source: trunk/source/visualization/OpenGL/src/G4OpenGLViewer.cc@ 1271

Last change on this file since 1271 was 1245, checked in by garnier, 16 years ago

update
  • Property svn:mime-type set to text/cpp
File size: 25.1 KB
Line 
1//
2// ********************************************************************
3// * License and Disclaimer *
4// * *
5// * The Geant4 software is copyright of the Copyright Holders of *
6// * the Geant4 Collaboration. It is provided under the terms and *
7// * conditions of the Geant4 Software License, included in the file *
8// * LICENSE and available at http://cern.ch/geant4/license . These *
9// * include a list of copyright holders. *
10// * *
11// * Neither the authors of this software system, nor their employing *
12// * institutes,nor the agencies providing financial support for this *
13// * work make any representation or warranty, express or implied, *
14// * regarding this software system or assume any liability for its *
15// * use. Please see the license in the file LICENSE and URL above *
16// * for the full disclaimer and the limitation of liability. *
17// * *
18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
20// * By using, copying, modifying or distributing the software (or *
21// * any work based on the software) you agree to acknowledge its *
22// * use in resulting scientific publications, and indicate your *
23// * acceptance of all terms of the Geant4 Software license. *
24// ********************************************************************
25//
26//
27// $Id: G4OpenGLViewer.cc,v 1.61 2010/04/27 15:59:10 lgarnier Exp $
28// GEANT4 tag $Name: $
29//
30//
31// Andrew Walkden 27th March 1996
32// OpenGL view - opens window, hard copy, etc.
33
34#ifdef G4VIS_BUILD_OPENGL_DRIVER
35
36#include "G4ios.hh"
37#include "G4OpenGLViewer.hh"
38#include "G4OpenGLSceneHandler.hh"
39#include "G4OpenGLTransform3D.hh"
40#include "G4OpenGL2PSAction.hh"
41
42#include "G4Scene.hh"
43#include "G4VisExtent.hh"
44#include "G4LogicalVolume.hh"
45#include "G4VSolid.hh"
46#include "G4Point3D.hh"
47#include "G4Normal3D.hh"
48#include "G4Plane3D.hh"
49#include "G4AttHolder.hh"
50#include "G4AttCheck.hh"
51
52// GL2PS
53#include "Geant4_gl2ps.h"
54
55#include <sstream>
56
57G4OpenGLViewer::G4OpenGLViewer (G4OpenGLSceneHandler& scene):
58G4VViewer (scene, -1),
59fPrintColour (true),
60fVectoredPs (true),
61fOpenGLSceneHandler(scene),
62background (G4Colour(0.,0.,0.)),
63transparency_enabled (true),
64antialiasing_enabled (false),
65haloing_enabled (false),
66fStartTime(-DBL_MAX),
67fEndTime(DBL_MAX),
68fFadeFactor(0.),
69fDisplayHeadTime(false),
70fDisplayHeadTimeX(-0.9),
71fDisplayHeadTimeY(-0.9),
72fDisplayHeadTimeSize(24.),
73fDisplayHeadTimeRed(0.),
74fDisplayHeadTimeGreen(1.),
75fDisplayHeadTimeBlue(1.),
76fDisplayLightFront(false),
77fDisplayLightFrontX(0.),
78fDisplayLightFrontY(0.),
79fDisplayLightFrontZ(0.),
80fDisplayLightFrontT(0.),
81fDisplayLightFrontRed(0.),
82fDisplayLightFrontGreen(1.),
83fDisplayLightFrontBlue(0.),
84fPrintSizeX(-1),
85fPrintSizeY(-1),
86fPrintFilename ("G4OpenGL"),
87fPrintFilenameIndex(0),
88fPointSize (0),
89fSizeHasChanged(0)
90{
91 // Make changes to view parameters for OpenGL...
92 fVP.SetAutoRefresh(true);
93 fDefaultVP.SetAutoRefresh(true);
94
95 fGL2PSAction = new G4OpenGL2PSAction();
96
97 // glClearColor (0.0, 0.0, 0.0, 0.0);
98 // glClearDepth (1.0);
99 // glDisable (GL_BLEND);
100 // glDisable (GL_LINE_SMOOTH);
101 // glDisable (GL_POLYGON_SMOOTH);
102
103}
104
105G4OpenGLViewer::~G4OpenGLViewer () {}
106
107void G4OpenGLViewer::InitializeGLView ()
108{
109 glClearColor (0.0, 0.0, 0.0, 0.0);
110 glClearDepth (1.0);
111 glDisable (GL_BLEND);
112 glDisable (GL_LINE_SMOOTH);
113 glDisable (GL_POLYGON_SMOOTH);
114
115 fWinSize_x = fVP.GetWindowSizeHintX();
116 fWinSize_y = fVP.GetWindowSizeHintY();
117}
118
119void G4OpenGLViewer::ClearView () {
120#ifdef G4DEBUG_VIS_OGL
121 printf("G4OpenGLViewer::ClearView\n");
122#endif
123 glClearColor (background.GetRed(),
124 background.GetGreen(),
125 background.GetBlue(),
126 1.);
127 glClearDepth (1.0);
128 //Below line does not compile with Mesa includes.
129 //glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
130 glClear (GL_COLOR_BUFFER_BIT);
131 glClear (GL_DEPTH_BUFFER_BIT);
132 glClear (GL_STENCIL_BUFFER_BIT);
133#ifdef G4DEBUG_VIS_OGL
134 printf("G4OpenGLViewer::ClearView flush\n");
135#endif
136 glFlush ();
137}
138
139
140void G4OpenGLViewer::ResizeWindow(unsigned int aWidth, unsigned int aHeight) {
141 if ((fWinSize_x != aWidth) || (fWinSize_y != aHeight)) {
142 fWinSize_x = aWidth;
143 fWinSize_y = aHeight;
144 fSizeHasChanged = true;
145 } else {
146 fSizeHasChanged = false;
147 }
148}
149
150/**
151 * Set the viewport of the scene
152 * MAXIMUM SIZE is :
153 * GLint dims[2];
154 * glGetIntegerv(GL_MAX_VIEWPORT_DIMS, dims);
155 */
156void G4OpenGLViewer::ResizeGLView()
157{
158#ifdef G4DEBUG_VIS_OGL
159 printf("G4OpenGLViewer::ResizeGLView %d %d &:%d\n",fWinSize_x,fWinSize_y,this);
160#endif
161 // Check size
162 GLint dims[2];
163 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, dims);
164
165 if ((dims[0] !=0 ) && (dims[1] !=0)) {
166
167 if (fWinSize_x > (unsigned)dims[0]) {
168 G4cerr << "Try to resize view greater than max X viewport dimension. Desired size "<<dims[0] <<" is resize to "<< dims[0] << G4endl;
169 fWinSize_x = dims[0];
170 }
171 if (fWinSize_y > (unsigned)dims[1]) {
172 G4cerr << "Try to resize view greater than max Y viewport dimension. Desired size "<<dims[0] <<" is resize to "<< dims[1] << G4endl;
173 fWinSize_y = dims[1];
174 }
175 }
176
177 glViewport(0, 0, fWinSize_x,fWinSize_y);
178
179
180}
181
182
183void G4OpenGLViewer::SetView () {
184
185 if (!fSceneHandler.GetScene()) {
186 return;
187 }
188 // Calculates view representation based on extent of object being
189 // viewed and (initial) viewpoint. (Note: it can change later due
190 // to user interaction via visualization system's GUI.)
191
192 // Lighting.
193 GLfloat lightPosition [4];
194 lightPosition [0] = fVP.GetActualLightpointDirection().x();
195 lightPosition [1] = fVP.GetActualLightpointDirection().y();
196 lightPosition [2] = fVP.GetActualLightpointDirection().z();
197 lightPosition [3] = 0.;
198 // Light position is "true" light direction, so must come after gluLookAt.
199 GLfloat ambient [] = { 0.2, 0.2, 0.2, 1.};
200 GLfloat diffuse [] = { 0.8, 0.8, 0.8, 1.};
201 glEnable (GL_LIGHT0);
202 glLightfv (GL_LIGHT0, GL_AMBIENT, ambient);
203 glLightfv (GL_LIGHT0, GL_DIFFUSE, diffuse);
204
205 G4double ratioX = 1;
206 G4double ratioY = 1;
207 if (fWinSize_y > fWinSize_x) {
208 ratioX = ((G4double)fWinSize_y) / ((G4double)fWinSize_x);
209 }
210 if (fWinSize_x > fWinSize_y) {
211 ratioY = ((G4double)fWinSize_x) / ((G4double)fWinSize_y);
212 }
213
214 // Get radius of scene, etc.
215 // Note that this procedure properly takes into account zoom, dolly and pan.
216 const G4Point3D targetPoint
217 = fSceneHandler.GetScene()->GetStandardTargetPoint()
218 + fVP.GetCurrentTargetPoint ();
219 G4double radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
220 if(radius<=0.) radius = 1.;
221 const G4double cameraDistance = fVP.GetCameraDistance (radius);
222 const G4Point3D cameraPosition =
223 targetPoint + cameraDistance * fVP.GetViewpointDirection().unit();
224 const GLdouble pnear = fVP.GetNearDistance (cameraDistance, radius);
225 const GLdouble pfar = fVP.GetFarDistance (cameraDistance, pnear, radius);
226 const GLdouble right = fVP.GetFrontHalfHeight (pnear, radius) * ratioY;
227 const GLdouble left = -right;
228 const GLdouble top = fVP.GetFrontHalfHeight (pnear, radius) * ratioX;
229 const GLdouble bottom = -top;
230
231 // FIXME
232 ResizeGLView();
233 //SHOULD SetWindowsSizeHint()...
234
235 glMatrixMode (GL_PROJECTION); // set up Frustum.
236 glLoadIdentity();
237
238 const G4Vector3D scaleFactor = fVP.GetScaleFactor();
239 glScaled(scaleFactor.x(),scaleFactor.y(),scaleFactor.z());
240
241 if (fVP.GetFieldHalfAngle() == 0.) {
242 glOrtho (left, right, bottom, top, pnear, pfar);
243 }
244 else {
245 glFrustum (left, right, bottom, top, pnear, pfar);
246 }
247
248 glMatrixMode (GL_MODELVIEW); // apply further transformations to scene.
249 glLoadIdentity();
250
251 const G4Normal3D& upVector = fVP.GetUpVector ();
252 G4Point3D gltarget;
253 if (cameraDistance > 1.e-6 * radius) {
254 gltarget = targetPoint;
255 }
256 else {
257 gltarget = targetPoint - radius * fVP.GetViewpointDirection().unit();
258 }
259
260 const G4Point3D& pCamera = cameraPosition; // An alias for brevity.
261 gluLookAt (pCamera.x(), pCamera.y(), pCamera.z(), // Viewpoint.
262 gltarget.x(), gltarget.y(), gltarget.z(), // Target point.
263 upVector.x(), upVector.y(), upVector.z()); // Up vector.
264
265 // Light position is "true" light direction, so must come after gluLookAt.
266 glLightfv (GL_LIGHT0, GL_POSITION, lightPosition);
267
268 // OpenGL no longer seems to reconstruct clipped edges, so, when the
269 // BooleanProcessor is up to it, abandon this and use generic
270 // clipping in G4OpenGLSceneHandler::CreateSectionPolyhedron. Also,
271 // force kernel visit on change of clipping plane in
272 // G4OpenGLStoredViewer::CompareForKernelVisit.
273 if (fVP.IsSection () ) { // pair of back to back clip planes.
274 const G4Plane3D& s = fVP.GetSectionPlane ();
275 double sArray[4];
276 sArray[0] = s.a();
277 sArray[1] = s.b();
278 sArray[2] = s.c();
279 sArray[3] = s.d() + radius * 1.e-05;
280 glClipPlane (GL_CLIP_PLANE0, sArray);
281 glEnable (GL_CLIP_PLANE0);
282 sArray[0] = -s.a();
283 sArray[1] = -s.b();
284 sArray[2] = -s.c();
285 sArray[3] = -s.d() + radius * 1.e-05;
286 glClipPlane (GL_CLIP_PLANE1, sArray);
287 glEnable (GL_CLIP_PLANE1);
288 } else {
289 glDisable (GL_CLIP_PLANE0);
290 glDisable (GL_CLIP_PLANE1);
291 }
292
293 const G4Planes& cutaways = fVP.GetCutawayPlanes();
294 size_t nPlanes = cutaways.size();
295 if (fVP.IsCutaway() &&
296 fVP.GetCutawayMode() == G4ViewParameters::cutawayIntersection &&
297 nPlanes > 0) {
298 double a[4];
299 a[0] = cutaways[0].a();
300 a[1] = cutaways[0].b();
301 a[2] = cutaways[0].c();
302 a[3] = cutaways[0].d();
303 glClipPlane (GL_CLIP_PLANE2, a);
304 glEnable (GL_CLIP_PLANE2);
305 if (nPlanes > 1) {
306 a[0] = cutaways[1].a();
307 a[1] = cutaways[1].b();
308 a[2] = cutaways[1].c();
309 a[3] = cutaways[1].d();
310 glClipPlane (GL_CLIP_PLANE3, a);
311 glEnable (GL_CLIP_PLANE3);
312 }
313 if (nPlanes > 2) {
314 a[0] = cutaways[2].a();
315 a[1] = cutaways[2].b();
316 a[2] = cutaways[2].c();
317 a[3] = cutaways[2].d();
318 glClipPlane (GL_CLIP_PLANE4, a);
319 glEnable (GL_CLIP_PLANE4);
320 }
321 } else {
322 glDisable (GL_CLIP_PLANE2);
323 glDisable (GL_CLIP_PLANE3);
324 glDisable (GL_CLIP_PLANE4);
325 }
326
327 // Background.
328 background = fVP.GetBackgroundColour ();
329
330}
331
332void G4OpenGLViewer::HaloingFirstPass () {
333
334 //To perform haloing, first Draw all information to the depth buffer
335 //alone, using a chunky line width, and then Draw all info again, to
336 //the colour buffer, setting a thinner line width an the depth testing
337 //function to less than or equal, so if two lines cross, the one
338 //passing behind the other will not pass the depth test, and so not
339 //get rendered either side of the infront line for a short distance.
340
341 //First, disable writing to the colo(u)r buffer...
342 glColorMask (GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
343
344 //Now enable writing to the depth buffer...
345 glDepthMask (GL_TRUE);
346 glDepthFunc (GL_LESS);
347 glClearDepth (1.0);
348
349 //Finally, set the line width to something wide...
350 glLineWidth (3.0);
351
352}
353
354void G4OpenGLViewer::HaloingSecondPass () {
355
356 //And finally, turn the colour buffer back on with a sesible line width...
357 glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
358 glDepthFunc (GL_LEQUAL);
359 glLineWidth (1.0);
360
361}
362
363void G4OpenGLViewer::Pick(GLdouble x, GLdouble y)
364{
365 //G4cout << "X: " << x << ", Y: " << y << G4endl;
366 const G4int BUFSIZE = 512;
367 GLuint selectBuffer[BUFSIZE];
368 glSelectBuffer(BUFSIZE, selectBuffer);
369 glRenderMode(GL_SELECT);
370 glInitNames();
371 glPushName(0);
372 glMatrixMode(GL_PROJECTION);
373 G4double currentProjectionMatrix[16];
374 glGetDoublev(GL_PROJECTION_MATRIX, currentProjectionMatrix);
375 glPushMatrix();
376 glLoadIdentity();
377 GLint viewport[4];
378 glGetIntegerv(GL_VIEWPORT, viewport);
379 // Define 5x5 pixel pick area
380 gluPickMatrix(x, viewport[3] - y, 5., 5., viewport);
381 glMultMatrixd(currentProjectionMatrix);
382 glMatrixMode(GL_MODELVIEW);
383 DrawView();
384 GLint hits = glRenderMode(GL_RENDER);
385 if (hits < 0)
386 G4cout << "Too many hits. Zoom in to reduce overlaps." << G4cout;
387 else if (hits > 0) {
388 //G4cout << hits << " hit(s)" << G4endl;
389 GLuint* p = selectBuffer;
390 for (GLint i = 0; i < hits; ++i) {
391 GLuint nnames = *p++;
392 *p++; //OR GLuint zmin = *p++;
393 *p++; //OR GLuint zmax = *p++;
394 //G4cout << "Hit " << i << ": " << nnames << " names"
395 // << "\nzmin: " << zmin << ", zmax: " << zmax << G4endl;
396 for (GLuint j = 0; j < nnames; ++j) {
397 GLuint name = *p++;
398 //G4cout << "Name " << j << ": PickName: " << name << G4endl;
399 std::map<GLuint, G4AttHolder*>::iterator iter =
400 fOpenGLSceneHandler.fPickMap.find(name);
401 if (iter != fOpenGLSceneHandler.fPickMap.end()) {
402 G4AttHolder* attHolder = iter->second;
403 if(attHolder && attHolder->GetAttDefs().size()) {
404 for (size_t i = 0; i < attHolder->GetAttDefs().size(); ++i) {
405 G4cout << G4AttCheck(attHolder->GetAttValues()[i],
406 attHolder->GetAttDefs()[i]);
407 }
408 }
409 }
410 }
411 G4cout << G4endl;
412 }
413 }
414 glMatrixMode(GL_PROJECTION);
415 glPopMatrix();
416 glMatrixMode(GL_MODELVIEW);
417}
418
419
420
421
422GLubyte* G4OpenGLViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
423
424 GLubyte* buffer;
425 GLint swapbytes, lsbfirst, rowlength;
426 GLint skiprows, skippixels, alignment;
427 GLenum format;
428 int size;
429
430 if (inColor) {
431 format = GL_RGB;
432 size = width*height*3;
433 } else {
434 format = GL_LUMINANCE;
435 size = width*height*1;
436 }
437
438 buffer = new GLubyte[size];
439 if (buffer == NULL)
440 return NULL;
441
442 glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
443 glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
444 glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
445
446 glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
447 glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
448 glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
449
450 glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
451 glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
452 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
453
454 glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
455 glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
456 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
457
458 glReadBuffer(GL_FRONT);
459 glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
460
461 glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
462 glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
463 glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
464
465 glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
466 glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
467 glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
468
469 return buffer;
470}
471
472void G4OpenGLViewer::printEPS() {
473 bool res;
474#ifdef G4DEBUG_VIS_OGL
475 printf("G4OpenGLViewer::printEPS file:%s Vec:%d Name:%s\n",getRealPrintFilename().c_str(),fVectoredPs,GetName().c_str());
476#endif
477
478 // Change the LC_NUMERIC value in order to have "." separtor and not ","
479 // This case is only useful for French, Canadien...
480 char *oldLocale = strdup(setlocale(LC_NUMERIC,NULL));
481 setlocale(LC_NUMERIC,"C");
482
483 if (fVectoredPs) {
484 res = printVectoredEPS();
485 } else {
486 res = printNonVectoredEPS();
487 }
488
489 // restore the local
490 if (oldLocale) {
491 setlocale(LC_NUMERIC,oldLocale);
492 free(oldLocale);
493 }
494
495 if (res == false) {
496 G4cerr << "Error while saving file... "<<getRealPrintFilename().c_str()<< G4endl;
497 } else {
498 G4cout << "File "<<getRealPrintFilename().c_str()<<" has been saved " << G4endl;
499 }
500
501 // increment index if necessary
502 if ( fPrintFilenameIndex != -1) {
503 fPrintFilenameIndex++;
504 }
505
506#ifdef G4DEBUG_VIS_OGL
507 printf("G4OpenGLViewer::printEPS END\n");
508#endif
509}
510
511bool G4OpenGLViewer::printVectoredEPS() {
512 return printGl2PS();
513}
514
515bool G4OpenGLViewer::printNonVectoredEPS () {
516
517 int width = getRealPrintSizeX();
518 int height = getRealPrintSizeY();
519
520#ifdef G4DEBUG_VIS_OGL
521 printf("G4OpenGLViewer::printNonVectoredEPS file:%s Vec:%d X:%d Y:%d col:%d fWinX:%d fWinY:%d\n",getRealPrintFilename().c_str(),fVectoredPs,width,height,fPrintColour,fWinSize_x,fWinSize_y);
522#endif
523 FILE* fp;
524 GLubyte* pixels;
525 GLubyte* curpix;
526 int components, pos, i;
527
528 pixels = grabPixels (fPrintColour, width, height);
529
530 if (pixels == NULL) {
531 G4cerr << "Failed to get pixels from OpenGl viewport" << G4endl;
532 return false;
533 }
534 if (fPrintColour) {
535 components = 3;
536 } else {
537 components = 1;
538 }
539 std::string name = getRealPrintFilename();
540 fp = fopen (name.c_str(), "w");
541 if (fp == NULL) {
542 G4cerr << "Can't open filename " << name.c_str() << G4endl;
543 return false;
544 }
545
546 fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
547 fprintf (fp, "%%%%Title: %s\n", name.c_str());
548 fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
549 fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
550 fprintf (fp, "%%%%EndComments\n");
551 fprintf (fp, "gsave\n");
552 fprintf (fp, "/bwproc {\n");
553 fprintf (fp, " rgbproc\n");
554 fprintf (fp, " dup length 3 idiv string 0 3 0 \n");
555 fprintf (fp, " 5 -1 roll {\n");
556 fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n");
557 fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
558 fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n");
559 fprintf (fp, " { 2 1 roll } ifelse\n");
560 fprintf (fp, " }forall\n");
561 fprintf (fp, " pop pop pop\n");
562 fprintf (fp, "} def\n");
563 fprintf (fp, "systemdict /colorimage known not {\n");
564 fprintf (fp, " /colorimage {\n");
565 fprintf (fp, " pop\n");
566 fprintf (fp, " pop\n");
567 fprintf (fp, " /rgbproc exch def\n");
568 fprintf (fp, " { bwproc } image\n");
569 fprintf (fp, " } def\n");
570 fprintf (fp, "} if\n");
571 fprintf (fp, "/picstr %d string def\n", width * components);
572 fprintf (fp, "%d %d scale\n", width, height);
573 fprintf (fp, "%d %d %d\n", width, height, 8);
574 fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
575 fprintf (fp, "{currentfile picstr readhexstring pop}\n");
576 fprintf (fp, "false %d\n", components);
577 fprintf (fp, "colorimage\n");
578
579 curpix = (GLubyte*) pixels;
580 pos = 0;
581 for (i = width*height*components; i>0; i--) {
582 fprintf (fp, "%02hx ", *(curpix++));
583 if (++pos >= 32) {
584 fprintf (fp, "\n");
585 pos = 0;
586 }
587 }
588 if (pos)
589 fprintf (fp, "\n");
590
591 fprintf (fp, "grestore\n");
592 fprintf (fp, "showpage\n");
593 delete pixels;
594 fclose (fp);
595
596 // Reset for next time (useful is size change)
597 // fPrintSizeX = -1;
598 // fPrintSizeY = -1;
599
600 return true;
601}
602
603
604bool G4OpenGLViewer::printGl2PS() {
605
606 int width = getRealPrintSizeX();
607 int height = getRealPrintSizeY();
608
609 if (!fGL2PSAction) return false;
610
611 fGL2PSAction->setFileName(getRealPrintFilename().c_str());
612 // try to resize
613 int X = fWinSize_x;
614 int Y = fWinSize_y;
615
616 fWinSize_x = width;
617 fWinSize_y = height;
618 // Laurent G. 16/03/10 : Not the good way to do.
619 // We should draw in a new offscreen context instead of
620 // resizing and drawing in current window...
621 // This should be solve when we will do an offscreen method
622 // to render OpenGL
623 // See :
624 // http://developer.apple.com/Mac/library/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_offscreen/opengl_offscreen.html
625 // http://www.songho.ca/opengl/gl_fbo.html
626
627 ResizeGLView();
628 if (fGL2PSAction->enableFileWriting()) {
629
630 // Set the viewport
631 // fGL2PSAction->setViewport(0, 0, getRealPrintSizeX(),getRealPrintSizeY());
632 // By default, we choose the line width (trajectories...)
633 fGL2PSAction->setLineWidth(1);
634 // By default, we choose the point size (markers...)
635 fGL2PSAction->setPointSize(2);
636
637 DrawView ();
638 fGL2PSAction->disableFileWriting();
639 }
640
641 fWinSize_x = X;
642 fWinSize_y = Y;
643 ResizeGLView();
644 DrawView ();
645
646 // Reset for next time (useful is size change)
647 // fPrintSizeX = 0;
648 // fPrintSizeY = 0;
649
650 return true;
651}
652
653unsigned int G4OpenGLViewer::getWinWidth() {
654 return fWinSize_x;
655}
656
657unsigned int G4OpenGLViewer::getWinHeight() {
658 return fWinSize_y;
659}
660
661G4bool G4OpenGLViewer::sizeHasChanged() {
662 return fSizeHasChanged;
663}
664
665G4int G4OpenGLViewer::getRealPrintSizeX() {
666 if (fPrintSizeX == -1) {
667 return fWinSize_x;
668 }
669 GLint dims[2];
670 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, dims);
671
672 // L.Garnier 01-2010: Some problems with mac 10.6
673 if ((dims[0] !=0 ) && (dims[1] !=0)) {
674 if (fPrintSizeX > dims[0]){
675 return dims[0];
676 }
677 }
678 if (fPrintSizeX < -1){
679 return 0;
680 }
681 return fPrintSizeX;
682}
683
684G4int G4OpenGLViewer::getRealPrintSizeY() {
685 if (fPrintSizeY == -1) {
686 return fWinSize_y;
687 }
688 GLint dims[2];
689 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, dims);
690
691 // L.Garnier 01-2010: Some problems with mac 10.6
692 if ((dims[0] !=0 ) && (dims[1] !=0)) {
693 if (fPrintSizeY > dims[1]){
694 return dims[1];
695 }
696 }
697 if (fPrintSizeY < -1){
698 return 0;
699 }
700 return fPrintSizeY;
701}
702
703void G4OpenGLViewer::setPrintSize(G4int X, G4int Y) {
704 fPrintSizeX = X;
705 fPrintSizeY = Y;
706}
707
708void G4OpenGLViewer::setPrintFilename(G4String name,G4bool inc) {
709 if (name != "") {
710 fPrintFilename = name;
711 } else {
712 fPrintFilename = "G4OpenGL"; // by default
713 }
714 if (inc) {
715 fPrintFilenameIndex=0;
716 } else {
717 fPrintFilenameIndex=-1;
718 }
719}
720
721std::string G4OpenGLViewer::getRealPrintFilename() {
722 std::string temp = fPrintFilename;
723 if (fPrintFilenameIndex != -1) {
724 temp += std::string("_");
725 std::ostringstream os;
726 os << fPrintFilenameIndex;
727 std::string nb_str = os.str();
728 temp += nb_str;
729 }
730 temp += ".eps";
731 return temp;
732}
733
734GLdouble G4OpenGLViewer::getSceneNearWidth()
735{
736 if (!fSceneHandler.GetScene()) {
737 return 0;
738 }
739 const G4Point3D targetPoint
740 = fSceneHandler.GetScene()->GetStandardTargetPoint()
741 + fVP.GetCurrentTargetPoint ();
742 G4double radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
743 if(radius<=0.) radius = 1.;
744 const G4double cameraDistance = fVP.GetCameraDistance (radius);
745 const GLdouble pnear = fVP.GetNearDistance (cameraDistance, radius);
746 return 2 * fVP.GetFrontHalfHeight (pnear, radius);
747}
748
749GLdouble G4OpenGLViewer::getSceneFarWidth()
750{
751 if (!fSceneHandler.GetScene()) {
752 return 0;
753 }
754 const G4Point3D targetPoint
755 = fSceneHandler.GetScene()->GetStandardTargetPoint()
756 + fVP.GetCurrentTargetPoint ();
757 G4double radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
758 if(radius<=0.) radius = 1.;
759 const G4double cameraDistance = fVP.GetCameraDistance (radius);
760 const GLdouble pnear = fVP.GetNearDistance (cameraDistance, radius);
761 const GLdouble pfar = fVP.GetFarDistance (cameraDistance, pnear, radius);
762 return 2 * fVP.GetFrontHalfHeight (pfar, radius);
763}
764
765
766GLdouble G4OpenGLViewer::getSceneDepth()
767{
768 if (!fSceneHandler.GetScene()) {
769 return 0;
770 }
771 const G4Point3D targetPoint
772 = fSceneHandler.GetScene()->GetStandardTargetPoint()
773 + fVP.GetCurrentTargetPoint ();
774 G4double radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
775 if(radius<=0.) radius = 1.;
776 const G4double cameraDistance = fVP.GetCameraDistance (radius);
777 const GLdouble pnear = fVP.GetNearDistance (cameraDistance, radius);
778 return fVP.GetFarDistance (cameraDistance, pnear, radius)- pnear;
779}
780
781
782
783void G4OpenGLViewer::rotateScene(G4double dx, G4double dy,G4double deltaRotation)
784{
785 if (!fSceneHandler.GetScene()) {
786 return;
787 }
788
789 G4Vector3D vp;
790 G4Vector3D up;
791
792 G4Vector3D xprime;
793 G4Vector3D yprime;
794 G4Vector3D zprime;
795
796 G4double delta_alpha;
797 G4double delta_theta;
798
799 G4Vector3D new_vp;
800 G4Vector3D new_up;
801
802 G4double cosalpha;
803 G4double sinalpha;
804
805 G4Vector3D a1;
806 G4Vector3D a2;
807 G4Vector3D delta;
808 G4Vector3D viewPoint;
809
810
811 //phi spin stuff here
812
813 vp = fVP.GetViewpointDirection ().unit ();
814 up = fVP.GetUpVector ().unit ();
815
816 yprime = (up.cross(vp)).unit();
817 zprime = (vp.cross(yprime)).unit();
818
819 if (fVP.GetLightsMoveWithCamera()) {
820 delta_alpha = dy * deltaRotation;
821 delta_theta = -dx * deltaRotation;
822 } else {
823 delta_alpha = -dy * deltaRotation;
824 delta_theta = dx * deltaRotation;
825 }
826
827 delta_alpha *= deg;
828 delta_theta *= deg;
829
830 new_vp = std::cos(delta_alpha) * vp + std::sin(delta_alpha) * zprime;
831
832 // to avoid z rotation flipping
833 // to allow more than 360° rotation
834
835 const G4Point3D targetPoint
836 = fSceneHandler.GetScene()->GetStandardTargetPoint()
837 + fVP.GetCurrentTargetPoint ();
838 G4double radius = fSceneHandler.GetScene()->GetExtent().GetExtentRadius();
839 if(radius<=0.) radius = 1.;
840 const G4double cameraDistance = fVP.GetCameraDistance (radius);
841 const G4Point3D cameraPosition =
842 targetPoint + cameraDistance * fVP.GetViewpointDirection().unit();
843
844 if (fVP.GetLightsMoveWithCamera()) {
845 new_up = (new_vp.cross(yprime)).unit();
846 if (new_vp.z()*vp.z() <0) {
847 new_up.set(new_up.x(),-new_up.y(),new_up.z());
848 }
849 } else {
850 new_up = up;
851 if (new_vp.z()*vp.z() <0) {
852 new_up.set(new_up.x(),-new_up.y(),new_up.z());
853 }
854 }
855 fVP.SetUpVector(new_up);
856 ////////////////
857 // Rotates by fixed azimuthal angle delta_theta.
858
859 cosalpha = new_up.dot (new_vp.unit());
860 sinalpha = std::sqrt (1. - std::pow (cosalpha, 2));
861 yprime = (new_up.cross (new_vp.unit())).unit ();
862 xprime = yprime.cross (new_up);
863 // Projection of vp on plane perpendicular to up...
864 a1 = sinalpha * xprime;
865 // Required new projection...
866 a2 = sinalpha * (std::cos (delta_theta) * xprime + std::sin (delta_theta) * yprime);
867 // Required Increment vector...
868 delta = a2 - a1;
869 // So new viewpoint is...
870 viewPoint = new_vp.unit() + delta;
871
872 fVP.SetViewAndLights (viewPoint);
873}
874
875#endif
Note: See TracBrowser for help on using the repository browser.