Developer Documentation
SliceNode.cc
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41 
42 
43 
44 
45 
46 
47 //=============================================================================
48 
49 #include "SliceNode.hh"
50 
51 //=============================================================================
52 
53 namespace ACG {
54 namespace SceneGraph {
55 
56 //=============================================================================
57 
58 
59 SliceNode::SliceNode( BaseNode * _parent,
60  const std::string& _name ) :
61  BaseNode( _parent, _name ),
62  view_frame_(false),
63  enabled_(NONE)
64 {
65  set_visible_box( Vec3f( 0, 0, 0 ),
66  Vec3f( 1, 1, 1 ) );
67 
68  set_texture_box( Vec3f( 0, 0, 0 ),
69  Vec3f( 1, 1, 1 ) );
70 
71  set_cursor( Vec3f( 0.5, 0.5, 0.5 ) );
72 }
73 
74 
75 //----------------------------------------------------------------------------
76 
77 
78 SliceNode::~SliceNode()
79 {
80 }
81 
82 
83 //----------------------------------------------------------------------------
84 
85 
86 void
87 SliceNode::view_frame( bool _view_frame )
88 {
89  view_frame_ = _view_frame;
90 }
91 
92 
93 //----------------------------------------------------------------------------
94 
95 
96 void
97 SliceNode::boundingBox( Vec3d & _bbMin, Vec3d & _bbMax )
98 {
99  _bbMin.minimize( visible_min_ );
100  _bbMax.maximize( visible_max_ );
101 }
102 
103 
104 //----------------------------------------------------------------------------
105 
106 
107 DrawModes::DrawMode
108 SliceNode::availableDrawModes() const
109 {
110  return DrawModes::DrawMode(0);
111  /*
112  return ( DrawModes::POINTS |
113  DrawModes::WIREFRAME |
114  DrawModes::HIDDENLINE |
115  DrawModes::SOLID_FLAT_SHADED |
116  DrawModes::SOLID_SMOOTH_SHADED );
117 */
118 }
119 
120 
121 //----------------------------------------------------------------------------
122 
123 
124 void
125 SliceNode::draw( GLState & /* _state */ , const DrawModes::DrawMode& /* _drawMode */ )
126 {
127 
128  if ( is_enabled( NONE ) )
129  return;
130 
131  glPushAttrib(GL_LIGHTING_BIT);
132  glPushAttrib(GL_ENABLE_BIT);
133  glPushAttrib(GL_COLOR_BUFFER_BIT);
134 
135  if ( view_frame_ )
136  draw_frame();
137 
138  ACG::GLState::enable( GL_LIGHTING );
139  glLightModeli( GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE );
140 
141  ACG::GLState::enable( GL_TEXTURE_3D );
142 
143  ACG::GLState::enable( GL_BLEND );
144  ACG::GLState::blendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
145 
146  draw_planes();
147 
148  ACG::GLState::disable( GL_BLEND );
149  ACG::GLState::disable( GL_TEXTURE_3D );
150  ACG::GLState::disable( GL_LIGHTING );
151 
152  glPopAttrib();
153  glPopAttrib();
154  glPopAttrib();
155 
156 }
157 
158 
159 //----------------------------------------------------------------------------
160 
161 
162 void
163 SliceNode::draw_frame() const
164 {
165  ACG::GLState::disable( GL_BLEND );
166  ACG::GLState::disable( GL_TEXTURE_3D );
167  ACG::GLState::disable( GL_LIGHTING );
168 
169  glBegin( GL_LINES );
170 
171  glColor3f( 1, 1, 1 );
172 
173  glVertex3f( visible_min_[0], visible_min_[1], visible_min_[2] );
174  glVertex3f( visible_min_[0], visible_min_[1], visible_max_[2] );
175  glVertex3f( visible_min_[0], visible_max_[1], visible_min_[2] );
176  glVertex3f( visible_min_[0], visible_max_[1], visible_max_[2] );
177  glVertex3f( visible_max_[0], visible_max_[1], visible_min_[2] );
178  glVertex3f( visible_max_[0], visible_max_[1], visible_max_[2] );
179  glVertex3f( visible_max_[0], visible_min_[1], visible_min_[2] );
180  glVertex3f( visible_max_[0], visible_min_[1], visible_max_[2] );
181 
182  glVertex3f( visible_min_[0], visible_min_[1], visible_min_[2] );
183  glVertex3f( visible_min_[0], visible_max_[1], visible_min_[2] );
184  glVertex3f( visible_min_[0], visible_min_[1], visible_max_[2] );
185  glVertex3f( visible_min_[0], visible_max_[1], visible_max_[2] );
186  glVertex3f( visible_max_[0], visible_min_[1], visible_min_[2] );
187  glVertex3f( visible_max_[0], visible_max_[1], visible_min_[2] );
188  glVertex3f( visible_max_[0], visible_min_[1], visible_max_[2] );
189  glVertex3f( visible_max_[0], visible_max_[1], visible_max_[2] );
190 
191  glVertex3f( visible_min_[0], visible_min_[1], visible_min_[2] );
192  glVertex3f( visible_max_[0], visible_min_[1], visible_min_[2] );
193  glVertex3f( visible_min_[0], visible_min_[1], visible_max_[2] );
194  glVertex3f( visible_max_[0], visible_min_[1], visible_max_[2] );
195  glVertex3f( visible_min_[0], visible_max_[1], visible_min_[2] );
196  glVertex3f( visible_max_[0], visible_max_[1], visible_min_[2] );
197  glVertex3f( visible_min_[0], visible_max_[1], visible_max_[2] );
198  glVertex3f( visible_max_[0], visible_max_[1], visible_max_[2] );
199 
200  glEnd();
201 
202  glBegin( GL_LINES );
203 
204  glColor3f( 1, 1, 1 );
205 
206  if ( is_enabled( XY_PLANE ) )
207  {
208  glVertex3f( visible_min_[0], visible_min_[1], cursor_[2] );
209  glVertex3f( visible_max_[0], visible_min_[1], cursor_[2] );
210  glVertex3f( visible_max_[0], visible_min_[1], cursor_[2] );
211  glVertex3f( visible_max_[0], visible_max_[1], cursor_[2] );
212  glVertex3f( visible_max_[0], visible_max_[1], cursor_[2] );
213  glVertex3f( visible_min_[0], visible_max_[1], cursor_[2] );
214  glVertex3f( visible_min_[0], visible_max_[1], cursor_[2] );
215  glVertex3f( visible_min_[0], visible_min_[1], cursor_[2] );
216  }
217 
218 
219  if ( is_enabled( YZ_PLANE ) )
220  {
221  glVertex3f( cursor_[0], visible_min_[1], visible_min_[2] );
222  glVertex3f( cursor_[0], visible_min_[1], visible_max_[2] );
223  glVertex3f( cursor_[0], visible_min_[1], visible_max_[2] );
224  glVertex3f( cursor_[0], visible_max_[1], visible_max_[2] );
225  glVertex3f( cursor_[0], visible_max_[1], visible_max_[2] );
226  glVertex3f( cursor_[0], visible_max_[1], visible_min_[2] );
227  glVertex3f( cursor_[0], visible_max_[1], visible_min_[2] );
228  glVertex3f( cursor_[0], visible_min_[1], visible_min_[2] );
229  }
230 
231 
232  if ( is_enabled( XZ_PLANE ) )
233  {
234  glVertex3f( visible_min_[0], cursor_[1], visible_min_[2] );
235  glVertex3f( visible_max_[0], cursor_[1], visible_min_[2] );
236  glVertex3f( visible_max_[0], cursor_[1], visible_min_[2] );
237  glVertex3f( visible_max_[0], cursor_[1], visible_max_[2] );
238  glVertex3f( visible_max_[0], cursor_[1], visible_max_[2] );
239  glVertex3f( visible_min_[0], cursor_[1], visible_max_[2] );
240  glVertex3f( visible_min_[0], cursor_[1], visible_max_[2] );
241  glVertex3f( visible_min_[0], cursor_[1], visible_min_[2] );
242  }
243 
244  glEnd();
245 }
246 
247 
248 //----------------------------------------------------------------------------
249 
250 
251 void
252 SliceNode::draw_planes() const
253 {
254  ACG::GLState::shadeModel( GL_FLAT );
255 
256 
257  glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
258 
259  ACG::GLState::depthRange(0.01, 1.0);
260 
261  Vec3f rel;
262  Vec3f tcmin;
263  Vec3f tcmax;
264 
265  for ( int i = 0; i < 3; ++i )
266  {
267  rel[i] = ( cursor_[i]-texture_min_[i] ) / ( texture_max_[i] - texture_min_[i] );
268  tcmin[i] = ( visible_min_[i] - texture_min_[i] )
269  / ( texture_max_[i] - texture_min_[i] );
270  tcmax[i] = ( visible_max_[i] - texture_min_[i] )
271  / ( texture_max_[i] - texture_min_[i] );
272  }
273 
274  if ( cursor_[2] >= visible_min_[2] &&
275  cursor_[2] <= visible_max_[2] &&
276  is_enabled( XY_PLANE ) )
277  {
278  glBegin( GL_QUADS );
279 
280  glNormal3f( 0, 0, 1 );
281 
282  glTexCoord3f( tcmin[0], tcmin[1], rel[2] );
283  glVertex3f( visible_min_[0], visible_min_[1], cursor_[2] );
284 
285  glTexCoord3f( tcmax[0], tcmin[1], rel[2] );
286  glVertex3f( visible_max_[0], visible_min_[1], cursor_[2] );
287 
288  glTexCoord3f( tcmax[0], tcmax[1], rel[2] );
289  glVertex3f( visible_max_[0], visible_max_[1], cursor_[2] );
290 
291  glTexCoord3f( tcmin[0], tcmax[1], rel[2] );
292  glVertex3f( visible_min_[0], visible_max_[1], cursor_[2] );
293 
294  glEnd();
295  }
296 
297  if ( cursor_[0] >= visible_min_[0] &&
298  cursor_[0] <= visible_max_[0] &&
299  is_enabled( YZ_PLANE ) )
300  {
301  glBegin( GL_QUADS );
302 
303  glNormal3f( -1, 0, 0 );
304 
305  glTexCoord3f( rel[0], tcmin[1], tcmin[2] );
306  glVertex3f( cursor_[0], visible_min_[1], visible_min_[2] );
307 
308  glTexCoord3f( rel[0], tcmin[1], tcmax[2] );
309  glVertex3f( cursor_[0], visible_min_[1], visible_max_[2] );
310 
311  glTexCoord3f( rel[0], tcmax[1], tcmax[2] );
312  glVertex3f( cursor_[0], visible_max_[1], visible_max_[2] );
313 
314  glTexCoord3f( rel[0], tcmax[1], tcmin[2] );
315  glVertex3f( cursor_[0], visible_max_[1], visible_min_[2] );
316 
317  glEnd();
318  }
319 
320  if ( cursor_[1] >= visible_min_[1] &&
321  cursor_[1] <= visible_max_[1] &&
322  is_enabled( XZ_PLANE ) )
323  {
324  glBegin( GL_QUADS );
325 
326  glNormal3f( 0, -1, 0 );
327 
328  glTexCoord3f( tcmin[0], rel[1], tcmin[2] );
329  glVertex3f( visible_min_[0], cursor_[1], visible_min_[2] );
330 
331  glTexCoord3f( tcmax[0], rel[1], tcmin[2] );
332  glVertex3f( visible_max_[0], cursor_[1], visible_min_[2] );
333 
334  glTexCoord3f( tcmax[0], rel[1], tcmax[2] );
335  glVertex3f( visible_max_[0], cursor_[1], visible_max_[2] );
336 
337  glTexCoord3f( tcmin[0], rel[1], tcmax[2] );
338  glVertex3f( visible_min_[0], cursor_[1], visible_max_[2] );
339 
340  glEnd();
341  }
342 
343 
344  ACG::GLState::depthRange(0.0, 1.0);
345 }
346 
347 //----------------------------------------------------------------------------
348 
349 
350 ACG::Vec3f
351 SliceNode::cursor() const
352 {
353  return cursor_;
354 }
355 
356 
357 //----------------------------------------------------------------------------
358 
359 
360 void
361 SliceNode::set_cursor( const Vec3f & _cursor )
362 {
363  cursor_ = _cursor;
364 }
365 
366 
367 //----------------------------------------------------------------------------
368 
369 
370 bool
371 SliceNode::is_enabled( Plane _plane ) const
372 {
373  return enabled_ == _plane;
374 }
375 
376 
377 //----------------------------------------------------------------------------
378 
379 
380 void
381 SliceNode::set_enabled( Plane _plane )
382 {
383  enabled_ = _plane;
384 }
385 
386 
387 //----------------------------------------------------------------------------
388 
389 
390 void
391 SliceNode::set_visible_box( const Vec3f & _box_min,
392  const Vec3f & _box_max )
393 {
394  visible_min_ = _box_min;
395  visible_max_ = _box_max;
396 }
397 
398 
399 //----------------------------------------------------------------------------
400 
401 
402 void
403 SliceNode::set_texture_box( const Vec3f & _box_min,
404  const Vec3f & _box_max )
405 {
406  texture_min_ = _box_min;
407  texture_max_ = _box_max;
408 }
409 
410 
411 //----------------------------------------------------------------------------
412 
413 
414 void
415 SliceNode::pick( GLState & _state, PickTarget /* _target */ )
416 {
417  _state.pick_set_maximum (1);
418  _state.pick_set_name (0);
419  ACG::GLState::disable(GL_LIGHTING);
420  glPushMatrix();
421  draw_planes();
422  glPopMatrix();
423 }
424 
425 
426 //=============================================================================
427 } // namespace SceneGraph
428 } // namespace ACG
429 //=============================================================================
ACG::GLState::enable
static void enable(GLenum _cap, bool _warnRemoved=true)
replaces glEnable, but supports locking
Definition: GLState.cc:1507
ACG::GLState::shadeModel
static void shadeModel(GLenum _mode)
replaces glShadeModel, supports locking
Definition: GLState.cc:1729
ACG::SceneGraph::SliceNode::pick
void pick(GLState &_state, PickTarget _target) override
Definition: SliceNode.cc:415
ACG
Namespace providing different geometric functions concerning angles.
Definition: BaseObjectData.hh:68
OpenMesh::VectorT::maximize
vector_type & maximize(const vector_type &_rhs)
maximize values: same as *this = max(*this, _rhs), but faster
Definition: Vector11T.hh:587
ACG::GLState::depthRange
static void depthRange(GLclampd _zNear, GLclampd _zFar)
replaces glDepthRange, supports locking
Definition: GLState.cc:1757
ACG::SceneGraph::PickTarget
PickTarget
What target to use for picking.
Definition: PickTarget.hh:73
ACG::SceneGraph::SliceNode::availableDrawModes
DrawModes::DrawMode availableDrawModes() const override
Definition: SliceNode.cc:108
ACG::GLState::disable
static void disable(GLenum _cap, bool _warnRemoved=true)
replaces glDisable, but supports locking
Definition: GLState.cc:1527
ACG::Vec3f
VectorT< float, 3 > Vec3f
Definition: VectorT.hh:119
ACG::GLState::pick_set_maximum
bool pick_set_maximum(size_t _idx)
Set the maximal number of primitives/components of your object.
Definition: GLState.cc:1051
OpenMesh::VectorT::minimize
vector_type & minimize(const vector_type &_rhs)
minimize values: same as *this = min(*this, _rhs), but faster
Definition: Vector11T.hh:559
ACG::SceneGraph::SliceNode::draw
void draw(GLState &_state, const DrawModes::DrawMode &_drawMode) override
Draw this node using the draw modes _drawMode.
Definition: SliceNode.cc:125
ACG::SceneGraph::DrawModes::NONE
DrawMode NONE
not a valid draw mode
Definition: DrawModes.cc:71
ACG::GLState::blendFunc
static void blendFunc(GLenum _sfactor, GLenum _dfactor)
replaces glBlendFunc, supports locking
Definition: GLState.hh:307
ACG::GLState::pick_set_name
void pick_set_name(size_t _idx)
sets the current name/color (like glLoadName(_idx))
Definition: GLState.cc:1061
ACG::SceneGraph::SliceNode::boundingBox
void boundingBox(Vec3d &_bbMin, Vec3d &_bbMax) override
Definition: SliceNode.cc:97