QtBaseViewer.cc 43.1 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

#ifdef max
#  undef max
#endif

#ifdef min
#  undef min
#endif

103
#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
Jan Möbius's avatar
   
Jan Möbius committed
104

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
105
106
#include <OpenFlipper/common/GlobalOptions.hh>

Jan Möbius's avatar
   
Jan Möbius committed
107
108
109
110
111
112
113
114
115
116
117
118
//== NAMESPACES ===============================================================



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

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

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


Jan Möbius's avatar
   
Jan Möbius committed
119
120
glViewer::glViewer( QtGLGraphicsScene* _scene,
		    QGLWidget* _glWidget,
121
                    Viewer::ViewerProperties& _properties,
Jan Möbius's avatar
   
Jan Möbius committed
122
123
124
125
		    QGraphicsWidget* _parent,
		    const char* /* _name */ ,
		    QStatusBar *_statusBar) :
  QGraphicsWidget(_parent),
126
  statusbar_(_statusBar),
Jan Möbius's avatar
   
Jan Möbius committed
127
128
129
  glareaGrabbed_(false),
  projectionUpdateLocked_(false),
  blending_(true),
Jan Möbius's avatar
   
Jan Möbius committed
130
131
  glScene_(_scene),
  glWidget_(_glWidget),
Dirk Wilden's avatar
Dirk Wilden committed
132
  properties_(_properties),
133
  glstate_(0)
Jan Möbius's avatar
   
Jan Möbius committed
134
135
136
{

  // widget stuff
Jan Möbius's avatar
   
Jan Möbius committed
137
  createWidgets(_statusBar);
Jan Möbius's avatar
   
Jan Möbius committed
138
139
140

  // bind GL context to GL state class
  glstate_ = new ACG::GLState();
141
142
  properties_.setglState( glstate_ );

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

  sceneGraphRoot_   = 0;

  normalsMode_      = DONT_TOUCH_NORMALS;
  projectionMode_   = PERSPECTIVE_PROJECTION;
154

Jan Möbius's avatar
   
Jan Möbius committed
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

  light_matrix_.identity();

  trackMouse_ = false;

  // stereo
  stereo_ = false;

  // 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 ();

175
176
177
178
179
180
181
  // timer for animation
  timer_ = new QTimer( this );
  connect( timer_, SIGNAL(timeout()), this, SLOT( slotAnimation()) );

  allowRotation_ = true;


Jan Möbius's avatar
   
Jan Möbius committed
182
183
184
  connect( &properties_,SIGNAL(updated()), this, SLOT( slotPropertiesUpdated() ) );


Dirk Wilden's avatar
Dirk Wilden committed
185
186
187
  //check for updated properties once
  slotPropertiesUpdated();

Jan Möbius's avatar
   
Jan Möbius committed
188
  setAcceptDrops(true);
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
189

190
  setHome();
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
191
192
193
194
195
196
197
198

  // initialize custom anaglyph stereo
  agTexWidth_ = 0;
  agTexHeight_ = 0;
  agTexture_[0] = 0;
  agTexture_[1] = 0;
  agProgram_ = 0;
  customAnaglyphSupported_ = false;
Jan Möbius's avatar
   
Jan Möbius committed
199
200
201
202
203
204
}


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


Jan Möbius's avatar
   
Jan Möbius committed
205
glViewer::~glViewer()
Jan Möbius's avatar
   
Jan Möbius committed
206
{
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
207
  finiCustomAnaglyphStereo ();
Jan Möbius's avatar
   
Jan Möbius committed
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
  {
    // 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
279
void glViewer::trackMouse(bool _track)
Jan Möbius's avatar
   
Jan Möbius committed
280
281
282
283
284
285
286
{
  trackMouse_ = _track;
}


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

Jan Möbius's avatar
   
Jan Möbius committed
287
void glViewer::perspectiveProjection()
Jan Möbius's avatar
   
Jan Möbius committed
288
289
290
291
292
293
{
  projectionMode(PERSPECTIVE_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
294
void glViewer::orthographicProjection()
Jan Möbius's avatar
   
Jan Möbius committed
295
296
297
298
299
300
{
  projectionMode(ORTHOGRAPHIC_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
301
void glViewer::toggleProjectionMode()
Jan Möbius's avatar
   
Jan Möbius committed
302
303
304
305
306
307
308
309
310
311
{
  if (projectionMode_ == ORTHOGRAPHIC_PROJECTION)
    projectionMode(PERSPECTIVE_PROJECTION);
  else
    projectionMode(ORTHOGRAPHIC_PROJECTION);

  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
312
void glViewer::projectionMode(ProjectionMode _p)
Jan Möbius's avatar
   
Jan Möbius committed
313
314
{
  if ((projectionMode_ = _p) == ORTHOGRAPHIC_PROJECTION)
315
    emit projectionModeChanged( true );
Jan Möbius's avatar
   
Jan Möbius committed
316
  else
317
    emit projectionModeChanged( false );
Jan Möbius's avatar
   
Jan Möbius committed
318
319
320
321
322

  updateProjectionMatrix();
}


Jan Möbius's avatar
   
Jan Möbius committed
323
void glViewer::updateProjectionMatrix()
Jan Möbius's avatar
   
Jan Möbius committed
324
325
326
327
328
329
330
331
332
333
334
335
{
  if( projectionUpdateLocked_ )
    return;

  makeCurrent();

  glstate_->reset_projection();

  switch (projectionMode_)
  {
    case ORTHOGRAPHIC_PROJECTION:
    {
Jan Möbius's avatar
Jan Möbius committed
336
337
338
339
340
341
342
      double aspect;

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

Jan Möbius's avatar
   
Jan Möbius committed
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
      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
363
void glViewer::setScenePos(const ACG::Vec3d& _center, double _radius)
Jan Möbius's avatar
   
Jan Möbius committed
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
{
  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
380
void glViewer::viewingDirection( const ACG::Vec3d& _dir, const ACG::Vec3d& _up )
Jan Möbius's avatar
   
Jan Möbius committed
381
382
383
384
385
386
387
388
389
390
391
392
{
  // 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
393
void glViewer::normalsMode(NormalsMode _mode)
Jan Möbius's avatar
   
Jan Möbius committed
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
{
  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
416
glViewer::copyToImage( QImage& _image,
Jan Möbius's avatar
Jan Möbius committed
417
418
		       unsigned int _l, unsigned int _t,
		       unsigned int _w, unsigned int _h,
Jan Möbius's avatar
   
Jan Möbius committed
419
420
421
			   GLenum /* _buffer */ )
{
  makeCurrent();
Jan Möbius's avatar
Jan Möbius committed
422
  _image = glWidget_->grabFrameBuffer(true).copy (_l, _t, _w, _h).convertToFormat (QImage::Format_RGB32);
Jan Möbius's avatar
   
Jan Möbius committed
423
424
425
426
427
428
}


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


Jan Möbius's avatar
   
Jan Möbius committed
429
void glViewer::updateGL()
Jan Möbius's avatar
   
Jan Möbius committed
430
{
Jan Möbius's avatar
   
Jan Möbius committed
431
  if (!properties_.updateLocked() && isVisible() )
Jan Möbius's avatar
   
Jan Möbius committed
432
  {
Jan Möbius's avatar
   
Jan Möbius committed
433
    update();
434
435

    emit viewUpdated();
Jan Möbius's avatar
   
Jan Möbius committed
436
437
438
439
440
441
442
443
  }
}



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


Jan Möbius's avatar
   
Jan Möbius committed
444
void glViewer::drawScene()
Jan Möbius's avatar
   
Jan Möbius committed
445
446
447
448
449
{
  QTime  timer;
  timer.start();


Jan Möbius's avatar
   
Jan Möbius committed
450
451
452
453
  // *****************************************************************
  // Adjust clipping planes
  // *****************************************************************
  // Far plane
Jan Möbius's avatar
   
Jan Möbius committed
454
  ACG::Vec3d c = glstate_->modelview().transform_point(scene_center_);
Jan Möbius's avatar
   
Jan Möbius committed
455
456

  // Set far plane
Jan Möbius's avatar
   
Jan Möbius committed
457
  far_    = std::max(0.0002f * scene_radius_,  -(c[2] - scene_radius_));
Jan Möbius's avatar
   
Jan Möbius committed
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474

  // 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
475
476
477
478
479
480
481
482
483
484
485
486
  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
487
488


Jan Möbius's avatar
   
Jan Möbius committed
489
490
491
492
493
494
}


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


Jan Möbius's avatar
   
Jan Möbius committed
495
void glViewer::drawScene_mono()
Jan Möbius's avatar
   
Jan Möbius committed
496
497
498
{
  if (sceneGraphRoot_)
  {
499
    if (! properties_.renderPicking() ) {
500
501
      ACG::SceneGraph::DrawAction action( properties_.drawMode() , false);
      ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, properties_.drawMode() );
Jan Möbius's avatar
   
Jan Möbius committed
502
503
504

      if( blending_ )
      {
505
506
        ACG::SceneGraph::DrawAction action(properties_.drawMode(), true);
        ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, properties_.drawMode());
Jan Möbius's avatar
   
Jan Möbius committed
507
508
509
510
511
512
513
514
515
516
517
518
      }
    } else {

      // prepare GL state
      makeCurrent();

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

      // do the picking
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
519
      glstate_->pick_init (true);
Jan Möbius's avatar
Jan Möbius committed
520
521
      ACG::SceneGraph::PickAction action(*glstate_, properties_.renderPickingMode(), properties_.drawMode());
      ACG::SceneGraph::traverse(sceneGraphRoot_, action);
Jan Möbius's avatar
   
Jan Möbius committed
522
523
524
525

      glEnable(GL_LIGHTING);
    }
  }
Jan Möbius's avatar
Jan Möbius committed
526
527

  draw_lights();
Jan Möbius's avatar
   
Jan Möbius committed
528
529
530
531
532
533
534
}


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


void
Jan Möbius's avatar
   
Jan Möbius committed
535
glViewer::drawScene_stereo()
Jan Möbius's avatar
   
Jan Möbius committed
536
{
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
537
538
539
540
541
542
543
544
545
546
547
548
549
  if (OpenFlipper::Options::stereoMode () == OpenFlipper::Options::OpenGL && OpenFlipper::Options::glStereo ())
  {
    drawScene_glStereo ();
    return;
  }
  else if (OpenFlipper::Options::stereoMode () == OpenFlipper::Options::AnaglyphCustom && customAnaglyphSupported_)
  {
    drawScene_customAnaglyphStereo ();

    // if somthing went wrong, fallback to normal anaglyph
    if (customAnaglyphSupported_)
      return;
  }
Jan Möbius's avatar
   
Jan Möbius committed
550

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
551
552
  drawScene_anaglyphStereo ();
}
Jan Möbius's avatar
   
Jan Möbius committed
553
554
555
556
557


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


Jan Möbius's avatar
   
Jan Möbius committed
558
void glViewer::setHome()
Jan Möbius's avatar
   
Jan Möbius committed
559
560
561
562
563
564
565
566
567
{
  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
568
void glViewer::home()
Jan Möbius's avatar
   
Jan Möbius committed
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
{
  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
584
void glViewer::viewAll()
Jan Möbius's avatar
   
Jan Möbius committed
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
{
  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
604
void glViewer::flyTo(const QPoint& _pos, bool _move_back)
Jan Möbius's avatar
   
Jan Möbius committed
605
606
607
608
609
610
611
612
613
614
{
  makeCurrent();

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

  if (pick( ACG::SceneGraph::PICK_ANYTHING, _pos, nodeIdx, targetIdx, &hitPoint))
  {
    if (projectionMode_ == PERSPECTIVE_PROJECTION)
    {
615
      ACG::Vec3d eye(glstate_->eye());
Jan Möbius's avatar
   
Jan Möbius committed
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
      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
638

Jan Möbius's avatar
   
Jan Möbius committed
639
640
641
642
  }
}


Jan Möbius's avatar
   
Jan Möbius committed
643
void glViewer::flyTo(const ACG::Vec3d&  _position,
Jan Möbius's avatar
   
Jan Möbius committed
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
			 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
690
691
      update();
      qApp->processEvents();
Jan Möbius's avatar
   
Jan Möbius committed
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
    }
  }


  // 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
716
void glViewer::setView(const ACG::GLMatrixd& _modelview,
Jan Möbius's avatar
   
Jan Möbius committed
717
718
719
720
721
722
723
724
725
726
727
			                  const ACG::GLMatrixd& _inverse_modelview)
{
  makeCurrent();
  glstate_->set_modelview(_modelview, _inverse_modelview);
  updateGL();
}


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


Jan Möbius's avatar
   
Jan Möbius committed
728
void glViewer::initializeGL()
Jan Möbius's avatar
   
Jan Möbius committed
729
730
731
{

  // lock update
732
  properties_.lockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
733
734
735
736
737
738
739
740
741
742
743
744
745
746

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

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


  projectionMode(   projectionMode_   );
  normalsMode(      normalsMode_      );

747
  // Update all settings which would require a redraw
748
  applyProperties();
Jan Möbius's avatar
   
Jan Möbius committed
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

  // 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)
778
  properties_.unLockUpdate();
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
779
780
781
782
783

  customAnaglyphSupported_ = glewIsSupported("GL_ARB_fragment_program") &&
      (glewIsSupported("GL_ARB_texture_rectangle") ||
       glewIsSupported("GL_EXT_texture_rectangle") ||
       glewIsSupported("GL_NV_texture_rectangle"));
Jan Möbius's avatar
   
Jan Möbius committed
784
785
786
787
788
}


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

Jan Möbius's avatar
Jan Möbius committed
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
/**
 *
 */
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
825

Jan Möbius's avatar
   
Jan Möbius committed
826
void glViewer::update_lights()
Jan Möbius's avatar
   
Jan Möbius committed
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
{
  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
859
void glViewer::rotate_lights(ACG::Vec3d& _axis, double _angle)
Jan Möbius's avatar
   
Jan Möbius committed
860
861
862
863
864
865
866
867
868
{
  light_matrix_.rotate(_angle, _axis[0], _axis[1], _axis[2], ACG::MULT_FROM_LEFT);
  update_lights();
}


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


Jan Möbius's avatar
   
Jan Möbius committed
869
void glViewer::paintGL()
Jan Möbius's avatar
   
Jan Möbius committed
870
871
872
873
874
{
  static bool initialized = false;
  if (!initialized)
  {
    // lock update
875
    properties_.lockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
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

    // 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)
903
    properties_.unLockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
904
905
906
907

    initialized = true;
  }

908
  if (!properties_.updateLocked())
Jan Möbius's avatar
   
Jan Möbius committed
909
  {
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
910
911
    ACG::Vec4f clear_color;

912
    properties_.lockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929

    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_      );

930
    applyProperties();
931

Jan Möbius's avatar
   
Jan Möbius committed
932
933
934
935
936
937
938
    // light sources
    update_lights();

    glstate_->setState ();

    glColor4f(1.0,0.0,0.0,1.0);

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
939
940
941
942
943
944
    if (properties_.renderPicking())
    {
      clear_color = properties_.glState().clear_color();
      properties_.glState().set_clear_color (ACG::Vec4f (0.0, 0.0, 0.0, 1.0));
    }

Jan Möbius's avatar
   
Jan Möbius committed
945
946
    // clear (stereo mode clears buffers on its own)
    if (!stereo_)
Jan Möbius's avatar
   
Jan Möbius committed
947
      glstate_->clearBuffers ();
Jan Möbius's avatar
   
Jan Möbius committed
948

949
    properties_.unLockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
950
951
952
953
954
955
956
957
958
959

    // draw scene
    drawScene();

    glPopMatrix();

    glMatrixMode(GL_PROJECTION);
    glPopMatrix();

    glPopAttrib ();
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
960
961
962

    if (properties_.renderPicking())
      properties_.glState().set_clear_color (clear_color);
Jan Möbius's avatar
   
Jan Möbius committed
963
964
965
966
967
968
969
  }
}


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


Jan Möbius's avatar
   
Jan Möbius committed
970
void glViewer::resizeEvent(QGraphicsSceneResizeEvent *)
Jan Möbius's avatar
   
Jan Möbius committed
971
972
{
  updateProjectionMatrix();
Jan Möbius's avatar
   
Jan Möbius committed
973
974
975
976
977
  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
978
979
}

Jan Möbius's avatar
   
Jan Möbius committed
980
981
982
983
984
985
986
987
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
988
989
990

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

Jan Möbius's avatar
   
Jan Möbius committed
991
void glViewer::encodeView(QString& _view)
Jan Möbius's avatar
   
Jan Möbius committed
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
{
  const ACG::GLMatrixd m = glstate_->modelview();
  const ACG::GLMatrixd