1 // Created on: 2011-09-20
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
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.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #include <NCollection_Mat4.hxx>
18 #include <OpenGl_Context.hxx>
19 #include <OpenGl_GlCore11.hxx>
20 #include <OpenGl_GraduatedTrihedron.hxx>
21 #include <OpenGl_GraphicDriver.hxx>
22 #include <OpenGl_ShaderManager.hxx>
23 #include <OpenGl_Texture.hxx>
24 #include <OpenGl_Trihedron.hxx>
25 #include <OpenGl_transform_persistence.hxx>
26 #include <OpenGl_View.hxx>
27 #include <OpenGl_Workspace.hxx>
29 #include <Graphic3d_TextureEnv.hxx>
30 #include <Graphic3d_Mat4d.hxx>
32 IMPLEMENT_STANDARD_HANDLE(OpenGl_View,MMgt_TShared)
33 IMPLEMENT_STANDARD_RTTIEXT(OpenGl_View,MMgt_TShared)
35 /*----------------------------------------------------------------------*/
37 static const OPENGL_BG_TEXTURE myDefaultBgTexture = { 0, 0, 0, Aspect_FM_CENTERED };
38 static const OPENGL_BG_GRADIENT myDefaultBgGradient = { {{ 0.F, 0.F, 0.F, 1.F }}, {{ 0.F, 0.F, 0.F, 1.F }}, Aspect_GFM_NONE };
39 static const Tmatrix3 myDefaultMatrix = { { 1.F, 0.F, 0.F, 0.F }, { 0.F, 1.F, 0.F, 0.F }, { 0.F, 0.F, 1.F, 0.F }, { 0.F, 0.F, 0.F, 1.F } };
40 static const OPENGL_ZCLIP myDefaultZClip = { { Standard_True, 0.F }, { Standard_True, 1.F } };
42 static const OPENGL_FOG myDefaultFog = { Standard_False, 0.F, 1.F, { { 0.F, 0.F, 0.F, 1.F } } };
43 static const TEL_TRANSFORM_PERSISTENCE myDefaultTransPers = { 0, 0.F, 0.F, 0.F };
44 static const GLdouble THE_IDENTITY_MATRIX[4][4] =
52 /*----------------------------------------------------------------------*/
54 OpenGl_View::OpenGl_View (const CALL_DEF_VIEWCONTEXT &AContext,
55 OpenGl_StateCounter* theCounter)
56 : mySurfaceDetail(Visual3d_TOD_NONE),
58 myBgTexture(myDefaultBgTexture),
59 myBgGradient(myDefaultBgGradient),
60 //shield_indicator = TOn,
61 //shield_colour = { { 0.F, 0.F, 0.F, 1.F } },
62 //border_indicator = TOff,
63 //border_colour = { { 0.F, 0.F, 0.F, 1.F } },
64 //active_status = TOn,
65 myZClip(myDefaultZClip),
66 myCamera(AContext.Camera),
69 myGraduatedTrihedron(NULL),
70 myVisualization(AContext.Visualization),
71 myShadingModel ((Visual3d_TypeOfModel )AContext.Model),
72 myAntiAliasing(Standard_False),
73 myTransPers(&myDefaultTransPers),
74 myIsTransPers(Standard_False),
75 myProjectionState (0),
77 myStateCounter (theCounter),
78 myLastLightSourceState (0, 0)
80 myCurrLightSourceState = myStateCounter->Increment();
81 myModificationState = 1; // initial state
84 /*----------------------------------------------------------------------*/
86 OpenGl_View::~OpenGl_View ()
88 ReleaseGlResources (NULL); // ensure ReleaseGlResources() was called within valid context
91 void OpenGl_View::ReleaseGlResources (const Handle(OpenGl_Context)& theCtx)
93 OpenGl_Element::Destroy (theCtx.operator->(), myTrihedron);
94 OpenGl_Element::Destroy (theCtx.operator->(), myGraduatedTrihedron);
96 if (!myTextureEnv.IsNull())
98 theCtx->DelayedRelease (myTextureEnv);
99 myTextureEnv.Nullify();
101 if (myBgTexture.TexId != 0)
103 glDeleteTextures (1, (GLuint*)&(myBgTexture.TexId));
104 myBgTexture.TexId = 0;
108 void OpenGl_View::SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
109 const Handle(Graphic3d_TextureEnv)& theTexture)
111 if (!myTextureEnv.IsNull())
113 theCtx->DelayedRelease (myTextureEnv);
114 myTextureEnv.Nullify();
117 if (theTexture.IsNull())
122 myTextureEnv = new OpenGl_Texture (theTexture->GetParams());
123 Handle(Image_PixMap) anImage = theTexture->GetImage();
124 if (!anImage.IsNull())
125 myTextureEnv->Init (theCtx, *anImage.operator->(), theTexture->Type());
127 myModificationState++;
130 void OpenGl_View::SetSurfaceDetail (const Visual3d_TypeOfSurfaceDetail theMode)
132 mySurfaceDetail = theMode;
134 myModificationState++;
137 // =======================================================================
138 // function : SetBackfacing
140 // =======================================================================
141 void OpenGl_View::SetBackfacing (const Standard_Integer theMode)
143 myBackfacing = theMode;
146 // =======================================================================
147 // function : SetLights
149 // =======================================================================
150 void OpenGl_View::SetLights (const CALL_DEF_VIEWCONTEXT& theViewCtx)
153 for (Standard_Integer aLightIt = 0; aLightIt < theViewCtx.NbActiveLight; ++aLightIt)
155 myLights.Append (theViewCtx.ActiveLight[aLightIt]);
157 myCurrLightSourceState = myStateCounter->Increment();
160 /*----------------------------------------------------------------------*/
162 //call_togl_setvisualisation
163 void OpenGl_View::SetVisualisation (const CALL_DEF_VIEWCONTEXT &AContext)
165 myVisualization = AContext.Visualization;
166 myShadingModel = (Visual3d_TypeOfModel )AContext.Model;
169 /*----------------------------------------------------------------------*/
171 //call_togl_cliplimit
172 void OpenGl_View::SetClipLimit (const Graphic3d_CView& theCView)
174 myZClip.Back.Limit = theCView.Context.ZClipBackPlane;
175 myZClip.Front.Limit = theCView.Context.ZClipFrontPlane;
177 myZClip.Back.IsOn = (theCView.Context.BackZClipping != 0);
178 myZClip.Front.IsOn = (theCView.Context.FrontZClipping != 0);
181 /*----------------------------------------------------------------------*/
183 void OpenGl_View::SetFog (const Graphic3d_CView& theCView,
184 const Standard_Boolean theFlag)
188 myFog.IsOn = Standard_False;
192 myFog.IsOn = Standard_True;
194 myFog.Front = theCView.Context.DepthFrontPlane;
195 myFog.Back = theCView.Context.DepthBackPlane;
197 myFog.Color.rgb[0] = theCView.DefWindow.Background.r;
198 myFog.Color.rgb[1] = theCView.DefWindow.Background.g;
199 myFog.Color.rgb[2] = theCView.DefWindow.Background.b;
200 myFog.Color.rgb[3] = 1.0f;
204 /*----------------------------------------------------------------------*/
206 void OpenGl_View::TriedronDisplay (const Handle(OpenGl_Context)& theCtx,
207 const Aspect_TypeOfTriedronPosition thePosition,
208 const Quantity_NameOfColor theColor,
209 const Standard_Real theScale,
210 const Standard_Boolean theAsWireframe)
212 OpenGl_Element::Destroy (theCtx.operator->(), myTrihedron);
213 myTrihedron = new OpenGl_Trihedron (thePosition, theColor, theScale, theAsWireframe);
216 /*----------------------------------------------------------------------*/
218 void OpenGl_View::TriedronErase (const Handle(OpenGl_Context)& theCtx)
220 OpenGl_Element::Destroy (theCtx.operator->(), myTrihedron);
223 /*----------------------------------------------------------------------*/
225 void OpenGl_View::GraduatedTrihedronDisplay (const Handle(OpenGl_Context)& theCtx,
226 const Graphic3d_CGraduatedTrihedron& theData)
228 OpenGl_Element::Destroy (theCtx.operator->(), myGraduatedTrihedron);
229 myGraduatedTrihedron = new OpenGl_GraduatedTrihedron (theData);
232 /*----------------------------------------------------------------------*/
234 void OpenGl_View::GraduatedTrihedronErase (const Handle(OpenGl_Context)& theCtx)
236 OpenGl_Element::Destroy (theCtx.operator->(), myGraduatedTrihedron);
239 /*----------------------------------------------------------------------*/
241 //transform_persistence_end
242 void OpenGl_View::EndTransformPersistence(const Handle(OpenGl_Context)& theCtx)
246 #if !defined(GL_ES_VERSION_2_0)
248 glMatrixMode (GL_PROJECTION);
250 glMatrixMode (GL_MODELVIEW);
252 myIsTransPers = Standard_False;
254 // Note: the approach of accessing OpenGl matrices is used now since the matrix
255 // manipulation are made with help of OpenGl methods. This might be replaced by
256 // direct computation of matrices by OCC subroutines.
257 Tmatrix3 aResultWorldView;
258 glGetFloatv (GL_MODELVIEW_MATRIX, *aResultWorldView);
260 Tmatrix3 aResultProjection;
261 glGetFloatv (GL_PROJECTION_MATRIX, *aResultProjection);
263 // Set OCCT state uniform variables
264 theCtx->ShaderManager()->RevertWorldViewStateTo (&aResultWorldView);
265 theCtx->ShaderManager()->RevertProjectionStateTo (&aResultProjection);
270 /*----------------------------------------------------------------------*/
272 //transform_persistence_begin
273 const TEL_TRANSFORM_PERSISTENCE* OpenGl_View::BeginTransformPersistence (const Handle(OpenGl_Context)& theCtx,
274 const TEL_TRANSFORM_PERSISTENCE* theTransPers)
276 const TEL_TRANSFORM_PERSISTENCE* aTransPersPrev = myTransPers;
277 myTransPers = theTransPers;
278 if (theTransPers->mode == 0)
280 EndTransformPersistence (theCtx);
281 return aTransPersPrev;
284 #if !defined(GL_ES_VERSION_2_0)
286 GLdouble aModelMatrix[4][4];
287 GLdouble aProjMatrix[4][4];
288 glGetIntegerv (GL_VIEWPORT, aViewport);
289 glGetDoublev (GL_MODELVIEW_MATRIX, (GLdouble* )aModelMatrix);
290 glGetDoublev (GL_PROJECTION_MATRIX, (GLdouble *)aProjMatrix);
292 const GLdouble aViewportW = (GLdouble )aViewport[2];
293 const GLdouble aViewportH = (GLdouble )aViewport[3];
297 // pop matrix stack - it will be overridden later
298 glMatrixMode (GL_PROJECTION);
300 glMatrixMode (GL_MODELVIEW);
305 myIsTransPers = Standard_True;
308 // push matrices into stack and reset them
309 glMatrixMode (GL_MODELVIEW);
313 glMatrixMode (GL_PROJECTION);
317 // get the window's (fixed) coordinates for theTransPers->point before matrixes modifications
318 GLdouble aWinX = 0.0, aWinY = 0.0, aWinZ = 0.0;
319 if ((theTransPers->mode & TPF_PAN) != TPF_PAN)
321 gluProject (theTransPers->pointX, theTransPers->pointY, theTransPers->pointZ,
322 (GLdouble* )aModelMatrix, (GLdouble* )aProjMatrix, aViewport,
323 &aWinX, &aWinY, &aWinZ);
327 if ((theTransPers->mode & TPF_ZOOM)
328 || (theTransPers->mode == TPF_TRIEDRON))
330 // compute fixed-zoom multiplier
331 // actually function works ugly with TelPerspective!
332 const GLdouble aDet2 = 0.002 / (aViewportW > aViewportH ? aProjMatrix[1][1] : aProjMatrix[0][0]);
333 aProjMatrix[0][0] *= aDet2;
334 aProjMatrix[1][1] *= aDet2;
335 aProjMatrix[2][2] *= aDet2;
338 // prevent translation - annulate translate matrix
339 if ((theTransPers->mode & TPF_PAN)
340 || (theTransPers->mode == TPF_TRIEDRON))
342 aModelMatrix[3][0] = 0.0;
343 aModelMatrix[3][1] = 0.0;
344 aModelMatrix[3][2] = 0.0;
345 aProjMatrix [3][0] = 0.0;
346 aProjMatrix [3][1] = 0.0;
347 aProjMatrix [3][2] = 0.0;
350 // prevent scaling-on-axis
351 if (theTransPers->mode & TPF_ZOOM)
353 const gp_Pnt anAxialScale = myCamera->AxialScale();
354 const double aScaleX = anAxialScale.X();
355 const double aScaleY = anAxialScale.Y();
356 const double aScaleZ = anAxialScale.Z();
357 for (int i = 0; i < 3; ++i)
359 aModelMatrix[0][i] /= aScaleX;
360 aModelMatrix[1][i] /= aScaleY;
361 aModelMatrix[2][i] /= aScaleZ;
365 // prevent rotating - annulate rotate matrix
366 if (theTransPers->mode & TPF_ROTATE)
368 aModelMatrix[0][0] = 1.0;
369 aModelMatrix[1][1] = 1.0;
370 aModelMatrix[2][2] = 1.0;
372 aModelMatrix[1][0] = 0.0;
373 aModelMatrix[2][0] = 0.0;
374 aModelMatrix[0][1] = 0.0;
375 aModelMatrix[2][1] = 0.0;
376 aModelMatrix[0][2] = 0.0;
377 aModelMatrix[1][2] = 0.0;
380 // load computed matrices
381 glMatrixMode (GL_MODELVIEW);
382 glMultMatrixd ((GLdouble* )aModelMatrix);
384 glMatrixMode (GL_PROJECTION);
385 glMultMatrixd ((GLdouble* )aProjMatrix);
387 if (theTransPers->mode == TPF_TRIEDRON)
389 // move to the window corner
390 if (theTransPers->pointX != 0.0
391 && theTransPers->pointY != 0.0)
393 GLdouble aW1, aH1, aW2, aH2, aDummy;
394 glMatrixMode (GL_PROJECTION);
395 gluUnProject ( 0.5 * aViewportW, 0.5 * aViewportH, 0.0,
396 (GLdouble* )THE_IDENTITY_MATRIX, (GLdouble* )aProjMatrix, aViewport,
397 &aW1, &aH1, &aDummy);
398 gluUnProject (-0.5 * aViewportW, -0.5 * aViewportH, 0.0,
399 (GLdouble* )THE_IDENTITY_MATRIX, (GLdouble* )aProjMatrix, aViewport,
400 &aW2, &aH2, &aDummy);
402 GLdouble aMoveX = 0.5 * (aW1 - aW2 - theTransPers->pointZ);
403 GLdouble aMoveY = 0.5 * (aH1 - aH2 - theTransPers->pointZ);
404 aMoveX = (theTransPers->pointX > 0.0) ? aMoveX : -aMoveX;
405 aMoveY = (theTransPers->pointY > 0.0) ? aMoveY : -aMoveY;
406 theCtx->core11->glTranslated (aMoveX, aMoveY, 0.0);
409 else if ((theTransPers->mode & TPF_PAN) != TPF_PAN)
411 // move to thePoint using saved win-coordinates ('marker-behaviour')
412 GLdouble aMoveX, aMoveY, aMoveZ;
413 glGetDoublev (GL_MODELVIEW_MATRIX, (GLdouble* )aModelMatrix);
414 glGetDoublev (GL_PROJECTION_MATRIX, (GLdouble* )aProjMatrix);
415 gluUnProject (aWinX, aWinY, aWinZ,
416 (GLdouble* )aModelMatrix, (GLdouble* )aProjMatrix, aViewport,
417 &aMoveX, &aMoveY, &aMoveZ);
419 glMatrixMode (GL_MODELVIEW);
420 theCtx->core11->glTranslated (aMoveX, aMoveY, aMoveZ);
423 // Note: the approach of accessing OpenGl matrices is used now since the matrix
424 // manipulation are made with help of OpenGl methods. This might be replaced by
425 // direct computation of matrices by OCC subroutines.
426 Tmatrix3 aResultWorldView;
427 glGetFloatv (GL_MODELVIEW_MATRIX, *aResultWorldView);
429 Tmatrix3 aResultProjection;
430 glGetFloatv (GL_PROJECTION_MATRIX, *aResultProjection);
432 // Set OCCT state uniform variables
433 theCtx->ShaderManager()->UpdateWorldViewStateTo (&aResultWorldView);
434 theCtx->ShaderManager()->UpdateProjectionStateTo (&aResultProjection);
436 return aTransPersPrev;
439 /*----------------------------------------------------------------------*/
441 void OpenGl_View::GetMatrices (TColStd_Array2OfReal& theMatOrient,
442 TColStd_Array2OfReal& theMatMapping) const
444 const Graphic3d_Mat4d& aProj = myCamera->ProjectionMatrix();
445 const Graphic3d_Mat4d& aOrient = myCamera->OrientationMatrix();
447 for (Standard_Integer aRow = 0; aRow < 4; ++aRow)
449 for (Standard_Integer aCol = 0; aCol < 4; ++aCol)
451 theMatOrient (aRow, aCol) = aOrient.GetValue (aRow, aCol);
452 theMatMapping (aRow, aCol) = aProj .GetValue (aRow, aCol);
456 /*----------------------------------------------------------------------*/