| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which *
7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: *
8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license *
9 // * include a list of copyright holders. <<
10 // * 9 // * *
11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing *
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15 // * use. Please see the license in the file << 14 // * use. *
16 // * for the full disclaimer and the limitatio <<
17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. *
23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // 23 //
>> 24 // $Id: G4OpenGLXViewer.cc,v 1.23 2004/12/07 23:40:59 perl Exp $
>> 25 // GEANT4 tag $Name: geant4-07-00-cand-03 $
27 // 26 //
28 // 27 //
29 // Andrew Walkden 7th February 1997 28 // Andrew Walkden 7th February 1997
30 // G4OpenGLXViewer : Class to provide XWindows 29 // G4OpenGLXViewer : Class to provide XWindows specific
31 // functionality for OpenGL in 30 // functionality for OpenGL in GEANT4
32 31
>> 32 #ifdef G4VIS_BUILD_OPENGLX_DRIVER
>> 33
33 #include "G4OpenGLXViewer.hh" 34 #include "G4OpenGLXViewer.hh"
34 35
35 #include "G4OpenGLSceneHandler.hh" << 36 #include "G4ios.hh"
36 #include "G4OpenGLFontBaseStore.hh" <<
37 37
38 #include "G4VisExtent.hh" 38 #include "G4VisExtent.hh"
39 #include "G4LogicalVolume.hh" 39 #include "G4LogicalVolume.hh"
40 #include "G4VSolid.hh" 40 #include "G4VSolid.hh"
41 #include "G4Point3D.hh" 41 #include "G4Point3D.hh"
42 #include "G4Normal3D.hh" 42 #include "G4Normal3D.hh"
43 #include "G4StateManager.hh" <<
44 #include "G4VisManager.hh" <<
45 #include "G4Text.hh" <<
46 #include "G4Threading.hh" <<
47 43
48 #include <X11/Xatom.h> 44 #include <X11/Xatom.h>
49 #include <X11/Xutil.h> 45 #include <X11/Xutil.h>
50 #include <X11/Xmu/StdCmap.h> <<
51 46
52 #include <assert.h> 47 #include <assert.h>
53 #include <sstream> <<
54 #include <chrono> <<
55 #include <thread> <<
56 48
57 int G4OpenGLXViewer::snglBuf_RGBA[12] = 49 int G4OpenGLXViewer::snglBuf_RGBA[12] =
58 { GLX_RGBA, 50 { GLX_RGBA,
59 GLX_RED_SIZE, 1, 51 GLX_RED_SIZE, 1,
60 GLX_GREEN_SIZE, 1, 52 GLX_GREEN_SIZE, 1,
61 GLX_BLUE_SIZE, 1, 53 GLX_BLUE_SIZE, 1,
62 GLX_DEPTH_SIZE, 1, 54 GLX_DEPTH_SIZE, 1,
63 GLX_STENCIL_SIZE, 1, 55 GLX_STENCIL_SIZE, 1,
64 None }; 56 None };
65 57
66 int G4OpenGLXViewer::dblBuf_RGBA[13] = 58 int G4OpenGLXViewer::dblBuf_RGBA[13] =
67 { GLX_RGBA, 59 { GLX_RGBA,
68 GLX_RED_SIZE, 1, 60 GLX_RED_SIZE, 1,
69 GLX_GREEN_SIZE, 1, 61 GLX_GREEN_SIZE, 1,
70 GLX_BLUE_SIZE, 1, 62 GLX_BLUE_SIZE, 1,
71 GLX_DOUBLEBUFFER, 63 GLX_DOUBLEBUFFER,
72 GLX_DEPTH_SIZE, 1, 64 GLX_DEPTH_SIZE, 1,
73 GLX_STENCIL_SIZE, 1, 65 GLX_STENCIL_SIZE, 1,
74 None }; 66 None };
75 67
76 #define NewString(str) \ 68 #define NewString(str) \
77 ((str) != 0 ? (strncpy((char*)malloc((unsign << 69 ((str) != NULL ? (strcpy((char*)malloc((unsigned)strlen(str) + 1), str)) : (char*)NULL)
78 70
79 #define USE_DEFAULT_COLORMAP 1 71 #define USE_DEFAULT_COLORMAP 1
80 #define USE_STANDARD_COLORMAP 0 72 #define USE_STANDARD_COLORMAP 0
81 73
>> 74 static const char* gouraudtriangleEPS[] =
>> 75 {
>> 76 "/bd{bind def}bind def /triangle { aload pop setrgbcolor aload pop 5 3",
>> 77 "roll 4 2 roll 3 2 roll exch moveto lineto lineto closepath fill } bd",
>> 78 "/computediff1 { 2 copy sub abs threshold ge {pop pop pop true} { exch 2",
>> 79 "index sub abs threshold ge { pop pop true} { sub abs threshold ge } ifelse",
>> 80 "} ifelse } bd /computediff3 { 3 copy 0 get 3 1 roll 0 get 3 1 roll 0 get",
>> 81 "computediff1 {true} { 3 copy 1 get 3 1 roll 1 get 3 1 roll 1 get",
>> 82 "computediff1 {true} { 3 copy 2 get 3 1 roll 2 get 3 1 roll 2 get",
>> 83 "computediff1 } ifelse } ifelse } bd /middlecolor { aload pop 4 -1 roll",
>> 84 "aload pop 4 -1 roll add 2 div 5 1 roll 3 -1 roll add 2 div 3 1 roll add 2",
>> 85 "div 3 1 roll exch 3 array astore } bd /gouraudtriangle { computediff3 { 4",
>> 86 "-1 roll aload 7 1 roll 6 -1 roll pop 3 -1 roll pop add 2 div 3 1 roll add",
>> 87 "2 div exch 3 -1 roll aload 7 1 roll exch pop 4 -1 roll pop add 2 div 3 1",
>> 88 "roll add 2 div exch 3 -1 roll aload 7 1 roll pop 3 -1 roll pop add 2 div 3",
>> 89 "1 roll add 2 div exch 7 3 roll 10 -3 roll dup 3 index middlecolor 4 1 roll",
>> 90 "2 copy middlecolor 4 1 roll 3 copy pop middlecolor 4 1 roll 13 -1 roll",
>> 91 "aload pop 17 index 6 index 15 index 19 index 6 index 17 index 6 array",
>> 92 "astore 10 index 10 index 14 index gouraudtriangle 17 index 5 index 17",
>> 93 "index 19 index 5 index 19 index 6 array astore 10 index 9 index 13 index",
>> 94 "gouraudtriangle 13 index 16 index 5 index 15 index 18 index 5 index 6",
>> 95 "array astore 12 index 12 index 9 index gouraudtriangle 17 index 16 index",
>> 96 "15 index 19 index 18 index 17 index 6 array astore 10 index 12 index 14",
>> 97 "index gouraudtriangle 18 {pop} repeat } { aload pop 5 3 roll aload pop 7 3",
>> 98 "roll aload pop 9 3 roll 4 index 6 index 4 index add add 3 div 10 1 roll 7",
>> 99 "index 5 index 3 index add add 3 div 10 1 roll 6 index 4 index 2 index add",
>> 100 "add 3 div 10 1 roll 9 {pop} repeat 3 array astore triangle } ifelse } bd",
>> 101 NULL
>> 102 };
>> 103
82 XVisualInfo* G4OpenGLXViewer::vi_single_buffe 104 XVisualInfo* G4OpenGLXViewer::vi_single_buffer = 0;
83 XVisualInfo* G4OpenGLXViewer::vi_double_buffe 105 XVisualInfo* G4OpenGLXViewer::vi_double_buffer = 0;
84 106
85 extern "C" { 107 extern "C" {
86 static Bool G4OpenGLXViewerWaitForNotify (Di << 108 Bool G4OpenGLXViewerWaitForNotify (Display*, XEvent* e, char* arg) {
87 return (e->type == MapNotify) && (e->xmap. 109 return (e->type == MapNotify) && (e->xmap.window == (Window) arg);
88 } 110 }
89 } 111 }
90 112
91 void G4OpenGLXViewer::SetView () { 113 void G4OpenGLXViewer::SetView () {
92 if (G4Threading::IsMasterThread()) { << 114 glXMakeCurrent (dpy, win, cx);
93 glXMakeCurrent (dpy, win, cxMaster); << 115 G4OpenGLViewer::SetView ();
94 } else { <<
95 glXMakeCurrent (dpy, win, cxVisSubThread); <<
96 } <<
97 G4OpenGLViewer::SetView (); <<
98 } 116 }
99 117
100 void G4OpenGLXViewer::ShowView () { 118 void G4OpenGLXViewer::ShowView () {
101 // glXWaitGL (); //Wait for effects of all pr << 119 glXWaitGL (); //Wait for effects of all previous OpenGL commands to
102 //be propagated before progres << 120 //be propogated before progressing.
103 // JA: Commented out July 2021 - slows renderi <<
104 // don't see any adverse effects. <<
105 <<
106 glFlush (); 121 glFlush ();
107 <<
108 if (fVP.IsPicking()) { <<
109 G4cout << <<
110 "Window activated for picking (left-mous <<
111 << G4endl; <<
112 while (true) { <<
113 if (XPending(dpy)) { <<
114 XNextEvent(dpy, &event); <<
115 if (event.type == ButtonPress && event.xbutt <<
116 G4cout << Pick(event.xbutton.x, event.xbut <<
117 } <<
118 else if (event.type == ButtonPress && event. <<
119 } <<
120 std::this_thread::sleep_for(std::chrono: <<
121 } <<
122 } <<
123 } 122 }
124 123
125 void G4OpenGLXViewer::SwitchToVisSubThread() << 124 void G4OpenGLXViewer::FinishView () {
126 { << 125 glXWaitGL (); //Wait for effects of all previous OpenGL commands to
127 #ifdef G4MULTITHREADED << 126 //be propogated before progressing.
128 cxVisSubThread = glXCreateContext (dpy, vi, << 127 if (doublebuffer == true) {
129 glXMakeCurrent (dpy, win, cxVisSubThread); << 128 glXSwapBuffers (dpy, win);
130 #endif << 129 }
131 } << 130 else glFlush ();
132 <<
133 void G4OpenGLXViewer::SwitchToMasterThread() <<
134 { <<
135 #ifdef G4MULTITHREADED <<
136 glXMakeCurrent (dpy, win, cxMaster); <<
137 // and destroy sub-thread context <<
138 glXDestroyContext (dpy, cxVisSubThread); <<
139 #endif <<
140 } 131 }
141 132
142 void G4OpenGLXViewer::GetXConnection () { 133 void G4OpenGLXViewer::GetXConnection () {
143 // get a connection. 134 // get a connection.
144 dpy = XOpenDisplay (0); // Uses DISPLAY env << 135 dpy = XOpenDisplay (0);
145 if (!dpy) { 136 if (!dpy) {
146 fViewId = -1; // This flags an error. 137 fViewId = -1; // This flags an error.
147 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 138 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't open display." << G4endl;
148 return; 139 return;
149 } 140 }
150 141
151 // make sure OpenGL is supported and installed 142 // make sure OpenGL is supported and installed properly.
152 if (!glXQueryExtension (dpy, &errorBase, &ev 143 if (!glXQueryExtension (dpy, &errorBase, &eventBase)) {
153 fViewId = -1; // This flags an error. 144 fViewId = -1; // This flags an error.
154 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 145 G4cerr << "G4OpenGLViewer::G4OpenGLViewer X Server has no GLX extension."
155 << G4endl; 146 << G4endl;
156 return; 147 return;
157 } 148 }
158 <<
159 } 149 }
160 150
161 void G4OpenGLXViewer::CreateGLXContext (XVisua 151 void G4OpenGLXViewer::CreateGLXContext (XVisualInfo* v) {
162 152
163 vi = v; 153 vi = v;
164 // get window's attributes 154 // get window's attributes
165 if (!XGetWindowAttributes(dpy, XRootWindow ( 155 if (!XGetWindowAttributes(dpy, XRootWindow (dpy, vi -> screen), &xwa)) {
166 fViewId = -1; // This flags an error. 156 fViewId = -1; // This flags an error.
167 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 157 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't return window attributes"
168 << G4endl; 158 << G4endl;
169 return; 159 return;
170 } 160 }
171 161
172 // create the master GLX context << 162 // create a GLX context
173 cxMaster = glXCreateContext (dpy, vi, 0, tru << 163 cx = glXCreateContext (dpy, vi, 0, true);
174 if (!cxMaster) { << 164 if (!cx) {
175 fViewId = -1; // This flags an error. 165 fViewId = -1; // This flags an error.
176 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 166 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't create context."
177 << G4endl; 167 << G4endl;
178 return; 168 return;
179 } 169 }
180 170
181 // New stab at getting a colormap 171 // New stab at getting a colormap
182 172
183 Status status; 173 Status status;
>> 174 XStandardColormap *standardCmaps = XAllocStandardColormap ();
184 int i, numCmaps; 175 int i, numCmaps;
185 176
186 status = XmuLookupStandardColormap (dpy, 177 status = XmuLookupStandardColormap (dpy,
187 vi -> screen, 178 vi -> screen,
188 vi -> visualid, 179 vi -> visualid,
189 vi -> depth, 180 vi -> depth,
190 XA_RGB_BEST_MAP, << 181 XA_RGB_DEFAULT_MAP,
191 False, 182 False,
192 True); 183 True);
193 << 184
194 if (status == 1) { 185 if (status == 1) {
195 cmap = 0; <<
196 XStandardColormap* standardCmaps = XAllocS <<
197 status = XGetRGBColormaps (dpy, 186 status = XGetRGBColormaps (dpy,
198 XRootWindow (dpy, vi -> screen), << 187 XRootWindow (dpy, vi -> screen),
199 &standardCmaps, 188 &standardCmaps,
200 &numCmaps, 189 &numCmaps,
201 XA_RGB_BEST_MAP); << 190 XA_RGB_DEFAULT_MAP);
202 if (status == 1) { << 191 if (status == 1)
203 for (i = 0; i < numCmaps; i++) { << 192 for (i = 0; i < numCmaps; i++)
204 if (standardCmaps[i].visualid == vi -> visua 193 if (standardCmaps[i].visualid == vi -> visualid) {
205 cmap = standardCmaps[i].colormap; 194 cmap = standardCmaps[i].colormap;
206 break; << 195 XFree (standardCmaps);
207 } 196 }
208 } << 197 G4cout << "Got standard cmap" << G4endl;
209 } <<
210 XFree (standardCmaps); <<
211 if(cmap) { <<
212 if (G4VisManager::GetVerbosity() >= G4Vi <<
213 G4cout << "Got standard cmap" << G4end <<
214 } else { <<
215 //if (G4VisManager::GetVerbosity() >= G4 <<
216 // G4cerr << "G4OpenGLXViewer::G4OpenGL <<
217 // << G4endl; <<
218 cmap = XCreateColormap (dpy, <<
219 XRootWindow(dpy, <<
220 vi -> visual, <<
221 AllocNone); <<
222 if(cmap) { <<
223 if (G4VisManager::GetVerbosity() >= G4 <<
224 G4cout << "Created own cmap" << G4en <<
225 } <<
226 //G.Barrand : at end, we should do a XFr <<
227 } <<
228 } else { 198 } else {
229 cmap = XCreateColormap (dpy, 199 cmap = XCreateColormap (dpy,
230 XRootWindow(dpy, vi -> screen), 200 XRootWindow(dpy, vi -> screen),
231 vi -> visual, 201 vi -> visual,
232 AllocNone); 202 AllocNone);
233 if(cmap) { << 203 G4cout << "Created own cmap" << G4endl;
234 if (G4VisManager::GetVerbosity() >= G4Vi <<
235 G4cout << "Created own cmap" << G4endl <<
236 } <<
237 //G.Barrand : at end, we should do a XFree <<
238 } 204 }
239 205
240 if (!cmap) { 206 if (!cmap) {
241 fViewId = -1; // This flags an error. 207 fViewId = -1; // This flags an error.
242 if (G4VisManager::GetVerbosity() >= G4VisM << 208 G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to allocate a Colormap."
243 G4cout << "G4OpenGLXViewer::G4OpenGLXVie << 209 << G4endl;
244 << G4endl; <<
245 return; 210 return;
246 } 211 }
247 212
248 } 213 }
249 214
250 void G4OpenGLXViewer::CreateMainWindow () { 215 void G4OpenGLXViewer::CreateMainWindow () {
251 216
252 // create a window 217 // create a window
253 swa.colormap = cmap; 218 swa.colormap = cmap;
254 swa.border_pixel = 0; 219 swa.border_pixel = 0;
255 swa.event_mask = ExposureMask | ButtonPressM 220 swa.event_mask = ExposureMask | ButtonPressMask | StructureNotifyMask;
256 swa.backing_store = WhenMapped; 221 swa.backing_store = WhenMapped;
257 222
258 // Window size and position... << 223 // G4int WinSize_x;
259 size_hints = XAllocSizeHints(); << 224 // G4int WinSize_y;
260 << 225 if (xwa.width > xwa.height) {
261 ResizeWindow(fVP.GetWindowSizeHintX(),fVP.Ge << 226 WinSize_x = (xwa.height)/2;
262 << 227 WinSize_y = (xwa.height)/2;
263 G4int x_origin = fVP.GetWindowAbsoluteLocati << 228 }
264 << 229 else {
265 // FIXME, screen size != window size on MAC << 230 WinSize_x = (xwa.width)/2;
266 // size on MAC. L.Garnier 01/2009 << 231 WinSize_y = (xwa.width)/2;
267 G4int y_origin = fVP.GetWindowAbsoluteLocati << 232 }
268 << 233 if (WinSize_x < fVP.GetWindowSizeHintX ())
269 size_hints->base_width = getWinWidth(); << 234 WinSize_x = fVP.GetWindowSizeHintX ();
270 size_hints->base_height = getWinHeight(); << 235 if (WinSize_y < fVP.GetWindowSizeHintY ())
271 size_hints->x = x_origin; << 236 WinSize_y = fVP.GetWindowSizeHintY ();
272 size_hints->y = y_origin; << 237 x_origin = xwa.x;
273 if (fVP.IsWindowSizeHintX () && fVP.IsWindow << 238 y_origin = xwa.y;
274 size_hints->flags |= PSize | PPosition; << 239 G4cout << "Window name: " << fName << G4endl;
275 } else if (fVP.IsWindowSizeHintX () && !(fVP << 240 strncpy (charViewName, fName, 100);
276 size_hints->flags |= PSize; <<
277 } else if ((!fVP.IsWindowSizeHintX ()) && fV <<
278 size_hints->flags |= PPosition; <<
279 } <<
280 if (G4VisManager::GetVerbosity() >= G4VisMan <<
281 G4cout << "Window name: " << fName << G4en <<
282 strncpy (charViewName, fName, 99); charViewN <<
283 char *window_name = charViewName; 241 char *window_name = charViewName;
284 char *icon_name = charViewName; 242 char *icon_name = charViewName;
285 //char tmpatom[] = "XA_WM_NORMAL_HINTS"; 243 //char tmpatom[] = "XA_WM_NORMAL_HINTS";
>> 244 size_hints = XAllocSizeHints();
286 wm_hints = XAllocWMHints(); 245 wm_hints = XAllocWMHints();
287 class_hints = XAllocClassHint(); 246 class_hints = XAllocClassHint();
288 247
>> 248 size_hints -> flags = PPosition | PSize | PMinSize;
>> 249 size_hints -> min_width = 300;
>> 250 size_hints -> min_height = 200;
>> 251
289 XStringListToTextProperty (&window_name, 1, 252 XStringListToTextProperty (&window_name, 1, &windowName);
290 XStringListToTextProperty (&icon_name, 1, &i 253 XStringListToTextProperty (&icon_name, 1, &iconName);
291 254
292 wm_hints -> initial_state = NormalState; 255 wm_hints -> initial_state = NormalState;
293 wm_hints -> input = True; 256 wm_hints -> input = True;
294 wm_hints -> icon_pixmap = icon_pixmap; 257 wm_hints -> icon_pixmap = icon_pixmap;
295 wm_hints -> flags = StateHint | IconPixmapHi 258 wm_hints -> flags = StateHint | IconPixmapHint | InputHint;
296 259
297 class_hints -> res_name = NewString("G4Open 260 class_hints -> res_name = NewString("G4OpenGL");
298 class_hints -> res_class = NewString("G4Open 261 class_hints -> res_class = NewString("G4OpenGL");
299 262
300 win = XCreateWindow (dpy, XRootWindow (dpy, << 263 win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin,
301 y_origin, getWinWidth( << 264 y_origin, WinSize_x, WinSize_y, 0, vi -> depth,
302 InputOutput, vi -> vis << 265 InputOutput, vi -> visual,
303 CWBorderPixel | CWColo << 266 CWBorderPixel | CWColormap |
304 CWEventMask | CWBackin << 267 CWEventMask | CWBackingStore,
305 &swa); << 268 &swa);
306 269
307 XSetWMProperties (dpy, win, &windowName, &i << 270 XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0,
308 size_hints, wm_hints, cla << 271 size_hints, wm_hints, class_hints);
309 272
310 // request X to Draw window on screen. 273 // request X to Draw window on screen.
311 XMapWindow (dpy, win); 274 XMapWindow (dpy, win);
312 275
313 // Wait for window to appear (wait for an "exp 276 // Wait for window to appear (wait for an "expose" event).
314 XIfEvent (dpy, &event, G4OpenGLXViewerWaitFo 277 XIfEvent (dpy, &event, G4OpenGLXViewerWaitForNotify, (char*) win);
315 278
316 // connect the context to a window 279 // connect the context to a window
317 Bool success = glXMakeCurrent (dpy, win, cxM << 280 glXMakeCurrent (dpy, win, cx);
318 if (!success) { <<
319 fViewId = -1; // This flags an error. <<
320 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe <<
321 << G4endl; <<
322 GLint error = GL_NO_ERROR; <<
323 while ((error = glGetError()) != GL_NO_ERR <<
324 switch (error) { <<
325 case GL_INVALID_ENUM : <<
326 G4cout << "GL Error: GL_INVALID_ENUM" << G4e <<
327 case GL_INVALID_VALUE : <<
328 G4cout << "GL Error: GL_INVALID_VALUE" << G4 <<
329 case GL_INVALID_OPERATION : <<
330 G4cout << "GL Error: GL_INVALID_OPERATION" < <<
331 case GL_OUT_OF_MEMORY : <<
332 G4cout << "GL Error: GL_OUT_OF_MEMORY" << G4 <<
333 case GL_STACK_UNDERFLOW : <<
334 G4cout << "GL Error: GL_STACK_UNDERFLOW" << <<
335 case GL_STACK_OVERFLOW : <<
336 G4cout << "GL Error: GL_STACK_OVERFLOW" << G <<
337 default : <<
338 G4cout << "GL Error: " << error << G4endl;br <<
339 } <<
340 } <<
341 return; <<
342 } <<
343 } 281 }
344 282
345 void G4OpenGLXViewer::CreateFontLists() <<
346 { <<
347 std::map<G4double,G4String> fonts; // G4VMa <<
348 fonts[10.] = "-adobe-courier-bold-r-normal-- <<
349 fonts[11.] = "-adobe-courier-bold-r-normal-- <<
350 fonts[12.] = "-adobe-courier-bold-r-normal-- <<
351 fonts[13.] = "fixed"; <<
352 fonts[14.] = "-adobe-courier-bold-r-normal-- <<
353 fonts[17.] = "-adobe-courier-bold-r-normal-- <<
354 fonts[18.] = "-adobe-courier-bold-r-normal-- <<
355 fonts[20.] = "-adobe-courier-bold-r-normal-- <<
356 fonts[24.] = "-adobe-courier-bold-r-normal-- <<
357 fonts[25.] = "-adobe-courier-bold-r-normal-- <<
358 fonts[34.] = "-adobe-courier-bold-r-normal-- <<
359 std::map<G4double,G4String>::const_iterator <<
360 for (i = fonts.begin(); i != fonts.end(); ++ <<
361 XFontStruct* font_info = XLoadQueryFont(dp <<
362 if (!font_info) { <<
363 G4cerr << <<
364 "G4OpenGLXViewer::CreateFontLists XLoadQuery <<
365 << i->second <<
366 << G4endl; <<
367 continue; <<
368 } <<
369 G4int font_base = glGenLists(256); <<
370 if (!font_base) { <<
371 G4cerr << <<
372 "G4OpenGLXViewer::CreateFontLists out of dis <<
373 << G4endl; <<
374 continue; <<
375 } <<
376 G4int first = font_info->min_char_or_byte2 <<
377 G4int last = font_info->max_char_or_byte2 <<
378 glXUseXFont(font_info->fid, first, last-fi <<
379 G4int width = font_info->max_bounds.width; <<
380 G4OpenGLFontBaseStore::AddFontBase <<
381 (this, font_base, i->first, i->second, w <<
382 } <<
383 } <<
384 <<
385 void G4OpenGLXViewer::DrawText(const G4Text& g <<
386 { <<
387 if (isGl2psWriting()) { <<
388 <<
389 G4OpenGLViewer::DrawText(g4text); <<
390 <<
391 } else { <<
392 <<
393 G4VSceneHandler::MarkerSizeType sizeType; <<
394 G4double size = fSceneHandler.GetMarkerSiz <<
395 <<
396 const G4OpenGLFontBaseStore::FontInfo& fon <<
397 G4OpenGLFontBaseStore::GetFontInfo(this, <<
398 if (fontInfo.fFontBase < 0) { <<
399 static G4int callCount = 0; <<
400 ++callCount; <<
401 //if (callCount <= 10 || callCount%100 = <<
402 if (callCount <= 1) { <<
403 G4cout << <<
404 "G4OpenGLXViewer::DrawText: No fonts avail <<
405 << fName << <<
406 "\"\n Called with " <<
407 << g4text <<
408 << G4endl; <<
409 } <<
410 return; <<
411 } <<
412 <<
413 const G4Colour& c = fSceneHandler.GetTextC <<
414 glColor4d(c.GetRed(),c.GetGreen(),c.GetBlu <<
415 <<
416 G4Point3D position = g4text.GetPosition(); <<
417 <<
418 G4String textString = g4text.GetText(); <<
419 const char* textCString = textString.c_str <<
420 <<
421 // Set position for raster-style drawers ( <<
422 glRasterPos3d(position.x(),position.y(),po <<
423 <<
424 glPushAttrib(GL_LIST_BIT); <<
425 <<
426 // Calculate move for centre and right adj <<
427 G4double span = textString.size() * fontIn <<
428 G4double xmove = 0., ymove = 0.; <<
429 switch (g4text.GetLayout()) { <<
430 case G4Text::left: break; <<
431 case G4Text::centre: xmove -= span / 2.; b <<
432 case G4Text::right: xmove -= span; <<
433 } <<
434 <<
435 //Add offsets <<
436 xmove += g4text.GetXOffset(); <<
437 ymove += g4text.GetYOffset(); <<
438 <<
439 // Do move <<
440 glBitmap(0,0,0,0,xmove,ymove,0); <<
441 <<
442 // Write characters <<
443 glListBase(fontInfo.fFontBase); <<
444 glCallLists((G4int)strlen(textCString),GL_ <<
445 glPopAttrib(); <<
446 } <<
447 } <<
448 <<
449 <<
450 G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLScen 283 G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene):
451 G4VViewer (scene, -1), 284 G4VViewer (scene, -1),
452 G4OpenGLViewer (scene), 285 G4OpenGLViewer (scene),
>> 286 print_colour (true),
>> 287 vectored_ps (true),
453 vi_immediate (0), 288 vi_immediate (0),
454 vi_stored (0), << 289 vi_stored (0)
455 vi (0), <<
456 cmap (0) <<
457 { 290 {
458 // To satisfy Coverity << 291
459 xwa.visual = 0; << 292 strcpy (print_string, "G4OpenGL.eps");
460 iconName.value = 0; <<
461 xwa.screen = 0; <<
462 windowName.value = 0; <<
463 293
464 GetXConnection (); 294 GetXConnection ();
465 if (fViewId < 0) return; 295 if (fViewId < 0) return;
466 296
467 // Try for a visual suitable for OpenGLImmed 297 // Try for a visual suitable for OpenGLImmediate..
468 // first try for a single buffered RGB windo 298 // first try for a single buffered RGB window
469 if (!vi_single_buffer) { 299 if (!vi_single_buffer) {
470 vi_single_buffer = 300 vi_single_buffer =
471 glXChooseVisual (dpy, XDefaultScreen (dp 301 glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA);
472 //G.Barrand : we should do a XFree(vi_sing <<
473 } 302 }
474 if (!vi_double_buffer) { 303 if (!vi_double_buffer) {
475 vi_double_buffer = 304 vi_double_buffer =
476 glXChooseVisual (dpy, XDefaultScreen (dp 305 glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA);
477 //G.Barrand : we should do a XFree(vi_doub <<
478 } 306 }
479 307
480 if (vi_single_buffer || vi_double_buffer) { 308 if (vi_single_buffer || vi_double_buffer) {
481 if (!vi_double_buffer) { 309 if (!vi_double_buffer) {
482 G4cout << 310 G4cout <<
483 "G4OpenGLXViewer::G4OpenGLXViewer: unable to 311 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
484 "\n Working with a single buffer." 312 "\n Working with a single buffer."
485 << G4endl; 313 << G4endl;
486 } 314 }
487 } else { 315 } else {
488 if (!vi_single_buffer) { 316 if (!vi_single_buffer) {
489 G4cout << 317 G4cout <<
490 "G4OpenGLXViewer::G4OpenGLXViewer: unable to 318 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual."
491 << G4endl; 319 << G4endl;
492 } 320 }
493 if (!vi_double_buffer) { 321 if (!vi_double_buffer) {
494 G4cout << 322 G4cout <<
495 "G4OpenGLXViewer::G4OpenGLXViewer: unable to 323 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
496 << G4endl; 324 << G4endl;
497 } 325 }
498 } 326 }
499 327
500 if (vi_single_buffer) { 328 if (vi_single_buffer) {
501 vi_immediate = vi_single_buffer; 329 vi_immediate = vi_single_buffer;
502 attributeList = snglBuf_RGBA; 330 attributeList = snglBuf_RGBA;
>> 331 doublebuffer = false;
503 } 332 }
504 333
505 if (!vi_immediate){ 334 if (!vi_immediate){
506 // next try for a double buffered RGB, but 335 // next try for a double buffered RGB, but Draw to top buffer
507 if (vi_double_buffer) { 336 if (vi_double_buffer) {
508 vi_immediate = vi_double_buffer; 337 vi_immediate = vi_double_buffer;
509 attributeList = dblBuf_RGBA; 338 attributeList = dblBuf_RGBA;
>> 339 doublebuffer = true;
510 } 340 }
511 } 341 }
512 342
513 // Now try for a visual suitable for OpenGLS 343 // Now try for a visual suitable for OpenGLStored...
514 // Try for a double buffered RGB window 344 // Try for a double buffered RGB window
515 if (vi_double_buffer) { 345 if (vi_double_buffer) {
516 vi_stored = vi_double_buffer; 346 vi_stored = vi_double_buffer;
517 attributeList = dblBuf_RGBA; 347 attributeList = dblBuf_RGBA;
>> 348 doublebuffer = true;
518 } 349 }
519 350
520 if (!vi_immediate || !vi_stored) { 351 if (!vi_immediate || !vi_stored) {
521 G4cout << 352 G4cout <<
522 "G4OpenGLXViewer::G4OpenGLXViewer: unable 353 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals."
523 << G4endl; 354 << G4endl;
524 fViewId = -1; // This flags an error. 355 fViewId = -1; // This flags an error.
525 } 356 }
526 357
527 // glClearColor (0., 0., 0., 0.); 358 // glClearColor (0., 0., 0., 0.);
528 // glClearDepth (1.); 359 // glClearDepth (1.);
>> 360
529 } 361 }
530 362
531 G4OpenGLXViewer::~G4OpenGLXViewer () { 363 G4OpenGLXViewer::~G4OpenGLXViewer () {
532 if (fViewId >= 0) { 364 if (fViewId >= 0) {
533 //Close a window from here 365 //Close a window from here
534 glXMakeCurrent (dpy, None, NULL); 366 glXMakeCurrent (dpy, None, NULL);
535 glXDestroyContext (dpy, cxMaster); << 367 glXDestroyContext (dpy, cx);
536 if (win) XDestroyWindow (dpy, win); // ... 368 if (win) XDestroyWindow (dpy, win); // ...if already deleted in
537 // sub-class G4OpenGLXmViewer. 369 // sub-class G4OpenGLXmViewer.
538 // We should do a XFreeColormap(dpy,cmap); <<
539 XFlush (dpy); 370 XFlush (dpy);
540 } 371 }
541 } 372 }
542 << 373
>> 374 void G4OpenGLXViewer::print() {
>> 375
>> 376 //using namespace std;
>> 377 //cout << "print_col_callback requested with file name: " << print_string << G4endl;
>> 378
>> 379 if (vectored_ps) {
>> 380 G4int size = 5000000;
>> 381
>> 382 GLfloat* feedback_buffer;
>> 383 GLint returned;
>> 384 FILE* file;
>> 385
>> 386 feedback_buffer = new GLfloat[size];
>> 387 glFeedbackBuffer (size, GL_3D_COLOR, feedback_buffer);
>> 388 glRenderMode (GL_FEEDBACK);
>> 389
>> 390 DrawView();
>> 391 returned = glRenderMode (GL_RENDER);
>> 392
>> 393 if (print_string) {
>> 394 file = fopen (print_string, "w");
>> 395 if (file) {
>> 396 spewWireframeEPS (file, returned, feedback_buffer, "rendereps");
>> 397 } else {
>> 398 printf("Could not open %s\n", print_string);
>> 399 }
>> 400 } else {
>> 401 printBuffer (returned, feedback_buffer);
>> 402 }
>> 403 // free (feedback_buffer);
>> 404 delete[] feedback_buffer;
>> 405
>> 406 } else {
>> 407
>> 408 XVisualInfo* pvi;
>> 409 G4bool new_db;
>> 410 G4bool last_db;
>> 411 GLXContext pcx = create_GL_print_context(pvi, new_db);
>> 412 GLXContext tmp_cx;
>> 413 tmp_cx = cx;
>> 414 cx=pcx;
>> 415 last_db=doublebuffer;
>> 416 doublebuffer=new_db;
>> 417
>> 418 Pixmap pmap = XCreatePixmap (dpy,
>> 419 XRootWindow (dpy, pvi->screen),
>> 420 WinSize_x, WinSize_y,
>> 421 pvi->depth);
>> 422
>> 423 GLXPixmap glxpmap = glXCreateGLXPixmap (dpy,
>> 424 pvi,
>> 425 pmap);
>> 426
>> 427 GLXDrawable tmp_win;
>> 428 tmp_win=win;
>> 429 win=glxpmap;
>> 430
>> 431 glXMakeCurrent (dpy,
>> 432 glxpmap,
>> 433 cx);
>> 434
>> 435 glViewport (0, 0, WinSize_x, WinSize_y);
>> 436
>> 437 ClearView ();
>> 438 DrawView ();
>> 439
>> 440 generateEPS (print_string,
>> 441 print_colour,
>> 442 WinSize_x, WinSize_y);
>> 443
>> 444 win=tmp_win;
>> 445 cx=tmp_cx;
>> 446 doublebuffer=last_db;
>> 447
>> 448 glXMakeCurrent (dpy,
>> 449 glxpmap,
>> 450 cx);
>> 451
>> 452 }
>> 453
>> 454 }
>> 455
>> 456 void G4OpenGLXViewer::print3DcolorVertex(GLint size, GLint * count, GLfloat * buffer)
>> 457 {
>> 458 G4int i;
>> 459
>> 460 printf(" ");
>> 461 for (i = 0; i < 7; i++) {
>> 462 printf("%4.2f ", buffer[size - (*count)]);
>> 463 *count = *count - 1;
>> 464 }
>> 465 printf("\n");
>> 466 }
>> 467
>> 468 void G4OpenGLXViewer::spewWireframeEPS (FILE* file, GLint size, GLfloat* buffer, const char* cr) {
>> 469
>> 470 GLfloat EPS_GOURAUD_THRESHOLD=0.1;
>> 471
>> 472 GLfloat clearColor[4], viewport[4];
>> 473 GLfloat lineWidth;
>> 474 G4int i;
>> 475
>> 476 glGetFloatv (GL_VIEWPORT, viewport);
>> 477 glGetFloatv (GL_COLOR_CLEAR_VALUE, clearColor);
>> 478 glGetFloatv (GL_LINE_WIDTH, &lineWidth);
>> 479 glGetFloatv (GL_POINT_SIZE, &pointSize);
>> 480
>> 481 fputs ("%!PS-Adobe-2.0 EPSF-2.0\n", file);
>> 482 fprintf (file, "%%%%Creator: %s (using OpenGL feedback)\n", cr);
>> 483 fprintf (file, "%%%%BoundingBox: %g %g %g %g\n", viewport[0], viewport[1], viewport[2], viewport[3]);
>> 484 fputs ("%%EndComments\n", file);
>> 485 fputs ("\n", file);
>> 486 fputs ("gsave\n", file);
>> 487 fputs ("\n", file);
>> 488
>> 489 fputs ("% the gouraudtriangle PostScript fragment below is free\n", file);
>> 490 fputs ("% written by Frederic Delhoume (delhoume@ilog.fr)\n", file);
>> 491 fprintf (file, "/threshold %g def\n", EPS_GOURAUD_THRESHOLD);
>> 492 for (i=0; gouraudtriangleEPS[i]; i++) {
>> 493 fprintf (file, "%s\n", gouraudtriangleEPS[i]);
>> 494 }
>> 495
>> 496 fprintf(file, "\n%g setlinewidth\n", lineWidth);
>> 497
>> 498 fprintf (file, "%g %g %g setrgbcolor\n", clearColor[0], clearColor[1], clearColor[2]);
>> 499 fprintf (file, "%g %g %g %g rectfill\n\n", viewport[0], viewport[1], viewport[2], viewport[3]);
>> 500
>> 501 spewSortedFeedback (file, size, buffer);
>> 502
>> 503 fputs ("grestore\n\n", file);
>> 504 fputs ("showpage\n", file);
>> 505
>> 506 fclose(file);
>> 507 }
>> 508
>> 509 void G4OpenGLXViewer::printBuffer (GLint size, GLfloat* buffer) {
>> 510
>> 511 GLint count;
>> 512 G4int token, nvertices;
>> 513
>> 514 count=size;
>> 515 while(count) {
>> 516 token=G4int (buffer[size-count]);
>> 517 count--;
>> 518 switch (token) {
>> 519
>> 520 case GL_PASS_THROUGH_TOKEN:
>> 521 printf ("GL_PASS_THROUGH_TOKEN\n");
>> 522 printf (" %4.2f\n", buffer[size-count]);
>> 523 count--;
>> 524 break;
>> 525
>> 526 case GL_POINT_TOKEN:
>> 527 printf ("GL_POINT_TOKEN\n");
>> 528 print3DcolorVertex (size, &count, buffer);
>> 529 break;
>> 530
>> 531 case GL_LINE_TOKEN:
>> 532 printf ("GL_LINE_TOKEN\n");
>> 533 print3DcolorVertex (size, &count, buffer);
>> 534 print3DcolorVertex (size, &count, buffer);
>> 535 break;
>> 536
>> 537 case GL_LINE_RESET_TOKEN:
>> 538 printf ("GL_LINE_RESET_TOKEN\n");
>> 539 print3DcolorVertex (size, &count, buffer);
>> 540 print3DcolorVertex (size, &count, buffer);
>> 541 break;
>> 542
>> 543 case GL_POLYGON_TOKEN:
>> 544 printf ("GL_POLYGON_TOKEN\n");
>> 545 nvertices=G4int (buffer[size-count]);
>> 546 count--;
>> 547 for (; nvertices>0; nvertices--) {
>> 548 print3DcolorVertex (size, &count, buffer);
>> 549 }
>> 550 }
>> 551 }
>> 552 }
>> 553
>> 554 G4float* G4OpenGLXViewer::spewPrimitiveEPS (FILE* file, GLfloat* loc) {
>> 555
>> 556 G4int token;
>> 557 G4int nvertices, i;
>> 558 GLfloat red, green, blue, intensity;
>> 559 G4int smooth;
>> 560 GLfloat dx, dy, dr, dg, db, absR, absG, absB, colormax;
>> 561 G4int steps;
>> 562 Feedback3Dcolor *vertex;
>> 563 GLfloat xstep(0.), ystep(0.), rstep(0.), gstep(0.), bstep(0.);
>> 564 GLfloat xnext(0.), ynext(0.), rnext(0.), gnext(0.), bnext(0.), distance(0.);
>> 565
>> 566 token=G4int (*loc);
>> 567 loc++;
>> 568 switch (token) {
>> 569 case GL_LINE_RESET_TOKEN:
>> 570 case GL_LINE_TOKEN:
>> 571 vertex=(Feedback3Dcolor*)loc;
>> 572 dr=vertex[1].red - vertex[0].red;
>> 573 dg=vertex[1].green - vertex[0].green;
>> 574 db=vertex[1].blue - vertex[0].blue;
>> 575
>> 576 if (!print_colour) {
>> 577 dr+=(dg+db);
>> 578 dr/=3.0;
>> 579 dg=dr;
>> 580 db=dr;
>> 581 }
>> 582
>> 583 if (dr!=0 || dg!=0 || db!=0) {
>> 584 dx=vertex[1].x - vertex[0].x;
>> 585 dy=vertex[1].y - vertex[0].y;
>> 586 distance=std::sqrt(dx*dx + dy*dy);
>> 587
>> 588 absR=std::fabs(dr);
>> 589 absG=std::fabs(dg);
>> 590 absB=std::fabs(db);
>> 591
>> 592 #define Max(a, b) (((a)>(b))?(a):(b))
>> 593
>> 594 #define EPS_SMOOTH_LINE_FACTOR 0.06
>> 595
>> 596 colormax=Max(absR, Max(absG, absB));
>> 597 steps=Max(1, G4int (colormax*distance*EPS_SMOOTH_LINE_FACTOR));
>> 598
>> 599 xstep=dx/steps;
>> 600 ystep=dy/steps;
>> 601
>> 602 rstep=dr/steps;
>> 603 gstep=dg/steps;
>> 604 bstep=db/steps;
>> 605
>> 606 xnext=vertex[0].x;
>> 607 ynext=vertex[0].y;
>> 608 rnext=vertex[0].red;
>> 609 gnext=vertex[0].green;
>> 610 bnext=vertex[0].blue;
>> 611
>> 612 if (!print_colour) {
>> 613 rnext+=(gnext+bnext);
>> 614 rnext/=3.0;
>> 615 gnext=rnext;
>> 616 bnext=rnext;
>> 617 }
>> 618
>> 619 xnext -= xstep/2.0;
>> 620 ynext -= ystep/2.0;
>> 621 rnext -= rstep/2.0;
>> 622 gnext -= gstep/2.0;
>> 623 bnext -= bstep/2.0;
>> 624 } else {
>> 625 steps=0;
>> 626 }
>> 627 if (print_colour) {
>> 628 fprintf (file, "%g %g %g setrgbcolor\n",
>> 629 vertex[0].red, vertex[0].green, vertex[0].blue);
>> 630 } else {
>> 631 intensity = (vertex[0].red + vertex[0].green + vertex[0].blue) / 3.0;
>> 632 fprintf (file, "%g %g %g setrgbcolor\n",
>> 633 intensity, intensity, intensity);
>> 634 }
>> 635 fprintf (file, "%g %g moveto\n", vertex[0].x, vertex[0].y);
>> 636
>> 637 for (i=0; i<steps; i++) {
>> 638
>> 639 xnext += xstep;
>> 640 ynext += ystep;
>> 641 rnext += rstep;
>> 642 gnext += gstep;
>> 643 bnext += bstep;
>> 644
>> 645 fprintf (file, "%g %g lineto stroke\n", xnext, ynext);
>> 646 fprintf (file, "%g %g %g setrgbcolor\n", rnext, gnext, bnext);
>> 647 fprintf (file, "%g %g moveto\n", xnext, ynext);
>> 648 }
>> 649 fprintf (file, "%g %g lineto stroke\n", vertex[1].x, vertex[1].y);
>> 650
>> 651 loc += 14;
>> 652 break;
>> 653
>> 654 case GL_POLYGON_TOKEN:
>> 655 nvertices = G4int (*loc);
>> 656 loc++;
>> 657 vertex=(Feedback3Dcolor*)loc;
>> 658 if (nvertices>0) {
>> 659 red=vertex[0].red;
>> 660 green=vertex[0].green;
>> 661 blue=vertex[0].blue;
>> 662 smooth=0;
>> 663
>> 664 if (!print_colour) {
>> 665 red+=(green+blue);
>> 666 red/=3.0;
>> 667 green=red;
>> 668 blue=red;
>> 669 }
>> 670
>> 671 if (print_colour) {
>> 672 for (i=1; i<nvertices; i++) {
>> 673 if (red!=vertex[i].red || green!=vertex[i].green || blue!=vertex[i].blue) {
>> 674 smooth=1;
>> 675 break;
>> 676 }
>> 677 }
>> 678 } else {
>> 679 for (i=1; i<nvertices; i++) {
>> 680 intensity = vertex[i].red + vertex[i].green + vertex[i].blue;
>> 681 intensity/=3.0;
>> 682 if (red!=intensity) {
>> 683 smooth=1;
>> 684 break;
>> 685 }
>> 686 }
>> 687 }
>> 688
>> 689 if (smooth) {
>> 690 G4int triOffset;
>> 691 for (i=0; i<nvertices-2; i++) {
>> 692 triOffset = i*7;
>> 693 fprintf (file, "[%g %g %g %g %g %g]",
>> 694 vertex[0].x, vertex[i+1].x, vertex[i+2].x,
>> 695 vertex[0].y, vertex[i+1].y, vertex[i+2].y);
>> 696 if (print_colour) {
>> 697 fprintf (file, " [%g %g %g] [%g %g %g] [%g %g %g] gouraudtriangle\n",
>> 698 vertex[0].red, vertex[0].green, vertex[0].blue,
>> 699 vertex[i+1].red, vertex[i+1].green, vertex[i+1].blue,
>> 700 vertex[i+2].red, vertex[i+2].green, vertex[i+2].blue);
>> 701 } else {
>> 702
>> 703 intensity = vertex[0].red + vertex[0].green + vertex[0].blue;
>> 704 intensity/=3.0;
>> 705 fprintf (file, " [%g %g %g]", intensity, intensity, intensity);
>> 706
>> 707 intensity = vertex[1].red + vertex[1].green + vertex[1].blue;
>> 708 intensity/=3.0;
>> 709 fprintf (file, " [%g %g %g]", intensity, intensity, intensity);
>> 710
>> 711 intensity = vertex[2].red + vertex[2].green + vertex[2].blue;
>> 712 intensity/=3.0;
>> 713 fprintf (file, " [%g %g %g] gouraudtriangle\n", intensity, intensity, intensity);
>> 714 }
>> 715 }
>> 716 } else {
>> 717 fprintf (file, "newpath\n");
>> 718 fprintf (file, "%g %g %g setrgbcolor\n", red, green, blue);
>> 719 fprintf (file, "%g %g moveto\n", vertex[0].x, vertex[0].y);
>> 720 for (i=1; i<nvertices; i++) {
>> 721 fprintf (file, "%g %g lineto\n", vertex[i].x, vertex[i].y);
>> 722 }
>> 723 fprintf (file, "closepath fill\n\n");
>> 724 }
>> 725 }
>> 726 loc += nvertices*7;
>> 727 break;
>> 728
>> 729 case GL_POINT_TOKEN:
>> 730 vertex=(Feedback3Dcolor*)loc;
>> 731 if (print_colour) {
>> 732 fprintf (file, "%g %g %g setrgbcolor\n", vertex[0].red, vertex[0].green, vertex[0].blue);
>> 733 } else {
>> 734 intensity = vertex[0].red + vertex[0].green + vertex[0].blue;
>> 735 intensity/=3.0;
>> 736 fprintf (file, "%g %g %g setrgbcolor\n", intensity, intensity, intensity);
>> 737 }
>> 738 fprintf(file, "%g %g %g 0 360 arc fill\n\n", vertex[0].x, vertex[0].y, pointSize / 2.0);
>> 739 loc += 7; /* Each vertex element in the feedback
>> 740 buffer is 7 GLfloats. */
>> 741 break;
>> 742 default:
>> 743 /* XXX Left as an excersie to the reader. */
>> 744 printf("Incomplete implementation. Unexpected token (%d).\n", token);
>> 745 exit(1);
>> 746 }
>> 747 return loc;
>> 748 }
>> 749
>> 750 typedef struct G4OpenGLXViewerDepthIndex {
>> 751 GLfloat *ptr;
>> 752 GLfloat depth;
>> 753 } DepthIndex;
>> 754
>> 755 extern "C" {
>> 756 int G4OpenGLXViewercompare(const void *a, const void *b)
>> 757 {
>> 758 const DepthIndex *p1 = (DepthIndex *) a;
>> 759 const DepthIndex *p2 = (DepthIndex *) b;
>> 760 GLfloat diff = p2->depth - p1->depth;
>> 761
>> 762 if (diff > 0.0) {
>> 763 return 1;
>> 764 } else if (diff < 0.0) {
>> 765 return -1;
>> 766 } else {
>> 767 return 0;
>> 768 }
>> 769 }
>> 770 }
>> 771
>> 772 void G4OpenGLXViewer::spewSortedFeedback(FILE * file, GLint size, GLfloat * buffer)
>> 773 {
>> 774 int token;
>> 775 GLfloat *loc, *end;
>> 776 Feedback3Dcolor *vertex;
>> 777 GLfloat depthSum;
>> 778 int nprimitives, item;
>> 779 DepthIndex *prims;
>> 780 int nvertices, i;
>> 781
>> 782 end = buffer + size;
>> 783
>> 784 /* Count how many primitives there are. */
>> 785 nprimitives = 0;
>> 786 loc = buffer;
>> 787 while (loc < end) {
>> 788 token = int (*loc);
>> 789 loc++;
>> 790 switch (token) {
>> 791 case GL_LINE_TOKEN:
>> 792 case GL_LINE_RESET_TOKEN:
>> 793 loc += 14;
>> 794 nprimitives++;
>> 795 break;
>> 796 case GL_POLYGON_TOKEN:
>> 797 nvertices = int (*loc);
>> 798 loc++;
>> 799 loc += (7 * nvertices);
>> 800 nprimitives++;
>> 801 break;
>> 802 case GL_POINT_TOKEN:
>> 803 loc += 7;
>> 804 nprimitives++;
>> 805 break;
>> 806 default:
>> 807 /* XXX Left as an excersie to the reader. */
>> 808 printf("Incomplete implementation. Unexpected token (%d).\n",
>> 809 token);
>> 810 exit(1);
>> 811 }
>> 812 }
>> 813
>> 814 /* Allocate an array of pointers that will point back at
>> 815 primitives in the feedback buffer. There will be one
>> 816 entry per primitive. This array is also where we keep the
>> 817 primitive's average depth. There is one entry per
>> 818 primitive in the feedback buffer. */
>> 819 prims = (DepthIndex *) malloc(sizeof(DepthIndex) * nprimitives);
>> 820
>> 821 item = 0;
>> 822 loc = buffer;
>> 823 while (loc < end) {
>> 824 prims[item].ptr = loc; /* Save this primitive's location. */
>> 825 token = int (*loc);
>> 826 loc++;
>> 827 switch (token) {
>> 828 case GL_LINE_TOKEN:
>> 829 case GL_LINE_RESET_TOKEN:
>> 830 vertex = (Feedback3Dcolor *) loc;
>> 831 depthSum = vertex[0].z + vertex[1].z;
>> 832 prims[item].depth = depthSum / 2.0;
>> 833 loc += 14;
>> 834 break;
>> 835 case GL_POLYGON_TOKEN:
>> 836 nvertices = int (*loc);
>> 837 loc++;
>> 838 vertex = (Feedback3Dcolor *) loc;
>> 839 depthSum = vertex[0].z;
>> 840 for (i = 1; i < nvertices; i++) {
>> 841 depthSum += vertex[i].z;
>> 842 }
>> 843 prims[item].depth = depthSum / nvertices;
>> 844 loc += (7 * nvertices);
>> 845 break;
>> 846 case GL_POINT_TOKEN:
>> 847 vertex = (Feedback3Dcolor *) loc;
>> 848 prims[item].depth = vertex[0].z;
>> 849 loc += 7;
>> 850 break;
>> 851 default:
>> 852 /* XXX Left as an excersie to the reader. */
>> 853 assert(1);
>> 854 }
>> 855 item++;
>> 856 }
>> 857 assert(item == nprimitives);
>> 858
>> 859 /* Sort the primitives back to front. */
>> 860 qsort(prims, nprimitives, sizeof(DepthIndex), G4OpenGLXViewercompare);
>> 861
>> 862 /* Understand that sorting by a primitives average depth
>> 863 doesn't allow us to disambiguate some cases like self
>> 864 intersecting polygons. Handling these cases would require
>> 865 breaking up the primitives. That's too involved for this
>> 866 example. Sorting by depth is good enough for lots of
>> 867 applications. */
>> 868
>> 869 /* Emit the Encapsulated PostScript for the primitives in
>> 870 back to front order. */
>> 871 for (item = 0; item < nprimitives; item++) {
>> 872 (void) spewPrimitiveEPS(file, prims[item].ptr);
>> 873 }
>> 874
>> 875 free(prims);
>> 876 }
>> 877
>> 878 GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi, G4bool& db) {
>> 879
>> 880 pvi = glXChooseVisual (dpy,
>> 881 XDefaultScreen (dpy),
>> 882 snglBuf_RGBA);
>> 883
>> 884 if (pvi) {
>> 885 db=false;
>> 886 } else {
>> 887 pvi = glXChooseVisual (dpy,
>> 888 XDefaultScreen (dpy),
>> 889 dblBuf_RGBA);
>> 890 if (!pvi) {
>> 891 db=true;
>> 892 }
>> 893 }
>> 894
>> 895 return glXCreateContext (dpy,
>> 896 pvi,
>> 897 NULL,
>> 898 False);
>> 899 }
>> 900
>> 901 int G4OpenGLXViewer::generateEPS (char* filnam,
>> 902 int inColour,
>> 903 unsigned int width,
>> 904 unsigned int height) {
>> 905
>> 906 FILE* fp;
>> 907 GLubyte* pixels;
>> 908 GLubyte* curpix;
>> 909 int components, pos, i;
>> 910
>> 911 pixels = grabPixels (inColour, width, height);
>> 912
>> 913 if (pixels == NULL)
>> 914 return 1;
>> 915 if (inColour) {
>> 916 components = 3;
>> 917 } else {
>> 918 components = 1;
>> 919 }
>> 920
>> 921 fp = fopen (filnam, "w");
>> 922 if (fp == NULL) {
>> 923 return 2;
>> 924 }
>> 925
>> 926 fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
>> 927 fprintf (fp, "%%%%Title: %s\n", filnam);
>> 928 fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
>> 929 fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
>> 930 fprintf (fp, "%%%%EndComments\n");
>> 931 fprintf (fp, "gsave\n");
>> 932 fprintf (fp, "/bwproc {\n");
>> 933 fprintf (fp, " rgbproc\n");
>> 934 fprintf (fp, " dup length 3 idiv string 0 3 0 \n");
>> 935 fprintf (fp, " 5 -1 roll {\n");
>> 936 fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n");
>> 937 fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
>> 938 fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n");
>> 939 fprintf (fp, " { 2 1 roll } ifelse\n");
>> 940 fprintf (fp, " }forall\n");
>> 941 fprintf (fp, " pop pop pop\n");
>> 942 fprintf (fp, "} def\n");
>> 943 fprintf (fp, "systemdict /colorimage known not {\n");
>> 944 fprintf (fp, " /colorimage {\n");
>> 945 fprintf (fp, " pop\n");
>> 946 fprintf (fp, " pop\n");
>> 947 fprintf (fp, " /rgbproc exch def\n");
>> 948 fprintf (fp, " { bwproc } image\n");
>> 949 fprintf (fp, " } def\n");
>> 950 fprintf (fp, "} if\n");
>> 951 fprintf (fp, "/picstr %d string def\n", width * components);
>> 952 fprintf (fp, "%d %d scale\n", width, height);
>> 953 fprintf (fp, "%d %d %d\n", width, height, 8);
>> 954 fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
>> 955 fprintf (fp, "{currentfile picstr readhexstring pop}\n");
>> 956 fprintf (fp, "false %d\n", components);
>> 957 fprintf (fp, "colorimage\n");
>> 958
>> 959 curpix = (GLubyte*) pixels;
>> 960 pos = 0;
>> 961 for (i = width*height*components; i>0; i--) {
>> 962 fprintf (fp, "%02hx ", *(curpix++));
>> 963 if (++pos >= 32) {
>> 964 fprintf (fp, "\n");
>> 965 pos = 0;
>> 966 }
>> 967 }
>> 968 if (pos)
>> 969 fprintf (fp, "\n");
>> 970
>> 971 fprintf (fp, "grestore\n");
>> 972 fprintf (fp, "showpage\n");
>> 973 delete pixels;
>> 974 fclose (fp);
>> 975 return 0;
>> 976 }
>> 977
>> 978 GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
>> 979
>> 980 GLubyte* buffer;
>> 981 GLint swapbytes, lsbfirst, rowlength;
>> 982 GLint skiprows, skippixels, alignment;
>> 983 GLenum format;
>> 984 int size;
>> 985
>> 986 if (inColor) {
>> 987 format = GL_RGB;
>> 988 size = width*height*3;
>> 989 } else {
>> 990 format = GL_LUMINANCE;
>> 991 size = width*height*1;
>> 992 }
>> 993
>> 994 buffer = new GLubyte[size];
>> 995 if (buffer == NULL)
>> 996 return NULL;
>> 997
>> 998 glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
>> 999 glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
>> 1000 glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
>> 1001
>> 1002 glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
>> 1003 glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
>> 1004 glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
>> 1005
>> 1006 glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
>> 1007 glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
>> 1008 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
>> 1009
>> 1010 glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
>> 1011 glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
>> 1012 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
>> 1013
>> 1014 glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
>> 1015
>> 1016 glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
>> 1017 glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
>> 1018 glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
>> 1019
>> 1020 glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
>> 1021 glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
>> 1022 glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
>> 1023
>> 1024 return buffer;
>> 1025 }
>> 1026
>> 1027 #endif
543 1028