Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 769 insertions, 0 deletions

diff --git a/drawinglayer/source/primitive3d/polygontubeprimitive3d.cxx b/drawinglayer/source/primitive3d/polygontubeprimitive3d.cxx
new file mode 100644
index 000000000..d8d3cc9c8
--- /dev/null
+++ b/drawinglayer/source/primitive3d/polygontubeprimitive3d.cxx
@@ -0,0 +1,769 @@
+/* -*- 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 <primitive3d/polygontubeprimitive3d.hxx>
+#include <drawinglayer/attribute/materialattribute3d.hxx>
+#include <basegfx/matrix/b3dhommatrix.hxx>
+#include <basegfx/polygon/b3dpolypolygon.hxx>
+#include <drawinglayer/primitive3d/polypolygonprimitive3d.hxx>
+#include <basegfx/polygon/b3dpolypolygontools.hxx>
+#include <drawinglayer/primitive3d/transformprimitive3d.hxx>
+#include <drawinglayer/primitive3d/drawinglayer_primitivetypes3d.hxx>
+#include <mutex>
+
+namespace drawinglayer::primitive3d
+{
+        namespace // anonymous namespace
+        {
+            class TubeBuffer
+            {
+            private:
+                // data for buffered tube primitives
+                Primitive3DContainer m_aLineTubeList;
+                sal_uInt32 m_nLineTubeSegments;
+                attribute::MaterialAttribute3D m_aLineMaterial;
+                std::mutex m_aMutex;
+            public:
+                TubeBuffer()
+                    : m_nLineTubeSegments(0)
+                {
+                }
+
+                TubeBuffer(const TubeBuffer&) = delete;
+                const TubeBuffer& operator=(const TubeBuffer&) = delete;
+
+                Primitive3DContainer getLineTubeSegments(
+                    sal_uInt32 nSegments,
+                    const attribute::MaterialAttribute3D& rMaterial)
+                {
+                    // may exclusively change cached data, use mutex
+                    std::unique_lock aGuard(m_aMutex);
+
+                    if (nSegments != m_nLineTubeSegments || !(rMaterial == m_aLineMaterial))
+                    {
+                        m_nLineTubeSegments = nSegments;
+                        m_aLineMaterial = rMaterial;
+                        m_aLineTubeList = Primitive3DContainer();
+                    }
+
+                    if (m_aLineTubeList.empty() && m_nLineTubeSegments != 0)
+                    {
+                        const basegfx::B3DPoint aLeft(0.0, 0.0, 0.0);
+                        const basegfx::B3DPoint aRight(1.0, 0.0, 0.0);
+                        basegfx::B3DPoint aLastLeft(0.0, 1.0, 0.0);
+                        basegfx::B3DPoint aLastRight(1.0, 1.0, 0.0);
+                        basegfx::B3DHomMatrix aRot;
+                        aRot.rotate(2 * M_PI / static_cast<double>(m_nLineTubeSegments), 0.0, 0.0);
+                        m_aLineTubeList.resize(m_nLineTubeSegments);
+
+                        for(sal_uInt32 a = 0; a < m_nLineTubeSegments; ++a)
+                        {
+                            const basegfx::B3DPoint aNextLeft(aRot * aLastLeft);
+                            const basegfx::B3DPoint aNextRight(aRot * aLastRight);
+                            basegfx::B3DPolygon aNewPolygon;
+
+                            aNewPolygon.append(aNextLeft);
+                            aNewPolygon.setNormal(0, basegfx::B3DVector(aNextLeft - aLeft));
+
+                            aNewPolygon.append(aLastLeft);
+                            aNewPolygon.setNormal(1, basegfx::B3DVector(aLastLeft - aLeft));
+
+                            aNewPolygon.append(aLastRight);
+                            aNewPolygon.setNormal(2, basegfx::B3DVector(aLastRight - aRight));
+
+                            aNewPolygon.append(aNextRight);
+                            aNewPolygon.setNormal(3, basegfx::B3DVector(aNextRight - aRight));
+
+                            aNewPolygon.setClosed(true);
+
+                            const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
+                            const Primitive3DReference xRef(new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, m_aLineMaterial, false));
+                            m_aLineTubeList[a] = xRef;
+
+                            aLastLeft = aNextLeft;
+                            aLastRight = aNextRight;
+                        }
+                    }
+                    return m_aLineTubeList;
+                }
+            };
+
+            Primitive3DContainer getLineTubeSegments(
+                sal_uInt32 nSegments,
+                const attribute::MaterialAttribute3D& rMaterial)
+            {
+                // static data for buffered tube primitives
+                static TubeBuffer theTubeBuffer;
+                return theTubeBuffer.getLineTubeSegments(nSegments, rMaterial);
+            }
+
+            class CapBuffer
+            {
+            private:
+                // data for buffered cap primitives
+                Primitive3DContainer m_aLineCapList;
+                sal_uInt32 m_nLineCapSegments;
+                attribute::MaterialAttribute3D m_aLineMaterial;
+                std::mutex m_aMutex;
+            public:
+                CapBuffer()
+                    : m_nLineCapSegments(0)
+                {
+                }
+                CapBuffer(const CapBuffer&) = delete;
+                const CapBuffer& operator=(const CapBuffer&) = delete;
+
+                Primitive3DContainer getLineCapSegments(
+                    sal_uInt32 nSegments,
+                    const attribute::MaterialAttribute3D& rMaterial)
+                {
+                    // may exclusively change cached data, use mutex
+                    std::unique_lock aGuard(m_aMutex);
+
+                    if (nSegments != m_nLineCapSegments || !(rMaterial == m_aLineMaterial))
+                    {
+                        m_nLineCapSegments = nSegments;
+                        m_aLineMaterial = rMaterial;
+                        m_aLineCapList = Primitive3DContainer();
+                    }
+
+                    if (m_aLineCapList.empty() && m_nLineCapSegments != 0)
+                    {
+                        const basegfx::B3DPoint aNull(0.0, 0.0, 0.0);
+                        basegfx::B3DPoint aLast(0.0, 1.0, 0.0);
+                        basegfx::B3DHomMatrix aRot;
+                        aRot.rotate(2 * M_PI / static_cast<double>(m_nLineCapSegments), 0.0, 0.0);
+                        m_aLineCapList.resize(m_nLineCapSegments);
+
+                        for(sal_uInt32 a = 0; a < m_nLineCapSegments; ++a)
+                        {
+                            const basegfx::B3DPoint aNext(aRot * aLast);
+                            basegfx::B3DPolygon aNewPolygon;
+
+                            aNewPolygon.append(aLast);
+                            aNewPolygon.setNormal(0, basegfx::B3DVector(aLast - aNull));
+
+                            aNewPolygon.append(aNext);
+                            aNewPolygon.setNormal(1, basegfx::B3DVector(aNext - aNull));
+
+                            aNewPolygon.append(aNull);
+                            aNewPolygon.setNormal(2, basegfx::B3DVector(-1.0, 0.0, 0.0));
+
+                            aNewPolygon.setClosed(true);
+
+                            const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
+                            const Primitive3DReference xRef(new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, m_aLineMaterial, false));
+                            m_aLineCapList[a] = xRef;
+
+                            aLast = aNext;
+                        }
+                    }
+
+                    return m_aLineCapList;
+                }
+            };
+
+            Primitive3DContainer getLineCapSegments(
+                sal_uInt32 nSegments,
+                const attribute::MaterialAttribute3D& rMaterial)
+            {
+                // static data for buffered cap primitives
+                static CapBuffer theCapBuffer;
+                return theCapBuffer.getLineCapSegments(nSegments, rMaterial);
+            }
+
+            class CapRoundBuffer
+            {
+            private:
+                // data for buffered capround primitives
+                Primitive3DContainer m_aLineCapRoundList;
+                sal_uInt32 m_nLineCapRoundSegments;
+                attribute::MaterialAttribute3D m_aLineMaterial;
+                std::mutex m_aMutex;
+            public:
+                CapRoundBuffer()
+                    : m_nLineCapRoundSegments(0)
+                {
+                }
+                CapRoundBuffer(const CapRoundBuffer&) = delete;
+                const CapRoundBuffer& operator=(const CapRoundBuffer&) = delete;
+
+                Primitive3DContainer getLineCapRoundSegments(
+                    sal_uInt32 nSegments,
+                    const attribute::MaterialAttribute3D& rMaterial)
+                {
+                    // may exclusively change cached data, use mutex
+                    std::unique_lock aGuard(m_aMutex);
+
+                    if (nSegments != m_nLineCapRoundSegments || !(rMaterial == m_aLineMaterial))
+                    {
+                        m_nLineCapRoundSegments = nSegments;
+                        m_aLineMaterial = rMaterial;
+                        m_aLineCapRoundList = Primitive3DContainer();
+                    }
+
+                    if (m_aLineCapRoundList.empty() && m_nLineCapRoundSegments)
+                    {
+                        // calculate new horizontal segments
+                        sal_uInt32 nVerSeg(nSegments / 2);
+
+                        if (nVerSeg < 1)
+                        {
+                            nVerSeg = 1;
+                        }
+
+                        // create half-sphere; upper half of unit sphere
+                        basegfx::B3DPolyPolygon aSphere(
+                            basegfx::utils::createUnitSphereFillPolyPolygon(
+                                nSegments,
+                                nVerSeg,
+                                true,
+                                M_PI_2, 0.0,
+                                0.0, 2 * M_PI));
+                        const sal_uInt32 nCount(aSphere.count());
+
+                        if (nCount)
+                        {
+                            // rotate to have sphere cap oriented to negative X-Axis; do not
+                            // forget to transform normals, too
+                            basegfx::B3DHomMatrix aSphereTrans;
+
+                            aSphereTrans.rotate(0.0, 0.0, M_PI_2);
+                            aSphere.transform(aSphereTrans);
+                            aSphere.transformNormals(aSphereTrans);
+
+                            // realloc for primitives and create based on polygon snippets
+                            m_aLineCapRoundList.resize(nCount);
+
+                            for (sal_uInt32 a = 0; a < nCount; ++a)
+                            {
+                                const basegfx::B3DPolygon& aPartPolygon(aSphere.getB3DPolygon(a));
+                                const basegfx::B3DPolyPolygon aPartPolyPolygon(aPartPolygon);
+
+                                // need to create one primitive per Polygon since the primitive
+                                // is for planar PolyPolygons which is definitely not the case here
+                                m_aLineCapRoundList[a] = new PolyPolygonMaterialPrimitive3D(
+                                    aPartPolyPolygon,
+                                    rMaterial,
+                                    false);
+                            }
+                        }
+                    }
+
+                    return m_aLineCapRoundList;
+                }
+
+            };
+
+            Primitive3DContainer getLineCapRoundSegments(
+                sal_uInt32 nSegments,
+                const attribute::MaterialAttribute3D& rMaterial)
+            {
+                // static data for buffered cap primitives
+                static CapRoundBuffer theCapRoundBuffer;
+                return theCapRoundBuffer.getLineCapRoundSegments(nSegments, rMaterial);
+            }
+
+            Primitive3DContainer getLineJoinSegments(
+                sal_uInt32 nSegments,
+                const attribute::MaterialAttribute3D& rMaterial,
+                double fAngle,
+                double fMiterMinimumAngle,
+                basegfx::B2DLineJoin aLineJoin)
+            {
+                // nSegments is for whole circle, adapt to half circle
+                const sal_uInt32 nVerSeg(nSegments >> 1);
+                std::vector< BasePrimitive3D* > aResultVector;
+
+                if(nVerSeg)
+                {
+                    if(basegfx::B2DLineJoin::Round == aLineJoin)
+                    {
+                        // calculate new horizontal segments
+                        const sal_uInt32 nHorSeg(basegfx::fround((fAngle / (2 * M_PI)) * static_cast<double>(nSegments)));
+
+                        if(nHorSeg)
+                        {
+                            // create half-sphere
+                            const basegfx::B3DPolyPolygon aSphere(basegfx::utils::createUnitSphereFillPolyPolygon(nHorSeg, nVerSeg, true, M_PI_2, -M_PI_2, 0.0, fAngle));
+
+                            for(sal_uInt32 a(0); a < aSphere.count(); a++)
+                            {
+                                const basegfx::B3DPolygon& aPartPolygon(aSphere.getB3DPolygon(a));
+                                const basegfx::B3DPolyPolygon aPartPolyPolygon(aPartPolygon);
+                                aResultVector.push_back(new PolyPolygonMaterialPrimitive3D(aPartPolyPolygon, rMaterial, false));
+                            }
+                        }
+                        else
+                        {
+                            // fallback to bevel when there is not at least one segment hor and ver
+                            aLineJoin = basegfx::B2DLineJoin::Bevel;
+                        }
+                    }
+
+                    if (basegfx::B2DLineJoin::Bevel == aLineJoin ||
+                        basegfx::B2DLineJoin::Miter == aLineJoin)
+                    {
+                        if(basegfx::B2DLineJoin::Miter == aLineJoin)
+                        {
+                            const double fMiterAngle(fAngle/2.0);
+
+                            if(fMiterAngle < fMiterMinimumAngle)
+                            {
+                                // fallback to bevel when miter's angle is too small
+                                aLineJoin = basegfx::B2DLineJoin::Bevel;
+                            }
+                        }
+
+                        const double fInc(M_PI / static_cast<double>(nVerSeg));
+                        const double fSin(sin(-fAngle));
+                        const double fCos(cos(-fAngle));
+                        const bool bMiter(basegfx::B2DLineJoin::Miter == aLineJoin);
+                        const double fMiterSin(bMiter ? sin(-(fAngle/2.0)) : 0.0);
+                        const double fMiterCos(bMiter ? cos(-(fAngle/2.0)) : 0.0);
+                        double fPos(-M_PI_2);
+                        basegfx::B3DPoint aPointOnXY, aPointRotY, aNextPointOnXY, aNextPointRotY;
+                        basegfx::B3DPoint aCurrMiter, aNextMiter;
+                        basegfx::B3DPolygon aNewPolygon, aMiterPolygon;
+
+                        // close polygon
+                        aNewPolygon.setClosed(true);
+                        aMiterPolygon.setClosed(true);
+
+                        for(sal_uInt32 a(0); a < nVerSeg; a++)
+                        {
+                            const bool bFirst(0 == a);
+                            const bool bLast(a + 1 == nVerSeg);
+
+                            if(bFirst || !bLast)
+                            {
+                                fPos += fInc;
+
+                                aNextPointOnXY = basegfx::B3DPoint(
+                                    cos(fPos),
+                                    sin(fPos),
+                                    0.0);
+
+                                aNextPointRotY = basegfx::B3DPoint(
+                                    aNextPointOnXY.getX() * fCos,
+                                    aNextPointOnXY.getY(),
+                                    aNextPointOnXY.getX() * fSin);
+
+                                if(bMiter)
+                                {
+                                    aNextMiter = basegfx::B3DPoint(
+                                        aNextPointOnXY.getX(),
+                                        aNextPointOnXY.getY(),
+                                        fMiterSin * (aNextPointOnXY.getX() / fMiterCos));
+                                }
+                            }
+
+                            if(bFirst)
+                            {
+                                aNewPolygon.clear();
+
+                                if(bMiter)
+                                {
+                                    aNewPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
+                                    aNewPolygon.append(aNextPointOnXY);
+                                    aNewPolygon.append(aNextMiter);
+
+                                    aMiterPolygon.clear();
+                                    aMiterPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
+                                    aMiterPolygon.append(aNextMiter);
+                                    aMiterPolygon.append(aNextPointRotY);
+                                }
+                                else
+                                {
+                                    aNewPolygon.append(basegfx::B3DPoint(0.0, -1.0, 0.0));
+                                    aNewPolygon.append(aNextPointOnXY);
+                                    aNewPolygon.append(aNextPointRotY);
+                                }
+                            }
+                            else if(bLast)
+                            {
+                                aNewPolygon.clear();
+
+                                if(bMiter)
+                                {
+                                    aNewPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
+                                    aNewPolygon.append(aCurrMiter);
+                                    aNewPolygon.append(aPointOnXY);
+
+                                    aMiterPolygon.clear();
+                                    aMiterPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
+                                    aMiterPolygon.append(aPointRotY);
+                                    aMiterPolygon.append(aCurrMiter);
+                                }
+                                else
+                                {
+                                    aNewPolygon.append(basegfx::B3DPoint(0.0, 1.0, 0.0));
+                                    aNewPolygon.append(aPointRotY);
+                                    aNewPolygon.append(aPointOnXY);
+                                }
+                            }
+                            else
+                            {
+                                aNewPolygon.clear();
+
+                                if(bMiter)
+                                {
+                                    aNewPolygon.append(aPointOnXY);
+                                    aNewPolygon.append(aNextPointOnXY);
+                                    aNewPolygon.append(aNextMiter);
+                                    aNewPolygon.append(aCurrMiter);
+
+                                    aMiterPolygon.clear();
+                                    aMiterPolygon.append(aCurrMiter);
+                                    aMiterPolygon.append(aNextMiter);
+                                    aMiterPolygon.append(aNextPointRotY);
+                                    aMiterPolygon.append(aPointRotY);
+                                }
+                                else
+                                {
+                                    aNewPolygon.append(aPointRotY);
+                                    aNewPolygon.append(aPointOnXY);
+                                    aNewPolygon.append(aNextPointOnXY);
+                                    aNewPolygon.append(aNextPointRotY);
+                                }
+                            }
+
+                            // set normals
+                            for(sal_uInt32 b(0); b < aNewPolygon.count(); b++)
+                            {
+                                aNewPolygon.setNormal(b, basegfx::B3DVector(aNewPolygon.getB3DPoint(b)));
+                            }
+
+                            // create primitive
+                            if(aNewPolygon.count())
+                            {
+                                const basegfx::B3DPolyPolygon aNewPolyPolygon(aNewPolygon);
+                                aResultVector.push_back(new PolyPolygonMaterialPrimitive3D(aNewPolyPolygon, rMaterial, false));
+                            }
+
+                            if(bMiter && aMiterPolygon.count())
+                            {
+                                // set normals
+                                for(sal_uInt32 c(0); c < aMiterPolygon.count(); c++)
+                                {
+                                    aMiterPolygon.setNormal(c, basegfx::B3DVector(aMiterPolygon.getB3DPoint(c)));
+                                }
+
+                                // create primitive
+                                const basegfx::B3DPolyPolygon aMiterPolyPolygon(aMiterPolygon);
+                                aResultVector.push_back(new PolyPolygonMaterialPrimitive3D(aMiterPolyPolygon, rMaterial, false));
+                            }
+
+                            // prepare next step
+                            if(bFirst || !bLast)
+                            {
+                                aPointOnXY = aNextPointOnXY;
+                                aPointRotY = aNextPointRotY;
+
+                                if(bMiter)
+                                {
+                                    aCurrMiter = aNextMiter;
+                                }
+                            }
+                        }
+                    }
+                }
+
+                Primitive3DContainer aRetval(aResultVector.size());
+
+                for(size_t a(0); a < aResultVector.size(); a++)
+                {
+                    aRetval[a] = Primitive3DReference(aResultVector[a]);
+                }
+
+                return aRetval;
+            }
+
+            basegfx::B3DHomMatrix getRotationFromVector(const basegfx::B3DVector& rVector)
+            {
+                // build transformation from unit vector to vector
+                basegfx::B3DHomMatrix aRetval;
+
+                // get applied rotations from angles in XY and in XZ (cartesian)
+                const double fRotInXY(atan2(rVector.getY(), rVector.getXZLength()));
+                const double fRotInXZ(atan2(-rVector.getZ(), rVector.getX()));
+
+                // apply rotations. Rot around Z needs to be done first, so apply in two steps
+                aRetval.rotate(0.0, 0.0, fRotInXY);
+                aRetval.rotate(0.0, fRotInXZ, 0.0);
+
+                return aRetval;
+            }
+        } // end of anonymous namespace
+
+
+using namespace com::sun::star;
+
+        Primitive3DContainer PolygonTubePrimitive3D::impCreate3DDecomposition(const geometry::ViewInformation3D& /*rViewInformation*/) const
+        {
+            const sal_uInt32 nPointCount(getB3DPolygon().count());
+            std::vector< BasePrimitive3D* > aResultVector;
+
+            if(nPointCount)
+            {
+                if(basegfx::fTools::more(getRadius(), 0.0))
+                {
+                    const attribute::MaterialAttribute3D aMaterial(getBColor());
+                    static const sal_uInt32 nSegments(8); // default for 3d line segments, for more quality just raise this value (in even steps)
+                    const bool bClosed(getB3DPolygon().isClosed());
+                    const bool bNoLineJoin(basegfx::B2DLineJoin::NONE == getLineJoin());
+                    const sal_uInt32 nLoopCount(bClosed ? nPointCount : nPointCount - 1);
+                    basegfx::B3DPoint aLast(getB3DPolygon().getB3DPoint(nPointCount - 1));
+                    basegfx::B3DPoint aCurr(getB3DPolygon().getB3DPoint(0));
+
+                    for(sal_uInt32 a(0); a < nLoopCount; a++)
+                    {
+                        // get next data
+                        const basegfx::B3DPoint aNext(getB3DPolygon().getB3DPoint((a + 1) % nPointCount));
+                        const basegfx::B3DVector aForw(aNext - aCurr);
+                        const double fForwLen(aForw.getLength());
+
+                        if(basegfx::fTools::more(fForwLen, 0.0))
+                        {
+                            // find out if linecap is active
+                            const bool bFirst(!a);
+                            const bool bLast(a + 1 == nLoopCount);
+                            const bool bLineCapPossible(!bClosed && (bFirst || bLast));
+                            const bool bLineCapRound(bLineCapPossible && css::drawing::LineCap_ROUND == getLineCap());
+                            const bool bLineCapSquare(bLineCapPossible && css::drawing::LineCap_SQUARE == getLineCap());
+
+                            // get rotation from vector, this describes rotation from (1, 0, 0) to aForw
+                            basegfx::B3DHomMatrix aRotVector(getRotationFromVector(aForw));
+
+                            // prepare transformations for tube and cap
+                            basegfx::B3DHomMatrix aTubeTrans;
+                            basegfx::B3DHomMatrix aCapTrans;
+
+                            // cap gets radius size
+                            aCapTrans.scale(getRadius(), getRadius(), getRadius());
+
+                            if(bLineCapSquare)
+                            {
+                                // when square line cap just prolong line segment in X, maybe 2 x radius when
+                                // first and last (simple line segment)
+                                const double fExtraLength(bFirst && bLast ? getRadius() * 2.0 : getRadius());
+
+                                aTubeTrans.scale(fForwLen + fExtraLength, getRadius(), getRadius());
+
+                                if(bFirst)
+                                {
+                                    // correct start positions for tube and cap when first and square prolonged
+                                    aTubeTrans.translate(-getRadius(), 0.0, 0.0);
+                                    aCapTrans.translate(-getRadius(), 0.0, 0.0);
+                                }
+                            }
+                            else
+                            {
+                                // normal tube size
+                                aTubeTrans.scale(fForwLen, getRadius(), getRadius());
+                            }
+
+                            // rotate and translate tube and cap
+                            aTubeTrans *= aRotVector;
+                            aTubeTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
+                            aCapTrans *= aRotVector;
+                            aCapTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
+
+                            if(bNoLineJoin || (!bClosed && bFirst))
+                            {
+                                // line start edge, build transformed primitiveVector3D
+                                Primitive3DContainer aSequence;
+
+                                if(bLineCapRound && bFirst)
+                                {
+                                    // LineCapRound used
+                                    aSequence = getLineCapRoundSegments(nSegments, aMaterial);
+                                }
+                                else
+                                {
+                                    // simple closing cap
+                                    aSequence = getLineCapSegments(nSegments, aMaterial);
+                                }
+
+                                aResultVector.push_back(new TransformPrimitive3D(aCapTrans, aSequence));
+                            }
+                            else
+                            {
+                                const basegfx::B3DVector aBack(aCurr - aLast);
+                                const double fCross(basegfx::cross(aBack, aForw).getLength());
+
+                                if(!basegfx::fTools::equalZero(fCross))
+                                {
+                                    // line connect non-parallel, aBack, aForw, use getLineJoin()
+                                    const double fAngle(acos(aBack.scalar(aForw) / (fForwLen * aBack.getLength()))); // 0.0 .. M_PI_2
+                                    Primitive3DContainer aNewList(
+                                        getLineJoinSegments(
+                                            nSegments,
+                                            aMaterial,
+                                            fAngle,
+                                            getMiterMinimumAngle(),
+                                            getLineJoin()));
+
+                                    // calculate transformation. First, get angle in YZ between nForw projected on (1, 0, 0) and nBack
+                                    basegfx::B3DHomMatrix aInvRotVector(aRotVector);
+                                    aInvRotVector.invert();
+                                    basegfx::B3DVector aTransBack(aInvRotVector * aBack);
+                                    const double fRotInYZ(atan2(aTransBack.getY(), aTransBack.getZ()));
+
+                                    // create trans by rotating unit sphere with angle 90 degrees around Y, then 180-fRot in X.
+                                    // Also apply usual scaling and translation
+                                    basegfx::B3DHomMatrix aSphereTrans;
+                                    aSphereTrans.rotate(0.0, M_PI_2, 0.0);
+                                    aSphereTrans.rotate(M_PI - fRotInYZ, 0.0, 0.0);
+                                    aSphereTrans *= aRotVector;
+                                    aSphereTrans.scale(getRadius(), getRadius(), getRadius());
+                                    aSphereTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
+
+                                    // line start edge, build transformed primitiveVector3D
+                                    aResultVector.push_back(
+                                        new TransformPrimitive3D(
+                                            aSphereTrans,
+                                            aNewList));
+                                }
+                            }
+
+                            // create line segments, build transformed primitiveVector3D
+                            aResultVector.push_back(
+                                new TransformPrimitive3D(
+                                    aTubeTrans,
+                                    getLineTubeSegments(nSegments, aMaterial)));
+
+                            if(bNoLineJoin || (!bClosed && bLast))
+                            {
+                                // line end edge
+                                basegfx::B3DHomMatrix aBackCapTrans;
+
+                                // Mirror (line end) and radius scale
+                                aBackCapTrans.rotate(0.0, M_PI, 0.0);
+                                aBackCapTrans.scale(getRadius(), getRadius(), getRadius());
+
+                                if(bLineCapSquare && bLast)
+                                {
+                                    // correct position when square and prolonged
+                                    aBackCapTrans.translate(fForwLen + getRadius(), 0.0, 0.0);
+                                }
+                                else
+                                {
+                                    // standard position
+                                    aBackCapTrans.translate(fForwLen, 0.0, 0.0);
+                                }
+
+                                // rotate and translate to destination
+                                aBackCapTrans *= aRotVector;
+                                aBackCapTrans.translate(aCurr.getX(), aCurr.getY(), aCurr.getZ());
+
+                                // get primitiveVector3D
+                                Primitive3DContainer aSequence;
+
+                                if(bLineCapRound && bLast)
+                                {
+                                    // LineCapRound used
+                                    aSequence = getLineCapRoundSegments(nSegments, aMaterial);
+                                }
+                                else
+                                {
+                                    // simple closing cap
+                                    aSequence = getLineCapSegments(nSegments, aMaterial);
+                                }
+
+                                aResultVector.push_back(
+                                    new TransformPrimitive3D(
+                                        aBackCapTrans,
+                                        aSequence));
+                            }
+                        }
+
+                        // prepare next loop step
+                        aLast = aCurr;
+                        aCurr = aNext;
+                    }
+                }
+                else
+                {
+                    // create hairline
+                    aResultVector.push_back(new PolygonHairlinePrimitive3D(getB3DPolygon(), getBColor()));
+                }
+            }
+
+            // prepare return value
+            Primitive3DContainer aRetval(aResultVector.size());
+
+            for(size_t a(0); a < aResultVector.size(); a++)
+            {
+                aRetval[a] = Primitive3DReference(aResultVector[a]);
+            }
+
+            return aRetval;
+        }
+
+        PolygonTubePrimitive3D::PolygonTubePrimitive3D(
+            const basegfx::B3DPolygon& rPolygon,
+            const basegfx::BColor& rBColor,
+            double fRadius, basegfx::B2DLineJoin aLineJoin,
+            css::drawing::LineCap aLineCap,
+            double fDegreeStepWidth,
+            double fMiterMinimumAngle)
+        :   PolygonHairlinePrimitive3D(rPolygon, rBColor),
+            mfRadius(fRadius),
+            mfDegreeStepWidth(fDegreeStepWidth),
+            mfMiterMinimumAngle(fMiterMinimumAngle),
+            maLineJoin(aLineJoin),
+            maLineCap(aLineCap)
+        {
+        }
+
+        bool PolygonTubePrimitive3D::operator==(const BasePrimitive3D& rPrimitive) const
+        {
+            if(PolygonHairlinePrimitive3D::operator==(rPrimitive))
+            {
+                const PolygonTubePrimitive3D& rCompare = static_cast<const PolygonTubePrimitive3D&>(rPrimitive);
+
+                return (getRadius() == rCompare.getRadius()
+                    && getDegreeStepWidth() == rCompare.getDegreeStepWidth()
+                    && getMiterMinimumAngle() == rCompare.getMiterMinimumAngle()
+                    && getLineJoin() == rCompare.getLineJoin()
+                    && getLineCap() == rCompare.getLineCap());
+            }
+
+            return false;
+        }
+
+        Primitive3DContainer PolygonTubePrimitive3D::get3DDecomposition(const geometry::ViewInformation3D& rViewInformation) const
+        {
+            ::osl::MutexGuard aGuard( m_aMutex );
+
+            if(getLast3DDecomposition().empty())
+            {
+                const Primitive3DContainer aNewSequence(impCreate3DDecomposition(rViewInformation));
+                const_cast< PolygonTubePrimitive3D* >(this)->maLast3DDecomposition = aNewSequence;
+            }
+
+            return getLast3DDecomposition();
+        }
+
+        // provide unique ID
+        ImplPrimitive3DIDBlock(PolygonTubePrimitive3D, PRIMITIVE3D_ID_POLYGONTUBEPRIMITIVE3D)
+
+}
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */