill)

            {

                a = basegfx::utils::applyDefaultNormalsSphere(a, aCenter);

            }

        }

        void applyNormalsKindFlatTo3DGeometry(std::vector< basegfx::B3DPolyPolygon >& rFill)

        {

            for(basegfx::B3DPolyPolygon & a : rFill)

            {

                a.clearNormals();

            }

        }

        void applyNormalsInvertTo3DGeometry(std::vector< basegfx::B3DPolyPolygon >& rFill)

        {

            // invert normals

            for(basegfx::B3DPolyPolygon & a : rFill)

            {

                a = basegfx::utils::invertNormals(a);

            }

        }

        void applyTextureTo3DGeometry(

            css::drawing::TextureProjectionMode eModeX,

            css::drawing::TextureProjectionMode eModeY,

            std::vector< basegfx::B3DPolyPolygon >& rFill,

            const basegfx::B3DRange& rRange,

            const basegfx::B2DVector& rTextureSize)

        {

            // handle texture coordinates X

            const bool bParallelX(css::drawing::TextureProjectionMode_PARALLEL == eModeX);

            const bool bSphereX(!bParallelX && (css::drawing::TextureProjectionMode_SPHERE == eModeX));

            // handle texture coordinates Y

            const bool bParallelY(css::drawing::TextureProjectionMode_PARALLEL == eModeY);

            const bool bSphereY(!bParallelY && (css::drawing::TextureProjectionMode_SPHERE == eModeY));

            if(bParallelX || bParallelY)

            {

                // apply parallel texture coordinates in X and/or Y

                for(auto & a: rFill)

                {

                    a = basegfx::utils::applyDefaultTextureCoordinatesParallel(a, rRange, bParallelX, bParallelY);

                }

            }

            if(bSphereX || bSphereY)

            {

                // apply spherical texture coordinates in X and/or Y

                const basegfx::B3DPoint aCenter(rRange.getCenter());

                for(auto & a: rFill)

                {

                    a = basegfx::utils::applyDefaultTextureCoordinatesSphere(a, aCenter, bSphereX, bSphereY);

                }

            }

            // transform texture coordinates to texture size

            basegfx::B2DHomMatrix aTexMatrix;

            aTexMatrix.scale(rTextureSize.getX(), rTextureSize.getY());

            for(auto & a: rFill)

            {

                a.transformTextureCoordinates(aTexMatrix);

            }

        }

        Primitive3DContainer create3DPolyPolygonLinePrimitives(

            const basegfx::B3DPolyPolygon& rUnitPolyPolygon,

            const basegfx::B3DHomMatrix& rObjectTransform,

            const attribute::SdrLineAttribute& rLine)

        {

            // prepare fully scaled polyPolygon

            basegfx::B3DPolyPolygon aScaledPolyPolygon(rUnitPolyPolygon);

            aScaledPolyPolygon.transform(rObjectTransform);

            // create line and stroke attribute

            const attribute::LineAttribute aLineAttribute(rLine.getColor(), rLine.getWidth(), rLine.getJoin(), rLine.getCap());

            const attribute::StrokeAttribute aStrokeAttribute(std::vector(rLine.getDotDashArray()), rLine.getFullDotDashLen());

            // create primitives

            Primitive3DContainer aRetval(aScaledPolyPolygon.count());

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

            {

                aRetval[a] = new PolygonStrokePrimitive3D(aScaledPolyPolygon.getB3DPolygon(a), aLineAttribute, aStrokeAttribute);

            }

            if(0.0 != rLine.getTransparence())

            {

                // create UnifiedTransparenceTexturePrimitive3D, add created primitives and exchange

                const Primitive3DReference xRef(new UnifiedTransparenceTexturePrimitive3D(rLine.getTransparence(), aRetval));

                aRetval = { xRef };

            }

            return aRetval;

        }

        Primitive3DContainer create3DPolyPolygonFillPrimitives(

            const std::vector< basegfx::B3DPolyPolygon >& r3DPolyPolygonVector,

            const basegfx::B3DHomMatrix& rObjectTransform,

            const basegfx::B2DVector& rTextureSize,

            const attribute::Sdr3DObjectAttribute& aSdr3DObjectAttribute,

            const attribute::SdrFillAttribute& rFill,

            const attribute::FillGradientAttribute& rFillGradient)

        {

            Primitive3DContainer aRetval;

            if(!r3DPolyPolygonVector.empty())

            {

                // create list of simple fill primitives

                aRetval.resize(r3DPolyPolygonVector.size());

                for(size_t a(0); a < r3DPolyPolygonVector.size(); a++)

                {

                    // get scaled PolyPolygon

                    basegfx::B3DPolyPolygon aScaledPolyPolygon(r3DPolyPolygonVector[a]);

                    aScaledPolyPolygon.transform(rObjectTransform);

                    if(aScaledPolyPolygon.areNormalsUsed())

                    {

                        aScaledPolyPolygon.transformNormals(rObjectTransform);

                    }

                    const Primitive3DReference xRef(new PolyPolygonMaterialPrimitive3D(

                        std::move(aScaledPolyPolygon),

                        aSdr3DObjectAttribute.getMaterial(),

                        aSdr3DObjectAttribute.getDoubleSided()));

                    aRetval[a] = xRef;

                }

                // look for and evtl. build texture sub-group primitive

                if(!rFill.getGradient().isDefault()

                    || !rFill.getHatch().isDefault()

                    || !rFill.getFillGraphic().isDefault())

                {

                    bool bModulate(css::drawing::TextureMode_MODULATE == aSdr3DObjectAttribute.getTextureMode());

                    bool bFilter(aSdr3DObjectAttribute.getTextureFilter());

                    rtl::Reference<BasePrimitive3D> pNewTexturePrimitive3D;

                    if(!rFill.getGradient().isDefault())

                    {

                        // create gradientTexture3D with sublist, add to local aRetval

                        pNewTexturePrimitive3D = new GradientTexturePrimitive3D(

                            rFill.getGradient(),

                            aRetval,

                            rTextureSize,

                            bModulate,

                            bFilter);

                    }

                    else if(!rFill.getHatch().isDefault())

                    {

                        // create hatchTexture3D with sublist, add to local aRetval

                        pNewTexturePrimitive3D = new HatchTexturePrimitive3D(

                            rFill.getHatch(),

                            aRetval,

                            rTextureSize,

                            bModulate,

                            bFilter);

                    }

                    else // if(!rFill.getFillGraphic().isDefault())

                    {

                        // create bitmapTexture3D with sublist, add to local aRetval

                        const basegfx::B2DRange aTexRange(0.0, 0.0, rTextureSize.getX(), rTextureSize.getY());

                        pNewTexturePrimitive3D = new BitmapTexturePrimitive3D(

                            rFill.getFillGraphic().createFillGraphicAttribute(aTexRange),

                            aRetval,

                            rTextureSize,

                            bModulate,

                            bFilter);

                    }

                    // exchange aRetval content with texture group

                    aRetval = { Primitive3DReference(pNewTexturePrimitive3D) };

                    if(css::drawing::TextureKind2_LUMINANCE == aSdr3DObjectAttribute.getTextureKind())

                    {

                        // use modified color primitive to force textures to gray

                        basegfx::BColorModifierSharedPtr aBColorModifier =

                            std::make_shared<basegfx::BColorModifier_gray>();

                        Primitive3DReference xRef2(

                            new ModifiedColorPrimitive3D(

                                aRetval,

                                std::move(aBColorModifier)));

                        aRetval = { xRef2 };

                    }

                }

                if(0.0 != rFill.getTransparence())

                {

                    // create UnifiedTransparenceTexturePrimitive3D with sublist and exchange

                    const Primitive3DReference xRef(new UnifiedTransparenceTexturePrimitive3D(rFill.getTransparence(), aRetval));

                    aRetval = { xRef };

                }

                else if(!rFillGradient.isDefault())

                {

                    // create TransparenceTexturePrimitive3D with sublist and exchange

                    const Primitive3DReference xRef(new TransparenceTexturePrimitive3D(rFillGradient, aRetval, rTextureSize));

                    aRetval = { xRef };

                }

            }

            return aRetval;

        }

        Primitive3DContainer createShadowPrimitive3D(

            const Primitive3DContainer& rSource,

            const attribute::SdrShadowAttribute& rShadow,

            bool bShadow3D)

        {

            // create Shadow primitives. Uses already created primitives

            if(!rSource.empty() && !basegfx::fTools::moreOrEqual(rShadow.getTransparence(), 1.0))

            {

                // prepare new list for shadow geometry

                basegfx::B2DHomMatrix aShadowOffset;

                aShadowOffset.set(0, 2, rShadow.getOffset().getX());

                aShadowOffset.set(1, 2, rShadow.getOffset().getY());

                // create shadow primitive and add primitives

                const Primitive3DReference xRef(new ShadowPrimitive3D(aShadowOffset, rShadow.getColor(), rShadow.getTransparence(), bShadow3D, rSource));

                return { xRef };

            }

            else

            {

                return Primitive3DContainer();

            }

        }

        Primitive3DContainer createHiddenGeometryPrimitives3D(

            const std::vector< basegfx::B3DPolyPolygon >& r3DPolyPolygonVector,

            const basegfx::B3DHomMatrix& rObjectTransform,

            const basegfx::B2DVector& rTextureSize,

            const attribute::Sdr3DObjectAttribute& aSdr3DObjectAttribute)

        {

            // create hidden sub-geometry which can be used for HitTest

            // and BoundRect calculations, but will not be visualized

            const attribute::SdrFillAttribute aSimplifiedFillAttribute(

                0.0,

                basegfx::BColor(),

                attribute::FillGradientAttribute(),

                attribute::FillHatchAttribute(),

                attribute::SdrFillGraphicAttribute());

            const Primitive3DReference aHidden(

                new HiddenGeometryPrimitive3D(

                    create3DPolyPolygonFillPrimitives(

                        r3DPolyPolygonVector,

                        rObjectTransform,

                        rTextureSize,

                        aSdr3DObjectAttribute,

                        aSimplifiedFillAttribute,

                        attribute::FillGradientAttribute())));

            return { aHidden };

        }

} // end of namespace

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