QtBaseViewer.cc 47.4 KB
Newer Older
Jan Möbius's avatar
 
Jan Möbius committed
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
//=============================================================================
//
//                               OpenFlipper
//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
//                           www.openflipper.org
//
//-----------------------------------------------------------------------------
//
//                                License
//
//  OpenFlipper is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  OpenFlipper is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
//
Jan Möbius's avatar
Jan Möbius committed
26
27
28
//   $Revision$
//   $Author$
//   $Date$
Jan Möbius's avatar
 
Jan Möbius committed
29
30
31
32
33
34
35
36
//
//=============================================================================




//=============================================================================
//
Jan Möbius's avatar
 
Jan Möbius committed
37
//  CLASS glViewer - IMPLEMENTATION
Jan Möbius's avatar
 
Jan Möbius committed
38
39
40
41
42
43
44
45
46
//
//=============================================================================


//== INCLUDES =================================================================

#include "QtBaseViewer.hh"
#include "QtGLGraphicsScene.hh"
#include "QtGLGraphicsView.hh"
Jan Möbius's avatar
Jan Möbius committed
47
#include "QtGLViewerLayout.hh"
Jan Möbius's avatar
 
Jan Möbius committed
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
#include <ACG/QtWidgets/QtWheel.hh>
#include <ACG/Scenegraph/DrawModes.hh>
#include <ACG/GL/gl.hh>

#include <iostream>
#include <string>
#include <assert.h>

#include <QMimeData>
#include <QToolButton>
#include <QFrame>

#include <QClipboard>
#include <QApplication>
#include <QSplitter>
#include <QLayout>
#include <QPushButton>
#include <QLabel>
#include <QStatusBar>
#include <QImage>
#include <QColorDialog>
#include <QFileDialog>
#include <QToolTip>
#include <QTextStream>
#include <QDateTime>
#include <QTimer>

#include <QDesktopWidget>
#include <QMouseEvent>
#include <QVBoxLayout>
#include <QKeyEvent>
#include <QGridLayout>
#include <QContextMenuEvent>
#include <QWheelEvent>
#include <QDropEvent>
#include <QPixmap>
#include <QMenu>
#include <QVariant>
#include <QButtonGroup>
#include <QToolBar>

#include <QGraphicsWidget>
#include <QGraphicsGridLayout>
#include <QGraphicsProxyWidget>
Jan Möbius's avatar
 
Jan Möbius committed
92
93
#include <QPainter>
#include <QPaintEngine>
Jan Möbius's avatar
 
Jan Möbius committed
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115

#ifdef max
#  undef max
#endif

#ifdef min
#  undef min
#endif


//== NAMESPACES ===============================================================



//== IMPLEMENTATION ==========================================================

static const char          VIEW_MAGIC[] =
  "ACG::QtWidgets::QGLViewerWidget encoded view";

//== IMPLEMENTATION ==========================================================


Jan Möbius's avatar
 
Jan Möbius committed
116
117
glViewer::glViewer( QtGLGraphicsScene* _scene,
		    QGLWidget* _glWidget,
Dirk Wilden's avatar
Dirk Wilden committed
118
        Viewer::ViewerProperties& _properties,
Jan Möbius's avatar
 
Jan Möbius committed
119
120
121
122
		    QGraphicsWidget* _parent,
		    const char* /* _name */ ,
		    QStatusBar *_statusBar) :
  QGraphicsWidget(_parent),
123
  statusbar_(_statusBar),
Jan Möbius's avatar
 
Jan Möbius committed
124
125
126
  glareaGrabbed_(false),
  projectionUpdateLocked_(false),
  blending_(true),
Jan Möbius's avatar
 
Jan Möbius committed
127
128
  glScene_(_scene),
  glWidget_(_glWidget),
Jan Möbius's avatar
 
Jan Möbius committed
129
  pick_mode_name_(""),
130
  pick_mode_idx_(-1),
Dirk Wilden's avatar
Dirk Wilden committed
131
  properties_(_properties),
132
  glstate_(0)
Jan Möbius's avatar
 
Jan Möbius committed
133
134
135
{

  // widget stuff
Jan Möbius's avatar
 
Jan Möbius committed
136
  createWidgets(_statusBar);
Jan Möbius's avatar
 
Jan Möbius committed
137
138
139

  // bind GL context to GL state class
  glstate_ = new ACG::GLState();
140
141
  properties_.setglState( glstate_ );

Jan Möbius's avatar
 
Jan Möbius committed
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
  // state
  orthoWidth_       = 2.0;
  isRotating_       = false;
  near_             = 0.1;
  far_              = 100.0;
  fovy_             = 45.0;

  focalDist_        = 3.0;
  eyeDist_          = 0.01;

  sceneGraphRoot_   = 0;
  curDrawMode_      = ACG::SceneGraph::DrawModes::NONE;
  availDrawModes_   = ACG::SceneGraph::DrawModes::NONE;

  normalsMode_      = DONT_TOUCH_NORMALS;
  projectionMode_   = PERSPECTIVE_PROJECTION;
158

Jan Möbius's avatar
 
Jan Möbius committed
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

  light_matrix_.identity();

  trackMouse_ = false;

  // stereo
  stereo_ = false;


  pickMenu_ = 0;
  drawMenu_ = 0;


  // Note: we start locked (initialization of updateLocked_)
  // will be unlocked in initializeGL()

  QSizePolicy sp = sizePolicy();
  sp.setHorizontalPolicy( QSizePolicy::Expanding );
  sp.setVerticalPolicy( QSizePolicy::Expanding );
  sp.setHorizontalStretch( 1 );
  sp.setVerticalStretch( 1 );
  setSizePolicy( sp );

  redrawTime_.start ();

184
185
186
187
188
189
190
  // timer for animation
  timer_ = new QTimer( this );
  connect( timer_, SIGNAL(timeout()), this, SLOT( slotAnimation()) );

  allowRotation_ = true;


Jan Möbius's avatar
 
Jan Möbius committed
191
192
193
194
195
  connect( &properties_,SIGNAL(updated()), this, SLOT( slotPropertiesUpdated() ) );
  connect( &properties_,SIGNAL(actionModeChanged(Viewer::ActionMode)), this, SLOT( updateActionMode(Viewer::ActionMode) ) );

  properties_.setExamineMode();

Dirk Wilden's avatar
Dirk Wilden committed
196
197
198
  //check for updated properties once
  slotPropertiesUpdated();

Jan Möbius's avatar
 
Jan Möbius committed
199
  setAcceptDrops(true);
Jan Möbius's avatar
 
Jan Möbius committed
200
201
202
203
204
205
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
206
glViewer::~glViewer()
Jan Möbius's avatar
 
Jan Möbius committed
207
208
209
210
211
212
213
214
215
{
  delete glstate_;
}


//-----------------------------------------------------------------------------


QSize
Jan Möbius's avatar
 
Jan Möbius committed
216
glViewer::sizeHint() const
Jan Möbius's avatar
 
Jan Möbius committed
217
218
219
220
221
222
223
224
{
  return QSize( 600, 600 );
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
225
void glViewer::setStatusBar(QStatusBar* _sb)
Jan Möbius's avatar
 
Jan Möbius committed
226
{
227
  statusbar_ = _sb;
Jan Möbius's avatar
 
Jan Möbius committed
228
229
230
231
232
}

//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
233
void glViewer::makeCurrent() {
Jan Möbius's avatar
 
Jan Möbius committed
234
235
236
  glWidget_->makeCurrent();
}

Jan Möbius's avatar
 
Jan Möbius committed
237
void glViewer::swapBuffers() {
Jan Möbius's avatar
 
Jan Möbius committed
238
239
240
241
242
243
244
  glWidget_->swapBuffers();
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
245
void glViewer::sceneGraph(ACG::SceneGraph::BaseNode* _root)
Jan Möbius's avatar
 
Jan Möbius committed
246
{
Jan Möbius's avatar
Jan Möbius committed
247
248
//   if (sceneGraphRoot_ == _root)
//     return;
Jan Möbius's avatar
Jan Möbius committed
249

Jan Möbius's avatar
 
Jan Möbius committed
250
251
  sceneGraphRoot_ = _root;

Jan Möbius's avatar
Jan Möbius committed
252
  if (sceneGraphRoot_ )
Jan Möbius's avatar
 
Jan Möbius committed
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
  {
    // get draw modes
    ACG::SceneGraph::CollectDrawModesAction action;
    ACG::SceneGraph::traverse(sceneGraphRoot_, action);
    availDrawModes_ = action.drawModes();
    updatePopupMenu();

    // get scene size
    ACG::SceneGraph::BoundingBoxAction act;
    ACG::SceneGraph::traverse(sceneGraphRoot_, act);

    ACG::Vec3d bbmin = (ACG::Vec3d) act.bbMin();
    ACG::Vec3d bbmax = (ACG::Vec3d) act.bbMax();

    if ( ( bbmin[0] > bbmax[0] ) ||
         ( bbmin[1] > bbmax[1] ) ||
         ( bbmin[2] > bbmax[2] )   )
      setScenePos( ACG::Vec3d( 0.0,0.0,0.0 ) , 1.0 );
    else
      setScenePos( ( bbmin + bbmax )        * 0.5,
                   ( bbmax - bbmin ).norm() * 0.5 );
  }

  updateGL();

  emit(signalSceneGraphChanged(sceneGraphRoot_));
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
285
void glViewer::trackMouse(bool _track)
Jan Möbius's avatar
 
Jan Möbius committed
286
287
288
289
290
291
292
{
  trackMouse_ = _track;
}


//-----------------------------------------------------------------------------

Jan Möbius's avatar
 
Jan Möbius committed
293
void glViewer::perspectiveProjection()
Jan Möbius's avatar
 
Jan Möbius committed
294
295
296
297
298
299
{
  projectionMode(PERSPECTIVE_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
 
Jan Möbius committed
300
void glViewer::orthographicProjection()
Jan Möbius's avatar
 
Jan Möbius committed
301
302
303
304
305
306
{
  projectionMode(ORTHOGRAPHIC_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
 
Jan Möbius committed
307
void glViewer::toggleProjectionMode()
Jan Möbius's avatar
 
Jan Möbius committed
308
309
310
311
312
313
314
315
316
317
{
  if (projectionMode_ == ORTHOGRAPHIC_PROJECTION)
    projectionMode(PERSPECTIVE_PROJECTION);
  else
    projectionMode(ORTHOGRAPHIC_PROJECTION);

  updateGL();
}


Jan Möbius's avatar
 
Jan Möbius committed
318
void glViewer::projectionMode(ProjectionMode _p)
Jan Möbius's avatar
 
Jan Möbius committed
319
320
{
  if ((projectionMode_ = _p) == ORTHOGRAPHIC_PROJECTION)
321
    emit projectionModeChanged( true );
Jan Möbius's avatar
 
Jan Möbius committed
322
  else
323
    emit projectionModeChanged( false );
Jan Möbius's avatar
 
Jan Möbius committed
324
325
326
327
328

  updateProjectionMatrix();
}


Jan Möbius's avatar
 
Jan Möbius committed
329
void glViewer::updateProjectionMatrix()
Jan Möbius's avatar
 
Jan Möbius committed
330
331
332
333
334
335
336
337
338
339
340
341
{
  if( projectionUpdateLocked_ )
    return;

  makeCurrent();

  glstate_->reset_projection();

  switch (projectionMode_)
  {
    case ORTHOGRAPHIC_PROJECTION:
    {
Jan Möbius's avatar
Jan Möbius committed
342
343
344
345
346
347
348
      double aspect;

      if (isVisible())
        aspect = (double) glWidth() / (double) glHeight();
      else
	aspect = 1.0;

Jan Möbius's avatar
 
Jan Möbius committed
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
      glstate_->ortho( -orthoWidth_, orthoWidth_,
		       -orthoWidth_/aspect, orthoWidth_/aspect,
		       near_, far_ );
      break;
    }

    case PERSPECTIVE_PROJECTION:
    {
      glstate_->perspective(fovy_,
			    (GLdouble) glWidth() / (GLdouble) glHeight(),
			    near_, far_);
      break;
    }
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
369
void glViewer::setScenePos(const ACG::Vec3d& _center, double _radius)
Jan Möbius's avatar
 
Jan Möbius committed
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
{
  scene_center_ = trackball_center_ = _center;
  scene_radius_ = trackball_radius_ = _radius;

  orthoWidth_ = 2.0   * scene_radius_;
  near_       = 0.001 * scene_radius_;
  far_        = 10.0  * scene_radius_;

  updateProjectionMatrix();
  updateGL();
}


//----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
386
void glViewer::viewingDirection( const ACG::Vec3d& _dir, const ACG::Vec3d& _up )
Jan Möbius's avatar
 
Jan Möbius committed
387
388
389
390
391
392
393
394
395
396
397
398
{
  // calc eye point for this direction
  ACG::Vec3d eye = scene_center_ - _dir*(3.0*scene_radius_);

  glstate_->reset_modelview();
  glstate_->lookAt((ACG::Vec3d)eye, (ACG::Vec3d)scene_center_, (ACG::Vec3d)_up);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
399
void glViewer::updateActionMode(Viewer::ActionMode)
Jan Möbius's avatar
 
Jan Möbius committed
400
401
402
403
404
{

  trackMouse(false);


Jan Möbius's avatar
 
Jan Möbius committed
405
  switch ( properties_.actionMode() )
Jan Möbius's avatar
 
Jan Möbius committed
406
  {
Jan Möbius's avatar
 
Jan Möbius committed
407
    case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
408
    {
Jan Möbius's avatar
 
Jan Möbius committed
409
      setCursor(Qt::PointingHandCursor);
Jan Möbius's avatar
 
Jan Möbius committed
410
411
412
413
      break;
    }


Jan Möbius's avatar
 
Jan Möbius committed
414
    case Viewer::LightMode:
Jan Möbius's avatar
 
Jan Möbius committed
415
    {
Jan Möbius's avatar
 
Jan Möbius committed
416
      setCursor(Qt::PointingHandCursor);
Jan Möbius's avatar
 
Jan Möbius committed
417
418
419
420
      break;
    }


Jan Möbius's avatar
 
Jan Möbius committed
421
    case Viewer::PickingMode:
Jan Möbius's avatar
 
Jan Möbius committed
422
    {
Jan Möbius's avatar
 
Jan Möbius committed
423
      setCursor(Qt::ArrowCursor);
Jan Möbius's avatar
 
Jan Möbius committed
424
      if (pick_mode_idx_ != -1) {
Jan Möbius's avatar
 
Jan Möbius committed
425
426
	trackMouse(pick_modes_[pick_mode_idx_].tracking);
        setCursor(pick_modes_[pick_mode_idx_].cursor);
Jan Möbius's avatar
 
Jan Möbius committed
427
428
429
430
431
432
      }

      break;
    }


Jan Möbius's avatar
 
Jan Möbius committed
433
    case Viewer::QuestionMode:
Jan Möbius's avatar
 
Jan Möbius committed
434
    {
Jan Möbius's avatar
 
Jan Möbius committed
435
      setCursor(Qt::WhatsThisCursor);
Jan Möbius's avatar
 
Jan Möbius committed
436
437
438
439
440
      break;
    }
  }

  //emit pickmodeChanged with either the name of the current pickmode or an empty string
Jan Möbius's avatar
 
Jan Möbius committed
441
  if( properties_.pickingMode() )
Jan Möbius's avatar
 
Jan Möbius committed
442
443
444
445
446
447
448
449
450
    emit(signalPickModeChanged(pick_mode_name_));
  else
    emit(signalPickModeChanged(""));
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
451
void glViewer::normalsMode(NormalsMode _mode)
Jan Möbius's avatar
 
Jan Möbius committed
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
{
  makeCurrent();

  switch(normalsMode_ = _mode)
  {
    case DONT_TOUCH_NORMALS:
      glDisable(GL_NORMALIZE);
      break;

    case NORMALIZE_NORMALS:
      glEnable(GL_NORMALIZE);
      break;
  }

  updateGL();
}


//-----------------------------------------------------------------------------


void
Jan Möbius's avatar
 
Jan Möbius committed
474
glViewer::copyToImage( QImage& _image,
Jan Möbius's avatar
Jan Möbius committed
475
476
		       unsigned int _l, unsigned int _t,
		       unsigned int _w, unsigned int _h,
Jan Möbius's avatar
 
Jan Möbius committed
477
478
479
			   GLenum /* _buffer */ )
{
  makeCurrent();
Jan Möbius's avatar
Jan Möbius committed
480
  _image = glWidget_->grabFrameBuffer(true).copy (_l, _t, _w, _h).convertToFormat (QImage::Format_RGB32);
Jan Möbius's avatar
 
Jan Möbius committed
481
482
483
484
485
486
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
487
void glViewer::updateGL()
Jan Möbius's avatar
 
Jan Möbius committed
488
{
Jan Möbius's avatar
 
Jan Möbius committed
489
  if (!properties_.updateLocked() && isVisible() )
Jan Möbius's avatar
 
Jan Möbius committed
490
  {
Jan Möbius's avatar
 
Jan Möbius committed
491
    update();
Jan Möbius's avatar
 
Jan Möbius committed
492
493
494
495
496
497
498
499
  }
}



//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
500
void glViewer::drawScene()
Jan Möbius's avatar
 
Jan Möbius committed
501
502
503
504
505
{
  QTime  timer;
  timer.start();


Jan Möbius's avatar
 
Jan Möbius committed
506
507
508
509
  // *****************************************************************
  // Adjust clipping planes
  // *****************************************************************
  // Far plane
Jan Möbius's avatar
 
Jan Möbius committed
510
  ACG::Vec3d c = glstate_->modelview().transform_point(scene_center_);
Jan Möbius's avatar
 
Jan Möbius committed
511
512

  // Set far plane
Jan Möbius's avatar
 
Jan Möbius committed
513
  far_    = std::max(0.0002f * scene_radius_,  -(c[2] - scene_radius_));
Jan Möbius's avatar
 
Jan Möbius committed
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530

  // Set near plane
  near_   = std::max(0.0001f * scene_radius_,  -(c[2] + scene_radius_));

  // measure distance from scene center ( as projection onto the z-Axis )
//   if ( -c[2] < scene_radius_ ) {
//     std::cerr << "Camera in scene radius" << std::endl;
//
//   }
//
//   std::cerr << "-c[2]   : " << -c[2] << std::endl;
//   std::cerr << "radius  : " << scene_radius_ << std::endl;
//   std::cerr << "z-range : " << far_ - near_ << std::endl;
//   std::cerr << "Near    : " << near_ << std::endl;
//   std::cerr << "Far     : " << far_ << std::endl;
//   near_   = std::max(far_ / 256.0f,  -(c[2] + scene_radius_));

Jan Möbius's avatar
 
Jan Möbius committed
531
532
533
534
535
536
537
538
539
540
541
542
  updateProjectionMatrix();

  // store time since last repaint in gl state and restart timer
  glstate_->set_msSinceLastRedraw (redrawTime_.restart ());

  // draw mono or stereo
  makeCurrent();
  if (stereo_) drawScene_stereo();
  else         drawScene_mono();

  glFinish();
  frame_time_ = timer.elapsed();
Jan Möbius's avatar
Jan Möbius committed
543
544


Jan Möbius's avatar
 
Jan Möbius committed
545
546
547
548
549
550
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
551
void glViewer::drawScene_mono()
Jan Möbius's avatar
 
Jan Möbius committed
552
553
554
{
  if (sceneGraphRoot_)
  {
555
    if (! properties_.renderPicking() ) {
Jan Möbius's avatar
 
Jan Möbius committed
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
      ACG::SceneGraph::DrawAction action(curDrawMode_, false);
      ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, curDrawMode_);

      if( blending_ )
      {
        ACG::SceneGraph::DrawAction action(curDrawMode_, true);
        ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, curDrawMode_);
      }
    } else {

      // prepare GL state
      makeCurrent();

      glDisable(GL_LIGHTING);
      glClear(GL_DEPTH_BUFFER_BIT);
      glInitNames();
      glPushName((GLuint) 0);

      // do the picking
575
      ACG::SceneGraph::PickAction action(properties_.renderPickingMode());
Jan Möbius's avatar
 
Jan Möbius committed
576
577
578
579
580
      ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_);

      glEnable(GL_LIGHTING);
    }
  }
Jan Möbius's avatar
Jan Möbius committed
581
582

  draw_lights();
Jan Möbius's avatar
 
Jan Möbius committed
583
584
585
586
587
588
589
}


//-----------------------------------------------------------------------------


void
Jan Möbius's avatar
 
Jan Möbius committed
590
glViewer::drawScene_stereo()
Jan Möbius's avatar
 
Jan Möbius committed
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
{
  double l, r, t, b, w, h, a, radians, wd2, ndfl;

  w = glWidth();
  h = glHeight();
  a = w / h;

  radians = fovy_ * 0.5 / 180.0 * M_PI;
  wd2     = near_ * tan(radians);
  ndfl    = near_ / focalDist_ * scene_radius_;

  l = -a*wd2;
  r =  a*wd2;
  t =  wd2;
  b = -wd2;

  double offset  = 0.5 * eyeDist_;
  double offset2 = offset * ndfl;



  // left eye
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glFrustum(l+offset2, r+offset2, b, t, near_, far_);
  glTranslatef(-offset, 0.0, 0.0);
  glMatrixMode(GL_MODELVIEW);
  glDrawBuffer(GL_BACK_LEFT);
Jan Möbius's avatar
 
Jan Möbius committed
619
620
  glstate_->clearBuffers ();
  glClear(GL_DEPTH_BUFFER_BIT);
Jan Möbius's avatar
 
Jan Möbius committed
621
622
623
624
625
626
627
628
629
630
  drawScene_mono();


  // right eye
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glFrustum(l-offset2, r-offset2, b, t, near_, far_);
  glTranslatef(offset, 0.0, 0.0);
  glMatrixMode(GL_MODELVIEW);
  glDrawBuffer(GL_BACK_RIGHT);
Jan Möbius's avatar
 
Jan Möbius committed
631
632
  glstate_->clearBuffers ();
  glClear(GL_DEPTH_BUFFER_BIT);
Jan Möbius's avatar
 
Jan Möbius committed
633
634
635
636
637
638
639
640
641
  drawScene_mono();
  glDrawBuffer(GL_BACK);
}



//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
642
void glViewer::setHome()
Jan Möbius's avatar
 
Jan Möbius committed
643
644
645
646
647
648
649
650
651
{
  home_modelview_          = glstate_->modelview();
  home_inverse_modelview_  = glstate_->inverse_modelview();
  homeOrthoWidth_          = orthoWidth_;
  home_center_             = trackball_center_;
  home_radius_             = trackball_radius_;
}


Jan Möbius's avatar
 
Jan Möbius committed
652
void glViewer::home()
Jan Möbius's avatar
 
Jan Möbius committed
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
{
  makeCurrent();
  glstate_->set_modelview(home_modelview_, home_inverse_modelview_);
  orthoWidth_ = homeOrthoWidth_;
  trackball_center_ = home_center_;
  trackball_radius_ = home_radius_;
  updateProjectionMatrix();
  updateGL();

}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
668
void glViewer::viewAll()
Jan Möbius's avatar
 
Jan Möbius committed
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
{
  makeCurrent();

  // move center (in camera coords) to origin and translate in -z dir
  translate(-(glstate_->modelview().transform_point(scene_center_))
	    - ACG::Vec3d(0.0, 0.0, 3.0*scene_radius_ ));

  orthoWidth_ = 1.1*scene_radius_;
  double aspect = (double) glWidth() / (double) glHeight();
  if (aspect > 1.0) orthoWidth_ *= aspect;
  updateProjectionMatrix();
  updateGL();

}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
688
void glViewer::flyTo(const QPoint& _pos, bool _move_back)
Jan Möbius's avatar
 
Jan Möbius committed
689
690
691
692
693
694
695
696
697
698
{
  makeCurrent();

  unsigned int nodeIdx, targetIdx;
  ACG::Vec3d hitPoint;

  if (pick( ACG::SceneGraph::PICK_ANYTHING, _pos, nodeIdx, targetIdx, &hitPoint))
  {
    if (projectionMode_ == PERSPECTIVE_PROJECTION)
    {
699
      ACG::Vec3d eye(glstate_->eye());
Jan Möbius's avatar
 
Jan Möbius committed
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
      ACG::Vec3d t = hitPoint - eye;
      ACG::Vec3d e = eye + t * (_move_back ? -0.5f : 0.5f);
      flyTo(e, hitPoint, 300);
    }
    else
    {
      // Zoom in or out?
      orthoWidth_ *= _move_back ? 2.0 : 0.5;

      // Set the double click point as the new trackball center
      // Rotations will use this point as the center.
      trackball_center_ = hitPoint;

      /// @todo : Translate view such that hitpoint is in center of viewport

      // Update the projection matrix
      updateProjectionMatrix();

      // Redraw scene
      updateGL();
    }

Jan Möbius's avatar
Jan Möbius committed
722

Jan Möbius's avatar
 
Jan Möbius committed
723
724
725
726
  }
}


Jan Möbius's avatar
 
Jan Möbius committed
727
void glViewer::flyTo(const ACG::Vec3d&  _position,
Jan Möbius's avatar
 
Jan Möbius committed
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
			 const ACG::Vec3d&  _center,
			 double        _time)
{
  makeCurrent();

  // compute rotation
  ACG::Vec3d c = glstate_->modelview().transform_point(_center);
  ACG::Vec3d p = glstate_->modelview().transform_point(_position);
  ACG::Vec3d view =(p-c).normalize();
  ACG::Vec3d z(0,0,1);
  ACG::Vec3d axis = (z % -view).normalize();
  double angle = acos(std::max(-1.0,
			      std::min(1.0,
				       (z | view)))) / M_PI * 180.0;

  if (angle > 175)
    axis  = ACG::Vec3d(0,1,0);


  // compute translation
  ACG::Vec3d target = glstate_->modelview().transform_point(_center);
  ACG::Vec3d trans ( -target[0],
		-target[1],
		-target[2] - (_position-_center).norm() );



  // how many frames in _time ms ?
  unsigned int  frames = (unsigned int)(_time / frame_time_);
  if (frames > 1000) frames=1000;




  // animate it
  if (frames > 10)
  {
    ACG::Vec3d t = trans / (double)frames;
    double a = angle / (double)frames;

    for (unsigned int i=0; i<frames; ++i)
    {
      translate(t);
      if (fabs(a) > FLT_MIN)
	     rotate(axis, a, _center);

Jan Möbius's avatar
 
Jan Möbius committed
774
775
      update();
      qApp->processEvents();
Jan Möbius's avatar
 
Jan Möbius committed
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
    }
  }


  // no animation
  else
  {
    translate(trans);
    if (fabs(angle) > FLT_MIN)
      rotate(axis, angle, _center);

    updateGL();
  }


  trackball_center_ = _center;
  trackball_radius_ = std::max(scene_radius_,
			       (_center-_position).norm()*0.9f);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
800
void glViewer::setView(const ACG::GLMatrixd& _modelview,
Jan Möbius's avatar
 
Jan Möbius committed
801
802
803
804
805
806
807
808
809
810
811
			                  const ACG::GLMatrixd& _inverse_modelview)
{
  makeCurrent();
  glstate_->set_modelview(_modelview, _inverse_modelview);
  updateGL();
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
812
void glViewer::initializeGL()
Jan Möbius's avatar
 
Jan Möbius committed
813
814
815
816
817
818
819
{
  // we use GLEW to manage extensions
  // initialize it first
  glewInit();


  // lock update
820
  properties_.lockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
821
822
823
824
825
826
827
828
829
830
831
832
833
834

  // init GL state
  glstate_->initialize();

  // OpenGL state
  glEnable(GL_DEPTH_TEST);
  glEnable(GL_LIGHTING);
  glDisable(GL_DITHER);
  glShadeModel( GL_FLAT );


  projectionMode(   projectionMode_   );
  normalsMode(      normalsMode_      );

835
  // Update all settings which would require a redraw
836
  applyProperties();
Jan Möbius's avatar
 
Jan Möbius committed
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

  // light sources
  light_matrix_.identity();
  update_lights();


  // scene pos and size
  scene_center_ = trackball_center_ = ACG::Vec3d( 0.0, 0.0, 0.0 );
  scene_radius_ = trackball_radius_ = 1.0;
  orthoWidth_   = 2.0;


  // modelview
  glstate_->translate(0.0, 0.0, -3.0);
  setHome();


  // pixel transfer
  glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
  glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
  glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  glPixelStorei(GL_PACK_ROW_LENGTH, 0);
  glPixelStorei(GL_PACK_SKIP_ROWS, 0);
  glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
  glPixelStorei(GL_PACK_ALIGNMENT, 1);


  // unlock update (we started locked)
866
  properties_.unLockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
867
868
869
870
871
}


//-----------------------------------------------------------------------------

Jan Möbius's avatar
Jan Möbius committed
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
/**
 *
 */
void  glViewer::draw_lights() {
//   makeCurrent();
// //
//   glMatrixMode(GL_MODELVIEW);
//   glPushMatrix();
//   glLoadIdentity();
//   glMultMatrixd(light_matrix_.data());
//
//   std::cerr << "light_matrix_\n" << light_matrix_ << std::endl;
// //
//   glPointSize(3);
// //
//   glColor3f(1.0,1.0,1.0);
// //   glDisable(GL_LIGHTING);
// //   glDisable(GL_BLEND);
//   glBegin(GL_LINES);
//     glVertex3f(0.0,  0.0, -1000.0);
//     glVertex3f(0.0,  0.0, 10000.0);
//     glVertex3f(0.0, -1000.0,0.0);
//     glVertex3f(0.0, 1000.0,0.0);
//     glVertex3f(1000.0,0.0,0.0);
//     glVertex3f(-1000.0,0.0,0.0);
// //     glVertex3d(0.0,  0.0, 1.1);
// //     glVertex3d(-1.0,  1.0, 0.8);
// //     glVertex3d( 1.0,  1.0, 0.8);
//
//   glEnd();
// //   glEnable(GL_LIGHTING);
// //   glEnable(GL_BLEND);
// //
//   glPopMatrix();

}
Jan Möbius's avatar
 
Jan Möbius committed
908

Jan Möbius's avatar
 
Jan Möbius committed
909
void glViewer::update_lights()
Jan Möbius's avatar
 
Jan Möbius committed
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
{
  makeCurrent();

  glMatrixMode(GL_MODELVIEW);
  glPushMatrix();
  glLoadIdentity();
  glMultMatrixd(light_matrix_.data());

  GLfloat pos[4], col[4];

  col[0] = col[1] = col[2] = 0.7;
  pos[3] = col[3] = 0.0;

#define SET_LIGHT(i,x,y,z) { 			\
    pos[0]=x; pos[1]=y; pos[2]=z;		\
    glLightfv(GL_LIGHT##i, GL_POSITION, pos);	\
    glLightfv(GL_LIGHT##i, GL_DIFFUSE,  col);	\
    glLightfv(GL_LIGHT##i, GL_SPECULAR, col);	\
    glEnable(GL_LIGHT##i);			\
  }

  SET_LIGHT(0,  0.0,  0.0, 1.0);
  SET_LIGHT(1, -1.0,  1.0, 0.7);
  SET_LIGHT(2,  1.0,  1.0, 0.7);

  col[0] = col[1] = col[2] = 0.3; col[3] = 1.0;
  glLightModelfv(GL_LIGHT_MODEL_AMBIENT, col);

  glPopMatrix();
}


Jan Möbius's avatar
 
Jan Möbius committed
942
void glViewer::rotate_lights(ACG::Vec3d& _axis, double _angle)
Jan Möbius's avatar
 
Jan Möbius committed
943
944
945
946
947
948
949
950
951
{
  light_matrix_.rotate(_angle, _axis[0], _axis[1], _axis[2], ACG::MULT_FROM_LEFT);
  update_lights();
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
952
void glViewer::paintGL()
Jan Möbius's avatar
 
Jan Möbius committed
953
954
955
956
957
{
  static bool initialized = false;
  if (!initialized)
  {
    // lock update
958
    properties_.lockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
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

    // init GL state
    glstate_->initialize();

    // initialize lights
    light_matrix_.identity();

    // scene pos and size
    scene_center_ = trackball_center_ = ACG::Vec3d( 0.0, 0.0, 0.0 );
    scene_radius_ = trackball_radius_ = 1.0;
    orthoWidth_   = 2.0;

    // modelview
    glstate_->translate(0.0, 0.0, -3.0);
    setHome();

    // pixel transfer
    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
    glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
    glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
    glPixelStorei(GL_PACK_ROW_LENGTH, 0);
    glPixelStorei(GL_PACK_SKIP_ROWS, 0);
    glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
    glPixelStorei(GL_PACK_ALIGNMENT, 1);

    // unlock update (we started locked)
986
    properties_.unLockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
987
988
989
990

    initialized = true;
  }

991
  if (!properties_.updateLocked())
Jan Möbius's avatar
 
Jan Möbius committed
992
  {
993
    properties_.lockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010

    glPushAttrib (GL_ALL_ATTRIB_BITS);

    glEnable(GL_DEPTH_TEST);
    glEnable(GL_LIGHTING);
    glDisable(GL_DITHER);
    glShadeModel( GL_FLAT );

    glMatrixMode(GL_PROJECTION);
    glPushMatrix();

    glMatrixMode(GL_MODELVIEW);
    glPushMatrix();


    normalsMode(      normalsMode_      );

1011
    applyProperties();
1012

Jan Möbius's avatar
 
Jan Möbius committed
1013
1014
1015
1016
1017
1018
1019
1020
1021
    // light sources
    update_lights();

    glstate_->setState ();

    glColor4f(1.0,0.0,0.0,1.0);

    // clear (stereo mode clears buffers on its own)
    if (!stereo_)
Jan Möbius's avatar
 
Jan Möbius committed
1022
      glstate_->clearBuffers ();
Jan Möbius's avatar
 
Jan Möbius committed
1023

1024
    properties_.unLockUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041

    // draw scene
    drawScene();

    glPopMatrix();

    glMatrixMode(GL_PROJECTION);
    glPopMatrix();

    glPopAttrib ();
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1042
void glViewer::resizeEvent(QGraphicsSceneResizeEvent *)
Jan Möbius's avatar
 
Jan Möbius committed
1043
1044
{
  updateProjectionMatrix();
Jan Möbius's avatar
 
Jan Möbius committed
1045
1046
1047
1048
1049
  glstate_->viewport(scenePos().x(),
		     scene()->height () - scenePos().y() - size().height (),
		     size().width (), size().height (),
		     scene()->width (), scene()->height ());
  update();
Jan Möbius's avatar
 
Jan Möbius committed
1050
1051
}

Jan Möbius's avatar
 
Jan Möbius committed
1052
1053
1054
1055
1056
1057
1058
1059
void glViewer::moveEvent (QGraphicsSceneMoveEvent *)
{
  glstate_->viewport(scenePos().x(),
		     scene()->height () - scenePos().y() - size().height (),
		     size().width (), size().height (),
		     scene()->width (), scene()->height ());
  update();
}
Jan Möbius's avatar
 
Jan Möbius committed
1060
1061
1062

//-----------------------------------------------------------------------------

Jan Möbius's avatar
 
Jan Möbius committed
1063
void glViewer::encodeView(QString& _view)
Jan Möbius's avatar
 
Jan Möbius committed
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
{
  const ACG::GLMatrixd m = glstate_->modelview();
  const ACG::GLMatrixd p = glstate_->projection();

  _view.sprintf("%s\n"
                "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
                "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
                "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
                "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
                "%d %d %d %lf\n",
                VIEW_MAGIC,
                m(0,0), m(0,1), m(0,2), m(0,3),
                m(1,0), m(1,1), m(1,2), m(1,3),
                m(2,0), m(2,1), m(2,2), m(2,3),
                m(3,0), m(3,1), m(3,2), m(3,3),
                p(0,0), p(0,1), p(0,2), p(0,3),
                p(1,0), p(1,1), p(1,2), p(1,3),
                p(2,0), p(2,1), p(2,2), p(2,3),
                p(3,0), p(3,1), p(3,2), p(3,3),
                glWidth(), glHeight(),
                projectionMode_,
                orthoWidth_ );
}


//----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1092
bool glViewer::decodeView(const QString& _view)
Jan Möbius's avatar
 
Jan Möbius committed
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
{
  if (_view.left(sizeof(VIEW_MAGIC)-1) != QString(VIEW_MAGIC))
    return false;



  ACG::GLMatrixd m, p;
  int            w, h, pMode;

  sscanf( (_view.toAscii().data())+sizeof(VIEW_MAGIC)-1,
	  "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
	  "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
	  "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
	  "%lf %lf %lf %lf\n%lf %lf %lf %lf\n"
	  "%d %d %d %lf\n",
	  &m(0,0), &m(0,1), &m(0,2), &m(0,3),
	  &m(1,0), &m(1,1), &m(1,2), &m(1,3),
	  &m(2,0), &m(2,1), &m(2,2), &m(2,3),
	  &m(3,0), &m(3,1), &m(3,2), &m(3,3),
	  &p(0,0), &p(0,1), &p(0,2), &p(0,3),
	  &p(1,0), &p(1,1), &p(1,2), &p(1,3),
	  &p(2,0), &p(2,1), &p(2,2), &p(2,3),
	  &p(3,0), &p(3,1), &p(3,2), &p(3,3),
	  &w, &h,
	  &pMode,
	  &orthoWidth_ );

  makeCurrent();

  if (projectionMode_ != (ProjectionMode)pMode)
    projectionMode((ProjectionMode)pMode);

  glstate_->set_modelview(m);


1128
1129
1130
1131
1132
1133
1134
1135
1136
  std::cerr << "Todo : Add Checkbox if size should also be pasted" << std::endl;

//   if (w>0 && h>0 &&
//       action_["PasteDropSize"]->isChecked() )
//   {
//     glstate_->set_projection(p);
//     glView_->setFixedSize(w,h);
//     updateGeometry();
//   }
Jan Möbius's avatar
 
Jan Möbius committed
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148


  updateGL();


  return true;
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1149
void glViewer::actionCopyView()
1150
1151
1152
1153
1154
1155
1156
1157
1158
{
  QString view; encodeView(view);
  QApplication::clipboard()->setText(view);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1159
void glViewer::actionPasteView()
1160
1161
1162
1163
1164
1165
1166
1167
1168
{
  QString view; view=QApplication::clipboard()->text();
  decodeView(view);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1169
void glViewer::actionDrawMenu( QAction * _action )
Jan Möbius's avatar
 
Jan Möbius committed
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
{
  unsigned int mode( _action->data().toUInt() );

  // combine draw modes
  if (qApp->keyboardModifiers() & Qt::ShiftModifier)
  {
    if (drawMode() & mode)
      drawMode(drawMode() & ~mode);
    else
      drawMode(drawMode() | mode);
  }

  // simply switch draw mode
  else
  {
    // clear all other checked items
    std::vector< QAction * >::iterator aIter, aEnd;

    aEnd = drawMenuActions_.end();
    for( aIter = drawMenuActions_.begin();
	 aIter != aEnd;
	 ++aIter )
    {
      if( (*aIter)->data().toUInt() != mode )
	  (*aIter)->setChecked( false );
    }

    drawMode(mode);
  }

  hidePopupMenus();
  updateGL();
}


//-----------------------------------------------------------------------------

void
Jan Möbius's avatar
 
Jan Möbius committed
1208
glViewer::createWidgets(QStatusBar* _sb)
Jan Möbius's avatar
 
Jan Möbius committed
1209
1210
1211
1212
1213
1214
{
  setStatusBar(_sb);
  drawMenu_=0;
  pickMenu_=0;

  // Construct GL context & widget
1215

Jan Möbius's avatar
 
Jan Möbius committed
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
  wheelZ_=new ACG::QtWidgets::QtWheel( 0,"wheel-z",ACG::QtWidgets::QtWheel::Vertical);
  wheelZ_->setMinimumSize(wheelZ_->sizeHint());
  wheelZ_->setMaximumSize(wheelZ_->sizeHint());
  connect(wheelZ_,SIGNAL(angleChangedBy(double)),
	  this,SLOT(slotWheelZ(double)));
  wheelZ_->setToolTip( "Translate along <b>z-axis</b>.");
  wheelZ_->setWhatsThis( "Translate along <b>z-axis</b>.");

  wheelY_=new ACG::QtWidgets::QtWheel( 0,"wheel-y",ACG::QtWidgets::QtWheel::Horizontal);
  wheelY_->setMinimumSize(wheelY_->sizeHint());
  wheelY_->setMaximumSize(wheelY_->sizeHint());
  connect(wheelY_,SIGNAL(angleChangedBy(double)),
          this,SLOT(slotWheelY(double)));
  wheelY_->setToolTip("Rotate around <b>y-axis</b>.");
  wheelY_->setWhatsThis( "Rotate around <b>y-axis</b>.");

  wheelX_=new ACG::QtWidgets::QtWheel( 0,"wheel-x",ACG::QtWidgets::QtWheel::Vertical);
  wheelX_->setMinimumSize(wheelX_->sizeHint());
  wheelX_->setMaximumSize(wheelX_->sizeHint());
  connect(wheelX_,SIGNAL(angleChangedBy(double)),
          this,SLOT(slotWheelX(double)));
  wheelX_->setToolTip("Rotate around <b>x-axis</b>.");
  wheelX_->setWhatsThis( "Rotate around <b>x-axis</b>.");


  QGraphicsWidget *wheelX = glScene_->addWidget (wheelX_);
  QGraphicsWidget *wheelY = glScene_->addWidget (wheelY_);
  QGraphicsWidget *wheelZ = glScene_->addWidget (wheelZ_);

  wheelX_->setWindowOpacity (0.5);
  wheelY_->setWindowOpacity (0.5);
  wheelZ_->setWindowOpacity (0.5);

  wheelX->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
  wheelY->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
  wheelZ->setCacheMode(QGraphicsItem::DeviceCoordinateCache);

Jan Möbius's avatar
Jan Möbius committed
1253
1254
1255
1256
  glBaseLayout_ = new QtGLViewerLayout;
  glBaseLayout_->addWheelX(wheelX);
  glBaseLayout_->addWheelY(wheelY);
  glBaseLayout_->addWheelZ(wheelZ);
Jan Möbius's avatar
 
Jan Möbius committed
1257

Jan Möbius's avatar
 
Jan Möbius committed
1258
  setLayout(glBaseLayout_);
Jan Möbius's avatar
 
Jan Möbius committed
1259
1260
1261
1262
1263
1264
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1265
void glViewer::updatePopupMenu()
Jan Möbius's avatar
 
Jan Möbius committed
1266
1267
1268
1269
1270
1271
1272
{
  //
  // Draw mode menu
  //

  if ( ! drawMenu_ )
  {
Jan Möbius's avatar
 
Jan Möbius committed
1273
    drawMenu_ = new QMenu( scene()->views().first() );
Jan Möbius's avatar
 
Jan Möbius committed
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
    connect( drawMenu_, SIGNAL( aboutToHide() ),
	     this, SLOT( hidePopupMenus() ) );

  }

  QActionGroup * drawGroup = new QActionGroup( this );
  drawGroup->setExclusive( false );
  connect( drawGroup, SIGNAL( triggered( QAction * ) ),
	   this, SLOT( actionDrawMenu( QAction * ) ) );



  drawMenuActions_.clear();

  std::vector< unsigned int > draw_mode_id;

  draw_mode_id = ACG::SceneGraph::DrawModes::getDrawModeIDs( availDrawModes_ );

  for ( unsigned int i = 0; i < draw_mode_id.size(); ++i )
  {
    unsigned int id    = draw_mode_id[i];
    std::string  descr = ACG::SceneGraph::DrawModes::description( id );

    QAction * action = new QAction( descr.c_str(), drawGroup );
    action->setData( QVariant( id ) );
    action->setCheckable( true );
    action->setChecked( ACG::SceneGraph::DrawModes::containsId( curDrawMode_, id ) );
    drawMenuActions_.push_back( action );
  }


  drawMenu_->clear();
  drawMenu_->addActions( drawGroup->actions() );


}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1315
void glViewer::hidePopupMenus()
Jan Möbius's avatar
 
Jan Möbius committed
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
{
  if ( drawMenu_ )
  {
    drawMenu_->blockSignals(true);
    drawMenu_->hide();
    drawMenu_->blockSignals(false);
  }

  if ( pickMenu_ )
  {
    pickMenu_->blockSignals(true);
    pickMenu_->hide();
    pickMenu_->blockSignals(false);
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1336
void glViewer::translate(const ACG::Vec3d& _trans)
Jan Möbius's avatar
 
Jan Möbius committed
1337
1338
1339
1340
1341
1342
1343
1344
1345
{
  makeCurrent();
  glstate_->translate(_trans[0], _trans[1], _trans[2], ACG::MULT_FROM_LEFT);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1346
void glViewer::initModelviewMatrix()
Jan Möbius's avatar
 
Jan Möbius committed
1347
1348
1349
1350
1351
1352
1353
1354
1355
{
  makeCurrent();
  glstate_->reset_modelview();
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1356
void glViewer::rotate(const ACG::Vec3d&  _axis,
Jan Möbius's avatar
 
Jan Möbius committed
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
                          double        _angle,
                          const ACG::Vec3d&  _center)
{
  makeCurrent();
  ACG::Vec3d t = glstate_->modelview().transform_point(_center);
  glstate_->translate(-t[0], -t[1], -t[2], ACG::MULT_FROM_LEFT);
  glstate_->rotate(_angle, _axis[0], _axis[1], _axis[2], ACG::MULT_FROM_LEFT);
  glstate_->translate( t[0],  t[1],  t[2], ACG::MULT_FROM_LEFT);
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1371
unsigned int glViewer::glWidth() const {
Jan Möbius's avatar
 
Jan Möbius committed
1372
  return size().width();
Jan Möbius's avatar
 
Jan Möbius committed
1373
}
Jan Möbius's avatar
 
Jan Möbius committed
1374
unsigned int glViewer::glHeight() const {
Jan Möbius's avatar
 
Jan Möbius committed
1375
  return size().height();
Jan Möbius's avatar
 
Jan Möbius committed
1376
}
Jan Möbius's avatar
 
Jan Möbius committed
1377
QSize glViewer::glSize() const {
Jan Möbius's avatar
 
Jan Möbius committed
1378
  return QSize(size().width(),size().height());
Jan Möbius's avatar
 
Jan Möbius committed
1379
}
Jan Möbius's avatar
 
Jan Möbius committed
1380
QPoint glViewer::glMapFromGlobal( const QPoint& _pos ) const {
Jan Möbius's avatar
 
Jan Möbius committed
1381
1382
1383
  QPoint p (scene()->views().front()->mapFromGlobal(_pos));
  QPointF f (mapFromScene(QPointF(p.x(), p.y ())));
  return QPoint (f.x(), f.y());
Jan Möbius's avatar
 
Jan Möbius committed
1384
1385
}

Jan Möbius's avatar
 
Jan Möbius committed
1386
QPoint glViewer::glMapToGlobal( const QPoint& _pos ) const {
Jan Möbius's avatar
 
Jan Möbius committed
1387
1388
1389
  QPointF f (mapToScene(QPointF(_pos.x(), _pos.y ())));
  QPoint p (f.x(), f.y());
  return scene()->views().front()->mapToGlobal(p);
Jan Möbius's avatar
 
Jan Möbius committed
1390
1391
1392
1393
1394
}

//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1395
void glViewer::slotWheelX(double _dAngle)
Jan Möbius's avatar
 
Jan Möbius committed
1396
1397
1398
1399
1400
1401
{
  rotate(ACG::Vec3d(1,0,0),ACG::QtWidgets::QtWheel::deg(ACG::QtWidgets::QtWheel::clip(_dAngle)));
  updateGL();

}

Jan Möbius's avatar
 
Jan Möbius committed
1402
void glViewer::slotWheelY(double _dAngle)
Jan Möbius's avatar
 
Jan Möbius committed
1403
1404
1405
1406
1407
1408
{
  rotate(ACG::Vec3d(0,1,0),ACG::QtWidgets::QtWheel::deg(ACG::QtWidgets::QtWheel::clip(_dAngle)));
  updateGL();

}

Jan Möbius's avatar
 
Jan Möbius committed
1409
void glViewer::slotWheelZ(double _dist)
Jan Möbius's avatar
 
Jan Möbius committed
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
{
  double dz=_dist*0.5/M_PI*scene_radius_*2.0;
  translate(ACG::Vec3d(0,0,dz));
  updateGL();

}

//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1420
void glViewer::grabGLArea()
Jan Möbius's avatar
 
Jan Möbius committed
1421
1422
1423
{
  glareaGrabbed_ = true;

Jan Möbius's avatar
 
Jan Möbius committed
1424
1425
1426
  setCursor(Qt::BlankCursor);
  grabMouse();
  grabKeyboard();
Jan Möbius's avatar
 
Jan Möbius committed
1427
1428
}

Jan Möbius's avatar
 
Jan Möbius committed
1429
void glViewer::releaseGLArea()
Jan Möbius's avatar
 
Jan Möbius committed
1430
1431
1432
{
  glareaGrabbed_ = false;

Jan Möbius's avatar
 
Jan Möbius committed
1433
1434
1435
  ungrabMouse();
  ungrabKeyboard();
  setCursor(Qt::ArrowCursor);
Jan Möbius's avatar
 
Jan Möbius committed
1436
1437
1438
1439
1440
1441
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1442
void glViewer::contextMenuEvent(QGraphicsSceneContextMenuEvent* _e)
Jan Möbius's avatar
 
Jan Möbius committed
1443
{
Jan Möbius's avatar
 
Jan Möbius committed
1444
1445
  QPoint p (_e->pos().x(), _e->pos().y());
  emit signalCustomContextMenuRequested (p);
Jan Möbius's avatar
 
Jan Möbius committed
1446
1447
1448
1449
1450
}


//-----------------------------------------------------------------------------

Jan Möbius's avatar
 
Jan Möbius committed
1451
void glViewer::glMousePressEvent(QMouseEvent* _event)
Jan Möbius's avatar
 
Jan Möbius committed
1452
1453
{
  // right button pressed => popup menu (ignore here)
1454
  if (_event->button() != Qt::RightButton )
Jan Möbius's avatar
 
Jan Möbius committed
1455
  {
Jan Möbius's avatar
 
Jan Möbius committed
1456
    switch (properties_.actionMode())
Jan Möbius's avatar
 
Jan Möbius committed
1457
    {
Jan Möbius's avatar
 
Jan Möbius committed
1458
      case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
1459
        if ((_event->modifiers() & Qt::ControlModifier)) // drag&drop
1460
          emit startDragEvent( _event );
Jan Möbius's avatar
 
Jan Möbius committed
1461
1462
1463
1464
        else
          viewMouseEvent(_event); // examine
        break;

Jan Möbius's avatar
 
Jan Möbius committed
1465
      case Viewer::LightMode:
Jan Möbius's avatar
 
Jan Möbius committed
1466
1467
1468
	lightMouseEvent(_event);
	break;

Jan Möbius's avatar
 
Jan Möbius committed
1469
      case Viewer::PickingMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1470
1471
1472
1473
        emit(signalMouseEvent(_event, pick_mode_name_));
        emit(signalMouseEvent(_event));
        break;

Jan Möbius's avatar
 
Jan Möbius committed
1474
      case Viewer::QuestionMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
        emit(signalMouseEventIdentify(_event));
        break;
    }
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1485
void glViewer::glMouseDoubleClickEvent(QMouseEvent* _event)
Jan Möbius's avatar
 
Jan Möbius committed
1486
{
Jan Möbius's avatar
 
Jan Möbius committed
1487
  switch (properties_.actionMode())
Jan Möbius's avatar
 
Jan Möbius committed
1488
  {
Jan Möbius's avatar
 
Jan Möbius committed
1489
    case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
1490
1491
1492
      viewMouseEvent(_event);
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1493
    case Viewer::LightMode:
Jan Möbius's avatar
 
Jan Möbius committed
1494
1495
1496
      lightMouseEvent(_event);
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1497
    case Viewer::PickingMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1498
1499
1500
1501
      emit(signalMouseEvent(_event, pick_mode_name_));
      emit(signalMouseEvent(_event));
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1502
    case Viewer::QuestionMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1503
1504
1505
1506
1507
1508
1509
1510
1511
      emit(signalMouseEventIdentify(_event));
      break;
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1512
void glViewer::glMouseMoveEvent(QMouseEvent* _event)
Jan Möbius's avatar
 
Jan Möbius committed
1513
{
Jan Möbius's avatar
 
Jan Möbius committed
1514
  switch ( properties_.actionMode() )
Jan Möbius's avatar
 
Jan Möbius committed
1515
  {
Jan Möbius's avatar
 
Jan Möbius committed
1516
    case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
1517
1518
1519
      viewMouseEvent(_event);
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1520
    case Viewer::LightMode:
Jan Möbius's avatar
 
Jan Möbius committed
1521
1522
1523
      lightMouseEvent(_event);
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1524
    case Viewer::PickingMode:
Jan Möbius's avatar
 
Jan Möbius committed
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
      // give event to application
      // deliver mouse moves with no button down, if tracking is enabled,
      if ((_event->buttons() & (Qt::LeftButton | Qt::MidButton | Qt::RightButton))
          || trackMouse_)
      {
        emit(signalMouseEvent(_event, pick_mode_name_));
        emit(signalMouseEvent(_event));
      }
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1535
    case Viewer::QuestionMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
      emit(signalMouseEventIdentify(_event));
      break;

    default: // avoid warning
      break;
  }
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1548
void glViewer::glMouseReleaseEvent(QMouseEvent* _event)
Jan Möbius's avatar
 
Jan Möbius committed
1549
1550
1551
1552
1553
{
//   if (_event->button() == Qt::RightButton )
//     hidePopupMenus();

  if (_event->button() != Qt::RightButton ||
Jan Möbius's avatar
 
Jan Möbius committed
1554
      properties_.pickingMode() )
Jan Möbius's avatar
 
Jan Möbius committed
1555
  {
Jan Möbius's avatar
 
Jan Möbius committed
1556
    switch ( properties_.actionMode() )
Jan Möbius's avatar
 
Jan Möbius committed
1557
    {
Jan Möbius's avatar
 
Jan Möbius committed
1558
      case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
1559
1560
1561
        viewMouseEvent(_event);
        break;

Jan Möbius's avatar
 
Jan Möbius committed
1562
      case Viewer::LightMode:
Jan Möbius's avatar
 
Jan Möbius committed
1563
1564
1565
        lightMouseEvent(_event);
        break;

Jan Möbius's avatar
 
Jan Möbius committed
1566
      case Viewer::PickingMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1567
1568
1569
1570
        emit(signalMouseEvent(_event, pick_mode_name_));
        emit(signalMouseEvent(_event));
        break;

Jan Möbius's avatar
 
Jan Möbius committed
1571
      case Viewer::QuestionMode: // give event to application
Jan Möbius's avatar
 
Jan Möbius committed
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
        emit(signalMouseEventIdentify(_event));
        break;

      default: // avoid warning
        break;
    }
  }

  isRotating_ = false;
}


//-----------------------------------------------------------------------------


Jan Möbius's avatar
 
Jan Möbius committed
1587
void glViewer::glMouseWheelEvent(QWheelEvent* _event)
Jan Möbius's avatar
 
Jan Möbius committed
1588
{
Jan Möbius's avatar
 
Jan Möbius committed
1589
  switch ( properties_.actionMode() )
Jan Möbius's avatar
 
Jan Möbius committed
1590
  {
Jan Möbius's avatar
 
Jan Möbius committed
1591
    case Viewer::ExamineMode:
Jan Möbius's avatar
 
Jan Möbius committed
1592
1593
1594
      viewWheelEvent(_event);
      break;

Jan Möbius's avatar
 
Jan Möbius committed
1595