GLViewer.cpp 78.3 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/*
 *	(c) LSIIT, UMR CNRS/UdS
 *	Authors: O. Gnevaux, F. Larue.
 *
 *	See licence.txt for additional information.
 */


#include "GLViewer.h"

#include <fstream>
#include <iostream>
#include <sstream>
#include "InfoBarManager.h"

#include <SelectionManager.h>
#include <SelectionToolBox.h>
#include <SelectionToolDisk.h>
#include <SelectionToolLasso.h>




24
void GLViewer::DisplayableInfo::Initialize( DisplayableInterface *displayable,
25
                                            DisplayableList::iterator priorityPos,
26
27
28
29
30
31
32
33
34
35
36
37
                                            UIParamSet &params )
{
    this->displayable = displayable;
    this->posInPriorityList = priorityPos;

    displayable->initialize( params );

    displayable->transformation( this->userTransform );
    this->packingTransform.setToIdentity();
    this->fullTransform = this->userTransform * this->packingTransform;

    displayable->boundingBox( this->boundingBox );
38

39
40
41
42
    this->selectionMgr.clear();
    displayable->selectionManagers( this->selectionMgr );

    currentSelectionMgr = NULL;
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
const char* GLViewer::s_PickingVPG =
    "#version 330\n"

    "uniform mat4 projectionMatrix;"
    "uniform mat4 viewMatrix;"

    "in vec3 vertexPosition;"

    "out float depth;"
    "out vec3 vertex;"

    "void main()"
    "{"
    "   depth  = length( (viewMatrix * vec4(vertexPosition,1.0)).xyz );"
    "   vertex = vertexPosition;"

    "   gl_Position = projectionMatrix * viewMatrix * vec4(vertexPosition,1.0);"
    "}";

const char* GLViewer::s_PickingFPG =
    "uniform int u_ObjectId;"

    "in float depth;"
    "in vec3 vertex;"

    "void main()"
    "{"
    "   gl_FragData[0].x = float( u_ObjectId      & 255) / 255.0;"
    "   gl_FragData[0].y = float((u_ObjectId>> 8) & 255) / 255.0;"
    "   gl_FragData[0].z = float((u_ObjectId>>16) & 255) / 255.0;"
    "   gl_FragData[0].w = float((u_ObjectId>>24) & 255) / 255.0;"
    "   gl_FragData[1] = vec4( vertex, depth );"
    "}";


const char* GLViewer::s_ZBufferVPG =
    "#version 330\n"

    "uniform mat4 fullTransformMatrix;"

    "in vec3 vertexPosition;"

    "void main()"
    "{"
    "   gl_Position = fullTransformMatrix * vec4(vertexPosition,1.0);"
    "}";

const char* GLViewer::s_ZBufferFPG =
    "void main()"
    "{"
    "   gl_FragData[0] = vec4( 0.0, 0.0, 0.0, 1.0 );"
    "}";


GLViewer::GLViewer( DisplayDoF dof,
                    QWidget *parent,
Frédéric Larue's avatar
Frédéric Larue committed
104
105
106
107
                    Qt::WindowFlags f ) :
    QOpenGLWidget( parent, f ),
    m_DisplayOptionsLayout( NULL ),
    m_InfoBarManager( NULL )
108
{
109
    initMetricGrids();
110
111
112
113
114
115
116
    init( dof );
}


GLViewer::GLViewer( DisplayDoF dof,
                    const QSurfaceFormat &format,
                    QWidget *parent,
Frédéric Larue's avatar
Frédéric Larue committed
117
118
119
120
                    Qt::WindowFlags f ) :
    QOpenGLWidget( parent, f ),
    m_DisplayOptionsLayout( NULL ),
    m_InfoBarManager( NULL )
121
122
{
	setFormat( format );
123
    initMetricGrids();
124
125
126
127
128
129
130
131
132
133
134
135
136
    init( dof );
}


GLViewer::~GLViewer()
{
    for( std::vector<SelectionTool*>::iterator tool=m_SelectionTools.begin(); tool!=m_SelectionTools.end(); ++tool )
        delete *tool;

	delete m_InfoBarManager;
}


137
138
139
140
141
142
143
144
145
146
void GLViewer::initMetricGrids()
{
    m_View.metricGrid2D.disableAxis( MetricGrid::ALL );
    m_View.metricGrid2D.disableGrid( MetricGrid::ALL );

    m_View.metricGrid3D.enableAxis( MetricGrid::ALL );
    m_View.metricGrid3D.enableGrid( MetricGrid::ZX );
}


147
148
void GLViewer::init( DisplayDoF dof )
{
149
150
151
    m_BelowCursor = NULL;


152
153
154
    m_MustUpdateFocal            = true;
    m_MustUpdateProjectionMatrix = true;
    m_MustUpdateViewMatrix       = true;
155

156
157
158
159
    m_SpeedFactor = 1.0;
    m_CtrlSpeedFactor = 4.0;
    m_ShiftSpeedFactor = 0.25;

160
    m_View.focusPoint = QVector3D(-1.0f,-1.0f,-1.0f);
161
    setFocusPoint( QVector3D(0.0f,0.0f,0.0f) );
162

163
    m_View.DoF = dof;
164
    QMatrix4x4 rot;
165
    if( dof == DISPLAY_DOF_2D )
166
        rot.setToIdentity();
167
168
    else
    {
169
170
        rot.rotate(  30.0f, 1,0,0 );
        rot.rotate( -30.0f, 0,1,0 );
171
    }
172
173
    setViewRotationMatrix( rot );

174
    m_View.fovY = 0.0f;
175
176
    setFovY( 65.0f );

177
178
179
180
181
    m_ChangeNearPlaneMode = false;
    m_ChangeFarPlaneMode  = false;

    m_View.nearPlaneFactor  = 0.01f;
    m_View.farPlaneFactor   = 5.0f;
182
	m_View.distToFocusPoint = 0.0f;
183
    setDistToFocusPoint( 400.0f );
184

185
186
    m_View.pointSize = 2;
	m_View.isCullingEnabled = false;
187

Frédéric Larue's avatar
Frédéric Larue committed
188
189
190
191
192
    if( !m_InfoBarManager )
    {
        m_InfoBarManager = new InfoBarManager( this );
        m_InfoBarManager->setInfoBar( new InfoBar(), InfoBar::BOTTOM );
    }
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210


    // Initialize selection tools.

    m_SelectionEnabled = false;

    if( m_SelectionTools.empty() )
    {
        m_SelectionTools.resize( SELECTION_TOOL_END );
        m_SelectionTools[SELECTION_TOOL_BOX  ] = new SelectionToolBox  ( *this, m_SelectionContext );
        m_SelectionTools[SELECTION_TOOL_DISK ] = new SelectionToolDisk ( *this, m_SelectionContext );
        m_SelectionTools[SELECTION_TOOL_LASSO] = new SelectionToolLasso( *this, m_SelectionContext );
    }

    m_SelectionCurrentToolName = SELECTION_TOOL_DISK;
    m_SelectionCurrentTool = m_SelectionTools[ m_SelectionCurrentToolName ];


211
    m_View.lightRotationMatrix.setToIdentity();
212

213
214
215
    m_View.isLightTrackingEnabled = true;
    m_View.isLightingEnabled      = true;
    m_View.isWireframeEnabled     = false;
216
217
218


    m_AnimationsRunningAtPreviousFrame = false;
219
	m_PerformanceCounterEnabled = false;
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241


    // Initialize the layout that will contains options for all active displayables.

    if( !m_DisplayOptionsLayout )
    {
        m_DisplayOptionsLayout = new QVBoxLayout();
        m_DisplayOptionsLayout->setAlignment( Qt::AlignTop );

        QWidget *w = new QWidget( this );
        w->setLayout( m_DisplayOptionsLayout );

        QGridLayout *viewerLayout = new QGridLayout();
        viewerLayout->setRowStretch( 1, 10 );
        viewerLayout->setColumnStretch( 0, 10 );
        viewerLayout->addWidget( w, 0,1 );

        this->setLayout( viewerLayout );
    }
}


242
243
244
245
246
247
248
249
250
251
252
253
void GLViewer::setRenderState( const RenderState& state )
{
    m_View = state;

    m_MustUpdateFocal            = true;
    m_MustUpdateProjectionMatrix = true;
    m_MustUpdateViewMatrix       = true;

    update();
}


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
void GLViewer::populateDisplayerFactories( DisplayableFactoryInterface *plugin )
{
    const unsigned int NB_ROWS = 3;

    QVector<QString> types;
    plugin->acceptedDataTypes( types );

    for( auto &type : types )
        if( m_Factories.find(type) == m_Factories.end()  &&  (plugin->viewerDoF() & dof()) )
        {
            m_Factories[type] = plugin;

            QStringList primNames;
            plugin->primitiveNames( primNames );
            foreach( QString name, primNames )
            {
                if( !m_PrimitiveCountMap.contains(name) )
                {
                    PrimitiveInfo pInfo;
                    pInfo.count = 0;
                    pInfo.row = m_PrimitiveCountMap.size() % (NB_ROWS-1);

                    if( !pInfo.row )
                    {
                        pInfo.panel = new Panel(NB_ROWS,2,15,2);
                        pInfo.panel->setColAlignment( 0, Panel::LEFT );
                        pInfo.panel->setColAlignment( 1, Panel::RIGHT );
                        pInfo.panel->hideFrame();
                        pInfo.panel->setColMinWidth( 1, 30 );

                        for( unsigned int i=1; i<NB_ROWS; ++i )
                            pInfo.panel->set( new Label(" "), i,0 );

                        m_InfoBarManager->infoBar( InfoBar::BOTTOM )->append( pInfo.panel );
                    }
                    else
                        pInfo.panel = m_InfoBarManager->infoBar( InfoBar::BOTTOM )->panels().back();

                    pInfo.panel->set( new Label(name+":",QVector4D(1.0f,1.0f,1.0f,1.0f)), pInfo.row, 0 );
                    pInfo.panel->set( new Label("0",QVector4D(1.0f,1.0f,1.0f,1.0f))     , pInfo.row, 1 );

                    m_PrimitiveCountMap[ name ] = pInfo;
                }
            }
        }
}


void GLViewer::populateDisplayerFactories( QList<DisplayableFactoryInterface*> &plugins )
{
    foreach( DisplayableFactoryInterface *plugin, plugins )
        populateDisplayerFactories( plugin );
}


void GLViewer::updatePrimitiveCounts()
{
#if 0
    // Reset all primitive counts to zero.

    for( QMap<QString,PrimitiveInfo>::iterator prim=m_PrimitiveCountMap.begin(); prim!=m_PrimitiveCountMap.end(); ++prim )
        prim->count = 0;


    // Checks every displayable and update primitive counts accordingly.

    for( DisplayableMap::iterator d=m_Displayables.begin(); d!=m_Displayables.end(); ++d )
    {
        // Recovers the factory of the current displayable.
        FactoryMap::iterator factory = m_Factories.find( d->first->TypeString() );
        if( factory == m_Factories.end() )
            continue;

        // Updates the primitive counts.
        QStringList primNames;
        factory->second->primitiveNames( primNames );
        foreach( QString name, primNames )
            m_PrimitiveCountMap[ name ].count += d->second.displayable->primitiveCount( name );
    }


    // Updates the display of primitive counts in the viewer UI.

    for( QMap<QString,PrimitiveInfo>::iterator prim=m_PrimitiveCountMap.begin(); prim!=m_PrimitiveCountMap.end(); ++prim )
    {
        QString countStr;
        if( prim->count )
        {
            countStr = "";
            for( unsigned int c=prim->count; c; c/=1000 )
                countStr.prepend( c<1000? QString().setNum(c) : QString().sprintf(" %03i",c%1000) );
        }
        else
            countStr = "0";

        prim->panel->set( new Label(countStr), prim->row,1 );
        m_InfoBarManager->repackInfoBars();
    }
#endif
}


bool GLViewer::addDisplayable( GenericUIData *m )
{
    // If a displayable already exists for this manageable, remove it before creating a new one.
    removeDisplayable( m );

    // Recovers the displayable factory for the corresponding datatype.
    FactoryMap::iterator factory = m_Factories.find( m->GetTypeString() );
    if( factory == m_Factories.end() )
        return false;

    // Asks the factory to create a displayable of the correct type. It is then
    // initialized and inserted in the list of all displayables.
    DisplayableInterface *displayable = factory->second->newDisplayer( m, this );
    DisplayableInfo *dispInfo = NULL;

    if( displayable )
    {
        makeCurrent();

        if( !m->GetDisplayOptions() )
        {
            UIParamSet *params = new UIParamSet( m->GetBaseName() + " display options:", NULL );
            displayable->declareParameters( *params );

            if( displayable->isAnimated() )
381
                params->Add( new UIParamAnimation() );
382
383
384
385
386

            params->updateChildrenLists( m );

            m->SetDisplayOptions( params );
        }
387

388
389
390
391
392
        connect( m->GetDisplayOptions(), SIGNAL(parameterUpdated(UIParam*)), this, SLOT(update()) );
        connect( m->GetDisplayOptions(), SIGNAL(parameterUpdated(UIParam*)), displayable, SLOT(updateParameter(UIParam*)) );

        if( displayable->isAnimated() )
        {
393
            UIParamAnimation *animCtrl = m->GetDisplayOptions()->GetAnimationCtrl();
394
395
396
397
398
399
400
401
402
403
404
            connect( animCtrl, SIGNAL(animationStartRequired()), displayable, SLOT(startAnimation()) );
            connect( animCtrl, SIGNAL(animationPauseRequired()), displayable, SLOT(pauseAnimation()) );
            connect( animCtrl, SIGNAL(animationStopRequired ()), displayable, SLOT(stopAnimation ()) );
            connect( animCtrl, SIGNAL(animationStepForwardRequired ()), displayable, SLOT(animationStepForward ()) );
            connect( animCtrl, SIGNAL(animationStepBackwardRequired()), displayable, SLOT(animationStepBackward()) );

            connect( displayable, SIGNAL(registerAnimation  (DisplayableInterface*)), this, SLOT(registerAnimation  (DisplayableInterface*)) );
            connect( displayable, SIGNAL(unregisterAnimation(DisplayableInterface*)), this, SLOT(unregisterAnimation(DisplayableInterface*)) );
            connect( displayable, SIGNAL(displayNeedUpdate()), this, SLOT(update()) );
        }

405
406
407
408
409
410
411
412
        DisplayableList &priorityList = m_DisplayablesByPriority[ factory->second->displayPriority() ];

        dispInfo = &m_Displayables[ m ];
        dispInfo->Initialize(
            displayable,
            priorityList.insert( priorityList.end(), dispInfo ),
            *m->GetDisplayOptions()
        );
413

414
        if( !m->GetDisplayOptions()->IsEmpty() )
415
416
417
418
419
        {
            m_DisplayOptionsLayout->addWidget( m->GetDisplayOptions() );
            m->GetDisplayOptions()->show();
        }

420
421
422
423
424
425
426
427
428
429
        if( isSelectionEnabled() )
        {
            for( auto mngr : dispInfo->selectionMgr )
                if( mngr->selectableEntity() == m_SelectionCurrentTool->entityToSelect() )
                {
                    dispInfo->currentSelectionMgr = mngr;
                    mngr->onRecompilingSelectionShader( m_SelectionCurrentTool );
                    break;
                }
        }
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447

        updatePrimitiveCounts();
        update();
    }


    if( dof() == DISPLAY_DOF_2D  &&  displayable )
    {
        m_AddingOrder.push_back( dispInfo );
        repackDisplayables();
        //frameAll();
    }


	return displayable != NULL;
}


448
449
450
451
452
453
//void GLViewer::setTransform( GenericUIData *m, const QMatrix4x4 &xf )
//{
//    DisplayableMap::iterator d = m_Displayables.find( m );
//    if( d != m_Displayables.end() )
//        d->second.packingTransform = xf;
//}
454
455


456
void GLViewer::updateDisplayable( GenericUIData *m, bool resetSelectionManagers )
457
458
459
460
461
462
463
464
465
466
467
468
{
    DisplayableMap::iterator d = m_Displayables.find( m );
    if( d != m_Displayables.end() )
    {
        // Recovers the info and the factory related to the given manageable.
        DisplayableFactoryInterface *factory = m_Factories[ m->GetTypeString() ];
        DisplayableInfo *dinfo = &d->second;

        // Re-initializes the displayable.
        dinfo->displayable->release( *m->GetDisplayOptions() );
        dinfo->displayable->initialize( *m->GetDisplayOptions() );

469
470
471
472
473
474
475
476
        // Update the displayable bounding box.
        dinfo->displayable->boundingBox( dinfo->boundingBox );

        // Update the displayable transform.
        QMatrix4x4 tr;
        dinfo->displayable->transformation( tr );
        dinfo->SetUserTransform( tr );

477
        // Re-generate the selection managers.
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
		if( resetSelectionManagers )
		{
			dinfo->currentSelectionMgr = NULL;
			for( auto mngr : dinfo->selectionMgr )
				delete mngr;
			dinfo->selectionMgr.clear();
			dinfo->displayable->selectionManagers( dinfo->selectionMgr );

			if( isSelectionEnabled() )
			{
				for( auto mngr : dinfo->selectionMgr )
					if( mngr->selectableEntity() == m_SelectionCurrentTool->entityToSelect() )
					{
						dinfo->currentSelectionMgr = mngr;
						mngr->onRecompilingSelectionShader( m_SelectionCurrentTool );
						break;
					}
			}
		}
497
498
499
500
501
502
503
504
505
506
507
508

        updatePrimitiveCounts();
        update();
    }
}


void GLViewer::frameBox( Box3f &box, const QMatrix4x4 *xf )
{
    if( !box.IsNull() )
    {
        double boxHalfDiag = box.Dimensions().length() * 0.5;
509
510
        double depth = ( 2.0*zFar()*zNear() - distToFocusPoint()*(zFar()+zNear()) ) / (zNear()-zFar());
        double projectedRadius = boxHalfDiag * focal() / depth;
511
512
513
514
515
516
517

        if( xf )
            setFocusPoint( xf->map(box.Center()) );
        else
            setFocusPoint( box.Center() );

        if( projectedRadius > 0.000001 )
518
            setDistToFocusPoint( distToFocusPoint() * (width()<height()? projectedRadius*height()/width() : projectedRadius) );
519
520
521
522
523
524
525
526
    }
}


void GLViewer::frameItem( GenericUIData* item )
{
    DisplayableMap::iterator dispInfo = m_Displayables.find( item );
    if( dispInfo != m_Displayables.end() )
527
        frameBox( dispInfo->second.boundingBox, &dispInfo->second.GetTransform() );
528
529
530
531
532
533
534
535
536
537
538
}


void GLViewer::frameItems( std::list<GenericUIData*> &items )
{
    Box3f box;

    for( auto m=items.begin(); m!=items.end(); ++m )
    {
        DisplayableMap::iterator dispInfo = m_Displayables.find( *m );
        if( dispInfo != m_Displayables.end() )
539
            if( !dispInfo->second.boundingBox.IsNull() )
540
541
            {
                Box3f::CornerSet objectBoxCorners;
542
                dispInfo->second.boundingBox.Corners( objectBoxCorners );
543
544

                for( auto c=objectBoxCorners.begin(); c!=objectBoxCorners.end(); ++c )
545
                    box.Add( dispInfo->second.GetTransform().map(*c) );
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
            }
    }

    frameBox( box );
}


void GLViewer::frameAll()
{
    if( !m_Displayables.empty() )
    {
        Box3f box;

        for( DisplayableMap::iterator dispInfo=m_Displayables.begin(); dispInfo!=m_Displayables.end(); ++dispInfo )
        {
            Box3f objectBox;
            dispInfo->second.displayable->boundingBox( objectBox );

            if( !objectBox.IsNull() )
            {
                Box3f::CornerSet objectBoxCorners;
                objectBox.Corners( objectBoxCorners );

                for( auto c=objectBoxCorners.begin(); c!=objectBoxCorners.end(); ++c )
570
                    box.Add( dispInfo->second.GetTransform().map(*c) );
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
            }
        }

        frameBox( box );
    }
}




// All displayables are arranged along a grid layout. All grid row have the same height (displayables are scaled so as to fit it)
// but each column has a different width, that corresponds to the width of its largest element. Displayables are horizontaly centered
// in their respective grid cells.
void GLViewer::repackDisplayables()
{
    if( m_AddingOrder.empty() )
        return;


    // Computes the number of columns of the grid.
    int nCols = (int) std::ceil( std::sqrt( (float)m_AddingOrder.size() ) );


    // Recovers the bounding boxes of all items.
    std::vector<Box3f> boxes( m_AddingOrder.size() );

    auto d = m_AddingOrder.begin();
    for( int i=0; i<boxes.size(); ++i, ++d )
        (*d)->displayable->boundingBox( boxes[i] );


    // Initializes the row height by looking at the bounding box height of the first displayable in the list.
    float rowHeight = boxes[0].Dimensions().y();
    float gridSpacing = 0.05f * rowHeight;


    // The width of each column is determined by looking for the largest rescaled width of all the elements it contains.
    std::vector<int> columnWidth( nCols );
    for( int c=0; c<nCols; ++c )
        columnWidth[c] = 0;

    for( int i=0; i<boxes.size(); ++i )
    {
        int c = i % nCols;
        float rescaledWidth = boxes[i].Dimensions().x() * rowHeight / boxes[i].Dimensions().y();
        if( rescaledWidth > columnWidth[c] )
            columnWidth[c] = rescaledWidth;
    }


    // The scaling factor to be applied to each displayable so as to match the grid row height is computed,
    // and the layout arrangement is finally performed by setting up the translation part of each displayable transform.
    float xRowBeginning = (boxes[0].Min().x() + 0.5f*boxes[0].Dimensions().x()) * rowHeight / boxes[0].Dimensions().y() - 0.5f*columnWidth[0];
    float x = xRowBeginning;
    float y = boxes[0].Min().y() * rowHeight / boxes[0].Dimensions().y();

    d = m_AddingOrder.begin();
    for( int i=0, c=0; i<boxes.size(); ++i, ++d )
    {
        float scalingFactor = rowHeight / boxes[i].Dimensions().y();
        float rescaledWidth = boxes[i].Dimensions().x() * scalingFactor;

633
634
635
636
637
638
639
        QMatrix4x4 packTr;
        packTr.setToIdentity();
        packTr(0,0) = scalingFactor;
        packTr(1,1) = scalingFactor;
        packTr(0,3) = x - boxes[i].Min().x()*scalingFactor + 0.5f*(columnWidth[c]-rescaledWidth);
        packTr(1,3) = y - boxes[i].Min().y()*scalingFactor;
        (*d)->SetPackingTransform( packTr );
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

        x += columnWidth[c] + gridSpacing;

        if( !(c = (c+1) % nCols) )
        {
            x = xRowBeginning;
            y -= rowHeight + gridSpacing;
        }
    }
}


GLViewer::DisplayableMap::iterator GLViewer::removeDisplayable_Internal( DisplayableMap::iterator &dmapIt )
{
    const GenericUIData *item  = dmapIt->first;
    DisplayableInfo     &dinfo = dmapIt->second;

    if( dinfo.displayable->isAnimated() )
    {
        auto foundAnim = m_ActiveAnimations.find( dinfo.displayable );
        if( foundAnim != m_ActiveAnimations.end() )
        {
            m_ActiveAnimations.erase( foundAnim );
            dinfo.displayable->onAnimationStop();
        }
    }

    disconnect( item->GetDisplayOptions(), SIGNAL(parameterUpdated(UIParam*)), this, SLOT(update()) );
    disconnect( item->GetDisplayOptions(), SIGNAL(parameterUpdated(UIParam*)), dinfo.displayable, SLOT(updateParameter(UIParam*)) );

670
    if( !item->GetDisplayOptions()->IsEmpty() )
671
672
673
674
675
    {
        item->GetDisplayOptions()->hide();
        m_DisplayOptionsLayout->removeWidget( item->GetDisplayOptions() );
    }

676
677
678
679
    for( auto mngr : dinfo.selectionMgr )
        delete mngr;
    dinfo.selectionMgr.clear();

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
    dinfo.displayable->release( *item->GetDisplayOptions() );
    delete dinfo.displayable;
    m_DisplayablesByPriority[ m_Factories[item->GetTypeString()]->displayPriority() ].erase( dinfo.posInPriorityList );

    return m_Displayables.erase( dmapIt );
}


void GLViewer::removeDisplayable( GenericUIData *m )
{
    DisplayableMap::iterator foundDisp = m_Displayables.find( m );
    if( foundDisp != m_Displayables.end() )
    {
        makeCurrent();

        if( dof() == DISPLAY_DOF_2D )
        {
            m_AddingOrder.remove( &foundDisp->second );
            removeDisplayable_Internal( foundDisp );
            repackDisplayables();
            frameAll();
        }
        else
            removeDisplayable_Internal( foundDisp );

        updatePrimitiveCounts();
        update();
    }
}


void GLViewer::removeAllDisplayables()
{
    makeCurrent();

	DisplayableMap::iterator disp = m_Displayables.begin();
    while( disp != m_Displayables.end() )
        disp = removeDisplayable_Internal( disp );

    m_AddingOrder.clear();

    updatePrimitiveCounts();
    update();
}


void GLViewer::initializeGL()
{
    makeCurrent();
    glewInit();

    setFocusPolicy( Qt::ClickFocus );

    resizeGL( width(), height() );

    update();
}


void GLViewer::mouseMotionNavigationEvent( float dx, float dy, QMouseEvent *evt )
{
    if( dof() == DISPLAY_DOF_2D )
    {
        if( evt->buttons() & Qt::MidButton )
	    {
            double proj[16];
            glGetDoublev( GL_PROJECTION_MATRIX, proj );
            double scaleFactor = 2.0*distToFocusPoint() / (width()*proj[0]);

		    double scaledDX = dx * scaleFactor;
		    double scaledDY = dy * scaleFactor;

            QVector3D fpoint = focusPoint();
            fpoint[0] += scaledDY*viewRotationMatrix()(1,0) - scaledDX*viewRotationMatrix()(0,0);
            fpoint[1] += scaledDY*viewRotationMatrix()(1,1) - scaledDX*viewRotationMatrix()(0,1);
            setFocusPoint( fpoint );

    	    update();
	    }
#if 0
        else if( evt->buttons() & Qt::LeftButton )
	    {
            const double orientation = (evt->x()-0.5*width())*dy - (evt->y()-0.5*height())*dx;

            Matrix4Dd deltaRot;
            if( orientation > 0.0 )
    		    deltaRot.SetRotation( Vector3Dd(0,0,1), -0.5*M_PI/180.0*std::sqrt(dx*dx+dy*dy) );
            else
    		    deltaRot.SetRotation( Vector3Dd(0,0,1),  0.5*M_PI/180.0*std::sqrt(dx*dx+dy*dy) );
            setViewRotationMatrix( viewRotationMatrix() * deltaRot );

            update();
	    }
#endif
    }
    else
    {
        if( evt->buttons() & Qt::LeftButton  &&  evt->buttons() & Qt::RightButton )
        {
            QVector3D axis( dy, dx, 0.0f );
            double axisLen = axis.length();

            QMatrix4x4 deltaRot;
            deltaRot.rotate( 0.5f*axisLen, axis/axisLen );

785
786
            if( m_View.isLightTrackingEnabled )
                m_View.lightRotationMatrix = deltaRot * m_View.lightRotationMatrix;
787
            else
788
                m_View.lightRotationMatrix = viewRotationMatrix() * deltaRot * viewRotationMatrix().inverted() * m_View.lightRotationMatrix;
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

            update();
        }
        else if( evt->buttons() & Qt::MidButton )
	    {
            double proj[16];
            glGetDoublev( GL_PROJECTION_MATRIX, proj );
            double scaleFactor = 2.0*distToFocusPoint() / (width()*proj[0]);

		    double scaledDX = dx * scaleFactor;
		    double scaledDY = dy * scaleFactor;

            QVector3D fpoint = focusPoint();
            fpoint[0] += scaledDY*viewRotationMatrix()(1,0) - scaledDX*viewRotationMatrix()(0,0);
            fpoint[1] += scaledDY*viewRotationMatrix()(1,1) - scaledDX*viewRotationMatrix()(0,1);
            fpoint[2] += scaledDY*viewRotationMatrix()(1,2) - scaledDX*viewRotationMatrix()(0,2);
            setFocusPoint( fpoint );

            emit screenSpaceTranslation( QVector2D(-scaledDX,scaledDY) );

    	    update();
	    }
	    else if( evt->buttons() & Qt::LeftButton )
	    {
            QMatrix4x4 deltaRot;

		    if( evt->pos().x() < 0.15f*width() )
                deltaRot.rotate(  0.5f*dy, 0,0,1 );
		    else if( evt->pos().x() > 0.85f*width() )
			    deltaRot.rotate( -0.5f*dy, 0,0,1 );
		    else
            {
                QVector3D axis( dy, dx, 0.0f );
                double axisLen = axis.length();
			    deltaRot.rotate(  0.5f*axisLen, axis/axisLen );
            }

            emit viewRotationMatrixUpdated( deltaRot );
            setViewRotationMatrix( deltaRot * viewRotationMatrix() );

            update();
	    }
    }
}


QMatrix4x4 GLViewer::viewportMatrix( bool flipY ) const
{
    const float xOff = 0.5f*width(), yOff = 0.5f*height();
    const float xAmp = xOff, yAmp = flipY? 1.0f - yOff : yOff;

    return QMatrix4x4( xAmp, 0.0f, 0.0f, xOff,
                       0.0f, yAmp, 0.0f, yOff,
                       0.0f, 0.0f, 1.0f, 0.0f,
                       0.0f, 0.0f, 0.0f, 1.0f );
}


QMatrix4x4 GLViewer::modelMatrix( const DisplayableInterface *d ) const
{
    auto dispInfo = m_Displayables.find(d->getSource());
850
851
    assert( dispInfo != m_Displayables.end() );
    return dispInfo->second.GetTransform();
852
853
854
855
856
857
858
859
860
861
862
863
864
865
}


void GLViewer::manageAnimations()
{
    // Check if animated objects waiting to be started are pending.

    while( !m_AnimationStartingQueue.isEmpty() )
    {
        auto anim = m_AnimationStartingQueue.front();
        m_AnimationStartingQueue.pop_front();

        if( !m_ActiveAnimations.contains(anim) )
        {
866
            m_ActiveAnimations[anim] = 0.0;
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
            anim->onAnimationStart();
        }
    }


    // Check if animated objects waiting to be stopped are pending.

    while( !m_AnimationStoppingQueue.isEmpty() )
    {
        auto anim = m_AnimationStoppingQueue.front();
        m_AnimationStoppingQueue.pop_front();

        auto foundAnim = m_ActiveAnimations.find( anim );
        if( foundAnim != m_ActiveAnimations.end() )
        {
            m_ActiveAnimations.erase( foundAnim );
            anim->onAnimationStop();
        }
    }


    // Check if at least one of the current animations is not paused.

    bool animationsRunning = false;

    for( auto anim=m_ActiveAnimations.begin(); anim!=m_ActiveAnimations.end(); ++anim )
        if( !anim.key()->isAnimationPaused() )
        {
            animationsRunning = true;
            break;
        }


900
901
    // Accurate measurement of the time elapsed since the last animation step.

Frédéric Larue's avatar
Frédéric Larue committed
902
903
904
    TimeMeasurement now = std::chrono::high_resolution_clock::now();
    double dt = 0.000001 * std::chrono::duration_cast< std::chrono::microseconds >( now - m_AnimationFrameTime ).count();
    m_AnimationFrameTime = now;
905
	m_AnimationFrameRate = float( 1.0 / dt );
906

907
908

    // Make all active animated objects to execute a new animation step.
Frédéric Larue's avatar
Frédéric Larue committed
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
    if( animationsRunning )
    {
        if( m_AnimationsRunningAtPreviousFrame )
            for( auto anim=m_ActiveAnimations.begin(); anim!=m_ActiveAnimations.end(); ++anim )
                if( !anim.key()->isAnimationPaused() )
                {
                    if( anim.key()->animationTimeStepValue() != 0.0f )
                    {
                        anim.value() += dt;
                        if( anim.value() >= anim.key()->animationTimeStepValue() )
                        {
                            anim.key()->onAnimationStep( anim.value() );
                            anim.value() -= anim.key()->animationTimeStepValue();
                        }
                    }
                    else
                        anim.key()->onAnimationStep( dt );
                }

        update();
    }


    m_AnimationsRunningAtPreviousFrame = animationsRunning;
}


void GLViewer::paintGL()
{
    manageAnimations();


    // Setting up the OpenGL viewport.
943

944
945
946
947
	glViewport( 0, 0, width(), height() );


    // Clear the frame buffer.
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
    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();

    glMatrixMode( GL_MODELVIEW );
    glLoadIdentity();

    glDisable( GL_LIGHTING );
    glDisable( GL_DEPTH_TEST );
    glDepthMask( GL_FALSE );

    glBegin( GL_QUADS );
        //glColor3ub( 144, 144, 144 );
        glColor3ub( 132, 132, 132 );
        glVertex2i( -1, -1 );
        glVertex2i(  1, -1 );
        glColor3ub( 208, 208, 208 );
        glVertex2i(  1,  1 );
        glVertex2i( -1,  1 );
    glEnd();

    glDepthMask( GL_TRUE );

	glClear( GL_DEPTH_BUFFER_BIT );


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
    // Update the projection and view matrices, if needed.

    if( m_MustUpdateFocal )
    {
        m_Focal = 1.0 / std::tan( fovY()*M_PI/360.0 );

        m_MustUpdateFocal = false;
        m_MustUpdateProjectionMatrix = true;
    }

    bool mustUpdateViewProjectionMatrix = false;

    if( m_MustUpdateProjectionMatrix )
    {
        m_ProjectionMatrix.fill( 0.0f );
        m_ProjectionMatrix(0,0) = focal() * height() / width();
        m_ProjectionMatrix(1,1) = focal();
        m_ProjectionMatrix(2,2) = (zNear() + zFar())  / (zNear() - zFar());
        m_ProjectionMatrix(2,3) = 2.0f*zNear()*zFar() / (zNear() - zFar());
        m_ProjectionMatrix(3,2) = -1.0f;

        m_ProjectionMatrixInverse = m_ProjectionMatrix.inverted();

        m_MustUpdateProjectionMatrix = false;
        mustUpdateViewProjectionMatrix = true;
    }

    if( m_MustUpdateViewMatrix )
    {
        m_ViewMatrix.setToIdentity();
        m_ViewMatrix.translate( 0.0, 0.0, -distToFocusPoint() );
        m_ViewMatrix *= viewRotationMatrix();
        m_ViewMatrix.translate( -focusPoint() );

        m_ViewMatrixInverse = m_ViewMatrix.inverted();

1010
1011
        m_ViewRotationMatrixInverse = viewRotationMatrix().inverted();

1012
1013
1014
1015
1016
1017
1018
1019
        m_MustUpdateViewMatrix = false;
        mustUpdateViewProjectionMatrix = true;
    }

    if( mustUpdateViewProjectionMatrix )
    {
        m_ViewProjectionMatrix = m_ProjectionMatrix * m_ViewMatrix;
        m_ViewProjectionMatrixInverse = m_ViewMatrixInverse * m_ProjectionMatrixInverse;
1020
1021

        m_PixelToRayMatrix = viewRotationMatrixInverse() * projectionMatrixInverse();
1022
1023

        m_Frustum.UpdateFrustumPlanes( m_ViewMatrix, m_ProjectionMatrix );
1024
1025
1026
1027
1028
    }

    // Setup the OpenGL transforms and viewport.

    glMatrixMode( GL_PROJECTION );
1029
1030
1031
1032
1033
    glLoadMatrixf( projectionMatrix().data() );

    glMatrixMode( GL_MODELVIEW );
    glLoadMatrixf( viewMatrix().data() );

1034
    glPointSize( (GLfloat) m_View.pointSize );
1035
1036
1037
1038
1039
1040
1041
1042
    glColor3ub( 255, 255, 255 );

    setupScene();


    // Display the scene content by increasing priority.
    for( PriorityMap::iterator dlist=m_DisplayablesByPriority.begin(); dlist!=m_DisplayablesByPriority.end(); ++dlist )
        for( DisplayableList::iterator dinfo=dlist->second.begin(); dinfo!=dlist->second.end(); ++dinfo )
1043
1044
1045
1046
1047
1048
1049
            if( !m_Frustum.IsOutside( (*dinfo)->boundingBox, (*dinfo)->GetTransform() ) )
            {
                glPushMatrix();
                glMultMatrixf( (*dinfo)->GetTransform().data() );
                glPushAttrib( GL_ALL_ATTRIB_BITS );
                (*dinfo)->displayable->onDisplay( *(*dinfo)->displayable->getSource()->GetDisplayOptions() );
                displayLabel( (*dinfo)->displayable );
1050
1051
                if( (*dinfo)->currentSelectionMgr )
                    (*dinfo)->currentSelectionMgr->onDisplay( this, (*dinfo)->GetTransform() );
1052
1053
1054
1055
                glPopAttrib();
                glPopMatrix();
            }

1056
1057
1058
1059
1060

    // Finalize the rendering.
    releaseScene();

    // Display the metric grid.
1061
1062
1063
1064
1065
1066
1067
1068
    glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
    glDepthMask( GL_FALSE );
    glEnable( GL_DEPTH_TEST );
    if( dof() == DISPLAY_DOF_2D )
        m_View.metricGrid2D.display( this );
    else
        m_View.metricGrid3D.display( this );
    glDepthMask( GL_TRUE );
1069

1070
1071
1072
    // Display the label of the object under the mouse cursor.
    if( dof() == DISPLAY_DOF_3D  &&  m_BelowCursor )
    {
1073
        double textX, textY;
1074
1075
1076
1077
1078
        //QVector3D c = m_BelowCursor->GetTransform().map( m_BelowCursor->boundingBox.Center() );
        //renderCoords( c.x(), c.y(), c.z(), &textX, &textY );
        QPoint c = mapFromGlobal( cursor().pos() );
        textX = c.x();
        textY = c.y();
1079
1080

        QString label = m_BelowCursor->displayable->label();
1081
        QFont f( font().family(), 10, QFont::Bold );
1082

1083
        Qt::Alignment align = static_cast<Qt::Alignment>( Qt::AlignHCenter | Qt::AlignBottom );
1084
1085

        glColor3ub( 220, 220, 220 );
1086
1087
1088
1089
        renderText( textX-1, textY-1, label, f, align );
        renderText( textX-1, textY+1, label, f, align );
        renderText( textX+1, textY-1, label, f, align );
        renderText( textX+1, textY+1, label, f, align );
1090
        glColor3ub( 64, 64, 64 );
1091
        renderText( textX, textY, label, f, align );
1092
    }
1093
1094
1095
1096
1097
1098
1099
1100
1101

    // Display the selection tool, if selection mode is enabled.
    if( isSelectionEnabled() )
    {
        m_SelectionCurrentTool->displaySelectionState();
        m_SelectionCurrentTool->display();
    }


1102
1103
1104
1105
1106
1107
1108
1109
1110
	if( m_PerformanceCounterEnabled )
	{
		QString label = QString::number( m_AnimationFrameRate, 'f', 2 ) + " FPS";
		glColor3ub( 0, 0, 0 );
		renderText( 10, 10, label, QFont( font().family(), 20, QFont::Bold ), static_cast<Qt::Alignment>( Qt::AlignLeft | Qt::AlignTop ) );
		update();
	}


1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
    // Display the information bar.
    m_InfoBarManager->display();
}


void GLViewer::setupScene()
{
    // Setup the OpenGL states.

    if( dof() == DISPLAY_DOF_2D )
    {
        glDisable( GL_DEPTH_TEST );
        glEnable( GL_MULTISAMPLE );
        glDisable( GL_LIGHTING );
    }
    else
    {
        // Place the light into the scene.
        glMatrixMode( GL_MODELVIEW );
        glPushMatrix();

1132
        if( m_View.isLightTrackingEnabled )
1133
            glLoadIdentity();
1134
        glMultMatrixf( m_View.lightRotationMatrix.data() );
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145

        GLfloat lightPos[4] = { 0.0f, 0.0f, 1.0f, 0.0f };
        glLightfv( GL_LIGHT0, GL_POSITION, lightPos );

        glPopMatrix();


        // Setup the OpenGL states.
	    glEnable( GL_DEPTH_TEST );
        glEnable( GL_MULTISAMPLE );

1146
        if( m_View.isLightingEnabled )
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
        {
            glEnable( GL_LIGHTING );
            glEnable( GL_LIGHT0 );
            glEnable( GL_COLOR_MATERIAL );
        }
        else
        {
            glDisable( GL_LIGHTING );
            glDisable( GL_LIGHT0 );
            glDisable( GL_COLOR_MATERIAL );
        }

1159
        glPolygonMode( GL_FRONT_AND_BACK, m_View.isWireframeEnabled && !m_SelectionEnabled? GL_LINE : GL_FILL );
1160

1161
        if( m_View.isCullingEnabled )
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
        {
            glEnable( GL_CULL_FACE );
            glCullFace( GL_BACK );
        }
        else
            glDisable( GL_CULL_FACE );
    }
}


void GLViewer::displayLabel( DisplayableInterface *d )
{
    if( dof() == DISPLAY_DOF_2D )
    {
        Box3f box;
        d->boundingBox( box );


        // Display the black border.

        glColor3ub( 0, 0, 0 );

        glBegin( GL_LINE_LOOP );
            glVertex2f( box.Min().x(), box.Min().y() );
            glVertex2f( box.Min().x(), box.Max().y() );
            glVertex2f( box.Max().x(), box.Max().y() );
            glVertex2f( box.Max().x(), box.Min().y() );
        glEnd();


        // Display the name of the image on overlay in the bottom-left corner, by constraining it to the displayed image rectangle.

1194
        QMatrix4x4 toViewportCoord = viewportMatrix(true) * MVPMatrix(d);
1195
1196
1197
        QVector3D bottomLeft = toViewportCoord.map( QVector3D( box.Min().x(), box.Min().y(), 0.0f ) );
        QVector3D topRight   = toViewportCoord.map( QVector3D( box.Max().x(), box.Max().y(), 0.0f ) );

1198
1199
        QFont f( font().family(), 10, QFont::Bold );
        QFontMetrics fm( f );
1200
1201
1202
1203
1204
1205

        QString imgName;
        int imgNameWidth;

        if( fm.height() < bottomLeft.y()-topRight.y()-4 )
        {
1206
            imgName = d->label();
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
            imgNameWidth = fm.width( imgName );

            if( imgNameWidth > topRight.x()-bottomLeft.x()-8 )
            {
                int imgNameLength = imgName.length();
                do
                {
                    -- imgNameLength;
                    imgNameWidth -= fm.width( imgName.at(imgNameLength) );
                } while( imgNameWidth > topRight.x()-bottomLeft.x()-8 );
                imgName = imgName.left( imgNameLength );
            }
        }

        if( imgName.length() > 0 )
        {
            int textX = bottomLeft.x() + 4;
1224
            int textY = bottomLeft.y() - 2;
1225
1226

            glColor3ub( 220, 220, 220 );
1227
1228
1229
1230
            renderText( textX-1, textY-1, imgName, f, Qt::AlignBottom );
            renderText( textX-1, textY+1, imgName, f, Qt::AlignBottom );
            renderText( textX+1, textY-1, imgName, f, Qt::AlignBottom );
            renderText( textX+1, textY+1, imgName, f, Qt::AlignBottom );
1231
            glColor3ub( 64, 64, 64 );
1232
            renderText( textX, textY, imgName, f, Qt::AlignBottom );
1233
1234
1235
1236
1237
1238
1239
        }
    }
}


void GLViewer::resizeGL( int width, int height )
{
1240
1241
    m_MustUpdateProjectionMatrix = true;

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
	glViewport( 0, 0, width, height );

    m_InfoBarManager->onReshape();

    for( DisplayableMap::iterator d=m_Displayables.begin(); d!=m_Displayables.end(); ++d )
        d->second.displayable->onReshape( *d->first->GetDisplayOptions() );

    if( isSelectionEnabled() )
        m_SelectionCurrentTool->onResize();

    updateSelectionZBuffer();
}


void GLViewer::updateSelection( SelectionTool &tool )
{
    makeCurrent();

    // Initializes the GL transformation so as to match the current view.

	glMatrixMode( GL_PROJECTION );
    glLoadMatrixf( projectionMatrix().data() );

    glMatrixMode( GL_MODELVIEW );
    glLoadMatrixf( viewMatrix().data() );


    // Initializes the selection context.

1271
    tool.setDepthBuffer( m_SelectionDepthTexture );
1272
    tool.selectBackFacingGeometry( m_View.isCullingEnabled? GL_FALSE : GL_TRUE );
1273
1274
1275
1276
1277
1278
    tool.preSelectionUpdate();


    // Checks every item that can be selected.

    for( DisplayableMap::iterator d=m_Displayables.begin(); d!=m_Displayables.end(); ++d )
1279
        if( d->second.currentSelectionMgr )
1280
1281
        {
            glPushMatrix();
1282
            glMultMatrixf( d->second.GetTransform().data() );
1283
            d->second.currentSelectionMgr->onUpdatingSelection( &tool );
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
            glPopMatrix();
        }


    tool.postSelectionUpdate();
}


void GLViewer::updateSelectionMode( const Qt::KeyboardModifiers &modifiers )
{
    if( isSelectionEnabled() )
    {
        SelectionTool::SelectionMode newMode;

        if( modifiers & Qt::ShiftModifier )
            newMode = SelectionTool::SELECTION_MODE_SET;
        else if( modifiers & Qt::ControlModifier )
            newMode = SelectionTool::SELECTION_MODE_REMOVE;
        else
            newMode = SelectionTool::SELECTION_MODE_ADD;

        if( m_SelectionCurrentTool->selectionMode() != newMode )
        {
            m_SelectionCurrentTool->setSelectionMode( newMode );
            update();
        }
    }
}


void GLViewer::updateSelectionZBuffer()
{
    if( !isSelectionEnabled() )
        return;

    makeCurrent();


    // Creates the shader that makes it possible to recover the scene Z-buffer.

    if( !m_ZBufferShader.IsCreated() )
    {
        std::string logs;
        if( !GPU::CreateShaderFromSources( m_ZBufferShader, s_ZBufferVPG, s_ZBufferFPG, &logs ) )
        {
            std::cout << "Z-buffer shader compilation error:" << std::endl << logs << std::endl;
            return;
        }
    }


    // Recovers the depth buffer matching the current view for depth test during selection.

1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
    if( !m_SelectionDepthTexture.IsInstantiated() )
    {
        m_SelectionDepthTexture.Create( GL_DEPTH_COMPONENT, width(), height(), GL_DEPTH_COMPONENT, GL_INT, NULL );
        m_SelectionDepthTexture.SetFiltering( GL_LINEAR );
        m_SelectionDepthTexture.SetBaseAndMaxLevels( 0 );
        m_SelectionDepthTexture.SetCompareMode( GL_COMPARE_R_TO_TEXTURE );
        m_SelectionDepthTexture.SetCompareFunc( GL_LEQUAL );
        m_SelectionDepthTexture.SetDepthTextureMode( GL_INTENSITY );

        m_SelectionDepthBuffer.Create( width(), height() );
        m_SelectionDepthBuffer.Attach( GL_DEPTH_ATTACHMENT, m_SelectionDepthTexture );
    }
1349

1350
    m_SelectionDepthBuffer.Bind();
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362

    glClear( GL_DEPTH_BUFFER_BIT );


    // Setting up the OpenGL transforms and viewport.

	glMatrixMode( GL_PROJECTION );
    glLoadMatrixf( projectionMatrix().data() );

    glMatrixMode( GL_MODELVIEW );
    glLoadMatrixf( viewMatrix().data() );

1363
    glPointSize( (GLfloat) m_View.pointSize );
1364
1365
1366
1367
1368
1369
1370
1371

    setupScene();


    // Display the scene content by increasing priority.

    for( PriorityMap::iterator dlist=m_DisplayablesByPriority.begin(); dlist!=m_DisplayablesByPriority.end(); ++dlist )
        for( DisplayableList::iterator dinfo=dlist->second.begin(); dinfo!=dlist->second.end(); ++dinfo )
1372
1373
1374
1375
1376
1377
1378
            if( !m_Frustum.IsOutside( (*dinfo)->boundingBox, (*dinfo)->GetTransform() ) )
            {
                m_ZBufferShader.SetUniform( "fullTransformMatrix", (viewProjectionMatrix() * (*dinfo)->GetTransform()).data() );
                glPushAttrib( GL_ALL_ATTRIB_BITS );
                (*dinfo)->displayable->onPicking( *(*dinfo)->displayable->getSource()->GetDisplayOptions(), m_ZBufferShader, "vertexPosition" );
                glPopAttrib();
            }
1379
1380
1381
1382
1383
1384


    // Finalize the rendering.

    releaseScene();

1385
    m_SelectionDepthBuffer.Unbind();
1386
1387
1388
1389
1390
}


void GLViewer::processSelection( BaseSelectionProcessor &proc )
{
1391
1392
    QList<BaseSelectionProcessor*> procList;
    procList << &proc;
1393
1394
1395
1396
    processSelection( procList );
}


1397
void GLViewer::processSelection( QList<BaseSelectionProcessor*> &procList )
1398
{
1399
    QMap< QString, BaseSelectionProcessor* > processorByType;
1400

1401
    for( BaseSelectionProcessor* p : procList )
1402
    {
1403
1404
        QStringList acceptedTypes;
        p->acceptedDataType( acceptedTypes );
1405

1406
1407
        for( QString& type : acceptedTypes )
            processorByType[type] = p;
1408
1409
    }

1410
    for( auto& d : m_Displayables )
1411
    {
1412
1413
1414
        QMap< QString, BaseSelectionProcessor* >::iterator processorFound = processorByType.find( d.first->GetTypeString() );
        if( processorFound != processorByType.end() )
            processSelection( d.second, *processorFound.value() );
1415
1416
1417
1418
1419
1420
1421
    }
}


void GLViewer::processSelection( GenericUIData *m, BaseSelectionProcessor &proc )
{
    DisplayableMap::iterator displayableFound = m_Displayables.find( m );
1422
1423
1424
    if( displayableFound != m_Displayables.end() )
        processSelection( displayableFound->second, proc );
}
1425
1426


1427
1428
1429
1430
1431
1432
void GLViewer::processSelection( DisplayableInterface *d, BaseSelectionProcessor &proc )
{
    processSelection( d->getSource(), proc );
}


1433
1434
1435
1436
void GLViewer::processSelection( DisplayableInfo &dInfo, BaseSelectionProcessor &proc )
{
    DisplayableInterface *d   = dInfo.displayable;
    GenericUIData        *m   = d->getSource();
1437
    SelectionManager     *mgr = dInfo.currentSelectionMgr;
1438

1439
    if( !mgr  ||  mgr->selectableEntity() != proc.entityToProcess() )
1440
        return;
1441

1442
    QStringList acceptedTypes;
1443
1444
    proc.acceptedDataType( acceptedTypes );

1445
1446
1447
1448
1449
    if( acceptedTypes.contains(m->GetTypeString()) )
    {
        proc.init( m );
        d->processSelection( mgr, proc );
        proc.release( m );
1450

1451
1452
        if( proc.isDisplayableUpdateRequired() )
        {
1453
            updateDisplayable( m, proc.isSelectionResetRequired() );
1454
            updateSelectionZBuffer();
1455
        }
1456
1457
		else if( proc.isSelectionResetRequired() )
			mgr->clearSelection();
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
void GLViewer::renderCoords( double x, double y, double z, double *screenX, double *screenY )
{
    // Identify x and y locations to render text within widget

    QMatrix4x4 model, proj;
    GLint viewport[4];
    glGetFloatv( GL_MODELVIEW_MATRIX, model.data() );
    glGetFloatv( GL_PROJECTION_MATRIX, proj.data() );
    glGetIntegerv( GL_VIEWPORT, viewport );

    *screenX = *screenY = 0.0;
    QVector4D out = proj.map( model.map( QVector4D(x,y,z,1.0f) ) );

    if( out.w() != 0.0f )
    {
        float wInv = 1.0f / out.w();
        out.setX( out.x() * wInv );
        out.setY( out.y() * wInv );

        *screenX = viewport[0] + (1 + out.x()) * 0.5 * viewport[2];
        *screenY = viewport[1] + (1 + out.y()) * 0.5 * viewport[3];
    }

    *screenY = this->height() - *screenY; // y is inverted
}


1489
void GLViewer::renderText( double x, double y, const QString &text, const QFont &font, Qt::Alignment align )
1490
{
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
    QFontMetrics fm( font );

    // Extract lines from the input strings.

    QStringList textLines;

    int beg = 0, end;
    while( (end = text.indexOf('\n',beg)) >= 0 )
    {
        textLines.push_back( text.mid(beg,end-beg) );
        beg = end + 1;
    }

    textLines.push_back( (beg==0)? text : text.mid(beg) );

1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
    // Save OpenGL states.

    GLint buffer;
    GLboolean depthTest;
	GLboolean blend;
	GLint blendSrcRGB, blendSrcAlpha;
	GLint blendDstRGB, blendDstAlpha;

    glGetIntegerv( GL_FRAMEBUFFER_BINDING, &buffer );
	glGetBooleanv( GL_DEPTH_TEST, &depthTest );
	glGetBooleanv( GL_BLEND, &blend );
	glGetIntegerv( GL_BLEND_SRC_RGB  , &blendSrcRGB   );
	glGetIntegerv( GL_BLEND_SRC_ALPHA, &blendSrcAlpha );
	glGetIntegerv( GL_BLEND_DST_RGB  , &blendDstRGB   );
	glGetIntegerv( GL_BLEND_DST_ALPHA, &blendDstAlpha );

    // Retrieve last OpenGL color to use as a font color.

    GLfloat glColor[4];
    glGetFloatv( GL_CURRENT_COLOR, glColor );
    QColor fontColor = QColor( 255.0f*glColor[0], 255.0f*glColor[1], 255.0f*glColor[2], 255.0f*glColor[3] );

	// Paint text.

1530
1531
1532
1533
1534
1535
    if( align & Qt::AlignBottom )
        y -= (textLines.size()-1) * fm.lineSpacing() + fm.descent();
    else if( align & Qt::AlignVCenter )
        y -= ((textLines.size()) * fm.lineSpacing())/2 - fm.ascent();
	else if( align & Qt::AlignTop )
		y += fm.ascent();
1536

1537
1538
1539
1540
    QPainter painter;
    painter.begin( this );
	    painter.setPen( fontColor );
	    painter.setFont( font );
1541
1542
1543
1544
1545
1546
1547
1548
        for( auto &l : textLines )
        {
            if( align & Qt::AlignRight )
        		painter.drawText( x - fm.width(l), y, l );
            else if( align & Qt::AlignHCenter )
        		painter.drawText( x - fm.width(l)/2, y, l );
            else
        		painter.drawText( x, y, l );
1549
            y += fm.lineSpacing();
1550
        }
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
    painter.end();

	// Restore OpenGL states.

    glBindFramebufferEXT( GL_FRAMEBUFFER_EXT, buffer );
    depthTest?  glEnable( GL_DEPTH_TEST )  :  glDisable( GL_DEPTH_TEST );
    blend?  glEnable( GL_BLEND )  :  glDisable( GL_BLEND );
	glBlendFuncSeparateEXT( blendSrcRGB, blendDstRGB, blendSrcAlpha, blendDstAlpha );
    glColor4fv( glColor );
}


1563
void GLViewer::renderText( double x, double y, double z, const QString &text, const QFont &font, Qt::Alignment align )
1564
{
1565
1566
    double screenX, screenY;
    renderCoords( x, y, z, &screenX, &screenY );
1567
    renderText( screenX, screenY, text, font, align );
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
}


bool GLViewer::imageOfCurrentDisplay( const GenericUIData *m, QImage &renderResult )
{
    // Check if the provided item is currently displayed.

    DisplayableInterface *d = getDisplayable( m );

    if( !d )
        return false;


    // Recover its dimensions so as to determine the size of the rendering output buffer.

    Box3f dBox;
    d->boundingBox( dBox );

    int w = (int) dBox.Dimensions().x();
    int h = (int) dBox.Dimensions().y();


    // Perform off-screen rendering.

    makeCurrent();

    GPU::FrameBuffer fb( w, h );
    fb.Attach( GL_COLOR_ATTACHMENT0, GL_RGBA );
    fb.Bind();


    glMatrixMode( GL_PROJECTION );
    glPushMatrix();
    glLoadIdentity();
    glOrtho( dBox.Min().x(), dBox.Max().x(), dBox.Max().y(), dBox.Min().y(), -1.0f, 1.0f );
1603
1604
1605
1606
1607
    glMultMatrixf( m_ViewMatrixInverse.data() );
    glMultMatrixf( modelMatrixInverse(d).data() );

    QMatrix4x4 projBackup = m_ProjectionMatrix;
    glGetFloatv( GL_PROJECTION_MATRIX, m_ProjectionMatrix.data() );
1608
1609
1610

    glMatrixMode( GL_MODELVIEW );
    glPushMatrix();
1611
1612
    glLoadMatrixf( m_ViewMatrix.data() );
    glMultMatrixf( modelMatrix(d).data() );
1613
1614
1615

    d->onDisplay( *m->GetDisplayOptions() );

1616
    glMatrixMode( GL_MODELVIEW );
1617
1618
1619
1620
    glPopMatrix();
    glMatrixMode( GL_PROJECTION );
    glPopMatrix();

1621
1622
    m_ProjectionMatrix = projBackup;

1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
    fb.Unbind();


    // Recover the render result and store it to the provided image object.

    GLubyte *fbData = new GLubyte [ 4*w*h ];
    fb.DumpTo( GL_COLOR_ATTACHMENT0, fbData, GL_RGBA, GL_UNSIGNED_BYTE );

    renderResult = QImage( w, h, QImage::Format_RGBA8888 );
    for( int y=0, n=0; y<h; ++y )
    {
        unsigned char *lineData = renderResult.scanLine( y );
        for( int x=0; x<4*w; ++x, ++n )
            lineData[x] = fbData[n];
    }

1639
    delete[] fbData;
1640
1641
1642
1643
1644
1645


    return true;
}


1646
1647
1648
1649
1650
1651
1652
void GLViewer::enterEvent( QEvent* evt )
{
    setFocus();
    QOpenGLWidget::enterEvent( evt );
}


1653
1654
1655
1656
1657
1658
void GLViewer::mousePressEvent( QMouseEvent *evt )
{
    if( dof() == DISPLAY_DOF_2D )
    {
        PickedPoint p;

1659
        if( !isSelectionEnabled()  &&  evt->button() == Qt::RightButton  &&  getPickedPoint( evt->pos().x(), height()-evt->pos().y(), p, true ) )
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
        {
            QMenu ctxMenu;
            ctxMenu.addAction( "Save current render" );

            if( ctxMenu.exec( evt->globalPos() ) )
            {
		        QStringList filters;
			    QString allImages;
                foreach( QByteArray ext, QImageWriter::supportedImageFormats() )
			    {
		            filters << QString(ext).toUpper() + " image files (*." + ext + ")";
				    allImages += " *." + ext;
			    }
			    filters.push_front( "All image files (" + allImages + " )" );

		        QFileDialog dlg( this, "Save image" );
		        dlg.setAcceptMode( QFileDialog::AcceptSave );
                dlg.setFileMode( QFileDialog::AnyFile );
                dlg.setNameFilters( filters );

			    if( dlg.exec() )
			    {
				    QImage img;
				    imageOfCurrentDisplay( p.srcObject, img );
				    img.save( dlg.selectedFiles().front() );
			    }
            }
        }
    }


    if( isSelectionEnabled() )
    {
        if( evt->button() == Qt::RightButton )
            toggleSelection();
        else
        {
            makeCurrent();
1698
1699
            if( m_SelectionZBufferUpdateMode & SelectionZBufferUpdateMode::ON_MOUSE_PRESSED )
                updateSelectionZBuffer();
1700
1701
1702
1703
            m_SelectionCurrentTool->mousePressEvent( evt );
        }
    }

1704
    m_ClickMousePos = m_PrevMousePos = evt->pos();
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714

    update();
}


void GLViewer::mouseReleaseEvent( QMouseEvent *evt )
{
    if( isSelectionEnabled() )
    {
        makeCurrent();
1715
1716
        if( m_SelectionZBufferUpdateMode & SelectionZBufferUpdateMode::ON_MOUSE_RELEASED )
            updateSelectionZBuffer();
1717
1718
1719
        m_SelectionCurrentTool->mouseReleaseEvent( evt );
        updateSelectionMode( evt->modifiers() );
    }
1720
1721
1722
1723
    else if( evt->button() == Qt::RightButton  &&  evt->pos() == m_ClickMousePos  &&  m_BelowCursor )
    {
        emit dataSelected( m_BelowCursor->displayable->getSource(), evt->modifiers() );
    }
1724
1725
1726
1727
1728

    update();
}


1729
1730
1731
1732
1733
1734
void GLViewer::findObjectUnderCursor( const QPoint& cursor )
{
    PickedPoint pp;
    if( getPickedPoint( cursor.x(), height()-cursor.y(), pp, true ) )
    {
        auto disp = &m_Displayables[ pp.srcObject ];
1735
        //if( disp != m_BelowCursor )
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
        {
            m_BelowCursor = disp;
            update();
        }
    }
    else if( m_BelowCursor )
    {
        m_BelowCursor = NULL;
        update();
    }
}


void GLViewer::clearObjectUnderCursor()
{
    if( m_BelowCursor )
    {
        m_BelowCursor = NULL;
        update();
    }
}


1759
1760
void GLViewer::mouseMoveEvent( QMouseEvent *evt )
{
1761
1762
1763
    if( isSelectionEnabled() )
    {
        makeCurrent();
1764
1765
        if( evt->buttons() != Qt::MouseButton::NoButton  &&  (m_SelectionZBufferUpdateMode & SelectionZBufferUpdateMode::ON_MOUSE_MOVED) )
            updateSelectionZBuffer();
1766
1767
1768
1769
        m_SelectionCurrentTool->mouseMoveEvent( evt );
        update();
    }
    else if( evt->buttons() != Qt::NoButton )
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
    {
	    double dx = (evt->pos().x() - m_PrevMousePos.x());
	    double dy = (evt->pos().y() - m_PrevMousePos.y());
	    m_PrevMousePos = evt->pos();

        if( evt->modifiers() & Qt::ShiftModifier )
        {
            dx *= m_ShiftSpeedFactor;
            dy *= m_ShiftSpeedFactor;
        }
        else if( evt->modifiers() & Qt::ControlModifier )
        {
            dx *= m_CtrlSpeedFactor;
            dy *= m_CtrlSpeedFactor;
        }
        else
        {
            dx *= m_SpeedFactor;
            dy *= m_SpeedFactor;
        }

        mouseMotionNavigationEvent( dx, dy, evt );
    }
1793
1794
    else if( !isSelectionEnabled() )
        findObjectUnderCursor( evt->pos() );
1795
1796
1797
1798
1799
1800
1801
1802
1803
}


void GLViewer::wheelEvent( QWheelEvent* evt )
{
	if( evt->orientation() == Qt::Vertical )
	{
        if( !isSelectionEnabled() )
        {