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, 1593 insertions, 0 deletions

diff --git a/svx/source/engine3d/view3d.cxx b/svx/source/engine3d/view3d.cxx
new file mode 100644
index 000000000..e5caf5355
--- /dev/null
+++ b/svx/source/engine3d/view3d.cxx
@@ -0,0 +1,1593 @@
+/* -*- 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 <svx/svdopath.hxx>
+#include <svx/svditer.hxx>
+#include <svx/svdmodel.hxx>
+#include <svx/svdpagv.hxx>
+#include <editeng/colritem.hxx>
+#include <editeng/eeitem.hxx>
+#include <svx/svdview.hxx>
+#include <svx/strings.hrc>
+#include <svx/dialmgr.hxx>
+#include <svx/obj3d.hxx>
+#include <svx/lathe3d.hxx>
+#include <extrud3d.hxx>
+#include <dragmt3d.hxx>
+#include <svx/scene3d.hxx>
+#include <svx/view3d.hxx>
+#include <svx/svdundo.hxx>
+#include <svx/xflclit.hxx>
+#include <svx/xlnclit.hxx>
+#include <svx/xfillit0.hxx>
+#include <svx/xlineit0.hxx>
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <svx/xlnwtit.hxx>
+#include <svx/sdr/overlay/overlaypolypolygon.hxx>
+#include <svx/sdr/overlay/overlaymanager.hxx>
+#include <svx/sdrpaintwindow.hxx>
+#include <svx/sdr/contact/viewcontact.hxx>
+#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
+#include <svx/sdr/overlay/overlayprimitive2dsequenceobject.hxx>
+#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
+#include <svx/e3dsceneupdater.hxx>
+
+using namespace com::sun::star;
+
+
+// Migrate Marking
+
+class Impl3DMirrorConstructOverlay
+{
+    // The OverlayObjects
+    sdr::overlay::OverlayObjectList               maObjects;
+
+    // the view
+    const E3dView&                                  mrView;
+
+    // the object count
+    size_t mnCount;
+
+    // the unmirrored polygons
+    basegfx::B2DPolyPolygon*                        mpPolygons;
+
+    // the overlay geometry from selected objects
+    drawinglayer::primitive2d::Primitive2DContainer    maFullOverlay;
+
+    // Copy assignment is forbidden and not implemented.
+    Impl3DMirrorConstructOverlay (const Impl3DMirrorConstructOverlay &) = delete;
+    Impl3DMirrorConstructOverlay & operator= (const Impl3DMirrorConstructOverlay &) = delete;
+
+public:
+    explicit Impl3DMirrorConstructOverlay(const E3dView& rView);
+    ~Impl3DMirrorConstructOverlay();
+
+    void SetMirrorAxis(Point aMirrorAxisA, Point aMirrorAxisB);
+};
+
+Impl3DMirrorConstructOverlay::Impl3DMirrorConstructOverlay(const E3dView& rView)
+:   mrView(rView),
+    mnCount(rView.GetMarkedObjectCount()),
+    mpPolygons(nullptr)
+{
+    if(!mnCount)
+        return;
+
+    if(mrView.IsSolidDragging())
+    {
+        SdrPageView* pPV = rView.GetSdrPageView();
+
+        if(pPV && pPV->PageWindowCount())
+        {
+            for(size_t a = 0; a < mnCount; ++a)
+            {
+                SdrObject* pObject = mrView.GetMarkedObjectByIndex(a);
+
+                if(pObject)
+                {
+                    // use the view-independent primitive representation (without
+                    // evtl. GridOffset, that may be applied to the DragEntry individually)
+                    pObject->GetViewContact().getViewIndependentPrimitive2DContainer(maFullOverlay);
+                }
+            }
+        }
+    }
+    else
+    {
+        mpPolygons = new basegfx::B2DPolyPolygon[mnCount];
+
+        for(size_t a = 0; a < mnCount; ++a)
+        {
+            SdrObject* pObject = mrView.GetMarkedObjectByIndex(a);
+            mpPolygons[mnCount - (a + 1)] = pObject->TakeXorPoly();
+        }
+    }
+}
+
+Impl3DMirrorConstructOverlay::~Impl3DMirrorConstructOverlay()
+{
+    // The OverlayObjects are cleared using the destructor of OverlayObjectList.
+    // That destructor calls clear() at the list which removes all objects from the
+    // OverlayManager and deletes them.
+    delete[] mpPolygons;
+}
+
+void Impl3DMirrorConstructOverlay::SetMirrorAxis(Point aMirrorAxisA, Point aMirrorAxisB)
+{
+    // get rid of old overlay objects
+    maObjects.clear();
+
+    // create new ones
+    for(sal_uInt32 a(0); a < mrView.PaintWindowCount(); a++)
+    {
+        SdrPaintWindow* pCandidate = mrView.GetPaintWindow(a);
+        const rtl::Reference< sdr::overlay::OverlayManager >& xTargetOverlay = pCandidate->GetOverlayManager();
+
+        if(xTargetOverlay.is())
+        {
+            // build transformation: translate and rotate so that given edge is
+            // on x axis, them mirror in y and translate back
+            const basegfx::B2DVector aEdge(aMirrorAxisB.X() - aMirrorAxisA.X(), aMirrorAxisB.Y() - aMirrorAxisA.Y());
+            basegfx::B2DHomMatrix aMatrixTransform(basegfx::utils::createTranslateB2DHomMatrix(
+                -aMirrorAxisA.X(), -aMirrorAxisA.Y()));
+            aMatrixTransform.rotate(-atan2(aEdge.getY(), aEdge.getX()));
+            aMatrixTransform.scale(1.0, -1.0);
+            aMatrixTransform.rotate(atan2(aEdge.getY(), aEdge.getX()));
+            aMatrixTransform.translate(aMirrorAxisA.X(), aMirrorAxisA.Y());
+
+            if(mrView.IsSolidDragging())
+            {
+                if(!maFullOverlay.empty())
+                {
+                    drawinglayer::primitive2d::Primitive2DContainer aContent(maFullOverlay);
+
+                    if(!aMatrixTransform.isIdentity())
+                    {
+                        // embed in transformation group
+                        drawinglayer::primitive2d::Primitive2DReference aTransformPrimitive2D(new drawinglayer::primitive2d::TransformPrimitive2D(aMatrixTransform, std::move(aContent)));
+                        aContent = drawinglayer::primitive2d::Primitive2DContainer { aTransformPrimitive2D };
+                    }
+
+                    // if we have full overlay from selected objects, embed with 50% transparence, the
+                    // transformation is added to the OverlayPrimitive2DSequenceObject
+                    drawinglayer::primitive2d::Primitive2DReference aUnifiedTransparencePrimitive2D(new drawinglayer::primitive2d::UnifiedTransparencePrimitive2D(std::move(aContent), 0.5));
+                    aContent = drawinglayer::primitive2d::Primitive2DContainer { aUnifiedTransparencePrimitive2D };
+
+                    std::unique_ptr<sdr::overlay::OverlayPrimitive2DSequenceObject> pNew(new sdr::overlay::OverlayPrimitive2DSequenceObject(std::move(aContent)));
+
+                    xTargetOverlay->add(*pNew);
+                    maObjects.append(std::move(pNew));
+                }
+            }
+            else
+            {
+                for(size_t b = 0; b < mnCount; ++b)
+                {
+                    // apply to polygon
+                    basegfx::B2DPolyPolygon aPolyPolygon(mpPolygons[b]);
+                    aPolyPolygon.transform(aMatrixTransform);
+
+                    std::unique_ptr<sdr::overlay::OverlayPolyPolygonStripedAndFilled> pNew(new sdr::overlay::OverlayPolyPolygonStripedAndFilled(
+                        aPolyPolygon));
+                    xTargetOverlay->add(*pNew);
+                    maObjects.append(std::move(pNew));
+                }
+            }
+        }
+    }
+}
+
+E3dView::E3dView(
+    SdrModel& rSdrModel,
+    OutputDevice* pOut)
+:   SdrView(rSdrModel, pOut)
+{
+    InitView();
+}
+
+// DrawMarkedObj override, since possibly only a single 3D object is to be
+// drawn
+
+void E3dView::DrawMarkedObj(OutputDevice& rOut) const
+{
+    // Does 3D objects exist which scenes are not selected?
+    bool bSpecialHandling = false;
+    E3dScene *pScene = nullptr;
+
+    const size_t nCnt = GetMarkedObjectCount();
+    for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+    {
+        SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+        if(auto pCompoundObject = dynamic_cast<E3dCompoundObject*>(pObj))
+        {
+            // related scene
+            pScene = pCompoundObject->getRootE3dSceneFromE3dObject();
+
+            if(nullptr != pScene && !IsObjMarked(pScene))
+            {
+                bSpecialHandling = true;
+            }
+        }
+        // Reset all selection flags
+        if(auto p3dObject = dynamic_cast< const E3dObject*>(pObj))
+        {
+            pScene = p3dObject->getRootE3dSceneFromE3dObject();
+
+            if(nullptr != pScene)
+            {
+                pScene->SetSelected(false);
+            }
+        }
+    }
+
+    if(bSpecialHandling)
+    {
+        // Set selection flag to "not selected" for scenes related to all 3D
+        // objects
+        for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+        {
+            SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+            if(auto pCompoundObject = dynamic_cast<E3dCompoundObject*>(pObj))
+            {
+                // related scene
+                pScene = pCompoundObject->getRootE3dSceneFromE3dObject();
+
+                if(nullptr != pScene)
+                {
+                    pScene->SetSelected(false);
+                }
+            }
+        }
+
+        for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+        {
+            SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+            if(auto p3DObj = dynamic_cast<E3dObject*>(pObj))
+            {
+                // Select object
+                p3DObj->SetSelected(true);
+                pScene = p3DObj->getRootE3dSceneFromE3dObject();
+            }
+        }
+
+        if(nullptr != pScene)
+        {
+            // code from parent
+            SortMarkedObjects();
+
+            pScene->SetDrawOnlySelected(true);
+            pScene->SingleObjectPainter(rOut);
+            pScene->SetDrawOnlySelected(false);
+        }
+
+        // Reset selection flag
+        for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+        {
+            SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+            if(auto pCompoundObject = dynamic_cast<E3dCompoundObject*>(pObj))
+            {
+                // related scene
+                pScene = pCompoundObject->getRootE3dSceneFromE3dObject();
+
+                if(nullptr != pScene)
+                {
+                    pScene->SetSelected(false);
+                }
+            }
+        }
+    }
+    else
+    {
+        // call parent
+        SdrExchangeView::DrawMarkedObj(rOut);
+    }
+}
+
+// override get model, since in some 3D objects an additional scene
+// must be pushed in
+
+std::unique_ptr<SdrModel> E3dView::CreateMarkedObjModel() const
+{
+    // Does 3D objects exist which scenes are not selected?
+    bool bSpecialHandling(false);
+    const size_t nCount(GetMarkedObjectCount());
+    E3dScene *pScene = nullptr;
+
+    for(size_t nObjs = 0; nObjs < nCount; ++nObjs)
+    {
+        const SdrObject* pObj = GetMarkedObjectByIndex(nObjs);
+
+        if(!bSpecialHandling)
+            if(auto pCompoundObj = dynamic_cast< const E3dCompoundObject*>(pObj))
+            {
+                // if the object is selected, but it's scene not,
+                // we need special handling
+                pScene = pCompoundObj->getRootE3dSceneFromE3dObject();
+
+                if(nullptr != pScene && !IsObjMarked(pScene))
+                {
+                    bSpecialHandling = true;
+                }
+            }
+
+        if(auto p3dObject = dynamic_cast< const E3dObject*>(pObj))
+        {
+            // reset all selection flags at 3D objects
+            pScene = p3dObject->getRootE3dSceneFromE3dObject();
+
+            if(nullptr != pScene)
+            {
+                pScene->SetSelected(false);
+            }
+        }
+    }
+
+    if(!bSpecialHandling)
+    {
+        // call parent
+        return SdrView::CreateMarkedObjModel();
+    }
+
+    std::unique_ptr<SdrModel> pNewModel;
+    tools::Rectangle aSelectedSnapRect;
+
+    // set 3d selection flags at all directly selected objects
+    // and collect SnapRect of selected objects
+    for(size_t nObjs = 0; nObjs < nCount; ++nObjs)
+    {
+        SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+
+        if(auto p3DObj = dynamic_cast<E3dCompoundObject*>(pObj))
+        {
+            // mark object, but not scenes
+            p3DObj->SetSelected(true);
+            aSelectedSnapRect.Union(p3DObj->GetSnapRect());
+        }
+    }
+
+    // create new mark list which contains all indirectly selected3d
+    // scenes as selected objects
+    SdrMarkList aOldML(GetMarkedObjectList());
+    SdrMarkList aNewML;
+    SdrMarkList& rCurrentMarkList = const_cast<E3dView*>(this)->GetMarkedObjectListWriteAccess();
+    rCurrentMarkList = aNewML;
+
+    for(size_t nObjs = 0; nObjs < nCount; ++nObjs)
+    {
+        SdrObject *pObj = aOldML.GetMark(nObjs)->GetMarkedSdrObj();
+
+        if(auto p3dObject = dynamic_cast< E3dObject* >(pObj))
+        {
+            pScene = p3dObject->getRootE3dSceneFromE3dObject();
+
+            if(nullptr != pScene && !IsObjMarked(pScene) && GetSdrPageView())
+            {
+                const_cast<E3dView*>(this)->MarkObj(pScene, GetSdrPageView(), false, true);
+            }
+        }
+    }
+
+    // call parent. This will copy all scenes and the selection flags at the 3D objects. So
+    // it will be possible to delete all non-selected 3d objects from the cloned 3d scenes
+    pNewModel = SdrView::CreateMarkedObjModel();
+
+    if(pNewModel)
+    {
+        for(sal_uInt16 nPg(0); nPg < pNewModel->GetPageCount(); nPg++)
+        {
+            const SdrPage* pSrcPg=pNewModel->GetPage(nPg);
+            const size_t nObjCount(pSrcPg->GetObjCount());
+
+            for(size_t nOb = 0; nOb < nObjCount; ++nOb)
+            {
+                const SdrObject* pSrcOb=pSrcPg->GetObj(nOb);
+
+                if(auto p3dscene = dynamic_cast< const E3dScene* >( pSrcOb))
+                {
+                    pScene = const_cast<E3dScene*>(p3dscene);
+
+                    // delete all not intentionally cloned 3d objects
+                    pScene->removeAllNonSelectedObjects();
+
+                    // reset select flags and set SnapRect of all selected objects
+                    pScene->SetSelected(false);
+                    pScene->SetSnapRect(aSelectedSnapRect);
+                }
+            }
+        }
+    }
+
+    // restore old selection
+    rCurrentMarkList = aOldML;
+
+    return pNewModel;
+}
+
+// When pasting objects have to integrated if a scene is inserted, but
+// not the scene itself
+
+bool E3dView::Paste(
+    const SdrModel& rMod, const Point& rPos, SdrObjList* pLst, SdrInsertFlags nOptions)
+{
+    bool bRetval = false;
+
+    // Get list
+    Point aPos(rPos);
+    SdrObjList* pDstList = pLst;
+    ImpGetPasteObjList(aPos, pDstList);
+
+    if(!pDstList)
+        return false;
+
+    // Get owner of the list
+    E3dScene* pDstScene(dynamic_cast< E3dScene* >(pDstList->getSdrObjectFromSdrObjList()));
+
+    if(nullptr != pDstScene)
+    {
+        BegUndo(SvxResId(RID_SVX_3D_UNDO_EXCHANGE_PASTE));
+
+        // Copy all objects from E3dScenes and insert them directly
+        for(sal_uInt16 nPg(0); nPg < rMod.GetPageCount(); nPg++)
+        {
+            const SdrPage* pSrcPg=rMod.GetPage(nPg);
+            const size_t nObjCount(pSrcPg->GetObjCount());
+
+            // calculate offset for paste
+            tools::Rectangle aR = pSrcPg->GetAllObjBoundRect();
+            Point aDist(aPos - aR.Center());
+
+            // Insert sub-objects for scenes
+            for(size_t nOb = 0; nOb < nObjCount; ++nOb)
+            {
+                const SdrObject* pSrcOb = pSrcPg->GetObj(nOb);
+                if(auto p3dscene = dynamic_cast< const E3dScene* >(pSrcOb))
+                {
+                    E3dScene* pSrcScene = const_cast<E3dScene*>(p3dscene);
+                    ImpCloneAll3DObjectsToDestScene(pSrcScene, pDstScene, aDist);
+                }
+            }
+        }
+        EndUndo();
+    }
+    else
+    {
+        // call parent
+        bRetval = SdrView::Paste(rMod, rPos, pLst, nOptions);
+    }
+
+    return bRetval;
+}
+
+// Service routine used from local Clone() and from SdrCreateView::EndCreateObj(...)
+bool E3dView::ImpCloneAll3DObjectsToDestScene(E3dScene const * pSrcScene, E3dScene* pDstScene, Point /*aOffset*/)
+{
+    bool bRetval(false);
+
+    if(pSrcScene && pDstScene)
+    {
+        for(size_t i = 0; i < pSrcScene->GetSubList()->GetObjCount(); ++i)
+        {
+            E3dCompoundObject* pCompoundObj = dynamic_cast< E3dCompoundObject* >(pSrcScene->GetSubList()->GetObj(i));
+
+            if(pCompoundObj)
+            {
+                E3dCompoundObject* pNewCompoundObj(pCompoundObj->CloneSdrObject(pDstScene->getSdrModelFromSdrObject()));
+
+                if(pNewCompoundObj)
+                {
+                    // get dest scene's current range in 3D world coordinates
+                    const basegfx::B3DHomMatrix aSceneToWorldTrans(pDstScene->GetFullTransform());
+                    basegfx::B3DRange aSceneRange(pDstScene->GetBoundVolume());
+                    aSceneRange.transform(aSceneToWorldTrans);
+
+                    // get new object's implied object transformation
+                    const basegfx::B3DHomMatrix aNewObjectTrans(pNewCompoundObj->GetTransform());
+
+                    // get new object's range in 3D world coordinates in dest scene
+                    // as if it were already added
+                    const basegfx::B3DHomMatrix aObjectToWorldTrans(aSceneToWorldTrans * aNewObjectTrans);
+                    basegfx::B3DRange aObjectRange(pNewCompoundObj->GetBoundVolume());
+                    aObjectRange.transform(aObjectToWorldTrans);
+
+                    // get scale adaptation
+                    const basegfx::B3DVector aSceneScale(aSceneRange.getRange());
+                    const basegfx::B3DVector aObjectScale(aObjectRange.getRange());
+                    double fScale(1.0);
+
+                    // if new object's size in X,Y or Z is bigger that 80% of dest scene, adapt scale
+                    // to not change the scene by the inserted object
+                    const double fSizeFactor(0.5);
+
+                    if(aObjectScale.getX() * fScale > aSceneScale.getX() * fSizeFactor)
+                    {
+                        const double fObjSize(aObjectScale.getX() * fScale);
+                        const double fFactor((aSceneScale.getX() * fSizeFactor) / (basegfx::fTools::equalZero(fObjSize) ? 1.0 : fObjSize));
+                        fScale *= fFactor;
+                    }
+
+                    if(aObjectScale.getY() * fScale > aSceneScale.getY() * fSizeFactor)
+                    {
+                        const double fObjSize(aObjectScale.getY() * fScale);
+                        const double fFactor((aSceneScale.getY() * fSizeFactor) / (basegfx::fTools::equalZero(fObjSize) ? 1.0 : fObjSize));
+                        fScale *= fFactor;
+                    }
+
+                    if(aObjectScale.getZ() * fScale > aSceneScale.getZ() * fSizeFactor)
+                    {
+                        const double fObjSize(aObjectScale.getZ() * fScale);
+                        const double fFactor((aSceneScale.getZ() * fSizeFactor) / (basegfx::fTools::equalZero(fObjSize) ? 1.0 : fObjSize));
+                        fScale *= fFactor;
+                    }
+
+                    // get translation adaptation
+                    const basegfx::B3DPoint aSceneCenter(aSceneRange.getCenter());
+                    const basegfx::B3DPoint aObjectCenter(aObjectRange.getCenter());
+
+                    // build full modification transform. The object's transformation
+                    // shall be modified, so start at object coordinates; transform to 3d world coor
+                    basegfx::B3DHomMatrix aModifyingTransform(aObjectToWorldTrans);
+
+                    // translate to absolute center in 3d world coor
+                    aModifyingTransform.translate(-aObjectCenter.getX(), -aObjectCenter.getY(), -aObjectCenter.getZ());
+
+                    // scale to dest size in 3d world coor
+                    aModifyingTransform.scale(fScale, fScale, fScale);
+
+                    // translate to dest scene center in 3d world coor
+                    aModifyingTransform.translate(aSceneCenter.getX(), aSceneCenter.getY(), aSceneCenter.getZ());
+
+                    // transform from 3d world to dest object coordinates
+                    basegfx::B3DHomMatrix aWorldToObject(aObjectToWorldTrans);
+                    aWorldToObject.invert();
+                    aModifyingTransform = aWorldToObject * aModifyingTransform;
+
+                    // correct implied object transform by applying changing one in object coor
+                    pNewCompoundObj->SetTransform(aModifyingTransform * aNewObjectTrans);
+
+                    // fill and insert new object
+                    pNewCompoundObj->NbcSetLayer(pCompoundObj->GetLayer());
+                    pNewCompoundObj->NbcSetStyleSheet(pCompoundObj->GetStyleSheet(), true);
+                    pDstScene->InsertObject(pNewCompoundObj);
+                    bRetval = true;
+
+                    // Create undo
+                    if( GetModel()->IsUndoEnabled() )
+                        AddUndo(GetModel()->GetSdrUndoFactory().CreateUndoNewObject(*pNewCompoundObj));
+                }
+            }
+        }
+    }
+
+    return bRetval;
+}
+
+bool E3dView::IsConvertTo3DObjPossible() const
+{
+    bool bAny3D(false);
+    bool bGroupSelected(false);
+    bool bRetval(true);
+
+    for(size_t a=0; !bAny3D && a<GetMarkedObjectCount(); ++a)
+    {
+        SdrObject *pObj = GetMarkedObjectByIndex(a);
+        if(pObj)
+        {
+            ImpIsConvertTo3DPossible(pObj, bAny3D, bGroupSelected);
+        }
+    }
+
+    bRetval = !bAny3D
+        && (
+           IsConvertToPolyObjPossible()
+        || IsConvertToPathObjPossible()
+        || IsImportMtfPossible());
+    return bRetval;
+}
+
+void E3dView::ImpIsConvertTo3DPossible(SdrObject const * pObj, bool& rAny3D,
+    bool& rGroupSelected) const
+{
+    if(!pObj)
+        return;
+
+    if(dynamic_cast< const E3dObject* >(pObj) !=  nullptr)
+    {
+        rAny3D = true;
+    }
+    else
+    {
+        if(pObj->IsGroupObject())
+        {
+            SdrObjListIter aIter(*pObj, SdrIterMode::DeepNoGroups);
+            while(aIter.IsMore())
+            {
+                SdrObject* pNewObj = aIter.Next();
+                ImpIsConvertTo3DPossible(pNewObj, rAny3D, rGroupSelected);
+            }
+            rGroupSelected = true;
+        }
+    }
+}
+
+void E3dView::ImpChangeSomeAttributesFor3DConversion(SdrObject* pObj)
+{
+    if(dynamic_cast<const SdrTextObj*>( pObj) ==  nullptr)
+        return;
+
+    const SfxItemSet& rSet = pObj->GetMergedItemSet();
+    const SvxColorItem& rTextColorItem = rSet.Get(EE_CHAR_COLOR);
+    if(rTextColorItem.GetValue() != COL_BLACK)
+        return;
+
+    //For black text objects, the color set to gray
+    if(pObj->getSdrPageFromSdrObject())
+    {
+        // if black is only default attribute from
+        // pattern set it hard so that it is used in undo.
+        pObj->SetMergedItem(SvxColorItem(COL_BLACK, EE_CHAR_COLOR));
+
+        // add undo now
+        if( GetModel()->IsUndoEnabled() )
+            AddUndo(GetModel()->GetSdrUndoFactory().CreateUndoAttrObject(*pObj));
+    }
+
+    pObj->SetMergedItem(SvxColorItem(COL_GRAY, EE_CHAR_COLOR));
+}
+
+void E3dView::ImpChangeSomeAttributesFor3DConversion2(SdrObject* pObj)
+{
+    auto pPathObj = dynamic_cast<const SdrPathObj*>( pObj);
+    if(!pPathObj)
+        return;
+
+    const SfxItemSet& rSet = pObj->GetMergedItemSet();
+    sal_Int32 nLineWidth = rSet.Get(XATTR_LINEWIDTH).GetValue();
+    drawing::LineStyle eLineStyle = rSet.Get(XATTR_LINESTYLE).GetValue();
+    drawing::FillStyle eFillStyle = rSet.Get(XATTR_FILLSTYLE).GetValue();
+
+    if(pPathObj->IsClosed()
+        && eLineStyle == drawing::LineStyle_SOLID
+        && !nLineWidth
+        && eFillStyle != drawing::FillStyle_NONE)
+    {
+        if(pObj->getSdrPageFromSdrObject() && GetModel()->IsUndoEnabled() )
+        {
+            AddUndo(GetModel()->GetSdrUndoFactory().CreateUndoAttrObject(*pObj));
+        }
+
+        pObj->SetMergedItem(XLineStyleItem(drawing::LineStyle_NONE));
+        pObj->SetMergedItem(XLineWidthItem(0));
+    }
+}
+
+void E3dView::ImpCreateSingle3DObjectFlat(E3dScene* pScene, SdrObject* pObj, bool bExtrude, double fDepth, basegfx::B2DHomMatrix const & rLatheMat)
+{
+    // Single PathObject, transform this
+    SdrPathObj* pPath = dynamic_cast<SdrPathObj*>( pObj );
+
+    if(!pPath)
+        return;
+
+    E3dDefaultAttributes aDefault = Get3DDefaultAttributes();
+
+    if(bExtrude)
+    {
+        aDefault.SetDefaultExtrudeCharacterMode(true);
+    }
+    else
+    {
+        aDefault.SetDefaultLatheCharacterMode(true);
+    }
+
+    // Get Itemset of the original object
+    SfxItemSet aSet(pObj->GetMergedItemSet());
+
+    drawing::FillStyle eFillStyle = aSet.Get(XATTR_FILLSTYLE).GetValue();
+
+    // line style turned off
+    aSet.Put(XLineStyleItem(drawing::LineStyle_NONE));
+
+    //Determining if FILL_Attribute is set.
+    if(!pPath->IsClosed() || eFillStyle == drawing::FillStyle_NONE)
+    {
+        // This SdrPathObj is not filled, leave the front and rear face out.
+        // Moreover, a two-sided representation necessary.
+        aDefault.SetDefaultExtrudeCloseFront(false);
+        aDefault.SetDefaultExtrudeCloseBack(false);
+
+        aSet.Put(makeSvx3DDoubleSidedItem(true));
+
+        // Set fill attribute
+        aSet.Put(XFillStyleItem(drawing::FillStyle_SOLID));
+
+        // Fill color must be the color line, because the object was
+        // previously just a line
+        Color aColorLine = aSet.Get(XATTR_LINECOLOR).GetColorValue();
+        aSet.Put(XFillColorItem(OUString(), aColorLine));
+    }
+
+    // Create a new extrude object
+    E3dObject* p3DObj = nullptr;
+    if(bExtrude)
+    {
+        p3DObj = new E3dExtrudeObj(pObj->getSdrModelFromSdrObject(), aDefault, pPath->GetPathPoly(), fDepth);
+    }
+    else
+    {
+        // rLatheMat expects coordinates with y-axis up, pPath uses y-axis down
+        basegfx::B2DHomMatrix aFlipVerticalMat(1.0, 0.0, 0.0, 0.0, -1.0, 0.0);
+        basegfx::B2DPolyPolygon aPolyPoly2D(pPath->GetPathPoly());
+        aPolyPoly2D.transform(aFlipVerticalMat);
+        aPolyPoly2D.transform(rLatheMat);
+        // ctor E3dLatheObj expects coordinates with y-axis down
+        aPolyPoly2D.transform(aFlipVerticalMat);
+        p3DObj = new E3dLatheObj(pObj->getSdrModelFromSdrObject(), aDefault, aPolyPoly2D);
+    }
+
+    // Set attribute
+    p3DObj->NbcSetLayer(pObj->GetLayer());
+
+    p3DObj->SetMergedItemSet(aSet);
+
+    p3DObj->NbcSetStyleSheet(pObj->GetStyleSheet(), true);
+
+    // Insert a new extrude object
+    pScene->InsertObject(p3DObj);
+}
+
+void E3dView::ImpCreate3DObject(E3dScene* pScene, SdrObject* pObj, bool bExtrude, double fDepth, basegfx::B2DHomMatrix const & rLatheMat)
+{
+    if(!pObj)
+        return;
+
+    // change text color attribute for not so dark colors
+    if(pObj->IsGroupObject())
+    {
+        SdrObjListIter aIter(*pObj, SdrIterMode::DeepWithGroups);
+        while(aIter.IsMore())
+        {
+            SdrObject* pGroupMember = aIter.Next();
+            ImpChangeSomeAttributesFor3DConversion(pGroupMember);
+        }
+    }
+    else
+        ImpChangeSomeAttributesFor3DConversion(pObj);
+
+    // convert completely to path objects
+    SdrObject* pNewObj1 = pObj->ConvertToPolyObj(false, false).release();
+
+    if(!pNewObj1)
+        return;
+
+    // change text color attribute for not so dark colors
+    if(pNewObj1->IsGroupObject())
+    {
+        SdrObjListIter aIter(*pNewObj1, SdrIterMode::DeepWithGroups);
+        while(aIter.IsMore())
+        {
+            SdrObject* pGroupMember = aIter.Next();
+            ImpChangeSomeAttributesFor3DConversion2(pGroupMember);
+        }
+    }
+    else
+        ImpChangeSomeAttributesFor3DConversion2(pNewObj1);
+
+    // convert completely to path objects
+    SdrObject* pNewObj2 = pObj->ConvertToContourObj(pNewObj1, true);
+
+    if(pNewObj2)
+    {
+        // add all to flat scene
+        if(pNewObj2->IsGroupObject())
+        {
+            SdrObjListIter aIter(*pNewObj2, SdrIterMode::DeepWithGroups);
+            while(aIter.IsMore())
+            {
+                SdrObject* pGroupMember = aIter.Next();
+                ImpCreateSingle3DObjectFlat(pScene, pGroupMember, bExtrude, fDepth, rLatheMat);
+            }
+        }
+        else
+            ImpCreateSingle3DObjectFlat(pScene, pNewObj2, bExtrude, fDepth, rLatheMat);
+
+        // delete object in between
+        if (pNewObj2 != pObj && pNewObj2 != pNewObj1)
+            SdrObject::Free( pNewObj2 );
+    }
+
+    // delete object in between
+    if (pNewObj1 != pObj)
+        SdrObject::Free( pNewObj1 );
+}
+
+void E3dView::ConvertMarkedObjTo3D(bool bExtrude, const basegfx::B2DPoint& rPnt1, const basegfx::B2DPoint& rPnt2)
+{
+    if(!AreObjectsMarked())
+        return;
+
+    // Create undo
+    if(bExtrude)
+        BegUndo(SvxResId(RID_SVX_3D_UNDO_EXTRUDE));
+    else
+        BegUndo(SvxResId(RID_SVX_3D_UNDO_LATHE));
+
+    SdrModel& rSdrModel(GetSdrMarkByIndex(0)->GetMarkedSdrObj()->getSdrModelFromSdrObject());
+
+    // Create a new scene for the created 3D object
+    E3dScene* pScene = new E3dScene(rSdrModel);
+
+    // Determine rectangle and possibly correct it
+    tools::Rectangle aRect = GetAllMarkedRect();
+    if(aRect.GetWidth() <= 1)
+        aRect.SetSize(Size(500, aRect.GetHeight()));
+    if(aRect.GetHeight() <= 1)
+        aRect.SetSize(Size(aRect.GetWidth(), 500));
+
+    // Determine the depth relative to the size of the selection
+    double fDepth = 0.0;
+    double fRot3D = 0.0;
+    basegfx::B2DHomMatrix aLatheMat;
+
+    if(bExtrude)
+    {
+        double fW = static_cast<double>(aRect.GetWidth());
+        double fH = static_cast<double>(aRect.GetHeight());
+        fDepth = sqrt(fW*fW + fH*fH) / 6.0;
+    }
+    if(!bExtrude)
+    {
+        // Create transformation for the polygons rotating body
+        if (rPnt1 != rPnt2)
+        {
+            // Rotation around control point #1 with set angle
+            // for 3D coordinates
+            basegfx::B2DPoint aDiff(rPnt1 - rPnt2);
+            fRot3D = atan2(aDiff.getY(), aDiff.getX()) - M_PI_2;
+
+            if(basegfx::fTools::equalZero(fabs(fRot3D)))
+                fRot3D = 0.0;
+
+            if(fRot3D != 0.0)
+            {
+                aLatheMat = basegfx::utils::createRotateAroundPoint(rPnt2, -fRot3D)
+                    * aLatheMat;
+            }
+        }
+
+        if (rPnt2.getX() != 0.0)
+        {
+            // Translation to Y=0 - axis
+            aLatheMat.translate(-rPnt2.getX(), 0.0);
+        }
+        else
+        {
+            aLatheMat.translate(static_cast<double>(-aRect.Left()), 0.0);
+        }
+
+        // Form the inverse matrix to determine the target expansion
+        basegfx::B2DHomMatrix aInvLatheMat(aLatheMat);
+        aInvLatheMat.invert();
+
+        // SnapRect extension enables mirroring in the axis of rotation
+        for(size_t a=0; a<GetMarkedObjectCount(); ++a)
+        {
+            SdrMark* pMark = GetSdrMarkByIndex(a);
+            SdrObject* pObj = pMark->GetMarkedSdrObj();
+            tools::Rectangle aTurnRect = pObj->GetSnapRect();
+            basegfx::B2DPoint aRot;
+            Point aRotPnt;
+
+            aRot = basegfx::B2DPoint(aTurnRect.Left(), -aTurnRect.Top());
+            aRot *= aLatheMat;
+            aRot.setX(-aRot.getX());
+            aRot *= aInvLatheMat;
+            aRotPnt = Point(static_cast<tools::Long>(aRot.getX() + 0.5), static_cast<tools::Long>(-aRot.getY() - 0.5));
+            aRect.Union(tools::Rectangle(aRotPnt, aRotPnt));
+
+            aRot = basegfx::B2DPoint(aTurnRect.Left(), -aTurnRect.Bottom());
+            aRot *= aLatheMat;
+            aRot.setX(-aRot.getX());
+            aRot *= aInvLatheMat;
+            aRotPnt = Point(static_cast<tools::Long>(aRot.getX() + 0.5), static_cast<tools::Long>(-aRot.getY() - 0.5));
+            aRect.Union(tools::Rectangle(aRotPnt, aRotPnt));
+
+            aRot = basegfx::B2DPoint(aTurnRect.Right(), -aTurnRect.Top());
+            aRot *= aLatheMat;
+            aRot.setX(-aRot.getX());
+            aRot *= aInvLatheMat;
+            aRotPnt = Point(static_cast<tools::Long>(aRot.getX() + 0.5), static_cast<tools::Long>(-aRot.getY() - 0.5));
+            aRect.Union(tools::Rectangle(aRotPnt, aRotPnt));
+
+            aRot = basegfx::B2DPoint(aTurnRect.Right(), -aTurnRect.Bottom());
+            aRot *= aLatheMat;
+            aRot.setX(-aRot.getX());
+            aRot *= aInvLatheMat;
+            aRotPnt = Point(static_cast<tools::Long>(aRot.getX() + 0.5), static_cast<tools::Long>(-aRot.getY() - 0.5));
+            aRect.Union(tools::Rectangle(aRotPnt, aRotPnt));
+        }
+    }
+
+    // Walk through the selection and convert it into 3D, complete with
+    // Conversion to SdrPathObject, also fonts
+    for(size_t a=0; a<GetMarkedObjectCount(); ++a)
+    {
+        SdrMark* pMark = GetSdrMarkByIndex(a);
+        SdrObject* pObj = pMark->GetMarkedSdrObj();
+
+        ImpCreate3DObject(pScene, pObj, bExtrude, fDepth, aLatheMat);
+    }
+
+    if(pScene->GetSubList() && pScene->GetSubList()->GetObjCount() != 0)
+    {
+        // Arrange all created objects by depth
+        if(bExtrude)
+            DoDepthArrange(pScene, fDepth);
+
+        // Center 3D objects in the middle of the overall rectangle
+        basegfx::B3DPoint aCenter(pScene->GetBoundVolume().getCenter());
+        basegfx::B3DHomMatrix aMatrix;
+
+        aMatrix.translate(-aCenter.getX(), -aCenter.getY(), -aCenter.getZ());
+        pScene->SetTransform(aMatrix * pScene->GetTransform());
+
+        // Initialize scene
+        pScene->NbcSetSnapRect(aRect);
+        basegfx::B3DRange aBoundVol = pScene->GetBoundVolume();
+        InitScene(pScene, static_cast<double>(aRect.GetWidth()), static_cast<double>(aRect.GetHeight()), aBoundVol.getDepth());
+
+        // Insert scene instead of the first selected object and throw away
+        // all the old objects
+        SdrObject* pRepObj = GetMarkedObjectByIndex(0);
+        SdrPageView* pPV = GetSdrPageViewOfMarkedByIndex(0);
+        MarkObj(pRepObj, pPV, true);
+        ReplaceObjectAtView(pRepObj, *pPV, pScene, false);
+        DeleteMarked();
+        MarkObj(pScene, pPV);
+
+        // Rotate Rotation body around the axis of rotation
+        if(!bExtrude && fRot3D != 0.0)
+        {
+            basegfx::B3DHomMatrix aRotate;
+            aRotate.rotate(0.0, 0.0, fRot3D);
+            pScene->SetTransform(aRotate * pScene->GetTransform());
+        }
+
+        // Set default rotation
+        {
+            basegfx::B3DHomMatrix aRotate;
+            aRotate.rotate(basegfx::deg2rad(20.0), 0.0, 0.0);
+            // E3DModifySceneSnapRectUpdater updates the 2D representation of the scene.
+            // It prepares things in ctor and acts in dtor.
+            E3DModifySceneSnapRectUpdater aUpdater(pScene->getSdrObjectFromSdrObjList());
+            pScene->SetTransform(aRotate * pScene->GetTransform());
+        }
+    }
+    else
+    {
+        // No 3D object was created, throw away everything
+        // always use SdrObject::Free(...) for SdrObjects (!)
+        SdrObject* pTemp(pScene);
+        SdrObject::Free(pTemp);
+    }
+
+    EndUndo();
+}
+
+//Arrange all created extrude objects by depth
+
+namespace {
+
+struct E3dDepthNeighbour
+{
+    E3dExtrudeObj*              mpObj;
+    basegfx::B2DPolyPolygon     maPreparedPolyPolygon;
+
+    E3dDepthNeighbour(E3dExtrudeObj* pObj, basegfx::B2DPolyPolygon const & rPreparedPolyPolygon)
+    :   mpObj(pObj),
+        maPreparedPolyPolygon(rPreparedPolyPolygon)
+    {
+    }
+};
+
+struct E3dDepthLayer
+{
+    E3dDepthLayer*              mpDown;
+    std::vector<E3dDepthNeighbour> mvNeighbours;
+
+    E3dDepthLayer()
+    :   mpDown(nullptr)
+    {
+    }
+};
+
+}
+
+void E3dView::DoDepthArrange(E3dScene const * pScene, double fDepth)
+{
+    if(!(pScene && pScene->GetSubList() && pScene->GetSubList()->GetObjCount() > 1))
+        return;
+
+    SdrObjList* pSubList = pScene->GetSubList();
+    SdrObjListIter aIter(pSubList, SdrIterMode::Flat);
+    E3dDepthLayer* pBaseLayer = nullptr;
+    E3dDepthLayer* pLayer = nullptr;
+    sal_Int32 nNumLayers = 0;
+
+    while(aIter.IsMore())
+    {
+        E3dExtrudeObj* pExtrudeObj = dynamic_cast< E3dExtrudeObj* >(aIter.Next());
+
+        if(pExtrudeObj)
+        {
+            const basegfx::B2DPolyPolygon aExtrudePoly(
+                basegfx::utils::prepareForPolygonOperation(pExtrudeObj->GetExtrudePolygon()));
+            const SfxItemSet& rLocalSet = pExtrudeObj->GetMergedItemSet();
+            const drawing::FillStyle eLocalFillStyle = rLocalSet.Get(XATTR_FILLSTYLE).GetValue();
+            const Color aLocalColor = rLocalSet.Get(XATTR_FILLCOLOR).GetColorValue();
+
+            // sort in ExtrudeObj
+            if(pLayer)
+            {
+                // do we have overlap with an object of this layer?
+                bool bOverlap(false);
+
+                for(const auto& rAct : pLayer->mvNeighbours)
+                {
+                    // do rAct.mpObj and pExtrudeObj overlap? Check by
+                    // using logical AND clipping
+                    const basegfx::B2DPolyPolygon aAndPolyPolygon(
+                        basegfx::utils::solvePolygonOperationAnd(
+                            aExtrudePoly,
+                            rAct.maPreparedPolyPolygon));
+
+                    if(aAndPolyPolygon.count() != 0)
+                    {
+                        // second criteria: is another fillstyle or color used?
+                        const SfxItemSet& rCompareSet = rAct.mpObj->GetMergedItemSet();
+
+                        drawing::FillStyle eCompareFillStyle = rCompareSet.Get(XATTR_FILLSTYLE).GetValue();
+
+                        if(eLocalFillStyle == eCompareFillStyle)
+                        {
+                            if(eLocalFillStyle == drawing::FillStyle_SOLID)
+                            {
+                                Color aCompareColor = rCompareSet.Get(XATTR_FILLCOLOR).GetColorValue();
+
+                                if(aCompareColor == aLocalColor)
+                                {
+                                    continue;
+                                }
+                            }
+                            else if(eLocalFillStyle == drawing::FillStyle_NONE)
+                            {
+                                continue;
+                            }
+                        }
+
+                        bOverlap = true;
+                        break;
+                    }
+                }
+
+                if(bOverlap)
+                {
+                    // yes, start a new layer
+                    pLayer->mpDown = new E3dDepthLayer;
+                    pLayer = pLayer->mpDown;
+                    nNumLayers++;
+                    pLayer->mvNeighbours.emplace_back(pExtrudeObj, aExtrudePoly);
+                }
+                else
+                {
+                    // no, add to current layer
+                    pLayer->mvNeighbours.emplace(pLayer->mvNeighbours.begin(), pExtrudeObj, aExtrudePoly);
+                }
+            }
+            else
+            {
+                // first layer ever
+                pBaseLayer = new E3dDepthLayer;
+                pLayer = pBaseLayer;
+                nNumLayers++;
+                pLayer->mvNeighbours.emplace_back(pExtrudeObj, aExtrudePoly);
+            }
+        }
+    }
+
+    // number of layers is done
+    if(nNumLayers > 1)
+    {
+        // need to be arranged
+        double fMinDepth = fDepth * 0.8;
+        double fStep = (fDepth - fMinDepth) / static_cast<double>(nNumLayers);
+        pLayer = pBaseLayer;
+
+        while(pLayer)
+        {
+            // move along layer
+            for(auto& rAct : pLayer->mvNeighbours)
+            {
+                // adapt extrude value
+                rAct.mpObj->SetMergedItem(SfxUInt32Item(SDRATTR_3DOBJ_DEPTH, sal_uInt32(fMinDepth + 0.5)));
+            }
+
+            // next layer
+            pLayer = pLayer->mpDown;
+            fMinDepth += fStep;
+        }
+    }
+
+    // cleanup
+    while(pBaseLayer)
+    {
+        pLayer = pBaseLayer->mpDown;
+        delete pBaseLayer;
+        pBaseLayer = pLayer;
+    }
+}
+
+// Start drag, create for 3D objects before possibly drag method
+
+bool E3dView::BegDragObj(const Point& rPnt, OutputDevice* pOut,
+    SdrHdl* pHdl, short nMinMov,
+    SdrDragMethod* pForcedMeth)
+{
+    if(Is3DRotationCreationActive() && GetMarkedObjectCount())
+    {
+        // Determine all selected polygons and return the mirrored helper overlay
+        mpMirrorOverlay->SetMirrorAxis(maRef1, maRef2);
+    }
+    else
+    {
+        bool bOwnActionNecessary;
+        if (pHdl == nullptr)
+        {
+           bOwnActionNecessary = true;
+        }
+        else if (pHdl->IsVertexHdl() || pHdl->IsCornerHdl())
+        {
+           bOwnActionNecessary = true;
+        }
+        else
+        {
+           bOwnActionNecessary = false;
+        }
+
+        if(bOwnActionNecessary && GetMarkedObjectCount() > 0)
+        {
+            E3dDragConstraint eConstraint = E3dDragConstraint::XYZ;
+            bool bThereAreRootScenes = false;
+            bool bThereAre3DObjects = false;
+            const size_t nCnt = GetMarkedObjectCount();
+            for(size_t nObjs = 0; nObjs < nCnt; ++nObjs)
+            {
+                SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+                if(pObj)
+                {
+                    if( auto pScene = dynamic_cast< const E3dScene* >(pObj) )
+                        if( pScene->getRootE3dSceneFromE3dObject() == pObj )
+                            bThereAreRootScenes = true;
+
+                    if(dynamic_cast< const E3dObject* >(pObj) !=  nullptr)
+                    {
+                        bThereAre3DObjects = true;
+                    }
+                }
+            }
+            if( bThereAre3DObjects )
+            {
+                meDragHdl = ( pHdl == nullptr ? SdrHdlKind::Move : pHdl->GetKind() );
+                switch ( meDragMode )
+                {
+                    case SdrDragMode::Rotate:
+                    case SdrDragMode::Shear:
+                    {
+                        switch ( meDragHdl )
+                        {
+                            case SdrHdlKind::Left:
+                            case SdrHdlKind::Right:
+                            {
+                                eConstraint = E3dDragConstraint::X;
+                            }
+                            break;
+
+                            case SdrHdlKind::Upper:
+                            case SdrHdlKind::Lower:
+                            {
+                                eConstraint = E3dDragConstraint::Y;
+                            }
+                            break;
+
+                            case SdrHdlKind::UpperLeft:
+                            case SdrHdlKind::UpperRight:
+                            case SdrHdlKind::LowerLeft:
+                            case SdrHdlKind::LowerRight:
+                            {
+                                eConstraint = E3dDragConstraint::Z;
+                            }
+                            break;
+                            default: break;
+                        }
+
+                        // do not mask the allowed rotations
+                        eConstraint &= E3dDragConstraint::XYZ;
+                        pForcedMeth = new E3dDragRotate(*this, GetMarkedObjectList(), eConstraint, IsSolidDragging());
+                    }
+                    break;
+
+                    case SdrDragMode::Move:
+                    {
+                        if(!bThereAreRootScenes)
+                        {
+                            pForcedMeth = new E3dDragMove(*this, GetMarkedObjectList(), meDragHdl, eConstraint, IsSolidDragging());
+                        }
+                    }
+                    break;
+
+                    // later on
+                    case SdrDragMode::Mirror:
+                    case SdrDragMode::Crook:
+                    case SdrDragMode::Transparence:
+                    case SdrDragMode::Gradient:
+                    default:
+                    {
+                    }
+                    break;
+                }
+            }
+        }
+    }
+    return SdrView::BegDragObj(rPnt, pOut, pHdl, nMinMov, pForcedMeth);
+}
+
+// Set current 3D drawing object, create the scene for this
+E3dScene* E3dView::SetCurrent3DObj(E3dObject* p3DObj)
+{
+    DBG_ASSERT(p3DObj != nullptr, "Who puts in a NULL-pointer here");
+
+    // get transformed BoundVolume of the object
+    basegfx::B3DRange aVolume(p3DObj->GetBoundVolume());
+    aVolume.transform(p3DObj->GetTransform());
+    double fW(aVolume.getWidth());
+    double fH(aVolume.getHeight());
+
+    tools::Rectangle aRect(0,0, static_cast<tools::Long>(fW), static_cast<tools::Long>(fH));
+
+    E3dScene* pScene = new E3dScene(p3DObj->getSdrModelFromSdrObject());
+
+    InitScene(pScene, fW, fH, aVolume.getMaxZ() + ((fW + fH) / 4.0));
+
+    pScene->InsertObject(p3DObj);
+    pScene->NbcSetSnapRect(aRect);
+
+    return pScene;
+}
+
+void E3dView::InitScene(E3dScene* pScene, double fW, double fH, double fCamZ)
+{
+    Camera3D aCam(pScene->GetCamera());
+
+    aCam.SetAutoAdjustProjection(false);
+    aCam.SetViewWindow(- fW / 2, - fH / 2, fW, fH);
+    basegfx::B3DPoint aLookAt;
+
+    double fDefaultCamPosZ = GetDefaultCamPosZ();
+    basegfx::B3DPoint aCamPos(0.0, 0.0, fCamZ < fDefaultCamPosZ ? fDefaultCamPosZ : fCamZ);
+
+    aCam.SetPosAndLookAt(aCamPos, aLookAt);
+    aCam.SetFocalLength(GetDefaultCamFocal());
+    pScene->SetCamera(aCam);
+}
+
+void E3dView::Start3DCreation()
+{
+    if (!GetMarkedObjectCount())
+        return;
+
+    //positioned
+    tools::Long          nOutMin = 0;
+    tools::Long          nOutMax = 0;
+    tools::Long          nMinLen = 0;
+    tools::Long          nObjDst = 0;
+    tools::Long          nOutHgt = 0;
+    OutputDevice* pOut    = GetFirstOutputDevice();
+
+    // first determine representation boundaries
+    if (pOut != nullptr)
+    {
+        nMinLen = pOut->PixelToLogic(Size(0,50)).Height();
+        nObjDst = pOut->PixelToLogic(Size(0,20)).Height();
+
+        tools::Long nDst = pOut->PixelToLogic(Size(0,10)).Height();
+
+        nOutMin =  -pOut->GetMapMode().GetOrigin().Y();
+        nOutMax =  pOut->GetOutputSize().Height() - 1 + nOutMin;
+        nOutMin += nDst;
+        nOutMax -= nDst;
+
+        if (nOutMax - nOutMin < nDst)
+        {
+            nOutMin += nOutMax + 1;
+            nOutMin /= 2;
+            nOutMin -= (nDst + 1) / 2;
+            nOutMax  = nOutMin + nDst;
+        }
+
+        nOutHgt = nOutMax - nOutMin;
+
+        tools::Long nTemp = nOutHgt / 4;
+        if (nTemp > nMinLen) nMinLen = nTemp;
+    }
+
+    // and then attach the marks at the top and bottom of the object
+    basegfx::B2DRange aR;
+    for(size_t nMark = 0; nMark < GetMarkedObjectCount(); ++nMark)
+    {
+        SdrObject* pMark = GetMarkedObjectByIndex(nMark);
+        basegfx::B2DPolyPolygon aXPP(pMark->TakeXorPoly());
+        aR.expand(basegfx::utils::getRange(aXPP));
+    }
+
+    basegfx::B2DPoint aCenter(aR.getCenter());
+    tools::Long      nMarkHgt = basegfx::fround(aR.getHeight()) - 1;
+    tools::Long      nHgt     = nMarkHgt + nObjDst * 2;
+
+    if (nHgt < nMinLen) nHgt = nMinLen;
+
+    tools::Long nY1 = basegfx::fround(aCenter.getY()) - (nHgt + 1) / 2;
+    tools::Long nY2 = nY1 + nHgt;
+
+    if (pOut && (nMinLen > nOutHgt)) nMinLen = nOutHgt;
+    if (pOut)
+    {
+        if (nY1 < nOutMin)
+        {
+            nY1 = nOutMin;
+            if (nY2 < nY1 + nMinLen) nY2 = nY1 + nMinLen;
+        }
+        if (nY2 > nOutMax)
+        {
+            nY2 = nOutMax;
+            if (nY1 > nY2 - nMinLen) nY1 = nY2 - nMinLen;
+        }
+    }
+
+    maRef1.setX( basegfx::fround(aR.getMinX()) );    // Initial move axis 2/100mm to the left
+    maRef1.setY( nY1 );
+    maRef2.setX( maRef1.X() );
+    maRef2.setY( nY2 );
+
+    // Turn on marks
+    SetMarkHandles(nullptr);
+
+    //HMHif (bVis) ShowMarkHdl();
+    if (AreObjectsMarked()) MarkListHasChanged();
+
+    // Show mirror polygon IMMEDIATELY
+    const SdrHdlList &aHdlList = GetHdlList();
+    mpMirrorOverlay.reset(new Impl3DMirrorConstructOverlay(*this));
+    mpMirrorOverlay->SetMirrorAxis(aHdlList.GetHdl(SdrHdlKind::Ref1)->GetPos(), aHdlList.GetHdl(SdrHdlKind::Ref2)->GetPos());
+}
+
+// what happens with a mouse movement when the object is created?
+
+void E3dView::MovAction(const Point& rPnt)
+{
+    if(Is3DRotationCreationActive())
+    {
+        SdrHdl* pHdl = GetDragHdl();
+
+        if (pHdl)
+        {
+            SdrHdlKind eHdlKind = pHdl->GetKind();
+
+            // reacts only due to a mirror axis
+            if ((eHdlKind == SdrHdlKind::Ref1) ||
+                (eHdlKind == SdrHdlKind::Ref2) ||
+                (eHdlKind == SdrHdlKind::MirrorAxis))
+            {
+                const SdrHdlList &aHdlList = GetHdlList ();
+
+                // delete the mirrored polygon, mirrors the original and draws
+                // it anew
+                SdrView::MovAction (rPnt);
+                mpMirrorOverlay->SetMirrorAxis(
+                    aHdlList.GetHdl (SdrHdlKind::Ref1)->GetPos(),
+                    aHdlList.GetHdl (SdrHdlKind::Ref2)->GetPos());
+            }
+        }
+        else
+        {
+            SdrView::MovAction (rPnt);
+        }
+    }
+    else
+    {
+        SdrView::MovAction (rPnt);
+    }
+}
+
+// The End. Create object and any child objects through ImpCreate3DLathe.
+// With the parameter value sal_True (SDefault: sal_False) is simply a
+// rotation body  created, without letting the user set the position of the
+// axis. It is sufficient with this call, if an object is selected.
+// (No initialization necessary)
+
+void E3dView::End3DCreation(bool bUseDefaultValuesForMirrorAxes)
+{
+    ResetCreationActive();
+
+    if(!AreObjectsMarked())
+        return;
+
+    if(bUseDefaultValuesForMirrorAxes)
+    {
+        tools::Rectangle aRect = GetAllMarkedRect();
+        if(aRect.GetWidth() <= 1)
+            aRect.SetSize(Size(500, aRect.GetHeight()));
+        if(aRect.GetHeight() <= 1)
+            aRect.SetSize(Size(aRect.GetWidth(), 500));
+
+        basegfx::B2DPoint aPnt1(aRect.Left(), -aRect.Top());
+        basegfx::B2DPoint aPnt2(aRect.Left(), -aRect.Bottom());
+
+        ConvertMarkedObjTo3D(false, aPnt1, aPnt2);
+    }
+    else
+    {
+        // Turn off helper overlay
+        // Determine from the handle positions and the displacement of
+        // the points
+        const SdrHdlList &aHdlList = GetHdlList();
+        Point aMirrorRef1 = aHdlList.GetHdl(SdrHdlKind::Ref1)->GetPos();
+        Point aMirrorRef2 = aHdlList.GetHdl(SdrHdlKind::Ref2)->GetPos();
+
+        basegfx::B2DPoint aPnt1(aMirrorRef1.X(), -aMirrorRef1.Y());
+        basegfx::B2DPoint aPnt2(aMirrorRef2.X(), -aMirrorRef2.Y());
+
+        ConvertMarkedObjTo3D(false, aPnt1, aPnt2);
+    }
+}
+
+E3dView::~E3dView ()
+{
+}
+
+void E3dView::ResetCreationActive ()
+{
+    mpMirrorOverlay.reset();
+}
+
+void E3dView::InitView ()
+{
+    mpMirrorOverlay          = nullptr;
+}
+
+bool E3dView::IsBreak3DObjPossible() const
+{
+    const size_t nCount = GetMarkedObjectCount();
+
+    if (nCount > 0)
+    {
+        for (size_t i = 0; i < nCount; ++i)
+        {
+            SdrObject* pObj = GetMarkedObjectByIndex(i);
+
+            if (auto p3dObject = dynamic_cast< E3dObject* >(pObj))
+            {
+                if(!p3dObject->IsBreakObjPossible())
+                    return false;
+            }
+            else
+            {
+                return false;
+            }
+        }
+    }
+    else
+    {
+        return false;
+    }
+
+    return true;
+}
+
+void E3dView::Break3DObj()
+{
+    if(!IsBreak3DObjPossible())
+        return;
+
+    // ALL selected objects are changed
+    const size_t nCount = GetMarkedObjectCount();
+
+    BegUndo(SvxResId(RID_SVX_3D_UNDO_BREAK_LATHE));
+    for(size_t a=0; a<nCount; ++a)
+    {
+        E3dObject* pObj = static_cast<E3dObject*>(GetMarkedObjectByIndex(a));
+        BreakSingle3DObj(pObj);
+    }
+    DeleteMarked();
+    EndUndo();
+}
+
+void E3dView::BreakSingle3DObj(E3dObject* pObj)
+{
+    if(dynamic_cast< const E3dScene* >(pObj) !=  nullptr)
+    {
+        SdrObjList* pSubList = pObj->GetSubList();
+        SdrObjListIter aIter(pSubList, SdrIterMode::Flat);
+
+        while(aIter.IsMore())
+        {
+            E3dObject* pSubObj = static_cast<E3dObject*>(aIter.Next());
+            BreakSingle3DObj(pSubObj);
+        }
+    }
+    else
+    {
+        SdrAttrObj* pNewObj = pObj->GetBreakObj().release();
+        if (pNewObj)
+        {
+            if (InsertObjectAtView(pNewObj, *GetSdrPageView(), SdrInsertFlags::DONTMARK))
+            {
+                pNewObj->SetChanged();
+                pNewObj->BroadcastObjectChange();
+            }
+        }
+    }
+}
+
+void E3dView::CheckPossibilities()
+{
+    // call parent
+    SdrView::CheckPossibilities();
+
+    // Set other flags
+    if(!(m_bGroupPossible || m_bUnGroupPossible || m_bGrpEnterPossible))
+        return;
+
+    const size_t nMarkCnt = GetMarkedObjectCount();
+    bool bCompound = false;
+    bool b3DObject = false;
+    for(size_t nObjs = 0; (nObjs < nMarkCnt) && !bCompound; ++nObjs)
+    {
+        SdrObject *pObj = GetMarkedObjectByIndex(nObjs);
+        if(dynamic_cast< const E3dCompoundObject* >(pObj))
+            bCompound = true;
+        if(dynamic_cast< const E3dObject* >(pObj))
+            b3DObject = true;
+    }
+
+    // So far: there are two or more of any objects selected. See if
+    // compound objects are involved. If yes, ban grouping.
+    if(m_bGroupPossible && bCompound)
+        m_bGroupPossible = false;
+
+    if(m_bUnGroupPossible && b3DObject)
+        m_bUnGroupPossible = false;
+
+    if(m_bGrpEnterPossible && bCompound)
+        m_bGrpEnterPossible = false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */