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0027750: Visualization, V3d_View - remove unused functionality ZClipping and ZCueing
[occt.git] / src / OpenGl / OpenGl_View.cxx
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1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
3// Copyright (c) 2011-2014 OPEN CASCADE SAS
4//
5// This file is part of Open CASCADE Technology software library.
6//
7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
12//
13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
15
16#include <OpenGl_View.hxx>
17
18#include <Aspect_RenderingContext.hxx>
19#include <Aspect_Window.hxx>
20#include <Graphic3d_AspectFillArea3d.hxx>
21#include <Graphic3d_Texture2Dmanual.hxx>
22#include <Graphic3d_TextureEnv.hxx>
23#include <Graphic3d_Mat4d.hxx>
24#include <NCollection_Mat4.hxx>
25#include <OpenGl_Context.hxx>
26#include <OpenGl_FrameBuffer.hxx>
27#include <OpenGl_GlCore11.hxx>
28#include <OpenGl_GraduatedTrihedron.hxx>
29#include <OpenGl_GraphicDriver.hxx>
30#include <OpenGl_ShaderManager.hxx>
31#include <OpenGl_Texture.hxx>
32#include <OpenGl_Trihedron.hxx>
33#include <OpenGl_Window.hxx>
34#include <OpenGl_Workspace.hxx>
35#include <Standard_CLocaleSentry.hxx>
36
37IMPLEMENT_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView)
38
39#ifdef HAVE_GL2PS
40#include <gl2ps.h>
41#endif
42
43// =======================================================================
44// function : Constructor
45// purpose :
46// =======================================================================
47OpenGl_View::OpenGl_View (const Handle(Graphic3d_StructureManager)& theMgr,
48 const Handle(OpenGl_GraphicDriver)& theDriver,
49 const Handle(OpenGl_Caps)& theCaps,
50 Standard_Boolean& theDeviceLostFlag,
51 OpenGl_StateCounter* theCounter)
52: Graphic3d_CView (theMgr),
53 myDriver (theDriver.operator->()),
54 myCaps (theCaps),
55 myDeviceLostFlag (theDeviceLostFlag),
56 myWasRedrawnGL (Standard_False),
57 myCulling (Standard_True),
58 myShadingModel (Graphic3d_TOSM_FACET),
59 myBackfacing (Graphic3d_TOBM_AUTOMATIC),
60 myBgColor (Quantity_NOC_BLACK),
61 myCamera (new Graphic3d_Camera()),
62 myUseGLLight (Standard_True),
63 myToShowTrihedron (false),
64 myToShowGradTrihedron (false),
65 myStateCounter (theCounter),
66 myLastLightSourceState (0, 0),
67 myFboColorFormat (GL_RGBA8),
68 myFboDepthFormat (GL_DEPTH24_STENCIL8),
69 myToFlipOutput (Standard_False),
70 myFrameCounter (0),
71 myHasFboBlit (Standard_True),
72 myToDisableMSAA (Standard_False),
73 myTransientDrawToFront (Standard_True),
74 myBackBufferRestored (Standard_False),
75 myIsImmediateDrawn (Standard_False),
76 myTextureParams (new OpenGl_AspectFace()),
77 myBgGradientArray (new OpenGl_BackgroundArray (Graphic3d_TOB_GRADIENT)),
78 myBgTextureArray (new OpenGl_BackgroundArray (Graphic3d_TOB_TEXTURE)),
79 // ray-tracing fields initialization
80 myRaytraceInitStatus (OpenGl_RT_NONE),
81 myIsRaytraceDataValid (Standard_False),
82 myIsRaytraceWarnTextures (Standard_False),
83 myToUpdateEnvironmentMap (Standard_False),
84 myLayerListState (0)
85{
86 myWorkspace = new OpenGl_Workspace (this, NULL);
87
88 OpenGl_Light aLight;
89 aLight.Type = Graphic3d_TOLS_AMBIENT;
90 aLight.IsHeadlight = Standard_False;
91 aLight.Color.r() = 1.;
92 aLight.Color.g() = 1.;
93 aLight.Color.b() = 1.;
94 myNoShadingLight.Append (aLight);
95
96 myCurrLightSourceState = myStateCounter->Increment();
97 myMainSceneFbos[0] = new OpenGl_FrameBuffer();
98 myMainSceneFbos[1] = new OpenGl_FrameBuffer();
99 myImmediateSceneFbos[0] = new OpenGl_FrameBuffer();
100 myImmediateSceneFbos[1] = new OpenGl_FrameBuffer();
101 myOpenGlFBO = new OpenGl_FrameBuffer();
102 myOpenGlFBO2 = new OpenGl_FrameBuffer();
103 myRaytraceFBO1[0] = new OpenGl_FrameBuffer();
104 myRaytraceFBO1[1] = new OpenGl_FrameBuffer();
105 myRaytraceFBO2[0] = new OpenGl_FrameBuffer();
106 myRaytraceFBO2[1] = new OpenGl_FrameBuffer();
107}
108
109// =======================================================================
110// function : Destructor
111// purpose :
112// =======================================================================
113OpenGl_View::~OpenGl_View()
114{
115 ReleaseGlResources (NULL); // ensure ReleaseGlResources() was called within valid context
116 OpenGl_Element::Destroy (NULL, myBgGradientArray);
117 OpenGl_Element::Destroy (NULL, myBgTextureArray);
118 OpenGl_Element::Destroy (NULL, myTextureParams);
119}
120
121// =======================================================================
122// function : ReleaseGlResources
123// purpose :
124// =======================================================================
125void OpenGl_View::ReleaseGlResources (const Handle(OpenGl_Context)& theCtx)
126{
127 myTrihedron .Release (theCtx.operator->());
128 myGraduatedTrihedron.Release (theCtx.operator->());
129
130 if (!myTextureEnv.IsNull())
131 {
132 theCtx->DelayedRelease (myTextureEnv);
133 myTextureEnv.Nullify();
134 }
135
136 if (myTextureParams != NULL)
137 {
138 myTextureParams->Release (theCtx.operator->());
139 }
140 if (myBgGradientArray != NULL)
141 {
142 myBgGradientArray->Release (theCtx.operator->());
143 }
144 if (myBgTextureArray != NULL)
145 {
146 myBgTextureArray->Release (theCtx.operator->());
147 }
148
149 myMainSceneFbos[0] ->Release (theCtx.operator->());
150 myMainSceneFbos[1] ->Release (theCtx.operator->());
151 myImmediateSceneFbos[0]->Release (theCtx.operator->());
152 myImmediateSceneFbos[1]->Release (theCtx.operator->());
153 myOpenGlFBO ->Release (theCtx.operator->());
154 myOpenGlFBO2 ->Release (theCtx.operator->());
155 myFullScreenQuad .Release (theCtx.operator->());
156 myFullScreenQuadFlip .Release (theCtx.operator->());
157
158 releaseRaytraceResources (theCtx);
159}
160
161// =======================================================================
162// function : Remove
163// purpose :
164// =======================================================================
165void OpenGl_View::Remove()
166{
167 if (IsRemoved())
168 {
169 return;
170 }
171
172 myDriver->RemoveView (this);
173 myWindow.Nullify();
174
175 Graphic3d_CView::Remove();
176}
177
178// =======================================================================
179// function : SetTextureEnv
180// purpose :
181// =======================================================================
182void OpenGl_View::SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv)
183{
184 Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
185 if (!aCtx.IsNull() && !myTextureEnv.IsNull())
186 {
187 aCtx->DelayedRelease (myTextureEnv);
188 }
189
190 myToUpdateEnvironmentMap = Standard_True;
191 myTextureEnvData = theTextureEnv;
192 myTextureEnv.Nullify();
193 initTextureEnv (aCtx);
194}
195
196// =======================================================================
197// function : initTextureEnv
198// purpose :
199// =======================================================================
200void OpenGl_View::initTextureEnv (const Handle(OpenGl_Context)& theContext)
201{
202 if (myTextureEnvData.IsNull()
203 || theContext.IsNull()
204 || !theContext->MakeCurrent())
205 {
206 return;
207 }
208
209 myTextureEnv = new OpenGl_Texture (myTextureEnvData->GetParams());
210 Handle(Image_PixMap) anImage = myTextureEnvData->GetImage();
211 if (!anImage.IsNull())
212 {
213 myTextureEnv->Init (theContext, *anImage.operator->(), myTextureEnvData->Type());
214 }
215}
216
217// =======================================================================
218// function : SetImmediateModeDrawToFront
219// purpose :
220// =======================================================================
221Standard_Boolean OpenGl_View::SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer)
222{
223 const Standard_Boolean aPrevMode = myTransientDrawToFront;
224 myTransientDrawToFront = theDrawToFrontBuffer;
225 return aPrevMode;
226}
227
228// =======================================================================
229// function : SetWindow
230// purpose :
231// =======================================================================
232void OpenGl_View::SetWindow (const Handle(Aspect_Window)& theWindow,
233 const Aspect_RenderingContext theContext)
234{
235 myWindow = myDriver->CreateRenderWindow (theWindow, theContext);
236 Standard_ASSERT_RAISE (!myWindow.IsNull(),
237 "OpenGl_View::SetWindow, "
238 "Failed to create OpenGl window.");
239
240 myWorkspace = new OpenGl_Workspace (this, myWindow);
241 myWorldViewProjState.Reset();
242 myToUpdateEnvironmentMap = Standard_True;
243 myHasFboBlit = Standard_True;
244 Invalidate();
245
246 // Environment texture resource does not support lazy initialization.
247 initTextureEnv (myWorkspace->GetGlContext());
248}
249
250// =======================================================================
251// function : Resized
252// purpose :
253// =======================================================================
254void OpenGl_View::Resized()
255{
256 if (myWindow.IsNull())
257 return;
258
259 myWindow->Resize();
260}
261
262// =======================================================================
263// function : TriedronDisplay
264// purpose :
265// =======================================================================
266void OpenGl_View::TriedronDisplay (const Aspect_TypeOfTriedronPosition thePosition,
267 const Quantity_NameOfColor theColor,
268 const Standard_Real theScale,
269 const Standard_Boolean theAsWireframe)
270{
271 myToShowTrihedron = true;
272 myTrihedron.SetWireframe (theAsWireframe);
273 myTrihedron.SetPosition (thePosition);
274 myTrihedron.SetScale (theScale);
275 myTrihedron.SetLabelsColor (theColor);
276}
277
278// =======================================================================
279// function : TriedronErase
280// purpose :
281// =======================================================================
282void OpenGl_View::TriedronErase()
283{
284 myToShowTrihedron = false;
285 myTrihedron.Release (myWorkspace->GetGlContext().operator->());
286}
287
288// =======================================================================
289// function : ZBufferTriedronSetup
290// purpose :
291// =======================================================================
292void OpenGl_View::ZBufferTriedronSetup (const Quantity_NameOfColor theXColor,
293 const Quantity_NameOfColor theYColor,
294 const Quantity_NameOfColor theZColor,
295 const Standard_Real theSizeRatio,
296 const Standard_Real theAxisDiametr,
297 const Standard_Integer theNbFacettes)
298{
299 myTrihedron.SetArrowsColors (theXColor, theYColor, theZColor);
300 myTrihedron.SetSizeRatio (theSizeRatio);
301 myTrihedron.SetNbFacets (theNbFacettes);
302 myTrihedron.SetArrowDiameter (theAxisDiametr);
303}
304
305// =======================================================================
306// function : TriedronEcho
307// purpose :
308// =======================================================================
309void OpenGl_View::TriedronEcho (const Aspect_TypeOfTriedronEcho /*theType*/)
310{
311 // do nothing
312}
313
314// =======================================================================
315// function : SetMinMaxValuesCallback
316// purpose :
317// =======================================================================
318static void SetMinMaxValuesCallback (Graphic3d_CView* theView)
319{
320 OpenGl_View* aView = dynamic_cast<OpenGl_View*>(theView);
321 if (aView == NULL)
322 return;
323
324 Bnd_Box aBox = theView->MinMaxValues();
325 if (!aBox.IsVoid())
326 {
327 gp_Pnt aMin = aBox.CornerMin();
328 gp_Pnt aMax = aBox.CornerMax();
329
330 Graphic3d_Vec3 aMinVec ((Standard_ShortReal )aMin.X(), (Standard_ShortReal )aMin.Y(), (Standard_ShortReal )aMin.Z());
331 Graphic3d_Vec3 aMaxVec ((Standard_ShortReal )aMax.X(), (Standard_ShortReal )aMax.Y(), (Standard_ShortReal )aMax.Z());
332 aView->GraduatedTrihedronMinMaxValues (aMinVec, aMaxVec);
333 }
334}
335
336// =======================================================================
337// function : GraduatedTrihedronDisplay
338// purpose :
339// =======================================================================
340void OpenGl_View::GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData)
341{
342 myGTrihedronData = theTrihedronData;
343 myGTrihedronData.PtrView = this;
344 myGTrihedronData.CubicAxesCallback = SetMinMaxValuesCallback;
345 myGraduatedTrihedron.SetValues (myGTrihedronData);
346 myToShowGradTrihedron = true;
347}
348
349// =======================================================================
350// function : GraduatedTrihedronErase
351// purpose :
352// =======================================================================
353void OpenGl_View::GraduatedTrihedronErase()
354{
355 myGTrihedronData.PtrView = NULL;
356 myGraduatedTrihedron.Release (myWorkspace->GetGlContext().operator->());
357 myToShowGradTrihedron = false;
358}
359
360// =======================================================================
361// function : GraduatedTrihedronMinMaxValues
362// purpose :
363// =======================================================================
364void OpenGl_View::GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax)
365{
366 myGraduatedTrihedron.SetMinMax (theMin, theMax);
367}
368
369// =======================================================================
370// function : BufferDump
371// purpose :
372// =======================================================================
373Standard_Boolean OpenGl_View::BufferDump (Image_PixMap& theImage, const Graphic3d_BufferType& theBufferType)
374{
375 return myWorkspace->BufferDump (myFBO, theImage, theBufferType);
376}
377
378// =======================================================================
379// function : Background
380// purpose :
381// =======================================================================
382Aspect_Background OpenGl_View::Background() const
383{
384 return Aspect_Background (myBgColor.GetRGB());
385}
386
387// =======================================================================
388// function : SetBackground
389// purpose :
390// =======================================================================
391void OpenGl_View::SetBackground (const Aspect_Background& theBackground)
392{
393 myBgColor.SetRGB (theBackground.Color());
394}
395
396// =======================================================================
397// function : GradientBackground
398// purpose :
399// =======================================================================
400Aspect_GradientBackground OpenGl_View::GradientBackground() const
401{
402 Quantity_Color aColor1, aColor2;
403 aColor1.SetValues (myBgGradientArray->GradientColor (0).r(),
404 myBgGradientArray->GradientColor (0).g(),
405 myBgGradientArray->GradientColor (0).b(), Quantity_TOC_RGB);
406 aColor2.SetValues (myBgGradientArray->GradientColor (1).r(),
407 myBgGradientArray->GradientColor (1).g(),
408 myBgGradientArray->GradientColor (1).b(), Quantity_TOC_RGB);
409 return Aspect_GradientBackground (aColor1, aColor2, myBgGradientArray->GradientFillMethod());
410}
411
412// =======================================================================
413// function : SetGradientBackground
414// purpose :
415// =======================================================================
416void OpenGl_View::SetGradientBackground (const Aspect_GradientBackground& theBackground)
417{
418 Quantity_Color aColor1, aColor2;
419 theBackground.Colors (aColor1, aColor2);
420 myBgGradientArray->SetGradientParameters (aColor1, aColor2, theBackground.BgGradientFillMethod());
421}
422
423// =======================================================================
424// function : SetBackgroundImage
425// purpose :
426// =======================================================================
427void OpenGl_View::SetBackgroundImage (const TCollection_AsciiString& theFilePath)
428{
429 // Prepare aspect for texture storage
430 myBackgroundImagePath = theFilePath;
431 Handle(Graphic3d_AspectFillArea3d) anAspect = new Graphic3d_AspectFillArea3d();
432 Handle(Graphic3d_Texture2Dmanual) aTextureMap = new Graphic3d_Texture2Dmanual (TCollection_AsciiString (theFilePath));
433 aTextureMap->EnableRepeat();
434 aTextureMap->DisableModulate();
435 aTextureMap->GetParams()->SetGenMode (Graphic3d_TOTM_MANUAL,
436 Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f),
437 Graphic3d_Vec4 (0.0f, 0.0f, 0.0f, 0.0f));
438 anAspect->SetTextureMap (aTextureMap);
439 anAspect->SetInteriorStyle (Aspect_IS_SOLID);
440 anAspect->SetSuppressBackFaces (false);
441 // Enable texture mapping
442 if (aTextureMap->IsDone())
443 {
444 anAspect->SetTextureMapOn();
445 }
446 else
447 {
448 anAspect->SetTextureMapOff();
449 return;
450 }
451
452 // Set texture parameters
453 myTextureParams->SetAspect (anAspect);
454}
455
456// =======================================================================
457// function : BackgroundImageStyle
458// purpose :
459// =======================================================================
460Aspect_FillMethod OpenGl_View::BackgroundImageStyle() const
461{
462 return myBgTextureArray->TextureFillMethod();
463}
464
465// =======================================================================
466// function : SetBackgroundImageStyle
467// purpose :
468// =======================================================================
469void OpenGl_View::SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle)
470{
471 myBgTextureArray->SetTextureFillMethod (theFillStyle);
472}
473
474//=======================================================================
475//function : AddZLayer
476//purpose :
477//=======================================================================
478void OpenGl_View::AddZLayer (const Graphic3d_ZLayerId theLayerId)
479{
480 myZLayers.AddLayer (theLayerId);
481}
482
483//=======================================================================
484//function : RemoveZLayer
485//purpose :
486//=======================================================================
487void OpenGl_View::RemoveZLayer (const Graphic3d_ZLayerId theLayerId)
488{
489 myZLayers.RemoveLayer (theLayerId);
490}
491
492//=======================================================================
493//function : SetZLayerSettings
494//purpose :
495//=======================================================================
496void OpenGl_View::SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
497 const Graphic3d_ZLayerSettings& theSettings)
498{
499 myZLayers.SetLayerSettings (theLayerId, theSettings);
500}
501
502//=======================================================================
503//function : ZLayerMax
504//purpose :
505//=======================================================================
506Standard_Integer OpenGl_View::ZLayerMax() const
507{
508 Standard_Integer aLayerMax = Graphic3d_ZLayerId_Default;
509 for (OpenGl_LayerSeqIds::Iterator aMapIt(myZLayers.LayerIDs()); aMapIt.More(); aMapIt.Next())
510 {
511 aLayerMax = Max (aLayerMax, aMapIt.Value());
512 }
513
514 return aLayerMax;
515}
516
517//=======================================================================
518//function : InvalidateZLayerBoundingBox
519//purpose :
520//=======================================================================
521void OpenGl_View::InvalidateZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId) const
522{
523 if (myZLayers.LayerIDs().IsBound (theLayerId))
524 {
525 myZLayers.Layer (theLayerId).InvalidateBoundingBox();
526 }
527 else
528 {
529 for (Standard_Integer aLayerId = Graphic3d_ZLayerId_Default; aLayerId < ZLayerMax(); ++aLayerId)
530 {
531 if (myZLayers.LayerIDs().IsBound (aLayerId))
532 {
533 const OpenGl_Layer& aLayer = myZLayers.Layer (aLayerId);
534 if (aLayer.NbOfTransformPersistenceObjects() > 0)
535 {
536 aLayer.InvalidateBoundingBox();
537 }
538 }
539 }
540 }
541}
542
543//=======================================================================
544//function : ZLayerBoundingBox
545//purpose :
546//=======================================================================
547Graphic3d_BndBox4f OpenGl_View::ZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId,
548 const Handle(Graphic3d_Camera)& theCamera,
549 const Standard_Integer theWindowWidth,
550 const Standard_Integer theWindowHeight,
551 const Standard_Boolean theToIgnoreInfiniteFlag) const
552{
553 if (myZLayers.LayerIDs().IsBound (theLayerId))
554 {
555 return myZLayers.Layer (theLayerId).BoundingBox (Identification(),
556 theCamera,
557 theWindowWidth,
558 theWindowHeight,
559 theToIgnoreInfiniteFlag);
560 }
561
562 return Graphic3d_BndBox4f();
563}
564
565//=======================================================================
566//function : considerZoomPersistenceObjects
567//purpose :
568//=======================================================================
569Standard_Real OpenGl_View::considerZoomPersistenceObjects (const Graphic3d_ZLayerId theLayerId,
570 const Handle(Graphic3d_Camera)& theCamera,
571 const Standard_Integer theWindowWidth,
572 const Standard_Integer theWindowHeight,
573 const Standard_Boolean theToIgnoreInfiniteFlag) const
574{
575 if (myZLayers.LayerIDs().IsBound (theLayerId))
576 {
577 return myZLayers.Layer (theLayerId).considerZoomPersistenceObjects (Identification(),
578 theCamera,
579 theWindowWidth,
580 theWindowHeight,
581 theToIgnoreInfiniteFlag);
582 }
583
584 return 1.0;
585}
586
587//=======================================================================
588//function : FBO
589//purpose :
590//=======================================================================
591Handle(Standard_Transient) OpenGl_View::FBO() const
592{
593 return Handle(Standard_Transient)(myFBO);
594}
595
596//=======================================================================
597//function : SetFBO
598//purpose :
599//=======================================================================
600void OpenGl_View::SetFBO (const Handle(Standard_Transient)& theFbo)
601{
602 myFBO = Handle(OpenGl_FrameBuffer)::DownCast (theFbo);
603}
604
605//=======================================================================
606//function : FBOCreate
607//purpose :
608//=======================================================================
609Handle(Standard_Transient) OpenGl_View::FBOCreate (const Standard_Integer theWidth,
610 const Standard_Integer theHeight)
611{
612 return myWorkspace->FBOCreate (theWidth, theHeight);
613}
614
615//=======================================================================
616//function : FBORelease
617//purpose :
618//=======================================================================
619void OpenGl_View::FBORelease (Handle(Standard_Transient)& theFbo)
620{
621 Handle(OpenGl_FrameBuffer) aFrameBuffer = Handle(OpenGl_FrameBuffer)::DownCast (theFbo);
622 if (aFrameBuffer.IsNull())
623 {
624 return;
625 }
626
627 myWorkspace->FBORelease (aFrameBuffer);
628 theFbo.Nullify();
629}
630
631//=======================================================================
632//function : FBOGetDimensions
633//purpose :
634//=======================================================================
635void OpenGl_View::FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
636 Standard_Integer& theWidth,
637 Standard_Integer& theHeight,
638 Standard_Integer& theWidthMax,
639 Standard_Integer& theHeightMax)
640{
641 const Handle(OpenGl_FrameBuffer) aFrameBuffer = Handle(OpenGl_FrameBuffer)::DownCast (theFbo);
642 if (aFrameBuffer.IsNull())
643 {
644 return;
645 }
646
647 theWidth = aFrameBuffer->GetVPSizeX(); // current viewport size
648 theHeight = aFrameBuffer->GetVPSizeY();
649 theWidthMax = aFrameBuffer->GetSizeX(); // texture size
650 theHeightMax = aFrameBuffer->GetSizeY();
651}
652
653//=======================================================================
654//function : FBOChangeViewport
655//purpose :
656//=======================================================================
657void OpenGl_View::FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
658 const Standard_Integer theWidth,
659 const Standard_Integer theHeight)
660{
661 const Handle(OpenGl_FrameBuffer) aFrameBuffer = Handle(OpenGl_FrameBuffer)::DownCast (theFbo);
662 if (aFrameBuffer.IsNull())
663 {
664 return;
665 }
666
667 aFrameBuffer->ChangeViewport (theWidth, theHeight);
668}
669
670// =======================================================================
671// function : Export
672// purpose :
673// =======================================================================
674#ifdef HAVE_GL2PS
675Standard_Boolean OpenGl_View::Export (const Standard_CString theFileName,
676 const Graphic3d_ExportFormat theFormat,
677 const Graphic3d_SortType theSortType)
678{
679 // gl2psBeginPage() will call OpenGL functions
680 // so we should activate correct GL context before redraw scene call
681 if (!myWorkspace->Activate())
682 {
683 return Standard_False;
684 }
685
686 Standard_Integer aFormat = -1;
687 Standard_Integer aSortType = Graphic3d_ST_BSP_Tree;
688 switch (theFormat)
689 {
690 case Graphic3d_EF_PostScript:
691 aFormat = GL2PS_PS;
692 break;
693 case Graphic3d_EF_EnhPostScript:
694 aFormat = GL2PS_EPS;
695 break;
696 case Graphic3d_EF_TEX:
697 aFormat = GL2PS_TEX;
698 break;
699 case Graphic3d_EF_PDF:
700 aFormat = GL2PS_PDF;
701 break;
702 case Graphic3d_EF_SVG:
703 aFormat = GL2PS_SVG;
704 break;
705 case Graphic3d_EF_PGF:
706 aFormat = GL2PS_PGF;
707 break;
708 case Graphic3d_EF_EMF:
709 //aFormat = GL2PS_EMF;
710 aFormat = GL2PS_PGF + 1; // 6
711 break;
712 default:
713 // unsupported format
714 return Standard_False;
715 }
716
717 switch (theSortType)
718 {
719 case Graphic3d_ST_Simple:
720 aSortType = GL2PS_SIMPLE_SORT;
721 break;
722 case Graphic3d_ST_BSP_Tree:
723 aSortType = GL2PS_BSP_SORT;
724 break;
725 }
726
727 GLint aViewport[4];
728 aViewport[0] = 0;
729 aViewport[1] = 0;
730 aViewport[2] = myWindow->Width();
731 aViewport[3] = myWindow->Height();
732
733 GLint aBufferSize = 1024 * 1024;
734 GLint anErrCode = GL2PS_SUCCESS;
735
736 // gl2ps uses standard write functions and do not check locale
737 Standard_CLocaleSentry aLocaleSentry;
738
739 while (aBufferSize > 0)
740 {
741 // current patch for EMF support in gl2ps uses WinAPI functions to create file
742 FILE* aFileH = (theFormat != Graphic3d_EF_EMF) ? fopen (theFileName, "wb") : NULL;
743 anErrCode = gl2psBeginPage ("", "", aViewport, aFormat, aSortType,
744 GL2PS_DRAW_BACKGROUND | GL2PS_OCCLUSION_CULL | GL2PS_BEST_ROOT/* | GL2PS_SIMPLE_LINE_OFFSET*/,
745 GL_RGBA, 0, NULL,
746 0, 0, 0, aBufferSize, aFileH, theFileName);
747 if (anErrCode != GL2PS_SUCCESS)
748 {
749 // initialization failed
750 if (aFileH != NULL)
751 fclose (aFileH);
752 break;
753 }
754 Redraw();
755
756 anErrCode = gl2psEndPage();
757 if (aFileH != NULL)
758 fclose (aFileH);
759
760 if (anErrCode == GL2PS_OVERFLOW)
761 aBufferSize *= 2;
762 else
763 break;
764 }
765 return anErrCode == GL2PS_SUCCESS;
766}
767#else
768Standard_Boolean OpenGl_View::Export (const Standard_CString /*theFileName*/,
769 const Graphic3d_ExportFormat /*theFormat*/,
770 const Graphic3d_SortType /*theSortType*/)
771{
772 return Standard_False;
773}
774#endif
775
776//=======================================================================
777//function : displayStructure
778//purpose :
779//=======================================================================
780void OpenGl_View::displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
781 const Standard_Integer thePriority)
782{
783 const OpenGl_Structure* aStruct = reinterpret_cast<const OpenGl_Structure*> (theStructure.operator->());
784 const Graphic3d_ZLayerId aZLayer = aStruct->ZLayer();
785 myZLayers.AddStructure (aStruct, aZLayer, thePriority);
786}
787
788//=======================================================================
789//function : eraseStructure
790//purpose :
791//=======================================================================
792void OpenGl_View::eraseStructure (const Handle(Graphic3d_CStructure)& theStructure)
793{
794 const OpenGl_Structure* aStruct = reinterpret_cast<const OpenGl_Structure*> (theStructure.operator->());
795 myZLayers.RemoveStructure (aStruct);
796}
797
798//=======================================================================
799//function : changeZLayer
800//purpose :
801//=======================================================================
802void OpenGl_View::changeZLayer (const Handle(Graphic3d_CStructure)& theStructure,
803 const Graphic3d_ZLayerId theNewLayerId)
804{
805 const Graphic3d_ZLayerId anOldLayer = theStructure->ZLayer();
806 const OpenGl_Structure* aStruct = reinterpret_cast<const OpenGl_Structure*> (theStructure.operator->());
807 myZLayers.ChangeLayer (aStruct, anOldLayer, theNewLayerId);
808 Update (Aspect_TOU_WAIT, anOldLayer);
809 Update (Aspect_TOU_WAIT, theNewLayerId);
810}
811
812//=======================================================================
813//function : changePriority
814//purpose :
815//=======================================================================
816void OpenGl_View::changePriority (const Handle(Graphic3d_CStructure)& theStructure,
817 const Standard_Integer theNewPriority)
818{
819 const Graphic3d_ZLayerId aLayerId = theStructure->ZLayer();
820 const OpenGl_Structure* aStruct = reinterpret_cast<const OpenGl_Structure*> (theStructure.operator->());
821 myZLayers.ChangePriority (aStruct, aLayerId, theNewPriority);
822}
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