summaryrefslogtreecommitdiffstats
path: root/svx/source/engine3d/view3d.cxx
blob: 844d96b48727db2bb3f3ae76c0c9cc43672d74a5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
/* -*- 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>
#include <utility>

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(
                        std::move(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 = DynCastE3dObject(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 = DynCastE3dObject(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 = DynCastE3dObject(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 = DynCastE3dObject(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);

            for (const rtl::Reference<SdrObject>& pSrcOb : *pSrcPg)
            {
                if(const E3dScene* p3dscene = DynCastE3dScene( pSrcOb.get()))
                {
                    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(DynCastE3dScene(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);

            // calculate offset for paste
            tools::Rectangle aR = pSrcPg->GetAllObjBoundRect();
            Point aDist(aPos - aR.Center());

            // Insert sub-objects for scenes
            for (const rtl::Reference<SdrObject>& pSrcOb : *pSrcPg)
            {
                if(const E3dScene* p3dscene = DynCastE3dScene(pSrcOb.get()))
                {
                    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 (const rtl::Reference<SdrObject>& pObj : *pSrcScene->GetSubList())
        {
            E3dCompoundObject* pCompoundObj = dynamic_cast< E3dCompoundObject* >(pObj.get());

            if(pCompoundObj)
            {
                rtl::Reference<E3dCompoundObject> pNewCompoundObj = SdrObject::Clone(*pCompoundObj, 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.get());
                    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(DynCastE3dObject(pObj))
    {
        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(DynCastSdrTextObj( 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
    rtl::Reference<E3dObject> p3DObj;
    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, std::move(aPolyPoly2D));
    }

    // Set attribute
    p3DObj->NbcSetLayer(pObj->GetLayer());

    p3DObj->SetMergedItemSet(aSet);

    p3DObj->NbcSetStyleSheet(pObj->GetStyleSheet(), true);

    // Insert a new extrude object
    pScene->InsertObject(p3DObj.get());
}

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
    rtl::Reference<SdrObject> pNewObj1 = pObj->ConvertToPolyObj(false, false);

    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.get());

    // convert completely to path objects
    rtl::Reference<SdrObject> pNewObj2 = pObj->ConvertToContourObj(pNewObj1.get(), 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.get(), bExtrude, fDepth, rLatheMat);
    }
}

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
    rtl::Reference<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)
    {
        fDepth = std::hypot(aRect.GetWidth(), aRect.GetHeight()) / 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.get(), pObj, bExtrude, fDepth, aLatheMat);
    }

    if(pScene->GetSubList() && pScene->GetSubList()->GetObjCount() != 0)
    {
        // Arrange all created objects by depth
        if(bExtrude)
            DoDepthArrange(pScene.get(), 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.get(), 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.get(), false);
        DeleteMarked();
        MarkObj(pScene.get(), 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
        pScene.clear();

    EndUndo();
}

//Arrange all created extrude objects by depth

namespace {

struct E3dDepthNeighbour
{
    E3dExtrudeObj*              mpObj;
    basegfx::B2DPolyPolygon     maPreparedPolyPolygon;

    E3dDepthNeighbour(E3dExtrudeObj* pObj, basegfx::B2DPolyPolygon aPreparedPolyPolygon)
    :   mpObj(pObj),
        maPreparedPolyPolygon(std::move(aPreparedPolyPolygon))
    {
    }
};

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( const E3dScene* pScene = DynCastE3dScene(pObj) )
                        if( pScene->getRootE3dSceneFromE3dObject() == pObj )
                            bThereAreRootScenes = true;

                    if(DynCastE3dObject(pObj))
                    {
                        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
rtl::Reference<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));

    rtl::Reference<E3dScene> pScene = new E3dScene(p3DObj->getSdrModelFromSdrObject());

    InitScene(pScene.get(), 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 = DynCastE3dObject(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(DynCastE3dScene(pObj))
    {
        SdrObjList* pSubList = pObj->GetSubList();
        SdrObjListIter aIter(pSubList, SdrIterMode::Flat);

        while(aIter.IsMore())
        {
            E3dObject* pSubObj = static_cast<E3dObject*>(aIter.Next());
            BreakSingle3DObj(pSubObj);
        }
    }
    else
    {
        rtl::Reference<SdrAttrObj> pNewObj = pObj->GetBreakObj();
        if (pNewObj)
        {
            if (InsertObjectAtView(pNewObj.get(), *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(DynCastE3dObject(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: */