summaryrefslogtreecommitdiffstats
path: root/kpovmodeler/pmrendermanager.h
blob: 8305de19d3ade37b1cdcc611c89b3aa038a87a2d (plain)
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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
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
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
//-*-C++-*-
/*
**************************************************************************
                                 description
                             --------------------
    copyright            : (C) 2000-2001 by Andreas Zehender
    email                : zehender@kde.org
**************************************************************************

**************************************************************************
*                                                                        *
*  This program is free software; you can redistribute it and/or modify  *
*  it under the terms of the GNU General Public License as published by  *
*  the Free Software Foundation; either version 2 of the License, or     *
*  (at your option) any later version.                                   *
*                                                                        *
**************************************************************************/

#ifndef PMRENDERMANAGER_H
#define PMRENDERMANAGER_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "pmcontrolpoint.h"
#include "pmmatrix.h"
#include "pmobject.h"
#include "pmviewstructure.h"

#include <tqobject.h>
#include <tqptrlist.h>
#include <tqcolor.h>
#include <tqptrstack.h>
#include <tqvaluestack.h>
#include <kstaticdeleter.h>
#include <GL/gl.h>

class PMGLView;
class PMCamera;
class PMPoint;
class TDEConfig;
class TQString;

/**
 * Used internally by PMRenderManager.
 *
 * This class stores informations for one render task.
 */
class PMRenderTask
{
public:
   PMRenderTask( PMGLView* view, PMObject* active, PMObject* top,
                 PMControlPointList* controlPoints, double aspectRatio,
                 int visibilityLevel )
   {
      m_pView = view;
      m_pActiveObject = active;
      m_pTopLevelObject = top;
      m_pControlPoints = controlPoints;
      m_aspectRatio = aspectRatio;
      m_visibilityLevel = visibilityLevel;
   }
   
   ~PMRenderTask( ) { };
   
   PMGLView* view( ) const { return m_pView; }
   PMObject* activeObject( ) const { return m_pActiveObject; }
   PMObject* topLevelObject( ) const { return m_pTopLevelObject; }
   PMControlPointList* controlPoints( ) const { return m_pControlPoints; }
   double aspectRatio( ) const { return m_aspectRatio; }
   int visibilityLevel( ) const { return m_visibilityLevel; }

   void setView( PMGLView* view ) { m_pView = view; }
   void setActiveObject( PMObject* obj ) { m_pActiveObject = obj; }
   void setTopLevelObject( PMObject* obj ) { m_pTopLevelObject = obj; }
   void setControlPoints( PMControlPointList* list ) { m_pControlPoints = list; }
   void setAspectRatio( double ar ) { m_aspectRatio = ar; }
   void setVisibilityLevel( int l ) { m_visibilityLevel = l; }
   
private:
   PMGLView* m_pView;
   PMObject* m_pActiveObject;
   PMObject* m_pTopLevelObject;
   PMControlPointList* m_pControlPoints;
   double m_aspectRatio;
   int m_visibilityLevel;
};

typedef TQPtrList<PMRenderTask> PMRenderTaskList;
typedef TQPtrListIterator<PMRenderTask> PMRenderTaskListIterator;

/**
 * Class that controls the background rendering
 */
class PMRenderManager : public TQObject
{
   Q_OBJECT
  
public:
   /**
    * Returns a pointer to the render manager
    */
   static PMRenderManager* theManager( );
   /**
    * destructor
    */
   ~PMRenderManager( );
   /**
    * Adds the @ref PMGLView to the list of views that have to be rendered.
    *
    * @param view The view
    * @param active The active object
    * @param top The top level object (normally the scene)
    * @param controlPoints A pointer to the list of control points for the
    *        active object
    * @param graphicalChange If true the view will be rendered with higher
    *        priority
    */
   void addView( PMGLView* view, PMObject* active, PMObject* top,
                 PMControlPointList* controlPoints, double aspectRatio,
                 int visibilityLevel, bool graphicalChange );
   /**
    * Removes the view from the list of views that have to be rendered
    */
   void removeView( PMGLView* view );

   /**
    * Call this method if a PMGLView was created
    */
   void viewCreated( ) { m_nViews++; }
   /**
    * Call this method if a PMGLView was deleted
    */
   void viewDeleted( ) { m_nViews--; }

   /**
    * Returns true if the render manager holds a task for the view
    */
   bool containsTask( PMGLView* view ) const;

   /**
    * Returns the color for the control points
    */
   TQColor controlPointColor( int i ) const;
   /**
    * Sets the control point color
    */
   void setControlPointColor( int i, const TQColor& c );
   /**
    * Returns the color for graphical objects
    */
   TQColor graphicalObjectColor( int i ) const;
   /**
    * Sets the graphical object color
    */
   void setGraphicalObjectColor( int i, const TQColor& c );
   /**
    * Returns the color for the coordinate axes
    */
   TQColor axesColor( int i ) const;
   /**
    * Sets the axes color
    */
   void setAxesColor( int i, const TQColor& c );
   /**
    * Returns the background color
    */
   TQColor backgroundColor( ) const { return m_backgroundColor; }
   /**
    * Sets the background color
    */
   void setBackgroundColor( const TQColor& c ) { m_backgroundColor = c; }
   /**
    * Returns the field of view color.
    */
   TQColor fieldOfViewColor( ) const { return m_fieldOfViewColor; }
   /**
    * Sets the field of view color
    */
   void setFieldOfViewColor( const TQColor& c ) { m_fieldOfViewColor = c; }
   
   /**
    * Sets the grid color
    */
   void setGridColor( const TQColor& c ) { m_gridColor = c; }
   /**
    * Returns the grid color
    */
   TQColor gridColor( ) { return m_gridColor; }
   /**
    * Sets the grid distance
    */
   void setGridDistance( int d );
   /**
    * Returns the grid distance
    */
   int gridDistance( ) { return m_gridDistance; }

   /**
    * Returns true if the camera views with complex projections
    * are rendered with high detail
    */
   bool highDetailCameraViews( ) const { return m_highDetailCameraView; }
   /**
    * Sets the highDetailCameraView flag
    */
   void setHighDetailCameraViews( bool yes ) { m_highDetailCameraView = yes; }
   
   /**
    * Sets the gl drawing color
    */
   static void setGLColor( const TQColor& c );

   /**
    * Saves the configuration
    */
   void saveConfig( TDEConfig* cfg );
   /**
    * Restores the configuration
    */
   void restoreConfig( TDEConfig* cfg );

   /**
    * Returns true if the glx extension is available
    */
   static bool hasOpenGL( );
   /**
    * Disables OpenGL rendering
    */
   static void disableOpenGL( );
   
public slots:
   /**
    * Stops rendering
    */
   void slotStopRendering( );
   /**
    * Call this when rendering settings have been changed
    */
   void slotRenderingSettingsChanged( );
   
signals:
   /**
    * Emitted when rendering starts for the view v
    */
   void renderingStarted( PMGLView* v );
   /**
    * Emitted just before the view is updated
    */
   void aboutToUpdate( PMGLView* v );
   /**
    * Emitted when rendering has been finished for the view v
    */
   void renderingFinished( PMGLView* v );
   /**
    * Emitted when rendering settings (colors ...) have been changed
    */
   void renderingSettingsChanged( );
   /**
    * Emitted when rendering has started
    */
   void renderingStarted( );
   /**
    * Emitted when rendering has finished
    */
   void renderingFinished( );
   
protected:
   virtual void timerEvent( TQTimerEvent* );
   
private:
   /**
    * constructor
    */
   PMRenderManager( );
   
   /**
    * Restarts rendering
    */
   void restartRendering( );
   
   /**
    * The background task for rendering
    */
   void renderTask( );
   /**
    * Renders one object
    */
   void renderObject( PMObject* obj );
   /**
    * Renders the view structure, subdivides the lines in high
    detail camera views */
   void renderViewStructure( PMViewStructure& vs );
   /**
    * Renders the view structure without subdivisions
    */
   void renderViewStructureSimple( PMPointArray& points, PMLineArray& lines,
                                   int numberOfLines = -1 );
   /**
    * Renders the control points
    */
   void renderControlPoints( );
   /**
    * Draws the grid
    */
   void renderGrid( );
   /**
    * Draws the coordinate axis
    */
   void renderAxes( );
   /**
    * Draws the field of view for camera views
    */
   void renderFieldOfView( );
   /**
    * Draws the view descriptions
    */
   void renderDescription( );
   /**
    * Renders the string
    */
   void renderString( const TQString& str, double x, double y );
   
   /**
    * Transforms and renders the view structure for special
    * camera projection types.
    */
   void transformProjection( PMPoint* points, int size, PMCamera* camera );
   /**
    * Sets the projection for the current view
    */
   void setProjection( );
   /**
    * Sets the projection for a camera view
    */
   void setCameraProjection( );

   /**
    * Calculates the view transformation for the camera c
    */
   PMMatrix viewTransformation( PMCamera* c ) const;

   /**
    * List of render tasks. The first has the highest priority
    */
   TQPtrList<PMRenderTask> m_renderTasks;
   /**
    * Flag for background rendering
    */
   bool m_bStopTask, m_bStartTask, m_bTaskIsRunning;
   /**
    * The color for view structures of graphical objects.
    *
    * index 0: normal color, 1: selected
    */
   TQColor m_graphicalObjectColor[2];
   /**
    * The color for view structures of textures
    */
   TQColor m_textureColor[2];
   /**
    * The color for the coordinate axes
    */
   TQColor m_axesColor[3];
   /**
    * The background color
    */
   TQColor m_backgroundColor;
   /**
    * color for control points
    *
    * index 0: normal color, 1: selected
    */
   TQColor m_controlPointColor[2];
   /**
    * Color for the field of view box
    */
   TQColor m_fieldOfViewColor;
   
   /**
    * Grid distance and color
    */
   int m_gridDistance;
   TQColor m_gridColor;
   /**
    * If true, lines are subdivided in camera views with complex
    * projections
    */
   bool m_highDetailCameraView;
   
   /**
    * Number of rendered lines between calls of processEvents( )
    */
   unsigned int m_nMaxRenderedLines;

   /**
    * Number of gl views
    */
   unsigned int m_nViews;
   /**
    * The render manager (singleton pattern)
    */
   static PMRenderManager* s_pManager;
   static KStaticDeleter<PMRenderManager> s_staticDeleter;

   // Member variables to save stack space during rendering
   PMRenderTask* m_pCurrentTask;
   PMGLView* m_pCurrentGlView;
   TQPtrStack<PMMatrix> m_matrixStack; // I don't know if the build in gl matrix stack is deep enough
   bool m_selected;
   PMObject* m_pDeselectObject;
   PMObjectList m_objectToRenderStack;
   TQPtrStack<PMObject> m_quickColorObjects;
   TQPtrStack<TQColor> m_quickColors;
   TQColor m_currentColor;
   TQValueStack<int> m_visibilityStack;
   int m_currentVisibility;
   unsigned int m_renderedLines;
   PMMatrix m_controlPointTransformation;

   // for transformProjection
   bool m_specialCameraMode;
   PMMatrix m_viewTransformation;
   double m_upLength, m_rightLength, m_directionLength;
   double m_anglex, m_angley;
   PMViewStructure m_subdivisionViewStructure;

   PMViewStructure m_axesViewStructure[3];
   bool m_axesViewStructureCreated;

   static bool s_hasOpenGL;
   static bool s_hasOpenGLChecked;
};

#endif