QtBaseViewer.hh 35.2 KB
Newer Older
1
/*===========================================================================*\
Jan Möbius's avatar
Jan Möbius committed
2
3
*                                                                            *
*                              OpenFlipper                                   *
Jan Möbius's avatar
Jan Möbius committed
4
*      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen       *
Jan Möbius's avatar
Jan Möbius committed
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
*                           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/>.                                       *
*                                                                            *
33
34
35
\*===========================================================================*/

/*===========================================================================*\
Jan Möbius's avatar
Jan Möbius committed
36
37
38
39
40
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
*                                                                            *
41
\*===========================================================================*/
Jan Möbius's avatar
 
Jan Möbius committed
42
43
44
45
46
47




//=============================================================================
//
Jan Möbius's avatar
   
Jan Möbius committed
48
//  CLASS glViewer
Jan Möbius's avatar
 
Jan Möbius committed
49
50
51
//
//=============================================================================

Jan Möbius's avatar
Jan Möbius committed
52
53
#ifndef BASEVIEWER_HH
#define BASEVIEWER_HH
Jan Möbius's avatar
 
Jan Möbius committed
54
55
56

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

Jan Möbius's avatar
   
Jan Möbius committed
57
58
#include <OpenFlipper/common/Types.hh>
#include <OpenFlipper/common/ViewerProperties.hh>
Jan Möbius's avatar
 
Jan Möbius committed
59
60

#include <ACG/GL/GLState.hh>
Jan Möbius's avatar
Jan Möbius committed
61
#include <ACG/GL/FBO.hh>
Jan Möbius's avatar
 
Jan Möbius committed
62
63
64
#include <ACG/Scenegraph/SceneGraph.hh>
#include <ACG/QtWidgets/QtSceneGraphWidget.hh>

65
66
67
#include <ACG/ShaderUtils/GLSLShader.hh>
#include <ACG/GL/globjects.hh>

Matthias Möller's avatar
Matthias Möller committed
68
69
70
#undef QT_NO_OPENGL
#include <QGLFormat>
#define QT_NO_OPENGL
Jan Möbius's avatar
 
Jan Möbius committed
71
72
73
74
75
76
77
78
#include <QBoxLayout>
#include <QtNetwork/QUdpSocket>
#include <QWheelEvent>
#include <QDropEvent>
#include <QContextMenuEvent>
#include <QDragEnterEvent>
#include <QMouseEvent>
#include <QAction>
79
#include <QKeyEvent>
Jan Möbius's avatar
 
Jan Möbius committed
80
81
82
83
84
85
#include <QSize>
#include <QMap>
#include <QString>
#include <QMenu>
#include <QToolBar>
#include <QTime>
86
#include <QTimer>
Jan Möbius's avatar
   
Jan Möbius committed
87
88
#include <QGraphicsWidget>
#include <QGraphicsSceneDragDropEvent>
89
#include <QPropertyAnimation>
Jan Möbius's avatar
 
Jan Möbius committed
90
91
92
93
94
95
96
97
98
99
100
101
102
103

#include <vector>
#include <string>


//== FORWARDDECLARATIONS ======================================================


class QPushButton;
class QToolButton;
class QSplitter;
class QTimer;
class QImage;
class QSocketNotifier;
Jan Möbius's avatar
Jan Möbius committed
104
struct PostProcessorInput;
Jan Möbius's avatar
 
Jan Möbius committed
105
106
107
108
109
110
111
112
113
114
115


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

//== FORWARDDECLARATIONS ======================================================

namespace ACG {
  namespace QtWidgets {
    class QtWheel;
  }
}
116
class QGraphicsScene;
Jan Möbius's avatar
Jan Möbius committed
117
class QtGLViewerLayout;
Jan Möbius's avatar
 
Jan Möbius committed
118
class QtShiftPopupMenu;
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
119
class CursorPainter;
120
121
#if QT_VERSION < 0x050000
class QGLFramebufferObject;
122
class QGLFramebufferObjectFormat;
123
124
#else
class QOpenGLFramebufferObject;
125
class QOpenGLFramebufferObjectFormat;
126
#endif
Jan Möbius's avatar
 
Jan Möbius committed
127
128
129
130
131


//== CLASS DEFINITION =========================================================


Jan Möbius's avatar
Jan Möbius committed
132
/** \class glViewer QtBaseViewer.hh <OpenFlipper/widgets/glWidget/QtBaseViewer.hh>
Jan Möbius's avatar
 
Jan Möbius committed
133

Jan Möbius's avatar
Jan Möbius committed
134
135
    Base Viewer Widget: All viewers are derived from this one. Implements
    Mouse & Keyboard Events.
Jan Möbius's avatar
 
Jan Möbius committed
136
137
 **/

Jan Möbius's avatar
   
Jan Möbius committed
138
class DLLEXPORT glViewer : public QGraphicsWidget
Jan Möbius's avatar
 
Jan Möbius committed
139
140
141
142
143
144
145
146
{
Q_OBJECT

//-------------------------------------------------------------- public methods
public:

  //--------------------------------------------------- constructor / destructor

Jan Möbius's avatar
   
Jan Möbius committed
147
  /** Create a glViewer.
Jan Möbius's avatar
Jan Möbius committed
148
   *
Jan Möbius's avatar
Jan Möbius committed
149
   * @param _scene      The graphics scene that will be the parent of this widget
Jan Möbius's avatar
Jan Möbius committed
150
151
152
153
   * @param _glWidget   A pointer to the underlying gl widget
   * @param _properties viewerOptions controlled by PluginFunctions
   * @param _parent     The parent graphicswidget
   *
Jan Möbius's avatar
 
Jan Möbius committed
154
  */
Jan Möbius's avatar
Jan Möbius committed
155
156
  glViewer( QGraphicsScene*           _scene,
            QGLWidget*                _glWidget,
157
            Viewer::ViewerProperties& _properties,
Jan Möbius's avatar
Jan Möbius committed
158
            QGraphicsWidget*          _parent = 0 );
Jan Möbius's avatar
 
Jan Möbius committed
159
160

  /// Destructor.
Jan Möbius's avatar
   
Jan Möbius committed
161
  virtual ~glViewer();
Jan Möbius's avatar
 
Jan Möbius committed
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176

  //------------------------------------------------------------- public methods


  /// Makes this widget the current widget for OpenGL operations.
  virtual void makeCurrent();
  /// Swaps the screen contents with the off-screen buffer.
  virtual void swapBuffers();

  /// Lock update of projection matrix.
  void lockProjectionUpdate( void ) { projectionUpdateLocked_ = true; }

  /// Unlock update of projection matrix.
  void unlockProjectionUpdate( void ) { projectionUpdateLocked_ = false; }

177
178
  signals :
    void functionMenuUpdate();
Jan Möbius's avatar
 
Jan Möbius committed
179

180
181
    void statusMessage (const QString & message, int timeout = 0);

182
  public:
Jan Möbius's avatar
 
Jan Möbius committed
183

184
185
  /// Enable/disable mouse tracking (move events with no button press)
  void trackMouse(bool _track);
Jan Möbius's avatar
 
Jan Möbius committed
186
187
188

  /** Set scene graph.
      Sets the scene graph to the the graph rooted at \c _root.
189
      Recomputes Scene center and resets the trackball center if specified.
Jan Möbius's avatar
 
Jan Möbius committed
190
191
      The \c sceneGraphToched() signal will be emitted (even if
      \c _root does not actually change).
Jan Möbius's avatar
Jan Möbius committed
192
193
      Use the ACG::SceneGraph::analyzeSceneGraph() function to get the required
      bounding box and pass information.
Jan Möbius's avatar
Jan Möbius committed
194

Jan Möbius's avatar
Jan Möbius committed
195
196
197
198
      @param _root           The root node of the scene graph
      @param _maxPasses      The maximal number of passes required to render the scenegraph
      @param _bbmin          Lower left of the scenegraph bounding box
      @param _bbmax          Upper right of the scenegraph bounding box
Jan Möbius's avatar
Jan Möbius committed
199
      @param _resetTrackBall Reset the trackball center?
Jan Möbius's avatar
 
Jan Möbius committed
200
  */
Jan Möbius's avatar
Jan Möbius committed
201
202
203
204
205
  void sceneGraph(ACG::SceneGraph::BaseNode* _root,
                  unsigned int               _maxPasses,
                  ACG::Vec3d                 _bbmin,
                  ACG::Vec3d                 _bbmax,
                  const bool _resetTrackBall = false);
Jan Möbius's avatar
 
Jan Möbius committed
206
207
208
209
210
211
212

   /// projection mode
  enum ProjectionMode {
    ORTHOGRAPHIC_PROJECTION, //!< orthographic
    PERSPECTIVE_PROJECTION   //!< perspective
  };

213
214
215
  /// Navigation mode
  enum NavigationMode {
	  NORMAL_NAVIGATION, 	 //!< Normal mode
Mike Kremer's avatar
Mike Kremer committed
216
	  FIRSTPERSON_NAVIGATION  //!< First person mode
217
218
  };

Jan Möbius's avatar
 
Jan Möbius committed
219
220
221
222
223
  /// Changes the projection mode and updates the projection matrix.
  void projectionMode(ProjectionMode _p);
  /// get current projection mode
  ProjectionMode projectionMode() const { return projectionMode_; }

224
225
226
227
  /// Changes the navigation mode
  void navigationMode(NavigationMode _n);
  /// get current navigation mode
  NavigationMode navigationMode() const { return navigationMode_; }
Jan Möbius's avatar
 
Jan Möbius committed
228

229
230
  /** Sets the center and dimension of the whole scene.  This point is
      used as fixpoint for rotations and to set the eye point far
Jan Möbius's avatar
 
Jan Möbius committed
231
232
      enough from the scene so that the whole scene is visible.
    */
233
  void setScenePos( const ACG::Vec3d& _center, double _radius, const bool _resetTrackBall = false );
234

Jan Möbius's avatar
 
Jan Möbius committed
235
236
  /// set the viewing direction
  void viewingDirection( const ACG::Vec3d& _dir, const ACG::Vec3d& _up );
237
238
239
  
  /// Set look at transformation directly
  void lookAt(const ACG::Vec3d& _eye, const ACG::Vec3d& _center, const ACG::Vec3d& _up);
240
  
Jan Möbius's avatar
 
Jan Möbius committed
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
  /// Automatically normalize normals?
  enum NormalsMode {
    /// use provided normals as is
    DONT_TOUCH_NORMALS,
    /** Automatically normalize normals.
        Input normals are not normalized \a or the transformation matrix
	does scaling or shearing.
     */
    NORMALIZE_NORMALS
  };

  /// set treatment of normals
  void normalsMode(NormalsMode _mode);
  /// get treatment of normals
  NormalsMode normalsMode() const { return normalsMode_; }

  /// copy current framebuffer to an QImage
  void copyToImage( QImage& _image, GLenum _buffer=GL_BACK) {
    copyToImage(_image, 0, 0, glWidth(), glHeight(), _buffer);
  }

  /// copy current framebuffer to an QImage
  void copyToImage( QImage& _image,
		    unsigned int _left,  unsigned int _top,
		    unsigned int _width, unsigned int _height,
		    GLenum _buffer );


  /// get width of QGLWidget
  unsigned int glWidth() const;
  /// get height of QGLWidget
  unsigned int glHeight() const;
  /// get size of QGLWIdget
  QSize glSize() const;
  /// map global to glarea coords
  QPoint glMapFromGlobal( const QPoint& _pos ) const;
  /// map glarea coords to global coords
  QPoint glMapToGlobal( const QPoint& _pos ) const;

280
281
  /** convert current view to text representation
      if saved, the old window size will be written into _windowSize
282
      \note QSize(0,0) indicates that the window is maximized.
283
   */
284
  void encodeView(QString& _view, const QSize& _windowSize = QSize(-1,-1), const int _toolBarWidth = -1);
Jan Möbius's avatar
 
Jan Möbius committed
285
286
287
  /** Decode and apply text representation of view encoded by encodeView().
      If \c _view was successfully decoded it will immediately be applied
      and \c true is returned, \c false is returned else.
288

Matthias Möller's avatar
Matthias Möller committed
289
290
      You can save the current Window size via parameter _windowSize and one splitter size via _splitterwidth
      These values will not be applied immediately.
291
      \note QSize(0,0) indicates that the window was maximized.
292
      \note _splitterWidth is -1 if no splitterWidth was saved
Jan Möbius's avatar
 
Jan Möbius committed
293
   */
294
  bool decodeView(const QString& _view, QSize *_windowSize = NULL, int* _toolBarWidth = NULL);
Jan Möbius's avatar
 
Jan Möbius committed
295
296
297
298

  /// initialize modelview matrix to identity
  void initModelviewMatrix();

Jan Möbius's avatar
Jan Möbius committed
299
  /// get all Mouse & Key Events for GlWidget
Jan Möbius's avatar
 
Jan Möbius committed
300
301
  void grabGLArea();

Jan Möbius's avatar
Jan Möbius committed
302
  /// undo grabbing GLArea
Jan Möbius's avatar
 
Jan Möbius committed
303
304
305
306
307
308
309
  void releaseGLArea();

  /// translate the scene and update modelview matrix
  void translate(const ACG::Vec3d& trans);

  /// rotate the scene (around its center) and update modelview matrix
  void rotate(const ACG::Vec3d& axis, double angle)
310
  { rotate(axis, angle, properties_.trackballCenter()); }
Jan Möbius's avatar
 
Jan Möbius committed
311
312
313
314

  /// rotate the scene and update modelview matrix
  void rotate(const ACG::Vec3d& axis, double angle, const ACG::Vec3d& _center);

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
315
316
317
318
319
320
  /// sets the current cursor painter
  void setCursorPainter (CursorPainter *_cursorPainter);

  /// will be called from CursorPainter to inform the viewer that the cursor position changed
  void updateCursorPosition (QPointF _scenePos);

Mike Kremer's avatar
Mike Kremer committed
321
322
323
324
325
326
327
328
329
330
331
332
  /// First person navigation: Move forward
  void moveForward();

  /// First person navigation: Move back
  void moveBack();

  /// First person navigation: Strafe left
  void strafeLeft();

  /// First person navigation: Strafe Right
  void strafeRight();

Jan Möbius's avatar
 
Jan Möbius committed
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
//---------------------------------------------------------------- public slots
public slots:

  /// Redraw scene. Triggers paint event for updating the view (cf. drawNow()).
  virtual void updateGL();

  /// set home position
  virtual void setHome();
  /// go to home pos
  virtual void home();
  /// view the whole scene
  virtual void viewAll();

  /// set perspective view (projectionMode(PERSPECTIVE_PROJECTION))
  virtual void perspectiveProjection();
  /// set orthographic view (projectionMode(ORTHOGRAPHIC_PROJECTION))
  virtual void orthographicProjection();
  /// toggle projection mode
  virtual void toggleProjectionMode();
352
353
  /// toggle navigation mode
  virtual void toggleNavigationMode();
354
355
356
  
  /// Set fovy
  virtual void setFOVY(double _fovy);
Jan Möbius's avatar
 
Jan Möbius committed
357

358
359
360
  signals:

    void projectionModeChanged( bool _ortho );
361
    void navigationModeChanged( bool _normal );
362
363

  public slots:
Jan Möbius's avatar
 
Jan Möbius committed
364
365
366
367
368

  /// set view, used for synchronizing
  virtual void setView( const ACG::GLMatrixd& _modelview,
			               const ACG::GLMatrixd& _inverse_modelview );

369
  /** you get the older window size (if saved) back
370
      \note QSize(0,0) indicates that the window is maximized.
371
      \note _splitterWidth is -1 if no splitterWidth was saved
372
   */
373
  void actionPasteView(QSize * _windowSize = NULL, int *_splitterWidth = NULL);
374
375
376
  /** if you want to save the windowSize, use the parameter
      \note QSize(0,0) indicates that the window is maximized
   */
377
  void actionCopyView(const QSize &_windowSize = QSize(-1,-1), const int _splitterWidth = -1);
378

379
380
  void actionSetView(QString view);

Jan Möbius's avatar
 
Jan Möbius committed
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
//-------------------------------------------------------------- public signals
signals:

  /** A signal for giving mouse events to the application.
      This is done if the Pick-Button (top-most button of the toolbar)
      is activated. Connect to this signal to implement application
      specific handling of mouse events.<br>
      \a Notes:
      \arg You have to test for the QMouseEvent::type() of the
      event yourself (press/release/move)!
      \arg signalMouseEventIdentify() is emitted on button press if
      actionMode()==Question.
  */
  void signalMouseEvent(QMouseEvent*, const std::string&);

  /// This signal does not send the pick mode and is kept for compatibility
  void signalMouseEvent(QMouseEvent*);

  /// Emitted in Pick mode. Uses pick mode.
  void signalWheelEvent(QWheelEvent*, const std::string&);

Jan Möbius's avatar
Mike:    
Jan Möbius committed
402
  /** Emitted instead of signalMouseEvent() if actionMode()==Question
Jan Möbius's avatar
 
Jan Möbius committed
403
404
405
      and \c _event is a mouse press event.
   */
  void signalMouseEventIdentify( QMouseEvent* );
Jan Möbius's avatar
Mike:    
Jan Möbius committed
406
407
408
409
410
  
  /** Emitted instead of signalMouseEvent() if actionMode()==Light
      and \c _event is a mouse press event.
   */
  void signalMouseEventLight( QMouseEvent* );
Jan Möbius's avatar
 
Jan Möbius committed
411
412
413

  /// scene graph has changed
  void signalSceneGraphChanged(ACG::SceneGraph::BaseNode* _root);
414

415
416
417
418
  /** Emitted if a (double) mouse click is performed in actionMode()==ExamineMode
   */
  void signalMouseEventClick ( QMouseEvent*, bool _double );

Jan Möbius's avatar
 
Jan Möbius committed
419
420
421
422
423
424
425
426
427

  signals:

  /** If popups are disabled context menu mode is set to custom Menu and the signal is passed
   * from the QGLWidget to this signal. You can use mapToGlobal for mapping this point to
   * global coords.
   */
  void signalCustomContextMenuRequested ( const QPoint & );

428
429
430
431
432
  private slots:

  /// Handle click timeout
  void slotClickTimeout ();

Jan Möbius's avatar
 
Jan Möbius committed
433
434
435
436
437

//----------------------------------------------------------- protected methods
protected:

  friend class QtGLGraphicsScene;
Jan Möbius's avatar
Jan Möbius committed
438
  friend class SimpleGLGraphicsScene;
Jan Möbius's avatar
 
Jan Möbius committed
439
440
  friend class QtGLGraphicsView;

441
442

  /// Return a resonable size hint
443
  //virtual QSizeF sizeHint (Qt::SizeHint which, const QSizeF & constraint) const;
444

Jan Möbius's avatar
 
Jan Möbius committed
445
446
447
448
449
  /// initialize OpenGL states
  virtual void initializeGL();
  /// draw the scene. Triggered by updateGL().
  virtual void paintGL();
  /// handle resize events
Jan Möbius's avatar
   
Jan Möbius committed
450
451
452
  virtual void resizeEvent(QGraphicsSceneResizeEvent * _e);
  /// handle move events
  virtual void moveEvent (QGraphicsSceneMoveEvent * _e);
Jan Möbius's avatar
 
Jan Möbius committed
453
454

  /// handle mouse press events
455
  virtual void mousePressEvent(QGraphicsSceneMouseEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
456
  /// handle mouse double click events
457
  virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
458
  /// handle mouse move events
459
  virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
460
  /// handle mouse release events
461
  virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
462
  /// handle mouse wheel events
463
  virtual void wheelEvent(QGraphicsSceneWheelEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
464
  /// handle mouse press events
Jan Möbius's avatar
   
Jan Möbius committed
465
  virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent* _e);
Jan Möbius's avatar
 
Jan Möbius committed
466
467
468


  /// specialized viewer: hande mouse events
469
  void viewMouseEvent( QMouseEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
470
  /// specialized viewer: handle wheel events
471
  void viewWheelEvent(QWheelEvent* _event);
472
473
  /// specialized viewer: hande key events
  void viewKeyEvent( QKeyEvent* _event);
Jan Möbius's avatar
 
Jan Möbius committed
474

Jan Möbius's avatar
Mike:    
Jan Möbius committed
475
  
Jan Möbius's avatar
 
Jan Möbius committed
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
  protected:


  /// updates projection matrix
  void updateProjectionMatrix();


//------------------------------------------------------------- protected slots
protected slots:

  /// process signals from wheelX_
  virtual void slotWheelX(double _dAngle);
  /// process signals from wheelX_
  virtual void slotWheelY(double _dAngle);
  /// process signals from wheelZ_
  virtual void slotWheelZ(double _dist);

  /// correct ??? (same function as in qt src)
  virtual void cleanupEventFilter()
  { removeEventFilter( sender());}

//----------------------------------------------------------- private functions
private:

  /// Copy constructor. Never used!
Jan Möbius's avatar
   
Jan Möbius committed
501
  glViewer(const glViewer&);
Jan Möbius's avatar
 
Jan Möbius committed
502
  /// Assignment operator. Never used!
Jan Möbius's avatar
   
Jan Möbius committed
503
  glViewer& operator=(const glViewer&);
Jan Möbius's avatar
 
Jan Möbius committed
504
505

  // create widgets
506
  void createWidgets();
Jan Möbius's avatar
 
Jan Möbius committed
507
508
509
510
511
512

  /* Recursively draws each node in the scene graph.
      Called by paintGL(). */
  void drawScene();
  // helper called by drawScene().
  void drawScene_mono();
513
514
  /// helper function for setting the projection mode of the coordinate system node
  void setCoordSysProjection(glViewer::ProjectionMode _mode);
Jan Möbius's avatar
 
Jan Möbius committed
515

516
  
Jan Möbius's avatar
Dennis:    
Jan Möbius committed
517

518

Jan Möbius's avatar
 
Jan Möbius committed
519
520
521
522
523
//-------------------------------------------------------------- protected data
protected:

  // helper
  bool                         isRotating_;
Mike Kremer's avatar
Mike Kremer committed
524
  bool                         lookAround_;
Jan Möbius's avatar
 
Jan Möbius committed
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541


//---------------------------------------------------------------- private data
private:


  // data stored for home view
  ACG::Vec3d                   home_center_;
  double                       home_radius_;
  ACG::GLMatrixd               home_modelview_,
                               home_inverse_modelview_;
  double                       homeOrthoWidth_;


  // modi
  NormalsMode                  normalsMode_;
  ProjectionMode               projectionMode_;
Jan Möbius's avatar
Jan Möbius committed
542
  NavigationMode               navigationMode_;
543

Jan Möbius's avatar
 
Jan Möbius committed
544
545
546
547
548
549
550
551
552
553
554
555
556

  // helper
  bool                         trackMouse_;
  bool                         glareaGrabbed_;
  double                       frame_time_;


  // scenegraph stuff
  ACG::SceneGraph::BaseNode*   sceneGraphRoot_;

  bool                         projectionUpdateLocked_;

  // graphics scene used to paint gl context and widgets
557
  QGraphicsScene* glScene_;
Jan Möbius's avatar
 
Jan Möbius committed
558

Jan Möbius's avatar
   
Jan Möbius committed
559
560
561
  // gl widget used as drawing area to paint the graphics scene
  QGLWidget* glWidget_;

Jan Möbius's avatar
 
Jan Möbius committed
562
  // Base graphics widget layout
Jan Möbius's avatar
Jan Möbius committed
563
  QtGLViewerLayout* glBaseLayout_;
Jan Möbius's avatar
 
Jan Möbius committed
564
565
566
567
568
569
570

  // vector of current draw mode actions
  std::vector< QAction * > drawMenuActions_;

  // Used to calculate the time passed between redraws
  QTime redrawTime_;

Jan Möbius's avatar
Jan Möbius committed
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
  //===========================================================================
  /** @name Wheels
   * @{ */
  //===========================================================================

  public:
    bool wheelsVisible();

  public slots:
    void slotShowWheels();
    void slotHideWheels();

  private:
    // rotate around x-axis
    ACG::QtWidgets::QtWheel* wheelX_;
    // rotate around y-axis
    ACG::QtWidgets::QtWheel* wheelY_;
    // translate along z-axis
    ACG::QtWidgets::QtWheel* wheelZ_;


  /** @} */

594
595
596
597
598
  //===========================================================================
  /** @name view handling
   * @{ */
  //===========================================================================
  signals:
599
    /// This signal is emitted when the scene is repainted due to any event.
600
    void viewUpdated();
601

602
603
    /// This signal is emitted whenever the view is changed by the user
    void viewChanged();
604

605
606
607
    /// make this widget active
    void signalMakeActive ();

Jan Möbius's avatar
Jan Möbius committed
608
  /** @} */
Jan Möbius's avatar
Jan Möbius committed
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
  
  
  //===========================================================================
  /** @name Projection settings
  * @{ */
    //===========================================================================
    
    public:
    /**
    * Set new center point of scene
    */
    void setSceneCenter( const ACG::Vec3d& _center ) { properties_.sceneCenter(_center); };
    
    /** \brief Set Trackball Center point of scene
    *
    * The scene is rotated around the trackball center when using the mouse
    */
    void setTrackBallCenter( const ACG::Vec3d& _center ) { properties_.trackballCenter(_center); }
    
    /** \brief Get Trackball Center point of scene
    *
    * The scene is rotated around the trackball center when using the mouse
    */
    const ACG::Vec3d trackBallCenter( ) { return properties_.trackballCenter(); };
    
    /** Get scene's center
    \see setScenePos()
    */
    const ACG::Vec3d scene_center() const { return properties_.sceneCenter(); }
    /** Get scene's radius
    */
    double scene_radius() const { return properties_.sceneRadius(); }
Marcel Campen's avatar
Marcel Campen committed
641
    
Marcel Campen's avatar
Marcel Campen committed
642
    void setSceneRadius(double _radius) { properties_.sceneRadius(_radius); }
Jan Möbius's avatar
Jan Möbius committed
643
644
  
  /** @} */
Jan Möbius's avatar
Jan Möbius committed
645

Jan Möbius's avatar
 
Jan Möbius committed
646

647
  //===========================================================================
Jan Möbius's avatar
 
Jan Möbius committed
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
  /** @name Key handling
   * @{ */
  //===========================================================================

  signals:
    /** \brief Key Event received
     *
     * This signal is emitted if a Key press event is received which is not handled by
     * the widget itself. If internal key handling is disabled the events are passed to
     * the parent of this widget.
     */
    void signalKeyPressEvent(QKeyEvent*);

  protected:

    /** \brief Get keyPress events from the glArea
     *
     * This function is called by the internal gl widget when receiving a key press event.
     */
667
    virtual void keyPressEvent(QKeyEvent* _event) { _event->ignore(); };
Jan Möbius's avatar
 
Jan Möbius committed
668
669
670
671
672
673
674

    /** \brief Get keyRelease events from the glArea
     *
     * This function is called by the internal gl widget when receiving a key release event.
     * Here these events are simply passed to the parent widget.
     *
     */
Jan Möbius's avatar
   
Jan Möbius committed
675
    virtual void keyReleaseEvent(QKeyEvent* _event) { _event->ignore(); };
Jan Möbius's avatar
 
Jan Möbius committed
676
677
678

    /** \brief Handle key events in view mode
     *
679
     * This function is called by the BaseViewer if a key press event occured in view mode.
Jan Möbius's avatar
 
Jan Möbius committed
680
681
682
683
     * This function has to be implemented by every viewer!
     *
     * @return If the derived class handled the event it has to return true otherwise false
     */
684
    virtual bool viewKeyPressEvent(QKeyEvent* /* _event */ ) { return false; }
Jan Möbius's avatar
 
Jan Möbius committed
685
686
687
688
689
690
691
692

  /** @} */

  //===========================================================================
  /** @name Drag and Drop
   * @{ */
  //===========================================================================

693
  public:
Jan Möbius's avatar
 
Jan Möbius committed
694
695

    /// drag & drop for modelview copying
Jan Möbius's avatar
   
Jan Möbius committed
696
697
    virtual void dragEnterEvent(QGraphicsSceneDragDropEvent* _e);

Jan Möbius's avatar
 
Jan Möbius committed
698
    /// drag & drop for modelview copying
Jan Möbius's avatar
   
Jan Möbius committed
699
    virtual void dropEvent(QGraphicsSceneDragDropEvent* _e);
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
722
723
724
725
726
727
728
729
730
731

  signals:
    /** Signal is emitted when Control modifier is pressed and mouse moded.
     * It will only be emitted if in externalDragMode ( see setExternalDrag )
     */
    void startDragEvent( QMouseEvent* _event );

    /** Signal is emitted only if in externalDragMode ( see setExternalDrag )
     * It will be send if a drag enters the gl widget.
     */
    void dragEnterEvent(QDragEnterEvent* _event);

    /** Signal is emitted only if in externalDragMode ( see setExternalDrag )
     * It will be send if a drop occurs in the gl widget.
     */
    void dropEvent( QDropEvent* _event );


  /** @} */

  //===========================================================================
  /** @name Snapshots
   * @{ */
  //===========================================================================

  public slots:


    /** Trigger a snapshot and increase the snapshot counter.
        Save snapshot to file determined by snapshotBaseFileName() and
        the current snapshot counter. The \a back buffer will be saved.
    */
732
    virtual void snapshot(int _width = 0, int _height = 0, bool _alpha = false, bool _hideCoordsys = false, int samples = 1);
Jan Möbius's avatar
 
Jan Möbius committed
733

Dirk Wilden's avatar
Dirk Wilden committed
734
    /// Take a snapshot and store it in the given image
735
    virtual void snapshot(QImage& _image, int _width = 0, int _height = 0, bool _alpha = false, bool _hideCoordsys = false, int samples = 1);
Dirk Wilden's avatar
Dirk Wilden committed
736

Jan Möbius's avatar
 
Jan Möbius committed
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
  /** @} */

  //===========================================================================
  /** @name Picking
   * @{ */
  //===========================================================================
  public:
    /** Apply pick action. <br>
     *   Information about the picked primitive is stored in the
     *   provided pointers. No information is stored if 0-pointers
     *   are given. Resulting values are defined only if \c true
     *   has been returned!<br>
     *
     * @param _pickTarget Select what should be picked: Faces/Vertices/...
     * @param _mousePos   The position to be used for picking
752
     * @param _nodeIdx    If picking is successful this will contain the id of the scenegraph node picked.
Jan Möbius's avatar
 
Jan Möbius committed
753
754
     * @param _targetIdx  Special index defined by the picked Node. E.g. Facehandle/VertexHandle/.. for MeshNodes
     * @param _hitPointPtr Pointer to 3D point from picking
755
     * @return Successful?
Jan Möbius's avatar
 
Jan Möbius committed
756
757
758
759
760
761
762
     */
    bool pick( ACG::SceneGraph::PickTarget _pickTarget,
               const QPoint& _mousePos,
               unsigned int& _nodeIdx,
               unsigned int& _targetIdx,
               ACG::Vec3d*   _hitPointPtr=0 );

763
  /**  \brief Perform picking action n a whole region.
Henrik Zimmer's avatar
Henrik Zimmer committed
764
     *
765
     *   Apply pick action. <br>
Henrik Zimmer's avatar
Henrik Zimmer committed
766
     *   Picks all objects in the given Region. Information about the picked primitives is stored in the
767
     *   provided list. Resulting values are defined only if \c true has been returned!
Henrik Zimmer's avatar
Henrik Zimmer committed
768
769
770
771
     *
     * @param _pickTarget Select what should be picked: Faces/Vertices/...
     * @param _region     Area for picking
     * @param _list       List of found scenegraph objects (node/target pairs)
772
773
     * @param _depths     depths [0,1] (Only provided, if requested)
     * @param _points     back projected 3d points (Only provided, if requested)
Henrik Zimmer's avatar
Henrik Zimmer committed
774
775
776
777
778
     * @return Successful?
     */
    bool pick_region( ACG::SceneGraph::PickTarget                _pickTarget,
                      const QRegion&                             _region,
                      QList<QPair<unsigned int, unsigned int> >& _list,
779
780
                      QVector<float>*                            _depths = 0,
                      QVector<ACG::Vec3d>*                       _points = 0);
Henrik Zimmer's avatar
Henrik Zimmer committed
781
782


Jan Möbius's avatar
 
Jan Möbius committed
783
784
785
    /** get the coordinates of the picked point by z-buffer re-projection
     * @param _mousePos The position to pick
     * @param _hitPoint The point returned by the reprojection
786
     * @return Successful?
Jan Möbius's avatar
 
Jan Möbius committed
787
788
789
790
     */
    bool fast_pick( const QPoint&  _mousePos,
                    ACG::Vec3d&    _hitPoint );

791
792
793
794
    ACG::Vec3d unproject(const ACG::Vec3d &pt) {
        return glstate_->unproject(pt);
    }

Jan Möbius's avatar
 
Jan Möbius committed
795
796
  private:

Jan Möbius's avatar
Dennis:    
Jan Möbius committed
797
798
799
800
801
802
803
804
805
806
807
808
809
810
    /// pick using colors
    int pickColor( ACG::SceneGraph::PickTarget _pickTarget,
                   const QPoint& _mousePos,
                   unsigned int& _nodeIdx,
                   unsigned int& _targetIdx,
                   ACG::Vec3d*   _hitPointPtr=0 );

    /// pick using selection buffer
    bool pickGL( ACG::SceneGraph::PickTarget _pickTarget,
                 const QPoint& _mousePos,
                 unsigned int& _nodeIdx,
                 unsigned int& _targetIdx,
                 ACG::Vec3d*   _hitPointPtr=0 );

Jan Möbius's avatar
Jan Möbius committed
811
812
813
814
815
816
817
818
819
    /// pick from cache
    int pickFromCache( ACG::SceneGraph::PickTarget _pickTarget,
                       const QPoint& _mousePos,
                       unsigned int& _nodeIdx,
                       unsigned int& _targetIdx,
                       ACG::Vec3d*   _hitPointPtr=0 );

  private:

820
#if QT_VERSION < 0x050000
821
822
    typedef QGLFramebufferObjectFormat QFramebufferObjectFormat;
    typedef QGLFramebufferObject QFramebufferObject;
823
#else
824
825
    typedef QOpenGLFramebufferObjectFormat QFramebufferObjectFormat;
    typedef QOpenGLFramebufferObject QFramebufferObject;
826
827
#endif

Jan Möbius's avatar
Jan Möbius committed
828
    /// Framebuffer object that holds the pick cache
829
    QFramebufferObject* pickCache_;
Jan Möbius's avatar
Jan Möbius committed
830
831
832
833

    /// Should the pick cache be updated
    bool updatePickCache_;

834
835
836
    /// Pick target stored in pick cache
    ACG::SceneGraph::PickTarget pickCacheTarget_;

Jan Möbius's avatar
Jan Möbius committed
837
838
839
    /// Is pick caching supported
    bool pickCacheSupported_;

Jan Möbius's avatar
 
Jan Möbius committed
840
  /** @} */
841
842
843
844
845
846
847
848
849
850

  //===========================================================================
  /** @name Merge from examiner
   * @{ */
  //===========================================================================

  public:

  /// Lock scene rotation
  void allowRotation( bool _mode ) { allowRotation_ = _mode; };
851
  bool allowRotation() { return allowRotation_; };
852
853
854
855
856
857
858

  private slots:

    void slotAnimation();

  protected:

859
860
861
862
    /** \brief mouse interaction position
    *
    * This variable stores the last mouse position during mouse interaction.
    */
863
    QPoint   lastPoint2D_;
864
865
866
867
868
869
    
    /** \brief mouse interaction depth
    *
    * This variable stores the depth when the user started a mouse interaction.
    */
    float startDepth_;
870
871
872
873
874
875

  private:

    /// virtual trackball: map 2D screen point to unit sphere
    bool mapToSphere(const QPoint& _p, ACG::Vec3d& _result) const;

Mike Kremer's avatar
Mike Kremer committed
876
    /// Navigate through scene if first person mode has been selected
Jan Möbius's avatar
Jan Möbius committed
877
    void handleFirstPersonNavigation( QMouseEvent* _event);
878
879

    /// Navigate through scene if normal mode has been selected
Jan Möbius's avatar
Jan Möbius committed
880
    void handleNormalNavigation( QMouseEvent* _event);
881

882
883
884
885
886
887
888
889
890
891
892

    // mouse interaction
    ACG::Vec3d    lastPoint3D_;
    bool          lastPoint_hitSphere_;
    bool          allowRotation_;

    // animation stuff
    ACG::Vec3d                   lastRotationAxis_;
    double                       lastRotationAngle_;
    QTime                        lastMoveTime_;
    QTimer*                      timer_;
893
    double                       fovyModifier_;
894

895
896
897
898
    QTimer                       clickTimer_;
    QTime                        clickTime_;
    QMouseEvent                  clickEvent_;

899
    /** @} */
Jan Möbius's avatar
   
Jan Möbius committed
900
901
902
903
904
905
906
907
908
909
910

  //===========================================================================
  /** @name Viewer State
   * @{ */
  //===========================================================================

  public:
    /// Returns a pointer to the Viewer Status
    Viewer::ViewerProperties* properties(){ return &properties_; };

  private:
911
    /// All properties for this viewer
Dirk Wilden's avatar
Dirk Wilden committed
912
    Viewer::ViewerProperties& properties_;
Jan Möbius's avatar
   
Jan Möbius committed
913

914
915
916
    /// Gl State
    ACG::GLState                 *glstate_;

917
918
919
    /// Have the viewer gl properties been initalized
    bool initialized_;

Jan Möbius's avatar
   
Jan Möbius committed
920
  private slots:
921
922
923
    /** Called when properties for the viewer require a redraw
     * The slot will trigger the redraw after setting the right properties.
     */
Jan Möbius's avatar
   
Jan Möbius committed
924
925
    void slotPropertiesUpdated();

926
927
928
929
930
931
  private:
    /** This will apply all properties without redrawing
     *  You have to set the context yourself!
     */
    void applyProperties();

Jan Möbius's avatar
   
Jan Möbius committed
932
  /** @} */
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975

  //===========================================================================
  /** @name Flying animation properties
    * @{ */
  //===========================================================================
  public slots:

    /** \brief Animated flight to or away from a given point
     *
     * Animated flight to or away from a given point.
     *
     * @param _pos Point defining direction of flight (eye-point)
     * @param _moveBack  To or away from point?
     */
    virtual void flyTo(const QPoint& _pos, bool _moveBack);

    /** \brief Animated flight
     *
     * Animated flight into the direction of the given point.
     *
     */
    virtual void flyTo(const QPoint& _pos) { flyTo(_pos,false); }


    /** \brief Animated flight
     *
     * Animated flight away from the given point.
     *
     */
    virtual void flyFrom(const QPoint& _pos) { flyTo(_pos,true); }

    /**  Fly to point and set new viewing direction (animated).
     * @param _position New viewer position ( the new eye point of the viewer )
     * @param _center   The new scene center ( the point we are looking at )
     * @param _time     Animation time in ms
     */
    virtual void flyTo(const ACG::Vec3d& _position,
                       const ACG::Vec3d& _center,
                       int               _time = 1000);

  private:

    /// The animation object for flyTo
Jan Möbius's avatar
Jan Möbius committed
976
977
    QPropertyAnimation* flyAnimationPerspective_;
    QPropertyAnimation* flyAnimationOrthogonal_;
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000

    /// Full translation between start and ed of animation
    ACG::Vec3d flyTranslation_;

    /// The rotation axis for fly to animation
    ACG::Vec3d flyAxis_;

    /// The rotation angle (full angle) for fly to animation
    double     flyAngle_;

    /// The last position of the animation to compute the difference vector
    double     lastAnimationPos_;

    Q_PROPERTY(double currentAnimationPosition READ currentAnimationPos WRITE currentAnimationPos NOTIFY currentAnimationPosChanged)

    /// The property that is animated by flyTo
    double     currentAnimationPos_;

    /// Getter for aflyToAnimationPosition
    double currentAnimationPos() {return currentAnimationPos_;};

    /// Setter for aflyToAnimationPosition
    void   currentAnimationPos(double _currentAnimationPos) {currentAnimationPos_ = _currentAnimationPos; emit currentAnimationPosChanged(_currentAnimationPos); };