source: trunk/geant4/visualization/OpenGL/src/G4OpenGLXViewer.cc@ 665

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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: G4OpenGLXViewer.cc,v 1.42 2007/05/25 10:47:17 allison Exp $
28// GEANT4 tag $Name: $
29//
30//
31// Andrew Walkden 7th February 1997
32// G4OpenGLXViewer : Class to provide XWindows specific
33// functionality for OpenGL in GEANT4
34
35#ifdef G4VIS_BUILD_OPENGLX_DRIVER
36
37#include "G4OpenGLXViewer.hh"
38
39#include "G4OpenGLFontBaseStore.hh"
40
41#include <sstream>
42
43#include "G4VisExtent.hh"
44#include "G4LogicalVolume.hh"
45#include "G4VSolid.hh"
46#include "G4Point3D.hh"
47#include "G4Normal3D.hh"
48
49#include <X11/Xatom.h>
50#include <X11/Xutil.h>
51
52#include <assert.h>
53
54int G4OpenGLXViewer::snglBuf_RGBA[12] =
55{ GLX_RGBA,
56 GLX_RED_SIZE, 1,
57 GLX_GREEN_SIZE, 1,
58 GLX_BLUE_SIZE, 1,
59 GLX_DEPTH_SIZE, 1,
60 GLX_STENCIL_SIZE, 1,
61 None };
62
63int G4OpenGLXViewer::dblBuf_RGBA[13] =
64{ GLX_RGBA,
65 GLX_RED_SIZE, 1,
66 GLX_GREEN_SIZE, 1,
67 GLX_BLUE_SIZE, 1,
68 GLX_DOUBLEBUFFER,
69 GLX_DEPTH_SIZE, 1,
70 GLX_STENCIL_SIZE, 1,
71 None };
72
73#define NewString(str) \
74 ((str) != NULL ? (strcpy((char*)malloc((unsigned)strlen(str) + 1), str)) : (char*)NULL)
75
76#define USE_DEFAULT_COLORMAP 1
77#define USE_STANDARD_COLORMAP 0
78
79XVisualInfo* G4OpenGLXViewer::vi_single_buffer = 0;
80XVisualInfo* G4OpenGLXViewer::vi_double_buffer = 0;
81
82extern "C" {
83 static Bool G4OpenGLXViewerWaitForNotify (Display*, XEvent* e, char* arg) {
84 return (e->type == MapNotify) && (e->xmap.window == (Window) arg);
85 }
86}
87
88void G4OpenGLXViewer::SetView () {
89 glXMakeCurrent (dpy, win, cx);
90 G4OpenGLViewer::SetView ();
91}
92
93void G4OpenGLXViewer::ShowView () {
94 glXWaitGL (); //Wait for effects of all previous OpenGL commands to
95 //be propagated before progressing.
96 glFlush ();
97
98 if (fVP.IsPicking()) {
99 G4cout <<
100 "Window activated for picking (left-mouse), exit (middle-mouse)."
101 << G4endl;
102 while (true) {
103 if (XPending(dpy)) {
104 XNextEvent(dpy, &event);
105 if (event.type == ButtonPress && event.xbutton.button == 1) {
106 Pick(event.xbutton.x, event.xbutton.y);
107 }
108 else if (event.type == ButtonPress && event.xbutton.button == 2) break;
109 }
110 }
111 }
112}
113
114void G4OpenGLXViewer::GetXConnection () {
115// get a connection.
116 dpy = XOpenDisplay (0);
117 if (!dpy) {
118 fViewId = -1; // This flags an error.
119 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't open display." << G4endl;
120 return;
121 }
122
123// make sure OpenGL is supported and installed properly.
124 if (!glXQueryExtension (dpy, &errorBase, &eventBase)) {
125 fViewId = -1; // This flags an error.
126 G4cerr << "G4OpenGLViewer::G4OpenGLViewer X Server has no GLX extension."
127 << G4endl;
128 return;
129 }
130
131}
132
133void G4OpenGLXViewer::CreateGLXContext (XVisualInfo* v) {
134
135 vi = v;
136// get window's attributes
137 if (!XGetWindowAttributes(dpy, XRootWindow (dpy, vi -> screen), &xwa)) {
138 fViewId = -1; // This flags an error.
139 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't return window attributes"
140 << G4endl;
141 return;
142 }
143
144// create a GLX context
145 cx = glXCreateContext (dpy, vi, 0, true);
146 if (!cx) {
147 fViewId = -1; // This flags an error.
148 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't create context."
149 << G4endl;
150 return;
151 }
152
153// New stab at getting a colormap
154
155 Status status;
156 XStandardColormap *standardCmaps = XAllocStandardColormap ();
157 int i, numCmaps;
158
159 status = XmuLookupStandardColormap (dpy,
160 vi -> screen,
161 vi -> visualid,
162 vi -> depth,
163 XA_RGB_DEFAULT_MAP,
164 False,
165 True);
166
167 if (status == 1) {
168 cmap = 0;
169 status = XGetRGBColormaps (dpy,
170 XRootWindow (dpy, vi -> screen),
171 &standardCmaps,
172 &numCmaps,
173 XA_RGB_DEFAULT_MAP);
174 if (status == 1)
175 for (i = 0; i < numCmaps; i++) {
176 if (standardCmaps[i].visualid == vi -> visualid) {
177 cmap = standardCmaps[i].colormap;
178 XFree (standardCmaps);
179 break;
180 }
181 }
182 if (!cmap) {
183 fViewId = -1; // This flags an error.
184 G4cerr <<
185 "G4OpenGLViewer::G4OpenGLViewer failed to allocate a standard colormap."
186 << G4endl;
187 return;
188 }
189 G4cout << "Got standard cmap" << G4endl;
190 } else {
191 cmap = XCreateColormap (dpy,
192 XRootWindow(dpy, vi -> screen),
193 vi -> visual,
194 AllocNone);
195 G4cout << "Created own cmap" << G4endl;
196 }
197
198 if (!cmap) {
199 fViewId = -1; // This flags an error.
200 G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to allocate a Colormap."
201 << G4endl;
202 return;
203 }
204
205}
206
207void G4OpenGLXViewer::CreateMainWindow () {
208
209// create a window
210 swa.colormap = cmap;
211 swa.border_pixel = 0;
212 swa.event_mask = ExposureMask | ButtonPressMask | StructureNotifyMask;
213 swa.backing_store = WhenMapped;
214
215 // Window size and position...
216 unsigned int width, height;
217 x_origin = 0;
218 y_origin = 0;
219 size_hints = XAllocSizeHints();
220 const G4String& XGeometryString = fVP.GetXGeometryString();
221 int screen_num = DefaultScreen(dpy);
222 if (!XGeometryString.empty()) {
223 G4int geometryResultMask = XParseGeometry
224 ((char*)XGeometryString.c_str(),
225 &x_origin, &y_origin, &width, &height);
226 if (geometryResultMask & (WidthValue | HeightValue)) {
227 if (geometryResultMask & XValue) {
228 if (geometryResultMask & XNegative) {
229 x_origin = DisplayWidth(dpy, screen_num) + x_origin - width;
230 }
231 size_hints->flags |= PPosition;
232 size_hints->x = x_origin;
233 }
234 if (geometryResultMask & YValue) {
235 if (geometryResultMask & YNegative) {
236 y_origin = DisplayHeight(dpy, screen_num) + y_origin - height;
237 }
238 size_hints->flags |= PPosition;
239 size_hints->y = y_origin;
240 }
241 } else {
242 G4cout << "ERROR: Geometry string \""
243 << XGeometryString
244 << "\" invalid. Using \"600x600\"."
245 << G4endl;
246 width = 600;
247 height = 600;
248 }
249 }
250 size_hints->width = width;
251 size_hints->height = height;
252 size_hints->flags |= PSize;
253
254 // G4int WinSize_x;
255 // G4int WinSize_y;
256 WinSize_x = width;
257 WinSize_y = height;
258
259 G4cout << "Window name: " << fName << G4endl;
260 strncpy (charViewName, fName, 100);
261 char *window_name = charViewName;
262 char *icon_name = charViewName;
263 //char tmpatom[] = "XA_WM_NORMAL_HINTS";
264 wm_hints = XAllocWMHints();
265 class_hints = XAllocClassHint();
266
267 XStringListToTextProperty (&window_name, 1, &windowName);
268 XStringListToTextProperty (&icon_name, 1, &iconName);
269
270 wm_hints -> initial_state = NormalState;
271 wm_hints -> input = True;
272 wm_hints -> icon_pixmap = icon_pixmap;
273 wm_hints -> flags = StateHint | IconPixmapHint | InputHint;
274
275 class_hints -> res_name = NewString("G4OpenGL");
276 class_hints -> res_class = NewString("G4OpenGL");
277
278 win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin,
279 y_origin, WinSize_x, WinSize_y, 0, vi -> depth,
280 InputOutput, vi -> visual,
281 CWBorderPixel | CWColormap |
282 CWEventMask | CWBackingStore,
283 &swa);
284
285 XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0,
286 size_hints, wm_hints, class_hints);
287
288// request X to Draw window on screen.
289 XMapWindow (dpy, win);
290
291// Wait for window to appear (wait for an "expose" event).
292 XIfEvent (dpy, &event, G4OpenGLXViewerWaitForNotify, (char*) win);
293
294// connect the context to a window
295 Bool success = glXMakeCurrent (dpy, win, cx);
296 if (!success) {
297 fViewId = -1; // This flags an error.
298 G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to attach a GLX context."
299 << G4endl;
300 GLint error = GL_NO_ERROR;
301 while ((error = glGetError()) != GL_NO_ERROR) {
302 G4cout << "GL Error: " << gluErrorString(error) << G4endl;
303 }
304 return;
305 }
306
307}
308
309void G4OpenGLXViewer::CreateFontLists () {
310
311 std::map<G4double,G4String> fonts; // G4VMarker screen size and font name.
312 fonts[10.] = "-adobe-courier-bold-r-normal--10-100-75-75-m-60-iso8859-1";
313 fonts[11.] = "-adobe-courier-bold-r-normal--11-80-100-100-m-60-iso8859-1";
314 fonts[12.] = "-adobe-courier-bold-r-normal--12-120-75-75-m-70-iso8859-1";
315 fonts[13.] = "fixed";
316 fonts[14.] = "-adobe-courier-bold-r-normal--14-100-100-100-m-90-iso8859-1";
317 fonts[17.] = "-adobe-courier-bold-r-normal--17-120-100-100-m-100-iso8859-1";
318 fonts[18.] = "-adobe-courier-bold-r-normal--18-180-75-75-m-110-iso8859-1";
319 fonts[20.] = "-adobe-courier-bold-r-normal--20-140-100-100-m-110-iso8859-1";
320 fonts[24.] = "-adobe-courier-bold-r-normal--24-240-75-75-m-150-iso8859-1";
321 fonts[25.] = "-adobe-courier-bold-r-normal--25-180-100-100-m-150-iso8859-1";
322 fonts[34.] = "-adobe-courier-bold-r-normal--34-240-100-100-m-200-iso8859-1";
323 std::map<G4double,G4String>::const_iterator i;
324 for (i = fonts.begin(); i != fonts.end(); ++i) {
325 XFontStruct* font_info = XLoadQueryFont(dpy, i->second);
326 if (!font_info) {
327 G4cerr <<
328 "G4OpenGLXViewer: XLoadQueryFont failed for font\n "
329 << i->second
330 << G4endl;
331 continue;
332 }
333 G4int font_base = glGenLists(256);
334 if (!font_base) {
335 G4cerr << "G4OpenGLXViewer: out of display lists for fonts."
336 << G4endl;
337 continue;
338 }
339 G4int first = font_info->min_char_or_byte2;
340 G4int last = font_info->max_char_or_byte2;
341 glXUseXFont(font_info->fid, first, last-first+1,font_base+first);
342 G4OpenGLFontBaseStore::AddFontBase(this,font_base,i->first,i->second);
343 }
344}
345
346G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene):
347G4VViewer (scene, -1),
348G4OpenGLViewer (scene),
349vi_immediate (0),
350vi_stored (0),
351vi (0),
352cmap (0)
353{
354 GetXConnection ();
355 if (fViewId < 0) return;
356
357 // Try for a visual suitable for OpenGLImmediate..
358 // first try for a single buffered RGB window
359 if (!vi_single_buffer) {
360 vi_single_buffer =
361 glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA);
362 }
363 if (!vi_double_buffer) {
364 vi_double_buffer =
365 glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA);
366 }
367
368 if (vi_single_buffer || vi_double_buffer) {
369 if (!vi_double_buffer) {
370 G4cout <<
371 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
372 "\n Working with a single buffer."
373 << G4endl;
374 }
375 } else {
376 if (!vi_single_buffer) {
377 G4cout <<
378 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual."
379 << G4endl;
380 }
381 if (!vi_double_buffer) {
382 G4cout <<
383 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
384 << G4endl;
385 }
386 }
387
388 if (vi_single_buffer) {
389 vi_immediate = vi_single_buffer;
390 attributeList = snglBuf_RGBA;
391 }
392
393 if (!vi_immediate){
394 // next try for a double buffered RGB, but Draw to top buffer
395 if (vi_double_buffer) {
396 vi_immediate = vi_double_buffer;
397 attributeList = dblBuf_RGBA;
398 }
399 }
400
401 // Now try for a visual suitable for OpenGLStored...
402 // Try for a double buffered RGB window
403 if (vi_double_buffer) {
404 vi_stored = vi_double_buffer;
405 attributeList = dblBuf_RGBA;
406 }
407
408 if (!vi_immediate || !vi_stored) {
409 G4cout <<
410 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals."
411 << G4endl;
412 fViewId = -1; // This flags an error.
413 }
414
415 // glClearColor (0., 0., 0., 0.);
416 // glClearDepth (1.);
417}
418
419G4OpenGLXViewer::~G4OpenGLXViewer () {
420 if (fViewId >= 0) {
421 //Close a window from here
422 glXMakeCurrent (dpy, None, NULL);
423 glXDestroyContext (dpy, cx);
424 if (win) XDestroyWindow (dpy, win); // ...if already deleted in
425 // sub-class G4OpenGLXmViewer.
426 XFlush (dpy);
427 }
428}
429
430void G4OpenGLXViewer::print() {
431
432 //using namespace std;
433 //cout << "print_col_callback requested with file name: " << print_string << G4endl;
434
435 if (vectored_ps) {
436
437 G4OpenGLViewer::print();
438
439 } else {
440
441 XVisualInfo* pvi;
442 GLXContext pcx = create_GL_print_context(pvi);
443
444 if (!pcx) {
445 G4cout << "Unable to create print context." << G4endl;
446 return;
447 }
448
449 GLXContext tmp_cx;
450 tmp_cx = cx;
451 cx=pcx;
452
453 Pixmap pmap = XCreatePixmap (dpy,
454 XRootWindow (dpy, pvi->screen),
455 WinSize_x, WinSize_y,
456 pvi->depth);
457
458 GLXPixmap glxpmap = glXCreateGLXPixmap (dpy,
459 pvi,
460 pmap);
461
462 GLXDrawable tmp_win;
463 tmp_win=win;
464 win=glxpmap;
465
466 glXMakeCurrent (dpy,
467 win,
468 cx);
469
470 glViewport (0, 0, WinSize_x, WinSize_y);
471
472 ClearView ();
473 SetView ();
474 DrawView ();
475
476 generateEPS (print_string,
477 print_colour,
478 WinSize_x, WinSize_y);
479
480 win=tmp_win;
481 cx=tmp_cx;
482
483 glXMakeCurrent (dpy,
484 win,
485 cx);
486
487 }
488
489}
490
491GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
492
493 GLubyte* buffer;
494 GLint swapbytes, lsbfirst, rowlength;
495 GLint skiprows, skippixels, alignment;
496 GLenum format;
497 int size;
498
499 if (inColor) {
500 format = GL_RGB;
501 size = width*height*3;
502 } else {
503 format = GL_LUMINANCE;
504 size = width*height*1;
505 }
506
507 buffer = new GLubyte[size];
508 if (buffer == NULL)
509 return NULL;
510
511 glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
512 glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
513 glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
514
515 glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
516 glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
517 glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
518
519 glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
520 glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
521 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
522
523 glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
524 glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
525 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
526
527 glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
528
529 glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
530 glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
531 glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
532
533 glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
534 glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
535 glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
536
537 return buffer;
538}
539
540int G4OpenGLXViewer::generateEPS (char* filnam,
541 int inColour,
542 unsigned int width,
543 unsigned int height) {
544
545 FILE* fp;
546 GLubyte* pixels;
547 GLubyte* curpix;
548 int components, pos, i;
549
550 pixels = grabPixels (inColour, width, height);
551
552 if (pixels == NULL)
553 return 1;
554 if (inColour) {
555 components = 3;
556 } else {
557 components = 1;
558 }
559
560 fp = fopen (filnam, "w");
561 if (fp == NULL) {
562 return 2;
563 }
564
565 fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
566 fprintf (fp, "%%%%Title: %s\n", filnam);
567 fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
568 fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
569 fprintf (fp, "%%%%EndComments\n");
570 fprintf (fp, "gsave\n");
571 fprintf (fp, "/bwproc {\n");
572 fprintf (fp, " rgbproc\n");
573 fprintf (fp, " dup length 3 idiv string 0 3 0 \n");
574 fprintf (fp, " 5 -1 roll {\n");
575 fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n");
576 fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
577 fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n");
578 fprintf (fp, " { 2 1 roll } ifelse\n");
579 fprintf (fp, " }forall\n");
580 fprintf (fp, " pop pop pop\n");
581 fprintf (fp, "} def\n");
582 fprintf (fp, "systemdict /colorimage known not {\n");
583 fprintf (fp, " /colorimage {\n");
584 fprintf (fp, " pop\n");
585 fprintf (fp, " pop\n");
586 fprintf (fp, " /rgbproc exch def\n");
587 fprintf (fp, " { bwproc } image\n");
588 fprintf (fp, " } def\n");
589 fprintf (fp, "} if\n");
590 fprintf (fp, "/picstr %d string def\n", width * components);
591 fprintf (fp, "%d %d scale\n", width, height);
592 fprintf (fp, "%d %d %d\n", width, height, 8);
593 fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
594 fprintf (fp, "{currentfile picstr readhexstring pop}\n");
595 fprintf (fp, "false %d\n", components);
596 fprintf (fp, "colorimage\n");
597
598 curpix = (GLubyte*) pixels;
599 pos = 0;
600 for (i = width*height*components; i>0; i--) {
601 fprintf (fp, "%02hx ", *(curpix++));
602 if (++pos >= 32) {
603 fprintf (fp, "\n");
604 pos = 0;
605 }
606 }
607 if (pos)
608 fprintf (fp, "\n");
609
610 fprintf (fp, "grestore\n");
611 fprintf (fp, "showpage\n");
612 delete pixels;
613 fclose (fp);
614 return 0;
615}
616
617GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi) {
618
619 pvi = glXChooseVisual (dpy,
620 XDefaultScreen (dpy),
621 snglBuf_RGBA);
622
623 if (!pvi) {
624 pvi = glXChooseVisual (dpy,
625 XDefaultScreen (dpy),
626 dblBuf_RGBA);
627 }
628
629 return glXCreateContext (dpy,
630 pvi,
631 NULL,
632 False);
633}
634
635#endif
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