source: trunk/source/visualization/OpenGL/src/G4OpenGLXViewer.cc@ 899

Last change on this file since 899 was 898, checked in by garnier, 17 years ago

x,y position should be ok
  • Property svn:mime-type set to text/cpp
File size: 17.1 KB
RevLine 
[529]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//
[593]27// $Id: G4OpenGLXViewer.cc,v 1.42 2007/05/25 10:47:17 allison Exp $
[850]28// GEANT4 tag $Name: HEAD $
[529]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" {
[593]83 static Bool G4OpenGLXViewerWaitForNotify (Display*, XEvent* e, char* arg) {
[529]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 ();
[593]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 }
[529]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) {
[593]168 cmap = 0;
[529]169 status = XGetRGBColormaps (dpy,
170 XRootWindow (dpy, vi -> screen),
171 &standardCmaps,
172 &numCmaps,
173 XA_RGB_DEFAULT_MAP);
174 if (status == 1)
[593]175 for (i = 0; i < numCmaps; i++) {
[529]176 if (standardCmaps[i].visualid == vi -> visualid) {
177 cmap = standardCmaps[i].colormap;
178 XFree (standardCmaps);
[593]179 break;
[529]180 }
[593]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 }
[529]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 size_hints = XAllocSizeHints();
[898]217
[897]218 fWinSize_x = fVP.GetWindowSizeHintX();
219 fWinSize_y = fVP.GetWindowSizeHintY();
[898]220 G4int x_origin = fVP.GetWindowAbsoluteLocationHintX(DisplayWidth(dpy, vi -> screen));
221 G4int y_origin = fVP.GetWindowAbsoluteLocationHintY(DisplayHeight(dpy, vi -> screen));
222
[897]223 size_hints->base_width = fWinSize_x;
224 size_hints->base_height = fWinSize_y;
[896]225 size_hints->x = x_origin;
226 size_hints->y = y_origin;
227 size_hints->flags |= PSize | PPosition;
[893]228#ifdef G4DEBUG
[897]229 printf("G4OpenGLXViewer::CreateMainWindow CreateWindow Size:W:%d H:%d X:%d Y:%d \n",fWinSize_x,fWinSize_y,x_origin,y_origin);
[893]230#endif
231
[529]232 G4cout << "Window name: " << fName << G4endl;
233 strncpy (charViewName, fName, 100);
234 char *window_name = charViewName;
235 char *icon_name = charViewName;
236 //char tmpatom[] = "XA_WM_NORMAL_HINTS";
237 wm_hints = XAllocWMHints();
238 class_hints = XAllocClassHint();
239
240 XStringListToTextProperty (&window_name, 1, &windowName);
241 XStringListToTextProperty (&icon_name, 1, &iconName);
242
243 wm_hints -> initial_state = NormalState;
244 wm_hints -> input = True;
245 wm_hints -> icon_pixmap = icon_pixmap;
246 wm_hints -> flags = StateHint | IconPixmapHint | InputHint;
247
248 class_hints -> res_name = NewString("G4OpenGL");
249 class_hints -> res_class = NewString("G4OpenGL");
250
[896]251 win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin,
[897]252 y_origin, fWinSize_x, fWinSize_y, 0, vi -> depth,
[896]253 InputOutput, vi -> visual,
254 CWBorderPixel | CWColormap |
255 CWEventMask | CWBackingStore,
256 &swa);
[529]257
[896]258 XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0,
259 size_hints, wm_hints, class_hints);
[529]260
261// request X to Draw window on screen.
262 XMapWindow (dpy, win);
263
264// Wait for window to appear (wait for an "expose" event).
265 XIfEvent (dpy, &event, G4OpenGLXViewerWaitForNotify, (char*) win);
266
267// connect the context to a window
[593]268 Bool success = glXMakeCurrent (dpy, win, cx);
269 if (!success) {
270 fViewId = -1; // This flags an error.
271 G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to attach a GLX context."
272 << G4endl;
273 GLint error = GL_NO_ERROR;
274 while ((error = glGetError()) != GL_NO_ERROR) {
275 G4cout << "GL Error: " << gluErrorString(error) << G4endl;
276 }
277 return;
278 }
[529]279
280}
281
282void G4OpenGLXViewer::CreateFontLists () {
283
284 std::map<G4double,G4String> fonts; // G4VMarker screen size and font name.
285 fonts[10.] = "-adobe-courier-bold-r-normal--10-100-75-75-m-60-iso8859-1";
286 fonts[11.] = "-adobe-courier-bold-r-normal--11-80-100-100-m-60-iso8859-1";
287 fonts[12.] = "-adobe-courier-bold-r-normal--12-120-75-75-m-70-iso8859-1";
288 fonts[13.] = "fixed";
289 fonts[14.] = "-adobe-courier-bold-r-normal--14-100-100-100-m-90-iso8859-1";
290 fonts[17.] = "-adobe-courier-bold-r-normal--17-120-100-100-m-100-iso8859-1";
291 fonts[18.] = "-adobe-courier-bold-r-normal--18-180-75-75-m-110-iso8859-1";
292 fonts[20.] = "-adobe-courier-bold-r-normal--20-140-100-100-m-110-iso8859-1";
293 fonts[24.] = "-adobe-courier-bold-r-normal--24-240-75-75-m-150-iso8859-1";
294 fonts[25.] = "-adobe-courier-bold-r-normal--25-180-100-100-m-150-iso8859-1";
295 fonts[34.] = "-adobe-courier-bold-r-normal--34-240-100-100-m-200-iso8859-1";
296 std::map<G4double,G4String>::const_iterator i;
297 for (i = fonts.begin(); i != fonts.end(); ++i) {
298 XFontStruct* font_info = XLoadQueryFont(dpy, i->second);
299 if (!font_info) {
300 G4cerr <<
301 "G4OpenGLXViewer: XLoadQueryFont failed for font\n "
302 << i->second
303 << G4endl;
304 continue;
305 }
306 G4int font_base = glGenLists(256);
307 if (!font_base) {
308 G4cerr << "G4OpenGLXViewer: out of display lists for fonts."
309 << G4endl;
310 continue;
311 }
312 G4int first = font_info->min_char_or_byte2;
313 G4int last = font_info->max_char_or_byte2;
314 glXUseXFont(font_info->fid, first, last-first+1,font_base+first);
315 G4OpenGLFontBaseStore::AddFontBase(this,font_base,i->first,i->second);
316 }
317}
318
319G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene):
320G4VViewer (scene, -1),
321G4OpenGLViewer (scene),
322vi_immediate (0),
[593]323vi_stored (0),
324vi (0),
325cmap (0)
[529]326{
327 GetXConnection ();
328 if (fViewId < 0) return;
329
330 // Try for a visual suitable for OpenGLImmediate..
331 // first try for a single buffered RGB window
332 if (!vi_single_buffer) {
333 vi_single_buffer =
334 glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA);
335 }
336 if (!vi_double_buffer) {
337 vi_double_buffer =
338 glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA);
339 }
340
341 if (vi_single_buffer || vi_double_buffer) {
342 if (!vi_double_buffer) {
343 G4cout <<
344 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
345 "\n Working with a single buffer."
346 << G4endl;
347 }
348 } else {
349 if (!vi_single_buffer) {
350 G4cout <<
351 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual."
352 << G4endl;
353 }
354 if (!vi_double_buffer) {
355 G4cout <<
356 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
357 << G4endl;
358 }
359 }
360
361 if (vi_single_buffer) {
362 vi_immediate = vi_single_buffer;
363 attributeList = snglBuf_RGBA;
364 }
365
366 if (!vi_immediate){
367 // next try for a double buffered RGB, but Draw to top buffer
368 if (vi_double_buffer) {
369 vi_immediate = vi_double_buffer;
370 attributeList = dblBuf_RGBA;
371 }
372 }
373
374 // Now try for a visual suitable for OpenGLStored...
375 // Try for a double buffered RGB window
376 if (vi_double_buffer) {
377 vi_stored = vi_double_buffer;
378 attributeList = dblBuf_RGBA;
379 }
380
381 if (!vi_immediate || !vi_stored) {
382 G4cout <<
383 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals."
384 << G4endl;
385 fViewId = -1; // This flags an error.
386 }
387
388 // glClearColor (0., 0., 0., 0.);
389 // glClearDepth (1.);
390}
391
392G4OpenGLXViewer::~G4OpenGLXViewer () {
393 if (fViewId >= 0) {
394 //Close a window from here
395 glXMakeCurrent (dpy, None, NULL);
396 glXDestroyContext (dpy, cx);
397 if (win) XDestroyWindow (dpy, win); // ...if already deleted in
398 // sub-class G4OpenGLXmViewer.
399 XFlush (dpy);
400 }
401}
402
403void G4OpenGLXViewer::print() {
404
405 //using namespace std;
406 //cout << "print_col_callback requested with file name: " << print_string << G4endl;
407
408 if (vectored_ps) {
409
[593]410 G4OpenGLViewer::print();
411
[529]412 } else {
413
414 XVisualInfo* pvi;
415 GLXContext pcx = create_GL_print_context(pvi);
[593]416
417 if (!pcx) {
418 G4cout << "Unable to create print context." << G4endl;
419 return;
420 }
421
[529]422 GLXContext tmp_cx;
423 tmp_cx = cx;
424 cx=pcx;
425
426 Pixmap pmap = XCreatePixmap (dpy,
427 XRootWindow (dpy, pvi->screen),
[897]428 fWinSize_x, fWinSize_y,
[529]429 pvi->depth);
430
431 GLXPixmap glxpmap = glXCreateGLXPixmap (dpy,
432 pvi,
433 pmap);
434
435 GLXDrawable tmp_win;
436 tmp_win=win;
437 win=glxpmap;
438
439 glXMakeCurrent (dpy,
[593]440 win,
[529]441 cx);
442
[897]443 glViewport (0, 0, fWinSize_x, fWinSize_y);
[529]444
445 ClearView ();
[593]446 SetView ();
[529]447 DrawView ();
448
449 generateEPS (print_string,
450 print_colour,
[897]451 fWinSize_x, fWinSize_y);
[529]452
453 win=tmp_win;
454 cx=tmp_cx;
455
456 glXMakeCurrent (dpy,
[593]457 win,
[529]458 cx);
459
460 }
461
462}
463
[593]464GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
465
466 GLubyte* buffer;
467 GLint swapbytes, lsbfirst, rowlength;
468 GLint skiprows, skippixels, alignment;
469 GLenum format;
470 int size;
[529]471
[593]472 if (inColor) {
473 format = GL_RGB;
474 size = width*height*3;
475 } else {
476 format = GL_LUMINANCE;
477 size = width*height*1;
[529]478 }
479
[593]480 buffer = new GLubyte[size];
481 if (buffer == NULL)
482 return NULL;
[529]483
[593]484 glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
485 glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
486 glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
[529]487
[593]488 glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
489 glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
490 glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
[529]491
[593]492 glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
493 glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
494 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
[529]495
[593]496 glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
497 glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
498 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
[529]499
[593]500 glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
[529]501
[593]502 glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
503 glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
504 glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
[529]505
[593]506 glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
507 glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
508 glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
[529]509
[593]510 return buffer;
[529]511}
512
513int G4OpenGLXViewer::generateEPS (char* filnam,
514 int inColour,
515 unsigned int width,
516 unsigned int height) {
517
518 FILE* fp;
519 GLubyte* pixels;
520 GLubyte* curpix;
521 int components, pos, i;
522
523 pixels = grabPixels (inColour, width, height);
524
525 if (pixels == NULL)
526 return 1;
527 if (inColour) {
528 components = 3;
529 } else {
530 components = 1;
531 }
532
533 fp = fopen (filnam, "w");
534 if (fp == NULL) {
535 return 2;
536 }
537
538 fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
539 fprintf (fp, "%%%%Title: %s\n", filnam);
540 fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
541 fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
542 fprintf (fp, "%%%%EndComments\n");
543 fprintf (fp, "gsave\n");
544 fprintf (fp, "/bwproc {\n");
545 fprintf (fp, " rgbproc\n");
546 fprintf (fp, " dup length 3 idiv string 0 3 0 \n");
547 fprintf (fp, " 5 -1 roll {\n");
548 fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n");
549 fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
550 fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n");
551 fprintf (fp, " { 2 1 roll } ifelse\n");
552 fprintf (fp, " }forall\n");
553 fprintf (fp, " pop pop pop\n");
554 fprintf (fp, "} def\n");
555 fprintf (fp, "systemdict /colorimage known not {\n");
556 fprintf (fp, " /colorimage {\n");
557 fprintf (fp, " pop\n");
558 fprintf (fp, " pop\n");
559 fprintf (fp, " /rgbproc exch def\n");
560 fprintf (fp, " { bwproc } image\n");
561 fprintf (fp, " } def\n");
562 fprintf (fp, "} if\n");
563 fprintf (fp, "/picstr %d string def\n", width * components);
564 fprintf (fp, "%d %d scale\n", width, height);
565 fprintf (fp, "%d %d %d\n", width, height, 8);
566 fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
567 fprintf (fp, "{currentfile picstr readhexstring pop}\n");
568 fprintf (fp, "false %d\n", components);
569 fprintf (fp, "colorimage\n");
570
571 curpix = (GLubyte*) pixels;
572 pos = 0;
573 for (i = width*height*components; i>0; i--) {
574 fprintf (fp, "%02hx ", *(curpix++));
575 if (++pos >= 32) {
576 fprintf (fp, "\n");
577 pos = 0;
578 }
579 }
580 if (pos)
581 fprintf (fp, "\n");
582
583 fprintf (fp, "grestore\n");
584 fprintf (fp, "showpage\n");
585 delete pixels;
586 fclose (fp);
587 return 0;
588}
589
[593]590GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi) {
[529]591
[593]592 pvi = glXChooseVisual (dpy,
593 XDefaultScreen (dpy),
594 snglBuf_RGBA);
[529]595
[593]596 if (!pvi) {
597 pvi = glXChooseVisual (dpy,
598 XDefaultScreen (dpy),
599 dblBuf_RGBA);
[529]600 }
601
[593]602 return glXCreateContext (dpy,
603 pvi,
604 NULL,
605 False);
[529]606}
607
608#endif
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