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TGLViewerBase.cxx
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1// @(#)root/gl:$Id$
2// Author: Matevz Tadel, Feb 2007
3
4/*************************************************************************
5 * Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12#include "TGLViewerBase.h"
13
14#include "TGLSceneBase.h"
15#include "TGLSceneInfo.h"
16
17#include "TGLRnrCtx.h"
18#include "TGLCamera.h"
19#include "TGLClip.h"
20#include "TGLOverlay.h"
21#include "TGLSelectBuffer.h"
22#include "TGLSelectRecord.h"
23#include "TGLAnnotation.h"
24#include "TGLUtil.h"
25
26#include "TGLContext.h"
27#include "TGLIncludes.h"
28
29#include "TEnv.h"
30
31#include <algorithm>
32#include <stdexcept>
33
34/** \class TGLViewerBase
35\ingroup opengl
36Base class for GL viewers. Provides a basic scene management and a
37small set of control variables (camera, LOD, style, clip) that are
38used by the scene classes. Renering wrappers are available but
39minimal.
40
41There is no concept of GL-context here ... we just draw
42into whatever is set from outside.
43
44Development notes:
45
46Each viewer automatically creates a TGLRnrCtx and passes it down
47all render functions.
48*/
49
51
52////////////////////////////////////////////////////////////////////////////////
53
55 fRnrCtx (0),
56 fCamera (0),
57 fClip (0),
58 fLOD (TGLRnrCtx::kLODHigh),
59 fStyle (TGLRnrCtx::kFill),
60 fWFLineW (1),
61 fOLLineW (1),
62
63 fResetSceneInfosOnRender (kFALSE),
64 fChanged (kFALSE)
65{
66 // Constructor.
67
68 fRnrCtx = new TGLRnrCtx(this);
69
70 fWFLineW = gEnv->GetValue("OpenGL.WireframeLineScalingFactor", 1.0);
71 fOLLineW = gEnv->GetValue("OpenGL.OutlineLineScalingFactor", 1.0);
72}
73
74////////////////////////////////////////////////////////////////////////////////
75/// Destructor.
76
78{
79 for (SceneInfoList_i i=fScenes.begin(); i!=fScenes.end(); ++i)
80 {
81 (*i)->GetScene()->RemoveViewer(this);
82 delete *i;
83 }
84
86
87 delete fRnrCtx;
88}
89
90////////////////////////////////////////////////////////////////////////////////
91/// Name to print in locking output.
92
93const char* TGLViewerBase::LockIdStr() const
94{
95 return "TGLViewerBase";
96}
97
98/**************************************************************************/
99// Scene & scene-info management
100/**************************************************************************/
101
102////////////////////////////////////////////////////////////////////////////////
103/// Find scene-info corresponding to scene.
104
107{
108 SceneInfoList_i i = fScenes.begin();
109 while (i != fScenes.end() && (*i)->GetScene() != scene) ++i;
110 return i;
111}
112
113////////////////////////////////////////////////////////////////////////////////
114/// Add new scene, appropriate scene-info is created.
115
117{
118 SceneInfoList_i i = FindScene(scene);
119 if (i == fScenes.end()) {
120 TGLSceneInfo* sinfo = scene->CreateSceneInfo(this);
121 fScenes.push_back(sinfo);
122 scene->AddViewer(this);
123 Changed();
124 return sinfo;
125 } else {
126 Warning("TGLViewerBase::AddScene", "scene '%s' already in the list.",
127 scene->GetName());
128 return 0;
129 }
130}
131
132////////////////////////////////////////////////////////////////////////////////
133/// Remove scene from the viewer, its scene-info is deleted.
134
136{
137 SceneInfoList_i i = FindScene(scene);
138 if (i != fScenes.end()) {
139 delete *i;
140 fScenes.erase(i);
141 scene->RemoveViewer(this);
142 Changed();
143 } else {
144 Warning("TGLViewerBase::RemoveScene", "scene '%s' not found.",
145 scene->GetName());
146 }
147}
148
149////////////////////////////////////////////////////////////////////////////////
150/// Remove all scenes from the viewer, their scene-infos are deleted.
151
153{
154 for (SceneInfoList_i i=fScenes.begin(); i!=fScenes.end(); ++i)
155 {
156 TGLSceneInfo * sinfo = *i;
157 sinfo->GetScene()->RemoveViewer(this);
158 delete sinfo;
159 }
160 fScenes.clear();
161 Changed();
162}
163
164////////////////////////////////////////////////////////////////////////////////
165/// Remove scene, its scene-info is deleted.
166/// Called from scene that is being destroyed while still holding
167/// viewer references.
168
170{
171 SceneInfoList_i i = FindScene(scene);
172 if (i != fScenes.end()) {
173 delete *i;
174 fScenes.erase(i);
175 Changed();
176 } else {
177 Warning("TGLViewerBase::SceneDestructing", "scene not found.");
178 }
179}
180
181////////////////////////////////////////////////////////////////////////////////
182/// Find scene-info corresponding to scene.
183
185{
186 SceneInfoList_i i = FindScene(scene);
187 if (i != fScenes.end())
188 return *i;
189 else
190 return 0;
191}
192
193////////////////////////////////////////////////////////////////////////////////
194/// Find logical-shape representing object id in the list of scenes.
195/// Return 0 if not found.
196
198{
199 for (SceneInfoList_i i=fScenes.begin(); i!=fScenes.end(); ++i)
200 {
201 TGLLogicalShape *lshp = (*i)->GetScene()->FindLogical(id);
202 if (lshp)
203 return lshp;
204 }
205 return 0;
206}
207
208////////////////////////////////////////////////////////////////////////////////
209/// Add overlay element.
210
212{
213 fOverlay.push_back(el);
214 Changed();
215}
216
217////////////////////////////////////////////////////////////////////////////////
218/// Remove overlay element.
219
221{
222 OverlayElmVec_i it = std::find(fOverlay.begin(), fOverlay.end(), el);
223 if (it != fOverlay.end())
224 fOverlay.erase(it);
225 Changed();
226}
227
228////////////////////////////////////////////////////////////////////////////////
229/// Delete overlay elements that are annotations.
230
232{
234}
235
236////////////////////////////////////////////////////////////////////////////////
237/// Delete overlay elements.
238
240{
241 OverlayElmVec_t ovl;
242 fOverlay.swap(ovl);
243
244 for (OverlayElmVec_i i = ovl.begin(); i != ovl.end(); ++i)
245 {
246 if (role == TGLOverlayElement::kAll || (*i)->GetRole() == role)
247 delete *i;
248 else
249 fOverlay.push_back(*i);
250 }
251
252 Changed();
253}
254
255/**************************************************************************/
256// SceneInfo update / check
257/**************************************************************************/
258
259////////////////////////////////////////////////////////////////////////////////
260/// Force rebuild of view-dependent scene-info structures.
261///
262/// This should be called before calling render (draw/select) if
263/// something that affects camera interest has been changed.
264
266{
267 SceneInfoList_i i = fScenes.begin();
268 while (i != fScenes.end())
269 {
270 (*i)->ResetSceneStamp();
271 ++i;
272 }
273}
274
275////////////////////////////////////////////////////////////////////////////////
276/// Merge bounding-boxes of all active registered scenes.
277
279{
280 bbox.SetEmpty();
281 for (SceneInfoList_i i=fScenes.begin(); i!=fScenes.end(); ++i)
282 {
283 TGLSceneInfo * sinfo = *i;
284 if (sinfo->GetActive())
285 {
286 sinfo->SetupTransformsAndBBox(); // !!! transform not done yet, no camera
287 bbox.MergeAligned(sinfo->GetTransformedBBox());
288 }
289 }
290}
291
292/**************************************************************************/
293// Rendering / selection virtuals
294/**************************************************************************/
295
296////////////////////////////////////////////////////////////////////////////////
297/// Setup clip-object. Protected virtual method.
298
300{
301 if (fClip)
302 {
304 }
305}
306
307////////////////////////////////////////////////////////////////////////////////
308/// Initialize render-context, setup camera, GL, render-area.
309/// Check and lock scenes, determine their visibility.
310
312{
314 if (cid == 0)
315 {
316 // Assume derived class set it up for us.
317 // This happens due to complex implementation
318 // of gl-in-pad using gGLManager.
319 // In principle we should throw an exception:
320 // throw std::runtime_error("Can not resolve GL context.");
321 }
322 else
323 {
324 if (cid != fRnrCtx->GetGLCtxIdentity())
325 {
326 if (fRnrCtx->GetGLCtxIdentity() != 0)
327 Warning("TGLViewerBase::PreRender", "Switching to another GL context; maybe you should use context-sharing.");
329 }
330 }
331
338
340 {
343 }
344
346 SceneInfoList_t locked_scenes;
347 for (SceneInfoList_i i=fScenes.begin(); i!=fScenes.end(); ++i)
348 {
349 TGLSceneInfo *sinfo = *i;
350 TGLSceneBase *scene = sinfo->GetScene();
351 if (sinfo->GetActive())
352 {
353 if ( ! fRnrCtx->Selection() || scene->GetSelectable())
354 {
355 if ( ! sinfo->GetScene()->TakeLock(kDrawLock))
356 {
357 Warning("TGLViewerBase::PreRender", "locking of scene '%s' failed, skipping.",
358 sinfo->GetScene()->GetName());
359 continue;
360 }
361 locked_scenes.push_back(sinfo);
362 }
363 sinfo->SetupTransformsAndBBox(); // !!! transform not done yet
365 }
366 }
367
370
371 // Make precursory selection of visible scenes.
372 // Only scene bounding-box .vs. camera frustum check performed.
373 fVisScenes.clear();
374 for (SceneInfoList_i i=locked_scenes.begin(); i!=locked_scenes.end(); ++i)
375 {
376 TGLSceneInfo * sinfo = *i;
377 const TGLBoundingBox & bbox = sinfo->GetTransformedBBox();
378 Bool_t visp = (!bbox.IsEmpty() && fCamera->FrustumOverlap(bbox) != Rgl::kOutside);
379 sinfo->ViewCheck(visp);
380 if (visp) {
381 fRnrCtx->SetSceneInfo(sinfo);
382 sinfo->GetScene()->PreDraw(*fRnrCtx);
383 if (sinfo->IsVisible()) {
384 fVisScenes.push_back(sinfo);
385 } else {
386 sinfo->GetScene()->PostDraw(*fRnrCtx);
387 sinfo->GetScene()->ReleaseLock(kDrawLock);
388 }
390 } else {
391 sinfo->GetScene()->ReleaseLock(kDrawLock);
392 }
393 }
394}
395
396////////////////////////////////////////////////////////////////////////////////
397/// Call sub-rendering function render_foo on all currently visible
398/// scenes.
399
400void TGLViewerBase::SubRenderScenes(SubRender_foo render_foo)
401{
402 Int_t nScenes = fVisScenes.size();
403
404 for (Int_t i = 0; i < nScenes; ++i)
405 {
406 TGLSceneInfo* sinfo = fVisScenes[i];
407 TGLSceneBase* scene = sinfo->GetScene();
408 fRnrCtx->SetSceneInfo(sinfo);
409 glPushName(i);
410 scene->PreRender(*fRnrCtx);
411 (scene->*render_foo)(*fRnrCtx);
412 scene->PostRender(*fRnrCtx);
413 glPopName();
415 }
416}
417
418////////////////////////////////////////////////////////////////////////////////
419/// Render all scenes. This is done in two main passes:
420/// - render opaque objects from all scenes
421/// - render transparent objects from all scenes
422
424{
425 RenderOpaque();
427}
428
429////////////////////////////////////////////////////////////////////////////////
430/// Render non-selected objects from all scenes.
431
433{
435
436 TGLCapabilityEnabler blend(GL_BLEND, kTRUE);
437 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
438 glDepthMask(GL_FALSE);
439
441
442 glDepthMask(GL_TRUE);
443
444 TGLUtil::CheckError("TGLViewerBase::RenderNonSelected - pre exit check");
445}
446
447////////////////////////////////////////////////////////////////////////////////
448/// Render selected objects from all scenes.
449
451{
453
454 TGLCapabilityEnabler blend(GL_BLEND, kTRUE);
455 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
456 glDepthMask(GL_FALSE);
457
459
460 glDepthMask(GL_TRUE);
461
462 TGLUtil::CheckError("TGLViewerBase::RenderSelected - pre exit check");
463}
464
465////////////////////////////////////////////////////////////////////////////////
466/// Render selected objects from all scenes for highlight.
467
469{
471
473
474 TGLCapabilityEnabler blend(GL_BLEND, kTRUE);
475 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
476 glDepthMask(GL_FALSE);
477
479
480 glDepthMask(GL_TRUE);
481
483}
484
485////////////////////////////////////////////////////////////////////////////////
486/// Render opaque objects from all scenes.
487
488void TGLViewerBase::RenderOpaque(Bool_t rnr_non_selected, Bool_t rnr_selected)
489{
490 if (rnr_non_selected)
491 {
493 }
494 if (rnr_selected)
495 {
497 }
498
499 TGLUtil::CheckError("TGLViewerBase::RenderOpaque - pre exit check");
500}
501
502////////////////////////////////////////////////////////////////////////////////
503/// Render transparent objects from all scenes.
504
505void TGLViewerBase::RenderTransparent(Bool_t rnr_non_selected, Bool_t rnr_selected)
506{
507 TGLCapabilityEnabler blend(GL_BLEND, kTRUE);
508 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
509 glDepthMask(GL_FALSE);
510
511 if (rnr_non_selected)
512 {
514 }
515 if (rnr_selected)
516 {
518 }
519
520 glDepthMask(GL_TRUE);
521
522 TGLUtil::CheckError("TGLViewerBase::RenderTransparent - pre exit check");
523}
524
525////////////////////////////////////////////////////////////////////////////////
526/// Render overlay objects.
527
529{
530 Int_t nOvl = fOverlay.size();
531 for (Int_t i = 0; i < nOvl; ++i)
532 {
534 if (el->GetState() & state)
535 {
536 if (selection) glPushName(i);
537 el->Render(*fRnrCtx);
538 if (selection) glPopName();
539 }
540 }
541}
542
543////////////////////////////////////////////////////////////////////////////////
544/// Function called after rendering is finished.
545/// Here we just unlock the scenes.
546
548{
549 for (SceneInfoVec_i i = fVisScenes.begin(); i != fVisScenes.end(); ++i)
550 {
551 TGLSceneInfo* sinfo = *i;
552 fRnrCtx->SetSceneInfo(sinfo);
553 sinfo->GetScene()->PostDraw(*fRnrCtx);
555 sinfo->GetScene()->ReleaseLock(kDrawLock);
556 }
558}
559
560////////////////////////////////////////////////////////////////////////////////
561/// Perform minimal initialization for overlay selection.
562/// Here we assume that scene has already been drawn and that
563/// camera and overall bounding box are ok.
564/// Scenes are not locked.
565
567{
569}
570
571////////////////////////////////////////////////////////////////////////////////
572/// Perform cleanup after overlay selection.
573
575{
576}
577
578/**************************************************************************/
579// High-level functions: drawing and picking.
580/**************************************************************************/
581
582
583//______________________________________________________________________
584//void TGLViewerBase::Select(Int_t selX, Int_t selY, Int_t selRadius)
585//{
586 // Perform render-pass in selection mode.
587 // Process the selection results.
588 // For now only in derived classes.
589//}
590
591////////////////////////////////////////////////////////////////////////////////
592/// Process selection record on buffer-position 'recIdx' and
593/// fill the data into 'rec'.
594///
595/// Returns TRUE if scene was demangled and an object identified.
596/// When FALSE is returned it is still possible that scene has been
597/// identified. Check for this if interested in scene-selection.
598///
599/// The select-buffer is taken form fRnrCtx.
600
602{
604 if (recIdx >= sb->GetNRecords())
605 return kFALSE;
606
607 if (sb->SelectRecord(rec, recIdx) < 1)
608 return kFALSE;
609
610 UInt_t sceneIdx = rec.GetItem(0);
611 if (sceneIdx >= fVisScenes.size())
612 return kFALSE;
613
614 TGLSceneInfo* sinfo = fVisScenes[sceneIdx];
615 rec.SetSceneInfo(sinfo);
616 return sinfo->GetScene()->ResolveSelectRecord(rec, 1);
617}
618
619////////////////////////////////////////////////////////////////////////////////
620/// Find next select record that can be resolved, starting from
621/// position 'recIdx'.
622/// 'recIdx' is passed as reference and points to found record in the buffer.
623
625{
627
628 while (recIdx < sb->GetNRecords())
629 {
630 if (ResolveSelectRecord(rec, recIdx))
631 return kTRUE;
632 ++recIdx;
633 }
634 return kFALSE;
635}
636
637////////////////////////////////////////////////////////////////////////////////
638/// Find next select record that can be resolved and whose result is
639/// not transparent, starting from position 'recIdx'.
640/// 'recIdx' is passed as reference and points to found record in the buffer.
641
643{
645
646 while (recIdx < sb->GetNRecords())
647 {
648 if (ResolveSelectRecord(rec, recIdx) && ! rec.GetTransparent())
649 return kTRUE;
650 ++recIdx;
651 }
652 return kFALSE;
653}
654
655////////////////////////////////////////////////////////////////////////////////
656/// Find next overlay-select record that can be resolved, starting from
657/// position 'recIdx'.
658/// 'recIdx' is passed as reference and points to found record in the buffer.
659
661 Int_t & recIdx)
662{
664
665 while (recIdx < sb->GetNRecords())
666 {
667 sb->SelectRecord(rec, recIdx);
668 if (rec.GetItem(0) < fOverlay.size())
669 {
670 rec.SetOvlElement(fOverlay[rec.GetItem(0)]);
671 rec.NextPos();
672 return kTRUE;
673 }
674 ++recIdx;
675 }
676 return kFALSE;
677}
#define GL_TRUE
Definition: GL_glu.h:262
#define GL_FALSE
Definition: GL_glu.h:261
int Int_t
Definition: RtypesCore.h:45
unsigned int UInt_t
Definition: RtypesCore.h:46
const Bool_t kFALSE
Definition: RtypesCore.h:101
bool Bool_t
Definition: RtypesCore.h:63
const Bool_t kTRUE
Definition: RtypesCore.h:100
#define ClassImp(name)
Definition: Rtypes.h:364
R__EXTERN TEnv * gEnv
Definition: TEnv.h:170
void Warning(const char *location, const char *msgfmt,...)
Use this function in warning situations.
Definition: TError.cxx:231
virtual Int_t GetValue(const char *name, Int_t dflt) const
Returns the integer value for a resource.
Definition: TEnv.cxx:491
Concrete class describing an orientated (free) or axis aligned box of 8 vertices.
void SetEmpty()
Set bounding box empty - all vertices at (0,0,0)
Bool_t IsEmpty() const
void MergeAligned(const TGLBoundingBox &other)
Expand current bbox so that it includes other's bbox.
Rgl::EOverlap FrustumOverlap(const TGLBoundingBox &box) const
Calculate overlap (kInside, kOutside, kPartial) of box with camera frustum Camera must have valid fru...
Definition: TGLCamera.cxx:275
virtual void Apply(const TGLBoundingBox &sceneBox, const TGLRect *pickRect=0) const =0
virtual void Setup(const TGLBoundingBox &bbox)=0
Identifier of a shared GL-context.
Definition: TGLContext.h:81
static TGLContextIdentity * GetCurrent()
Find identitfy of current context. Static.
Definition: TGLContext.cxx:538
Bool_t TakeLock(ELock lock) const
Lock the object in mode 'lock'.
Definition: TGLLockable.cxx:32
Bool_t ReleaseLock(ELock lock) const
Release current lock, make sure it the same as the 'lock' argument.
Definition: TGLLockable.cxx:51
Abstract logical shape - a GL 'drawable' - base for all shapes - faceset sphere etc.
TGLScene * GetScene() const
An overlay element.
Definition: TGLOverlay.h:23
virtual void Render(TGLRnrCtx &rnrCtx)=0
EState GetState() const
Definition: TGLOverlay.h:56
Selection record for overlay objects.
void SetOvlElement(TGLOverlayElement *e)
The TGLRnrCtx class aggregates data for a given redering context as needed by various parts of the RO...
Definition: TGLRnrCtx.h:41
void SetSceneInfo(TGLSceneInfo *si)
Definition: TGLRnrCtx.h:168
void SetViewerLOD(Short_t LOD)
Definition: TGLRnrCtx.h:172
TGLSelectBuffer * GetSelectBuffer() const
Definition: TGLRnrCtx.h:231
void SetViewerOLLineW(Float_t w)
Definition: TGLRnrCtx.h:192
void SetViewerWFLineW(Float_t w)
Definition: TGLRnrCtx.h:188
void SetGLCtxIdentity(TGLContextIdentity *cid)
Definition: TGLRnrCtx.h:255
TGLRect * GetPickRectangle()
Return current pick rectangle.
Definition: TGLRnrCtx.cxx:247
void SetViewerStyle(Short_t sty)
Definition: TGLRnrCtx.h:183
void SetViewerClip(TGLClip *p)
Definition: TGLRnrCtx.h:197
void SetCamera(TGLCamera *c)
Definition: TGLRnrCtx.h:167
Bool_t Selection() const
Definition: TGLRnrCtx.h:222
void SetHighlight(Bool_t hil)
Definition: TGLRnrCtx.h:219
TGLContextIdentity * GetGLCtxIdentity() const
Definition: TGLRnrCtx.h:254
Scene base-class – provides basic interface expected by the TGLViewer or its sub-classes:
Definition: TGLSceneBase.h:33
virtual const char * GetName() const
Definition: TGLSceneBase.h:81
virtual void PostDraw(TGLRnrCtx &rnrCtx)
Finalize drawing.
virtual void RenderSelOpaque(TGLRnrCtx &rnrCtx)
Render selected opaque elements.
virtual void PostRender(TGLRnrCtx &rnrCtx)
Perform post-render clean-up.
virtual TGLSceneInfo * CreateSceneInfo(TGLViewerBase *view)
Create a scene-info instance appropriate for this scene class.
void RemoveViewer(TGLViewerBase *viewer)
Remove viewer from the list.
virtual void RenderSelTransp(TGLRnrCtx &rnrCtx)
Render selected transparent elements for highlight.
virtual void PreRender(TGLRnrCtx &rnrCtx)
Perform pre-render initialization - fill rnrCtx with values stored during PreDraw().
virtual Bool_t ResolveSelectRecord(TGLSelectRecord &rec, Int_t curIdx)
Process selection record rec.
virtual void RenderTransp(TGLRnrCtx &rnrCtx)
Render transparent elements.
virtual void RenderSelTranspForHighlight(TGLRnrCtx &rnrCtx)
Render selected transparent elements.
virtual void PreDraw(TGLRnrCtx &rnrCtx)
Perform basic pre-render initialization:
void AddViewer(TGLViewerBase *viewer)
Add viewer to the list.
virtual void RenderOpaque(TGLRnrCtx &rnrCtx)
Render opaque elements.
virtual void RenderSelOpaqueForHighlight(TGLRnrCtx &rnrCtx)
Render selected opaque elements for highlight.
Bool_t GetSelectable() const
Definition: TGLSceneBase.h:128
Base class for extended scene context.
Definition: TGLSceneInfo.h:28
Bool_t ViewCheck() const
Definition: TGLSceneInfo.h:96
void SetupTransformsAndBBox()
Combine information from scene, scene-info and camera (should be optional) into transformation matric...
Bool_t GetActive() const
Definition: TGLSceneInfo.h:87
const TGLBoundingBox & GetTransformedBBox()
Definition: TGLSceneInfo.h:92
Bool_t IsVisible() const
Definition: TGLSceneInfo.h:106
TGLSceneBase * GetScene() const
Definition: TGLSceneInfo.h:84
virtual TGLLogicalShape * FindLogical(TObject *logid) const
Find and return logical shape identified by unique logid.
Definition: TGLScene.cxx:1107
Encapsulates OpenGL select buffer.
Int_t GetNRecords() const
Int_t SelectRecord(TGLSelectRecordBase &rec, Int_t i)
Fill select record rec with data on (sorted) position i.
UInt_t GetItem(Int_t i) const
Standard selection record including information about containing scene and details ob out selected ob...
Bool_t GetTransparent() const
void SetSceneInfo(TGLSceneInfo *si)
static Int_t CheckError(const char *loc)
Check current GL error state, outputting details via ROOT Error method if one.
Definition: TGLUtil.cxx:1640
Base class for GL viewers.
Definition: TGLViewerBase.h:37
void SceneDestructing(TGLSceneBase *scene)
Remove scene, its scene-info is deleted.
OverlayElmVec_t fOverlay
Definition: TGLViewerBase.h:79
virtual void RenderTransparent(Bool_t rnr_non_selected=kTRUE, Bool_t rnr_selected=kTRUE)
Render transparent objects from all scenes.
virtual void DeleteOverlayElements(TGLOverlayElement::ERole r)
Delete overlay elements.
virtual void Changed()
virtual void PreRenderOverlaySelection()
Perform minimal initialization for overlay selection.
SceneInfoList_t fScenes
Definition: TGLViewerBase.h:74
TGLRnrCtx * fRnrCtx
Definition: TGLViewerBase.h:62
SceneInfoVec_t fVisScenes
Definition: TGLViewerBase.h:75
TGLCamera * fCamera
Definition: TGLViewerBase.h:64
virtual ~TGLViewerBase()
Destructor.
virtual void RenderSelected()
Render selected objects from all scenes.
void SubRenderScenes(SubRender_foo render_foo)
Call sub-rendering function render_foo on all currently visible scenes.
Bool_t FindClosestOpaqueRecord(TGLSelectRecord &rec, Int_t &recIdx)
Find next select record that can be resolved and whose result is not transparent, starting from posit...
virtual void ResetSceneInfos()
Force rebuild of view-dependent scene-info structures.
TGLSceneInfo * AddScene(TGLSceneBase *scene)
Add new scene, appropriate scene-info is created.
TGLLogicalShape * FindLogicalInScenes(TObject *id)
Find logical-shape representing object id in the list of scenes.
std::vector< TGLOverlayElement * > OverlayElmVec_t
Definition: TGLViewerBase.h:49
virtual void RemoveOverlayElement(TGLOverlayElement *el)
Remove overlay element.
TGLClip * fClip
Definition: TGLViewerBase.h:65
virtual void RenderOverlay(Int_t state, Bool_t selection)
Render overlay objects.
SceneInfoVec_t::iterator SceneInfoVec_i
Definition: TGLViewerBase.h:47
TGLSceneInfo * GetSceneInfo(TGLSceneBase *scene)
Find scene-info corresponding to scene.
Short_t fStyle
Definition: TGLViewerBase.h:67
virtual void Render()
Render all scenes.
virtual void PostRenderOverlaySelection()
Perform cleanup after overlay selection.
virtual void PreRender()
Initialize render-context, setup camera, GL, render-area.
virtual void PostRender()
Function called after rendering is finished.
virtual void SetupClipObject()
Setup clip-object. Protected virtual method.
SceneInfoList_i FindScene(TGLSceneBase *scene)
Find scene-info corresponding to scene.
Bool_t FindClosestOverlayRecord(TGLOvlSelectRecord &rec, Int_t &recIdx)
Find next overlay-select record that can be resolved, starting from position 'recIdx'.
virtual void MergeSceneBBoxes(TGLBoundingBox &bbox)
Merge bounding-boxes of all active registered scenes.
OverlayElmVec_t::iterator OverlayElmVec_i
Definition: TGLViewerBase.h:50
void RemoveAllScenes()
Remove all scenes from the viewer, their scene-infos are deleted.
Float_t fOLLineW
Definition: TGLViewerBase.h:69
Bool_t fResetSceneInfosOnRender
Definition: TGLViewerBase.h:71
TGLBoundingBox fOverallBoundingBox
Definition: TGLViewerBase.h:77
void RemoveScene(TGLSceneBase *scene)
Remove scene from the viewer, its scene-info is deleted.
std::list< TGLSceneInfo * > SceneInfoList_t
Definition: TGLViewerBase.h:43
virtual void DeleteOverlayAnnotations()
Delete overlay elements that are annotations.
virtual void RenderNonSelected()
Render non-selected objects from all scenes.
Float_t fWFLineW
Definition: TGLViewerBase.h:68
Bool_t ResolveSelectRecord(TGLSelectRecord &rec, Int_t recIdx)
Process selection record on buffer-position 'recIdx' and fill the data into 'rec'.
virtual void RenderSelectedForHighlight()
Render selected objects from all scenes for highlight.
virtual void RenderOpaque(Bool_t rnr_non_selected=kTRUE, Bool_t rnr_selected=kTRUE)
Render opaque objects from all scenes.
virtual const char * LockIdStr() const
Name to print in locking output.
SceneInfoList_t::iterator SceneInfoList_i
Definition: TGLViewerBase.h:44
virtual void AddOverlayElement(TGLOverlayElement *el)
Add overlay element.
Bool_t FindClosestRecord(TGLSelectRecord &rec, Int_t &recIdx)
Find next select record that can be resolved, starting from position 'recIdx'.
Mother of all ROOT objects.
Definition: TObject.h:37
@ kOutside
Definition: TGLUtil.h:38