QtBaseViewer.cc 62.2 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
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  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 with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  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 LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision$                                                         *
 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/
Jan Möbius's avatar
   
Jan Möbius committed
42
43
44
45
46
47




//=============================================================================
//
Jan Möbius's avatar
   
Jan Möbius committed
48
//  CLASS glViewer - IMPLEMENTATION
Jan Möbius's avatar
   
Jan Möbius committed
49
50
51
52
53
54
55
//
//=============================================================================


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

#include "QtBaseViewer.hh"
Jan Möbius's avatar
Jan Möbius committed
56
#include "QtGLViewerLayout.hh"
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
57
#include "CursorPainter.hh"
Jan Möbius's avatar
   
Jan Möbius committed
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
#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 <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>

98
99
#include <QGraphicsView>
#include <QGraphicsScene>
Jan Möbius's avatar
   
Jan Möbius committed
100
101
102
#include <QGraphicsWidget>
#include <QGraphicsGridLayout>
#include <QGraphicsProxyWidget>
Jan Möbius's avatar
   
Jan Möbius committed
103
104
#include <QPainter>
#include <QPaintEngine>
Jan Möbius's avatar
   
Jan Möbius committed
105
106
107
108
109
110
111
112
113

#ifdef max
#  undef max
#endif

#ifdef min
#  undef min
#endif

114
#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
Jan Möbius's avatar
Jan Möbius committed
115
#include <OpenFlipper/common/ViewObjectMarker.hh>
Jan Möbius's avatar
   
Jan Möbius committed
116

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
117
118
#include <OpenFlipper/common/GlobalOptions.hh>

119
120
#include <QGLFramebufferObject>

Jan Möbius's avatar
   
Jan Möbius committed
121
122
123
124
125
126
127
128
129
130
131
132
//== NAMESPACES ===============================================================



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

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

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


133
glViewer::glViewer( QGraphicsScene* _scene,
134
                    QGLWidget* _glWidget,
135
                    Viewer::ViewerProperties& _properties,
136
                    QGraphicsWidget* _parent) :
Jan Möbius's avatar
   
Jan Möbius committed
137
  QGraphicsWidget(_parent),
Jan Möbius's avatar
   
Jan Möbius committed
138
139
140
  glareaGrabbed_(false),
  projectionUpdateLocked_(false),
  blending_(true),
Jan Möbius's avatar
   
Jan Möbius committed
141
142
  glScene_(_scene),
  glWidget_(_glWidget),
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
143
144
  cursorPainter_(0),
  cursorPositionValid_(false),
Jan Möbius's avatar
Jan Möbius committed
145
146
147
  pickCache_(0),
  updatePickCache_(true),
  pickCacheSupported_(true),
148
  clickEvent_(QEvent::MouseButtonPress, QPoint (), Qt::NoButton, Qt::NoButton, Qt::NoModifier),
Dirk Wilden's avatar
Dirk Wilden committed
149
  properties_(_properties),
150
151
  glstate_(0),
  initialized_(false)
Jan Möbius's avatar
   
Jan Möbius committed
152
153
154
{

  // widget stuff
155
  createWidgets();
Jan Möbius's avatar
   
Jan Möbius committed
156
157
158

  // bind GL context to GL state class
  glstate_ = new ACG::GLState();
159
160
  properties_.setglState( glstate_ );

Jan Möbius's avatar
   
Jan Möbius committed
161
162
163
  // state
  orthoWidth_       = 2.0;
  isRotating_       = false;
Mike Kremer's avatar
Mike Kremer committed
164
  lookAround_       = false;
Jan Möbius's avatar
   
Jan Möbius committed
165
166
167
168
169
170
171
172
  near_             = 0.1;
  far_              = 100.0;
  fovy_             = 45.0;

  sceneGraphRoot_   = 0;

  normalsMode_      = DONT_TOUCH_NORMALS;
  projectionMode_   = PERSPECTIVE_PROJECTION;
Jan Möbius's avatar
Jan Möbius committed
173
  navigationMode_   = NORMAL_NAVIGATION;
174

Jan Möbius's avatar
   
Jan Möbius committed
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194

  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 ();

195
196
197
198
199
200
201
  // timer for animation
  timer_ = new QTimer( this );
  connect( timer_, SIGNAL(timeout()), this, SLOT( slotAnimation()) );

  allowRotation_ = true;


Jan Möbius's avatar
   
Jan Möbius committed
202
203
204
  connect( &properties_,SIGNAL(updated()), this, SLOT( slotPropertiesUpdated() ) );


Dirk Wilden's avatar
Dirk Wilden committed
205
206
207
  //check for updated properties once
  slotPropertiesUpdated();

Jan Möbius's avatar
   
Jan Möbius committed
208
  setAcceptDrops(true);
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
209

210
  setHome();
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
211
212
213
214
215
216
217
218

  // initialize custom anaglyph stereo
  agTexWidth_ = 0;
  agTexHeight_ = 0;
  agTexture_[0] = 0;
  agTexture_[1] = 0;
  agProgram_ = 0;
  customAnaglyphSupported_ = false;
219
220
221

  clickTimer_.setSingleShot (true);
  connect (&clickTimer_, SIGNAL(timeout ()), this, SLOT(slotClickTimeout ()));
Jan Möbius's avatar
   
Jan Möbius committed
222
223
224
225
226
227
}


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


Jan Möbius's avatar
   
Jan Möbius committed
228
glViewer::~glViewer()
Jan Möbius's avatar
   
Jan Möbius committed
229
{
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
230
  finiCustomAnaglyphStereo ();
Jan Möbius's avatar
   
Jan Möbius committed
231
232
233
234
235
236
237
238
  delete glstate_;
}


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


QSize
Jan Möbius's avatar
   
Jan Möbius committed
239
glViewer::sizeHint() const
Jan Möbius's avatar
   
Jan Möbius committed
240
241
242
243
244
245
246
{
  return QSize( 600, 600 );
}

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


Jan Möbius's avatar
   
Jan Möbius committed
247
void glViewer::makeCurrent() {
Jan Möbius's avatar
   
Jan Möbius committed
248
249
250
  glWidget_->makeCurrent();
}

Jan Möbius's avatar
   
Jan Möbius committed
251
void glViewer::swapBuffers() {
Jan Möbius's avatar
   
Jan Möbius committed
252
253
254
255
256
257
258
  glWidget_->swapBuffers();
}


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


259
void glViewer::sceneGraph(ACG::SceneGraph::BaseNode* _root, const bool _resetTrackBall)
Jan Möbius's avatar
   
Jan Möbius committed
260
261
262
{
  sceneGraphRoot_ = _root;

Jan Möbius's avatar
Jan Möbius committed
263
  if (sceneGraphRoot_ )
Jan Möbius's avatar
   
Jan Möbius committed
264
265
266
267
268
269
270
271
272
273
  {
    // 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] ) ||
274
         ( bbmin[2] > bbmax[2] )   )
275
      setScenePos( ACG::Vec3d( 0.0,0.0,0.0 ) , 1.0, _resetTrackBall );
276
277
    else
      setScenePos( ( bbmin + bbmax )        * 0.5,
278
                   ( bbmax - bbmin ).norm() * 0.5,
279
                   _resetTrackBall);
Jan Möbius's avatar
   
Jan Möbius committed
280
281
282
283
284
285
286
287
288
289
290
  }

  updateGL();

  emit(signalSceneGraphChanged(sceneGraphRoot_));
}


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


Jan Möbius's avatar
   
Jan Möbius committed
291
void glViewer::trackMouse(bool _track)
Jan Möbius's avatar
   
Jan Möbius committed
292
293
294
295
296
297
298
{
  trackMouse_ = _track;
}


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

Jan Möbius's avatar
   
Jan Möbius committed
299
void glViewer::perspectiveProjection()
Jan Möbius's avatar
   
Jan Möbius committed
300
301
302
303
304
305
{
  projectionMode(PERSPECTIVE_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
306
void glViewer::orthographicProjection()
Jan Möbius's avatar
   
Jan Möbius committed
307
308
309
310
311
312
{
  projectionMode(ORTHOGRAPHIC_PROJECTION);
  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
313
void glViewer::toggleProjectionMode()
Jan Möbius's avatar
   
Jan Möbius committed
314
315
316
317
318
319
320
321
322
323
{
  if (projectionMode_ == ORTHOGRAPHIC_PROJECTION)
    projectionMode(PERSPECTIVE_PROJECTION);
  else
    projectionMode(ORTHOGRAPHIC_PROJECTION);

  updateGL();
}


Jan Möbius's avatar
   
Jan Möbius committed
324
void glViewer::projectionMode(ProjectionMode _p)
Jan Möbius's avatar
   
Jan Möbius committed
325
326
{
  if ((projectionMode_ = _p) == ORTHOGRAPHIC_PROJECTION)
327
    emit projectionModeChanged( true );
Jan Möbius's avatar
   
Jan Möbius committed
328
  else
329
    emit projectionModeChanged( false );
Jan Möbius's avatar
   
Jan Möbius committed
330
331

  updateProjectionMatrix();
332

333
  emit viewChanged();
Jan Möbius's avatar
   
Jan Möbius committed
334
335
}

336
337
338
void glViewer::toggleNavigationMode()
{
  if (navigationMode_ == NORMAL_NAVIGATION)
Mike Kremer's avatar
Mike Kremer committed
339
    navigationMode(FIRSTPERSON_NAVIGATION);
340
341
342
343
344
345
346
347
348
349
350
351
352
  else
    navigationMode(NORMAL_NAVIGATION);
}


void glViewer::navigationMode(NavigationMode _n)
{
  if ((navigationMode_ = _n) == NORMAL_NAVIGATION)
    emit navigationModeChanged( true );
  else
    emit navigationModeChanged( false );
}

Jan Möbius's avatar
   
Jan Möbius committed
353

Jan Möbius's avatar
   
Jan Möbius committed
354
void glViewer::updateProjectionMatrix()
Jan Möbius's avatar
   
Jan Möbius committed
355
356
357
358
359
360
361
362
{
  if( projectionUpdateLocked_ )
    return;

  makeCurrent();

  glstate_->reset_projection();

Jan Möbius's avatar
Jan Möbius committed
363
364
  // In scereo mode we have to use a perspective matrix
  if (stereo_ || projectionMode_ == PERSPECTIVE_PROJECTION)
Jan Möbius's avatar
   
Jan Möbius committed
365
  {
366
367
368
369
370
371
372
373
    double aspect;

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

    glstate_->perspective(fovy_, (GLdouble) aspect,
Jan Möbius's avatar
Jan Möbius committed
374
375
376
377
378
                          near_, far_);
  }
  else
  {
    double aspect;
Jan Möbius's avatar
Jan Möbius committed
379

380
    if (isVisible() && glWidth() && glHeight())
Jan Möbius's avatar
Jan Möbius committed
381
382
      aspect = (double) glWidth() / (double) glHeight();
    else
383
      aspect = 1.0;
Jan Möbius's avatar
   
Jan Möbius committed
384

Jan Möbius's avatar
Jan Möbius committed
385
386
387
    glstate_->ortho( -orthoWidth_, orthoWidth_,
                     -orthoWidth_/aspect, orthoWidth_/aspect,
                     near_, far_ );
Jan Möbius's avatar
   
Jan Möbius committed
388
  }
389

Jan Möbius's avatar
   
Jan Möbius committed
390
391
392
393
394
395
}


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


396
void glViewer::setScenePos(const ACG::Vec3d& _center, double _radius, const bool _resetTrackBall)
Jan Möbius's avatar
   
Jan Möbius committed
397
{
398
399
  if(_resetTrackBall) {
    trackball_center_ = _center;
400
401
  }

402
403
  scene_center_ = _center;

404
405
406
407
408
409
  scene_radius_ = trackball_radius_ = _radius;

  ACG::Vec3d c = glstate_->modelview().transform_point(scene_center_);

  // Set far plane
  far_    = std::max(0.0002f * scene_radius_,  -(c[2] - scene_radius_));
Jan Möbius's avatar
   
Jan Möbius committed
410

411
412
  // Set near plane
  near_   = std::max(0.0001f * scene_radius_,  -(c[2] + scene_radius_));
Jan Möbius's avatar
   
Jan Möbius committed
413

414

415
416
417
418
  updateProjectionMatrix();
  updateGL();

  emit viewChanged();
419
420
}

421
422
423
424
425
426
//-----------------------------------------------------------------------------

void glViewer::setSceneCenter( const ACG::Vec3d& _center ) {

	scene_center_ = trackball_center_ = _center;
}
427
428
429
430

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


Jan Möbius's avatar
   
Jan Möbius committed
431
void glViewer::viewingDirection( const ACG::Vec3d& _dir, const ACG::Vec3d& _up )
Jan Möbius's avatar
   
Jan Möbius committed
432
433
434
435
436
437
{
  // 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);
438

439
  emit viewChanged();
Jan Möbius's avatar
   
Jan Möbius committed
440
441
442
443
444
445
}


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


Jan Möbius's avatar
   
Jan Möbius committed
446
void glViewer::normalsMode(NormalsMode _mode)
Jan Möbius's avatar
   
Jan Möbius committed
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
{
  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
469
glViewer::copyToImage( QImage& _image,
Jan Möbius's avatar
Jan Möbius committed
470
471
		       unsigned int _l, unsigned int _t,
		       unsigned int _w, unsigned int _h,
Jan Möbius's avatar
   
Jan Möbius committed
472
473
			   GLenum /* _buffer */ )
{
474
475
476
477

//    qApp->processEvents();
//    makeCurrent();

Jan Möbius's avatar
Jan Möbius committed
478
  _image = glWidget_->grabFrameBuffer(true).copy (_l, _t, _w, _h).convertToFormat (QImage::Format_RGB32);
Jan Möbius's avatar
   
Jan Möbius committed
479
480
481
482
483
484
}


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


Jan Möbius's avatar
   
Jan Möbius committed
485
void glViewer::updateGL()
Jan Möbius's avatar
   
Jan Möbius committed
486
{
Jan Möbius's avatar
   
Jan Möbius committed
487
  if (!properties_.updateLocked() && isVisible() )
Jan Möbius's avatar
   
Jan Möbius committed
488
  {
Jan Möbius's avatar
Jan Möbius committed
489
    updatePickCache_ = true;
Jan Möbius's avatar
   
Jan Möbius committed
490
    update();
491
492

    emit viewUpdated();
Jan Möbius's avatar
   
Jan Möbius committed
493
494
495
496
497
498
499
500
  }
}



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


Jan Möbius's avatar
   
Jan Möbius committed
501
void glViewer::drawScene()
Jan Möbius's avatar
   
Jan Möbius committed
502
503
504
505
506
{
  QTime  timer;
  timer.start();


Jan Möbius's avatar
   
Jan Möbius committed
507
508
509
510
  // *****************************************************************
  // Adjust clipping planes
  // *****************************************************************
  // Far plane
Jan Möbius's avatar
   
Jan Möbius committed
511
  ACG::Vec3d c = glstate_->modelview().transform_point(scene_center_);
Jan Möbius's avatar
   
Jan Möbius committed
512
513

  // Set far plane
Jan Möbius's avatar
   
Jan Möbius committed
514
  far_    = std::max(0.0002f * scene_radius_,  -(c[2] - scene_radius_));
Jan Möbius's avatar
   
Jan Möbius committed
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531

  // 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
532
533
534
535
536
537
538
539
540
541
542
543
  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
544
545


Jan Möbius's avatar
   
Jan Möbius committed
546
547
548
549
550
551
}


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


Jan Möbius's avatar
   
Jan Möbius committed
552
void glViewer::drawScene_mono()
Jan Möbius's avatar
   
Jan Möbius committed
553
554
555
{
  if (sceneGraphRoot_)
  {
556
    if (! properties_.renderPicking() ) {
557

Jan Möbius's avatar
Jan Möbius committed
558
      ViewObjectMarker *oM = properties_.objectMarker();
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
      GLuint refBits = 0;
      QSet<GLuint> references;

      if (oM)
      {
        glClear (GL_STENCIL_BUFFER_BIT);
        glEnable (GL_STENCIL_TEST);
        glStencilOp (GL_KEEP, GL_KEEP, GL_ZERO);
        glStencilFunc (GL_ALWAYS, 0, ~0);

        for (PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS, DATA_ALL) ;
                                             o_it != PluginFunctions::objectsEnd(); ++o_it)
        {
          bool ok;
          GLuint ref;

          ok = oM->stencilRefForObject(*o_it, ref);

          if (ok)
          {
            o_it->stencilRefNode ()->setReference (ref);
            o_it->stencilRefNode ()->show ();
            refBits |= ref;
            references << ref;
          }
          else
            o_it->stencilRefNode ()->hide ();
        }
      }

589
590
      ACG::SceneGraph::DrawAction action( properties_.drawMode() , false);
      ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, properties_.drawMode() );
Jan Möbius's avatar
   
Jan Möbius committed
591
592
593

      if( blending_ )
      {
594
595
        ACG::SceneGraph::DrawAction action(properties_.drawMode(), true);
        ACG::SceneGraph::traverse(sceneGraphRoot_, action, *glstate_, properties_.drawMode());
Jan Möbius's avatar
   
Jan Möbius committed
596
      }
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668

      if (oM)
      {
        if (oM->type() == ViewObjectMarker::PerBit)
        {
          references.clear ();
          for (unsigned int i = 0; i < sizeof (GLuint) * 8; i++)
            if (refBits & (1 << i))
              references << (1 << i);
        }

        glPushAttrib(GL_ALL_ATTRIB_BITS);

        glEnable(GL_BLEND);
        glDisable(GL_DEPTH_TEST);
        glDisable(GL_LIGHTING);
        glDisable(GL_DITHER);

        int vp_l, vp_b, vp_w, vp_h;
        glstate_->get_viewport (vp_l, vp_b, vp_w, vp_h);

        glMatrixMode(GL_PROJECTION);
        glPushMatrix ();
        glLoadIdentity();
        glOrtho(0, vp_w, vp_h, 0, 0, 1.0);
        glMatrixMode(GL_MODELVIEW);
        glPushMatrix ();
        glLoadIdentity();

        glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);

        foreach (unsigned int ref, references)
        {
          bool ok;
          GLenum sfactor;
          GLenum dfactor;
          ACG::Vec4f color;
          unsigned int mask = ~0;

          if (oM->type() == ViewObjectMarker::PerBit)
          {
            ok = oM->blendForStencilRefBit (ref, sfactor, dfactor, color);
            mask = ref;
          }
          else
            ok = oM->blendForStencilRefNumber (ref, sfactor, dfactor, color);

          if (!ok)
            continue;

          glStencilFunc (GL_EQUAL, ref, mask);

          glBlendFunc (sfactor, dfactor);
          glColor4f (color[0], color [1], color [2], color[3]);

          glBegin (GL_QUADS);
          glVertex2i(0, 0);
          glVertex2i(0, vp_h);
          glVertex2i(vp_w, vp_h);
          glVertex2i(vp_w, 0);
          glEnd ();

        }

        glMatrixMode(GL_PROJECTION);
        glPopMatrix ();
        glMatrixMode(GL_MODELVIEW);
        glPopMatrix ();

        glPopAttrib ();
        glDisable (GL_STENCIL_TEST);
      }
Jan Möbius's avatar
   
Jan Möbius committed
669
670
671
672
673
674
    } else {

      // prepare GL state
      makeCurrent();

      glDisable(GL_LIGHTING);
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
675
      glDisable(GL_BLEND);
Jan Möbius's avatar
   
Jan Möbius committed
676
677
678
679
680
      glClear(GL_DEPTH_BUFFER_BIT);
      glInitNames();
      glPushName((GLuint) 0);

      // do the picking
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
681
      glstate_->pick_init (true);
Jan Möbius's avatar
Jan Möbius committed
682
683
      ACG::SceneGraph::PickAction action(*glstate_, properties_.renderPickingMode(), properties_.drawMode());
      ACG::SceneGraph::traverse(sceneGraphRoot_, action);
Jan Möbius's avatar
   
Jan Möbius committed
684
685

      glEnable(GL_LIGHTING);
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
686
      glEnable(GL_BLEND);
Jan Möbius's avatar
   
Jan Möbius committed
687
688
    }
  }
Jan Möbius's avatar
Jan Möbius committed
689

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
690
691
692
693
694
695
696
697
698
699
700
701
  if (cursorPainter_ && cursorPainter_->enabled () && cursorPositionValid_)
  {
    glstate_->push_modelview_matrix ();
    // reset view transformation
    glstate_->reset_modelview ();
    // translate cursor position to 0,0
    glstate_->translate (cursorPoint3D_[0], cursorPoint3D_[1], cursorPoint3D_[2]);
    // paint cursor
    cursorPainter_->paintCursor (glstate_);
    glstate_->pop_modelview_matrix ();
  }

Jan Möbius's avatar
Jan Möbius committed
702
  draw_lights();
Jan Möbius's avatar
   
Jan Möbius committed
703
704
705
706
707
708
709
}


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


void
Jan Möbius's avatar
   
Jan Möbius committed
710
glViewer::drawScene_stereo()
Jan Möbius's avatar
   
Jan Möbius committed
711
{
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
712
713
714
715
716
717
718
719
720
721
722
723
724
  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
725

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
726
727
  drawScene_anaglyphStereo ();
}
Jan Möbius's avatar
   
Jan Möbius committed
728
729
730
731
732


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


Jan Möbius's avatar
   
Jan Möbius committed
733
void glViewer::setHome()
Jan Möbius's avatar
   
Jan Möbius committed
734
735
736
737
738
739
740
741
742
{
  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
743
void glViewer::home()
Jan Möbius's avatar
   
Jan Möbius committed
744
745
746
747
748
749
750
751
{
  makeCurrent();
  glstate_->set_modelview(home_modelview_, home_inverse_modelview_);
  orthoWidth_ = homeOrthoWidth_;
  trackball_center_ = home_center_;
  trackball_radius_ = home_radius_;
  updateProjectionMatrix();
  updateGL();
752

753
  emit viewChanged();
Jan Möbius's avatar
   
Jan Möbius committed
754
755
756
757
758
759
760

}


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


Jan Möbius's avatar
   
Jan Möbius committed
761
void glViewer::viewAll()
Jan Möbius's avatar
   
Jan Möbius committed
762
{
763
	makeCurrent();
Jan Möbius's avatar
   
Jan Möbius committed
764

765
766
	// update scene graph (get new bounding box and set projection right, including near and far plane)
	properties_.lockUpdate();
Jan Möbius's avatar
   
Jan Möbius committed
767

768
769
770
771
772
773
774
775
776
777
778
779
780
781
	// 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;

	sceneGraph(PluginFunctions::getSceneGraphRootNode(), true);

	properties_.unLockUpdate();
	updateProjectionMatrix();
	updateGL();
782
783

    emit viewChanged();
Jan Möbius's avatar
   
Jan Möbius committed
784
785
786
787
788
789
790

}


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


Jan Möbius's avatar
   
Jan Möbius committed
791
void glViewer::flyTo(const QPoint& _pos, bool _move_back)
Jan Möbius's avatar
   
Jan Möbius committed
792
793
794
795
796
797
798
799
800
801
{
  makeCurrent();

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

  if (pick( ACG::SceneGraph::PICK_ANYTHING, _pos, nodeIdx, targetIdx, &hitPoint))
  {
    if (projectionMode_ == PERSPECTIVE_PROJECTION)
    {
802
      ACG::Vec3d eye(glstate_->eye());
Jan Möbius's avatar
   
Jan Möbius committed
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
      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