| 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 *
12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, *
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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 1.13 2001/11/29 12:14:01 johna Exp $
>> 25 // GEANT4 tag $Name: geant4-04-00 $
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_OPENGL_DRIVER
>> 33
33 #include "G4OpenGLXViewer.hh" 34 #include "G4OpenGLXViewer.hh"
34 35
35 #include "G4OpenGLSceneHandler.hh" << 36 #include <GL/gl.h>
36 #include "G4OpenGLFontBaseStore.hh" << 37 #include <GL/glx.h>
>> 38 #include <GL/glu.h>
>> 39
>> 40 #include "G4ios.hh"
>> 41 #include <assert.h>
>> 42 #include <unistd.h>
>> 43 #include <string.h>
37 44
38 #include "G4VisExtent.hh" 45 #include "G4VisExtent.hh"
39 #include "G4LogicalVolume.hh" 46 #include "G4LogicalVolume.hh"
40 #include "G4VSolid.hh" 47 #include "G4VSolid.hh"
41 #include "G4Point3D.hh" 48 #include "G4Point3D.hh"
42 #include "G4Normal3D.hh" 49 #include "G4Normal3D.hh"
43 #include "G4StateManager.hh" <<
44 #include "G4VisManager.hh" <<
45 #include "G4Text.hh" <<
46 #include "G4Threading.hh" <<
47 50
48 #include <X11/Xatom.h> 51 #include <X11/Xatom.h>
49 #include <X11/Xutil.h> 52 #include <X11/Xutil.h>
50 #include <X11/Xmu/StdCmap.h> <<
51 53
52 #include <assert.h> << 54 #include <stdlib.h>
53 #include <sstream> << 55 #include <string.h>
54 #include <chrono> <<
55 #include <thread> <<
56 <<
57 int G4OpenGLXViewer::snglBuf_RGBA[12] = <<
58 { GLX_RGBA, <<
59 GLX_RED_SIZE, 1, <<
60 GLX_GREEN_SIZE, 1, <<
61 GLX_BLUE_SIZE, 1, <<
62 GLX_DEPTH_SIZE, 1, <<
63 GLX_STENCIL_SIZE, 1, <<
64 None }; <<
65 <<
66 int G4OpenGLXViewer::dblBuf_RGBA[13] = <<
67 { GLX_RGBA, <<
68 GLX_RED_SIZE, 1, <<
69 GLX_GREEN_SIZE, 1, <<
70 GLX_BLUE_SIZE, 1, <<
71 GLX_DOUBLEBUFFER, <<
72 GLX_DEPTH_SIZE, 1, <<
73 GLX_STENCIL_SIZE, 1, <<
74 None }; <<
75 56
76 #define NewString(str) \ 57 #define NewString(str) \
77 ((str) != 0 ? (strncpy((char*)malloc((unsign << 58 ((str) != NULL ? (strcpy((char*)malloc((unsigned)strlen(str) + 1), str)) : (char*)NULL)
78 59
79 #define USE_DEFAULT_COLORMAP 1 60 #define USE_DEFAULT_COLORMAP 1
80 #define USE_STANDARD_COLORMAP 0 61 #define USE_STANDARD_COLORMAP 0
81 62
>> 63 static const char* gouraudtriangleEPS[] =
>> 64 {
>> 65 "/bd{bind def}bind def /triangle { aload pop setrgbcolor aload pop 5 3",
>> 66 "roll 4 2 roll 3 2 roll exch moveto lineto lineto closepath fill } bd",
>> 67 "/computediff1 { 2 copy sub abs threshold ge {pop pop pop true} { exch 2",
>> 68 "index sub abs threshold ge { pop pop true} { sub abs threshold ge } ifelse",
>> 69 "} ifelse } bd /computediff3 { 3 copy 0 get 3 1 roll 0 get 3 1 roll 0 get",
>> 70 "computediff1 {true} { 3 copy 1 get 3 1 roll 1 get 3 1 roll 1 get",
>> 71 "computediff1 {true} { 3 copy 2 get 3 1 roll 2 get 3 1 roll 2 get",
>> 72 "computediff1 } ifelse } ifelse } bd /middlecolor { aload pop 4 -1 roll",
>> 73 "aload pop 4 -1 roll add 2 div 5 1 roll 3 -1 roll add 2 div 3 1 roll add 2",
>> 74 "div 3 1 roll exch 3 array astore } bd /gouraudtriangle { computediff3 { 4",
>> 75 "-1 roll aload 7 1 roll 6 -1 roll pop 3 -1 roll pop add 2 div 3 1 roll add",
>> 76 "2 div exch 3 -1 roll aload 7 1 roll exch pop 4 -1 roll pop add 2 div 3 1",
>> 77 "roll add 2 div exch 3 -1 roll aload 7 1 roll pop 3 -1 roll pop add 2 div 3",
>> 78 "1 roll add 2 div exch 7 3 roll 10 -3 roll dup 3 index middlecolor 4 1 roll",
>> 79 "2 copy middlecolor 4 1 roll 3 copy pop middlecolor 4 1 roll 13 -1 roll",
>> 80 "aload pop 17 index 6 index 15 index 19 index 6 index 17 index 6 array",
>> 81 "astore 10 index 10 index 14 index gouraudtriangle 17 index 5 index 17",
>> 82 "index 19 index 5 index 19 index 6 array astore 10 index 9 index 13 index",
>> 83 "gouraudtriangle 13 index 16 index 5 index 15 index 18 index 5 index 6",
>> 84 "array astore 12 index 12 index 9 index gouraudtriangle 17 index 16 index",
>> 85 "15 index 19 index 18 index 17 index 6 array astore 10 index 12 index 14",
>> 86 "index gouraudtriangle 18 {pop} repeat } { aload pop 5 3 roll aload pop 7 3",
>> 87 "roll aload pop 9 3 roll 4 index 6 index 4 index add add 3 div 10 1 roll 7",
>> 88 "index 5 index 3 index add add 3 div 10 1 roll 6 index 4 index 2 index add",
>> 89 "add 3 div 10 1 roll 9 {pop} repeat 3 array astore triangle } ifelse } bd",
>> 90 NULL
>> 91 };
>> 92
82 XVisualInfo* G4OpenGLXViewer::vi_single_buffe 93 XVisualInfo* G4OpenGLXViewer::vi_single_buffer = 0;
83 XVisualInfo* G4OpenGLXViewer::vi_double_buffe 94 XVisualInfo* G4OpenGLXViewer::vi_double_buffer = 0;
84 95
85 extern "C" { << 96 extern "C"
86 static Bool G4OpenGLXViewerWaitForNotify (Di << 97 {
>> 98 static Bool WaitForNotify (Display*, XEvent* e, char* arg) {
87 return (e->type == MapNotify) && (e->xmap. 99 return (e->type == MapNotify) && (e->xmap.window == (Window) arg);
88 } 100 }
89 } 101 }
90 102
91 void G4OpenGLXViewer::SetView () { 103 void G4OpenGLXViewer::SetView () {
92 if (G4Threading::IsMasterThread()) { << 104 glXMakeCurrent (dpy, win, cx);
93 glXMakeCurrent (dpy, win, cxMaster); << 105 G4OpenGLViewer::SetView ();
94 } else { <<
95 glXMakeCurrent (dpy, win, cxVisSubThread); <<
96 } <<
97 G4OpenGLViewer::SetView (); <<
98 } 106 }
99 107
100 void G4OpenGLXViewer::ShowView () { 108 void G4OpenGLXViewer::ShowView () {
101 // glXWaitGL (); //Wait for effects of all pr << 109 glXWaitGL (); //Wait for effects of all previous OpenGL commands to
102 //be propagated before progres << 110 //be propogated before progressing.
103 // JA: Commented out July 2021 - slows renderi <<
104 // don't see any adverse effects. <<
105 <<
106 glFlush (); 111 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 } <<
124 <<
125 void G4OpenGLXViewer::SwitchToVisSubThread() <<
126 { <<
127 #ifdef G4MULTITHREADED <<
128 cxVisSubThread = glXCreateContext (dpy, vi, <<
129 glXMakeCurrent (dpy, win, cxVisSubThread); <<
130 #endif <<
131 } 112 }
132 113
133 void G4OpenGLXViewer::SwitchToMasterThread() << 114 void G4OpenGLXViewer::FinishView () {
134 { << 115 glXWaitGL (); //Wait for effects of all previous OpenGL commands to
135 #ifdef G4MULTITHREADED << 116 //be propogated before progressing.
136 glXMakeCurrent (dpy, win, cxMaster); << 117 if (doublebuffer == true) {
137 // and destroy sub-thread context << 118 glXSwapBuffers (dpy, win);
138 glXDestroyContext (dpy, cxVisSubThread); << 119 }
139 #endif << 120 else glFlush ();
140 } 121 }
141 122
142 void G4OpenGLXViewer::GetXConnection () { 123 void G4OpenGLXViewer::GetXConnection () {
143 // get a connection. 124 // get a connection.
144 dpy = XOpenDisplay (0); // Uses DISPLAY env << 125 dpy = XOpenDisplay (0);
145 if (!dpy) { 126 if (!dpy) {
146 fViewId = -1; // This flags an error. 127 fViewId = -1; // This flags an error.
147 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 128 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't open display." << G4endl;
148 return; 129 return;
149 } 130 }
150 131
151 // make sure OpenGL is supported and installed 132 // make sure OpenGL is supported and installed properly.
152 if (!glXQueryExtension (dpy, &errorBase, &ev 133 if (!glXQueryExtension (dpy, &errorBase, &eventBase)) {
153 fViewId = -1; // This flags an error. 134 fViewId = -1; // This flags an error.
154 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 135 G4cerr << "G4OpenGLViewer::G4OpenGLViewer X Server has no GLX extension."
155 << G4endl; 136 << G4endl;
156 return; 137 return;
157 } 138 }
158 <<
159 } 139 }
160 140
161 void G4OpenGLXViewer::CreateGLXContext (XVisua 141 void G4OpenGLXViewer::CreateGLXContext (XVisualInfo* v) {
162 142
163 vi = v; 143 vi = v;
164 // get window's attributes 144 // get window's attributes
165 if (!XGetWindowAttributes(dpy, XRootWindow ( 145 if (!XGetWindowAttributes(dpy, XRootWindow (dpy, vi -> screen), &xwa)) {
166 fViewId = -1; // This flags an error. 146 fViewId = -1; // This flags an error.
167 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 147 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't return window attributes"
168 << G4endl; 148 << G4endl;
169 return; 149 return;
170 } 150 }
171 151
172 // create the master GLX context << 152 // create a GLX context
173 cxMaster = glXCreateContext (dpy, vi, 0, tru << 153 cx = glXCreateContext (dpy, vi, 0, true);
174 if (!cxMaster) { << 154 if (!cx) {
175 fViewId = -1; // This flags an error. 155 fViewId = -1; // This flags an error.
176 G4cerr << "G4OpenGLXViewer::G4OpenGLXViewe << 156 G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't create context."
177 << G4endl; 157 << G4endl;
178 return; 158 return;
179 } 159 }
180 160
181 // New stab at getting a colormap 161 // New stab at getting a colormap
182 162
183 Status status; 163 Status status;
>> 164 XStandardColormap *standardCmaps = XAllocStandardColormap ();
184 int i, numCmaps; 165 int i, numCmaps;
185 166
186 status = XmuLookupStandardColormap (dpy, 167 status = XmuLookupStandardColormap (dpy,
187 vi -> screen, 168 vi -> screen,
188 vi -> visualid, 169 vi -> visualid,
189 vi -> depth, 170 vi -> depth,
190 XA_RGB_BEST_MAP, << 171 XA_RGB_DEFAULT_MAP,
191 False, 172 False,
192 True); 173 True);
193 << 174
194 if (status == 1) { 175 if (status == 1) {
195 cmap = 0; <<
196 XStandardColormap* standardCmaps = XAllocS <<
197 status = XGetRGBColormaps (dpy, 176 status = XGetRGBColormaps (dpy,
198 XRootWindow (dpy, vi -> screen), << 177 XRootWindow (dpy, vi -> screen),
199 &standardCmaps, 178 &standardCmaps,
200 &numCmaps, 179 &numCmaps,
201 XA_RGB_BEST_MAP); << 180 XA_RGB_DEFAULT_MAP);
202 if (status == 1) { << 181 if (status == 1)
203 for (i = 0; i < numCmaps; i++) { << 182 for (i = 0; i < numCmaps; i++)
204 if (standardCmaps[i].visualid == vi -> visua 183 if (standardCmaps[i].visualid == vi -> visualid) {
205 cmap = standardCmaps[i].colormap; 184 cmap = standardCmaps[i].colormap;
206 break; << 185 XFree (standardCmaps);
207 } 186 }
208 } << 187 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 { 188 } else {
229 cmap = XCreateColormap (dpy, 189 cmap = XCreateColormap (dpy,
230 XRootWindow(dpy, vi -> screen), 190 XRootWindow(dpy, vi -> screen),
231 vi -> visual, 191 vi -> visual,
232 AllocNone); 192 AllocNone);
233 if(cmap) { << 193 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 } 194 }
239 195
240 if (!cmap) { 196 if (!cmap) {
241 fViewId = -1; // This flags an error. 197 fViewId = -1; // This flags an error.
242 if (G4VisManager::GetVerbosity() >= G4VisM << 198 G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to allocate a Colormap."
243 G4cout << "G4OpenGLXViewer::G4OpenGLXVie << 199 << G4endl;
244 << G4endl; <<
245 return; 200 return;
246 } 201 }
247 202
248 } 203 }
249 204
250 void G4OpenGLXViewer::CreateMainWindow () { 205 void G4OpenGLXViewer::CreateMainWindow () {
251 206
252 // create a window 207 // create a window
253 swa.colormap = cmap; 208 swa.colormap = cmap;
254 swa.border_pixel = 0; 209 swa.border_pixel = 0;
255 swa.event_mask = ExposureMask | ButtonPressM 210 swa.event_mask = ExposureMask | ButtonPressMask | StructureNotifyMask;
256 swa.backing_store = WhenMapped; 211 swa.backing_store = WhenMapped;
257 212
258 // Window size and position... << 213 // G4int WinSize_x;
259 size_hints = XAllocSizeHints(); << 214 // G4int WinSize_y;
260 << 215 if (xwa.width > xwa.height) {
261 ResizeWindow(fVP.GetWindowSizeHintX(),fVP.Ge << 216 WinSize_x = (xwa.height)/2;
262 << 217 WinSize_y = (xwa.height)/2;
263 G4int x_origin = fVP.GetWindowAbsoluteLocati << 218 }
264 << 219 else {
265 // FIXME, screen size != window size on MAC << 220 WinSize_x = (xwa.width)/2;
266 // size on MAC. L.Garnier 01/2009 << 221 WinSize_y = (xwa.width)/2;
267 G4int y_origin = fVP.GetWindowAbsoluteLocati << 222 }
268 << 223 if (WinSize_x < fVP.GetWindowSizeHintX ())
269 size_hints->base_width = getWinWidth(); << 224 WinSize_x = fVP.GetWindowSizeHintX ();
270 size_hints->base_height = getWinHeight(); << 225 if (WinSize_y < fVP.GetWindowSizeHintY ())
271 size_hints->x = x_origin; << 226 WinSize_y = fVP.GetWindowSizeHintY ();
272 size_hints->y = y_origin; << 227 x_origin = xwa.x;
273 if (fVP.IsWindowSizeHintX () && fVP.IsWindow << 228 y_origin = xwa.y;
274 size_hints->flags |= PSize | PPosition; << 229 G4cout << "Window name: " << fName << G4endl;
275 } else if (fVP.IsWindowSizeHintX () && !(fVP << 230 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; 231 char *window_name = charViewName;
284 char *icon_name = charViewName; 232 char *icon_name = charViewName;
285 //char tmpatom[] = "XA_WM_NORMAL_HINTS"; 233 //char tmpatom[] = "XA_WM_NORMAL_HINTS";
>> 234 size_hints = XAllocSizeHints();
286 wm_hints = XAllocWMHints(); 235 wm_hints = XAllocWMHints();
287 class_hints = XAllocClassHint(); 236 class_hints = XAllocClassHint();
288 237
>> 238 size_hints -> flags = PPosition | PSize | PMinSize;
>> 239 size_hints -> min_width = 300;
>> 240 size_hints -> min_height = 200;
>> 241
289 XStringListToTextProperty (&window_name, 1, 242 XStringListToTextProperty (&window_name, 1, &windowName);
290 XStringListToTextProperty (&icon_name, 1, &i 243 XStringListToTextProperty (&icon_name, 1, &iconName);
291 244
292 wm_hints -> initial_state = NormalState; 245 wm_hints -> initial_state = NormalState;
293 wm_hints -> input = True; 246 wm_hints -> input = True;
294 wm_hints -> icon_pixmap = icon_pixmap; 247 wm_hints -> icon_pixmap = icon_pixmap;
295 wm_hints -> flags = StateHint | IconPixmapHi 248 wm_hints -> flags = StateHint | IconPixmapHint | InputHint;
296 249
297 class_hints -> res_name = NewString("G4Open 250 class_hints -> res_name = NewString("G4OpenGL");
298 class_hints -> res_class = NewString("G4Open 251 class_hints -> res_class = NewString("G4OpenGL");
299 252
300 win = XCreateWindow (dpy, XRootWindow (dpy, << 253 win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin,
301 y_origin, getWinWidth( << 254 y_origin, WinSize_x, WinSize_y, 0, vi -> depth,
302 InputOutput, vi -> vis << 255 InputOutput, vi -> visual,
303 CWBorderPixel | CWColo << 256 CWBorderPixel | CWColormap |
304 CWEventMask | CWBackin << 257 CWEventMask | CWBackingStore,
305 &swa); << 258 &swa);
306 259
307 XSetWMProperties (dpy, win, &windowName, &i << 260 XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0,
308 size_hints, wm_hints, cla << 261 size_hints, wm_hints, class_hints);
309 262
310 // request X to Draw window on screen. 263 // request X to Draw window on screen.
311 XMapWindow (dpy, win); 264 XMapWindow (dpy, win);
312 265
313 // Wait for window to appear (wait for an "exp 266 // Wait for window to appear (wait for an "expose" event).
314 XIfEvent (dpy, &event, G4OpenGLXViewerWaitFo << 267 XIfEvent (dpy, &event, WaitForNotify, (char*) win);
315 268
316 // connect the context to a window 269 // connect the context to a window
317 Bool success = glXMakeCurrent (dpy, win, cxM << 270 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 } <<
344 <<
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 } 271 }
384 272
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 273 G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene):
451 G4VViewer (scene, -1), 274 G4VViewer (scene, -1),
452 G4OpenGLViewer (scene), 275 G4OpenGLViewer (scene),
>> 276 print_colour (true),
>> 277 vectored_ps (true),
453 vi_immediate (0), 278 vi_immediate (0),
454 vi_stored (0), << 279 vi_stored (0)
455 vi (0), <<
456 cmap (0) <<
457 { 280 {
458 // To satisfy Coverity << 281
459 xwa.visual = 0; << 282 strcpy (print_string, "G4OpenGL.eps");
460 iconName.value = 0; <<
461 xwa.screen = 0; <<
462 windowName.value = 0; <<
463 283
464 GetXConnection (); 284 GetXConnection ();
465 if (fViewId < 0) return; 285 if (fViewId < 0) return;
466 286
467 // Try for a visual suitable for OpenGLImmed 287 // Try for a visual suitable for OpenGLImmediate..
468 // first try for a single buffered RGB windo 288 // first try for a single buffered RGB window
469 if (!vi_single_buffer) { 289 if (!vi_single_buffer) {
470 vi_single_buffer = 290 vi_single_buffer =
471 glXChooseVisual (dpy, XDefaultScreen (dp 291 glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA);
472 //G.Barrand : we should do a XFree(vi_sing <<
473 } 292 }
>> 293 if (!vi_single_buffer) {
>> 294 G4cout <<
>> 295 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual."
>> 296 << G4endl;
>> 297 }
>> 298
474 if (!vi_double_buffer) { 299 if (!vi_double_buffer) {
475 vi_double_buffer = 300 vi_double_buffer =
476 glXChooseVisual (dpy, XDefaultScreen (dp 301 glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA);
477 //G.Barrand : we should do a XFree(vi_doub <<
478 } 302 }
479 << 303 if (!vi_double_buffer) {
480 if (vi_single_buffer || vi_double_buffer) { << 304 G4cout <<
481 if (!vi_double_buffer) { << 305 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual."
482 G4cout << << 306 << G4endl;
483 "G4OpenGLXViewer::G4OpenGLXViewer: unable to <<
484 "\n Working with a single buffer." <<
485 << G4endl; <<
486 } <<
487 } else { <<
488 if (!vi_single_buffer) { <<
489 G4cout << <<
490 "G4OpenGLXViewer::G4OpenGLXViewer: unable to <<
491 << G4endl; <<
492 } <<
493 if (!vi_double_buffer) { <<
494 G4cout << <<
495 "G4OpenGLXViewer::G4OpenGLXViewer: unable to <<
496 << G4endl; <<
497 } <<
498 } 307 }
499 308
500 if (vi_single_buffer) { 309 if (vi_single_buffer) {
501 vi_immediate = vi_single_buffer; 310 vi_immediate = vi_single_buffer;
502 attributeList = snglBuf_RGBA; 311 attributeList = snglBuf_RGBA;
>> 312 doublebuffer = false;
503 } 313 }
504 314
505 if (!vi_immediate){ 315 if (!vi_immediate){
506 // next try for a double buffered RGB, but 316 // next try for a double buffered RGB, but Draw to top buffer
507 if (vi_double_buffer) { 317 if (vi_double_buffer) {
508 vi_immediate = vi_double_buffer; 318 vi_immediate = vi_double_buffer;
509 attributeList = dblBuf_RGBA; 319 attributeList = dblBuf_RGBA;
>> 320 doublebuffer = true;
510 } 321 }
511 } 322 }
512 323
513 // Now try for a visual suitable for OpenGLS 324 // Now try for a visual suitable for OpenGLStored...
514 // Try for a double buffered RGB window 325 // Try for a double buffered RGB window
515 if (vi_double_buffer) { 326 if (vi_double_buffer) {
516 vi_stored = vi_double_buffer; 327 vi_stored = vi_double_buffer;
517 attributeList = dblBuf_RGBA; 328 attributeList = dblBuf_RGBA;
>> 329 doublebuffer = true;
518 } 330 }
519 331
520 if (!vi_immediate || !vi_stored) { 332 if (!vi_immediate || !vi_stored) {
521 G4cout << 333 G4cout <<
522 "G4OpenGLXViewer::G4OpenGLXViewer: unable 334 "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals."
523 << G4endl; 335 << G4endl;
524 fViewId = -1; // This flags an error. 336 fViewId = -1; // This flags an error.
525 } 337 }
526 338
527 // glClearColor (0., 0., 0., 0.); 339 // glClearColor (0., 0., 0., 0.);
528 // glClearDepth (1.); 340 // glClearDepth (1.);
>> 341
529 } 342 }
530 343
531 G4OpenGLXViewer::~G4OpenGLXViewer () { 344 G4OpenGLXViewer::~G4OpenGLXViewer () {
532 if (fViewId >= 0) { 345 if (fViewId >= 0) {
533 //Close a window from here 346 //Close a window from here
>> 347 glXDestroyContext (dpy, cx);
534 glXMakeCurrent (dpy, None, NULL); 348 glXMakeCurrent (dpy, None, NULL);
535 glXDestroyContext (dpy, cxMaster); <<
536 if (win) XDestroyWindow (dpy, win); // ... 349 if (win) XDestroyWindow (dpy, win); // ...if already deleted in
537 // sub-class G4OpenGLXmViewer. 350 // sub-class G4OpenGLXmViewer.
538 // We should do a XFreeColormap(dpy,cmap); <<
539 XFlush (dpy); 351 XFlush (dpy);
540 } 352 }
541 } 353 }
542 << 354
>> 355 void G4OpenGLXViewer::print() {
>> 356
>> 357 //cout << "print_col_callback requested with file name: " << print_string << G4endl;
>> 358
>> 359 if (vectored_ps) {
>> 360 G4int size = 5000000;
>> 361
>> 362 GLfloat* feedback_buffer;
>> 363 GLint returned;
>> 364 FILE* file;
>> 365
>> 366 feedback_buffer = new GLfloat[size];
>> 367 glFeedbackBuffer (size, GL_3D_COLOR, feedback_buffer);
>> 368 glRenderMode (GL_FEEDBACK);
>> 369
>> 370 DrawView();
>> 371 returned = glRenderMode (GL_RENDER);
>> 372
>> 373 if (print_string) {
>> 374 file = fopen (print_string, "w");
>> 375 if (file) {
>> 376 spewWireframeEPS (file, returned, feedback_buffer, "rendereps");
>> 377 } else {
>> 378 printf("Could not open %s\n", print_string);
>> 379 }
>> 380 } else {
>> 381 printBuffer (returned, feedback_buffer);
>> 382 }
>> 383 // free (feedback_buffer);
>> 384 delete[] feedback_buffer;
>> 385
>> 386 } else {
>> 387
>> 388 XVisualInfo* pvi;
>> 389 G4bool new_db;
>> 390 G4bool last_db;
>> 391 GLXContext pcx = create_GL_print_context(pvi, new_db);
>> 392 GLXContext tmp_cx;
>> 393 tmp_cx = cx;
>> 394 cx=pcx;
>> 395 last_db=doublebuffer;
>> 396 doublebuffer=new_db;
>> 397
>> 398 Pixmap pmap = XCreatePixmap (dpy,
>> 399 XRootWindow (dpy, pvi->screen),
>> 400 WinSize_x, WinSize_y,
>> 401 pvi->depth);
>> 402
>> 403 GLXPixmap glxpmap = glXCreateGLXPixmap (dpy,
>> 404 pvi,
>> 405 pmap);
>> 406
>> 407 GLXDrawable tmp_win;
>> 408 tmp_win=win;
>> 409 win=glxpmap;
>> 410
>> 411 glXMakeCurrent (dpy,
>> 412 glxpmap,
>> 413 cx);
>> 414
>> 415 glViewport (0, 0, WinSize_x, WinSize_y);
>> 416
>> 417 ClearView ();
>> 418 DrawView ();
>> 419
>> 420 generateEPS (print_string,
>> 421 print_colour,
>> 422 WinSize_x, WinSize_y);
>> 423
>> 424 win=tmp_win;
>> 425 cx=tmp_cx;
>> 426 doublebuffer=last_db;
>> 427
>> 428 glXMakeCurrent (dpy,
>> 429 glxpmap,
>> 430 cx);
>> 431
>> 432 }
>> 433
>> 434 }
>> 435
>> 436 void G4OpenGLXViewer::print3DcolorVertex(GLint size, GLint * count, GLfloat * buffer)
>> 437 {
>> 438 G4int i;
>> 439
>> 440 printf(" ");
>> 441 for (i = 0; i < 7; i++) {
>> 442 printf("%4.2f ", buffer[size - (*count)]);
>> 443 *count = *count - 1;
>> 444 }
>> 445 printf("\n");
>> 446 }
>> 447
>> 448 void G4OpenGLXViewer::spewWireframeEPS (FILE* file, GLint size, GLfloat* buffer, const char* cr) {
>> 449
>> 450 GLfloat EPS_GOURAUD_THRESHOLD=0.1;
>> 451
>> 452 GLfloat clearColor[4], viewport[4];
>> 453 GLfloat lineWidth;
>> 454 G4int i;
>> 455
>> 456 glGetFloatv (GL_VIEWPORT, viewport);
>> 457 glGetFloatv (GL_COLOR_CLEAR_VALUE, clearColor);
>> 458 glGetFloatv (GL_LINE_WIDTH, &lineWidth);
>> 459 glGetFloatv (GL_POINT_SIZE, &pointSize);
>> 460
>> 461 fputs ("%!PS-Adobe-2.0 EPSF-2.0\n", file);
>> 462 fprintf (file, "%%%%Creator: %s (using OpenGL feedback)\n", cr);
>> 463 fprintf (file, "%%%%BoundingBox: %g %g %g %g\n", viewport[0], viewport[1], viewport[2], viewport[3]);
>> 464 fputs ("%%EndComments\n", file);
>> 465 fputs ("\n", file);
>> 466 fputs ("gsave\n", file);
>> 467 fputs ("\n", file);
>> 468
>> 469 fputs ("% the gouraudtriangle PostScript fragment below is free\n", file);
>> 470 fputs ("% written by Frederic Delhoume (delhoume@ilog.fr)\n", file);
>> 471 fprintf (file, "/threshold %g def\n", EPS_GOURAUD_THRESHOLD);
>> 472 for (i=0; gouraudtriangleEPS[i]; i++) {
>> 473 fprintf (file, "%s\n", gouraudtriangleEPS[i]);
>> 474 }
>> 475
>> 476 fprintf(file, "\n%g setlinewidth\n", lineWidth);
>> 477
>> 478 fprintf (file, "%g %g %g setrgbcolor\n", clearColor[0], clearColor[1], clearColor[2]);
>> 479 fprintf (file, "%g %g %g %g rectfill\n\n", viewport[0], viewport[1], viewport[2], viewport[3]);
>> 480
>> 481 spewSortedFeedback (file, size, buffer);
>> 482
>> 483 fputs ("grestore\n\n", file);
>> 484 fputs ("showpage\n", file);
>> 485
>> 486 fclose(file);
>> 487 }
>> 488
>> 489 void G4OpenGLXViewer::printBuffer (GLint size, GLfloat* buffer) {
>> 490
>> 491 GLint count;
>> 492 G4int token, nvertices;
>> 493
>> 494 count=size;
>> 495 while(count) {
>> 496 token=G4int (buffer[size-count]);
>> 497 count--;
>> 498 switch (token) {
>> 499
>> 500 case GL_PASS_THROUGH_TOKEN:
>> 501 printf ("GL_PASS_THROUGH_TOKEN\n");
>> 502 printf (" %4.2f\n", buffer[size-count]);
>> 503 count--;
>> 504 break;
>> 505
>> 506 case GL_POINT_TOKEN:
>> 507 printf ("GL_POINT_TOKEN\n");
>> 508 print3DcolorVertex (size, &count, buffer);
>> 509 break;
>> 510
>> 511 case GL_LINE_TOKEN:
>> 512 printf ("GL_LINE_TOKEN\n");
>> 513 print3DcolorVertex (size, &count, buffer);
>> 514 print3DcolorVertex (size, &count, buffer);
>> 515 break;
>> 516
>> 517 case GL_LINE_RESET_TOKEN:
>> 518 printf ("GL_LINE_RESET_TOKEN\n");
>> 519 print3DcolorVertex (size, &count, buffer);
>> 520 print3DcolorVertex (size, &count, buffer);
>> 521 break;
>> 522
>> 523 case GL_POLYGON_TOKEN:
>> 524 printf ("GL_POLYGON_TOKEN\n");
>> 525 nvertices=G4int (buffer[size-count]);
>> 526 count--;
>> 527 for (; nvertices>0; nvertices--) {
>> 528 print3DcolorVertex (size, &count, buffer);
>> 529 }
>> 530 }
>> 531 }
>> 532 }
>> 533
>> 534 G4float* G4OpenGLXViewer::spewPrimitiveEPS (FILE* file, GLfloat* loc) {
>> 535
>> 536 G4int token;
>> 537 G4int nvertices, i;
>> 538 GLfloat red, green, blue, intensity;
>> 539 G4int smooth;
>> 540 GLfloat dx, dy, dr, dg, db, absR, absG, absB, colormax;
>> 541 G4int steps;
>> 542 Feedback3Dcolor *vertex;
>> 543 GLfloat xstep(0.), ystep(0.), rstep(0.), gstep(0.), bstep(0.);
>> 544 GLfloat xnext(0.), ynext(0.), rnext(0.), gnext(0.), bnext(0.), distance(0.);
>> 545
>> 546 token=G4int (*loc);
>> 547 loc++;
>> 548 switch (token) {
>> 549 case GL_LINE_RESET_TOKEN:
>> 550 case GL_LINE_TOKEN:
>> 551 vertex=(Feedback3Dcolor*)loc;
>> 552 dr=vertex[1].red - vertex[0].red;
>> 553 dg=vertex[1].green - vertex[0].green;
>> 554 db=vertex[1].blue - vertex[0].blue;
>> 555
>> 556 if (!print_colour) {
>> 557 dr+=(dg+db);
>> 558 dr/=3.0;
>> 559 dg=dr;
>> 560 db=dr;
>> 561 }
>> 562
>> 563 if (dr!=0 || dg!=0 || db!=0) {
>> 564 dx=vertex[1].x - vertex[0].x;
>> 565 dy=vertex[1].y - vertex[0].y;
>> 566 distance=sqrt(dx*dx + dy*dy);
>> 567
>> 568 absR=fabs(dr);
>> 569 absG=fabs(dg);
>> 570 absB=fabs(db);
>> 571
>> 572 #define Max(a, b) (((a)>(b))?(a):(b))
>> 573
>> 574 #define EPS_SMOOTH_LINE_FACTOR 0.06
>> 575
>> 576 colormax=Max(absR, Max(absG, absB));
>> 577 steps=Max(1, G4int (colormax*distance*EPS_SMOOTH_LINE_FACTOR));
>> 578
>> 579 xstep=dx/steps;
>> 580 ystep=dy/steps;
>> 581
>> 582 rstep=dr/steps;
>> 583 gstep=dg/steps;
>> 584 bstep=db/steps;
>> 585
>> 586 xnext=vertex[0].x;
>> 587 ynext=vertex[0].y;
>> 588 rnext=vertex[0].red;
>> 589 gnext=vertex[0].green;
>> 590 bnext=vertex[0].blue;
>> 591
>> 592 if (!print_colour) {
>> 593 rnext+=(gnext+bnext);
>> 594 rnext/=3.0;
>> 595 gnext=rnext;
>> 596 bnext=rnext;
>> 597 }
>> 598
>> 599 xnext -= xstep/2.0;
>> 600 ynext -= ystep/2.0;
>> 601 rnext -= rstep/2.0;
>> 602 gnext -= gstep/2.0;
>> 603 bnext -= bstep/2.0;
>> 604 } else {
>> 605 steps=0;
>> 606 }
>> 607 if (print_colour) {
>> 608 fprintf (file, "%g %g %g setrgbcolor\n",
>> 609 vertex[0].red, vertex[0].green, vertex[0].blue);
>> 610 } else {
>> 611 intensity = (vertex[0].red + vertex[0].green + vertex[0].blue) / 3.0;
>> 612 fprintf (file, "%g %g %g setrgbcolor\n",
>> 613 intensity, intensity, intensity);
>> 614 }
>> 615 fprintf (file, "%g %g moveto\n", vertex[0].x, vertex[0].y);
>> 616
>> 617 for (i=0; i<steps; i++) {
>> 618
>> 619 xnext += xstep;
>> 620 ynext += ystep;
>> 621 rnext += rstep;
>> 622 gnext += gstep;
>> 623 bnext += bstep;
>> 624
>> 625 fprintf (file, "%g %g lineto stroke\n", xnext, ynext);
>> 626 fprintf (file, "%g %g %g setrgbcolor\n", rnext, gnext, bnext);
>> 627 fprintf (file, "%g %g moveto\n", xnext, ynext);
>> 628 }
>> 629 fprintf (file, "%g %g lineto stroke\n", vertex[1].x, vertex[1].y);
>> 630
>> 631 loc += 14;
>> 632 break;
>> 633
>> 634 case GL_POLYGON_TOKEN:
>> 635 nvertices = G4int (*loc);
>> 636 loc++;
>> 637 vertex=(Feedback3Dcolor*)loc;
>> 638 if (nvertices>0) {
>> 639 red=vertex[0].red;
>> 640 green=vertex[0].green;
>> 641 blue=vertex[0].blue;
>> 642 smooth=0;
>> 643
>> 644 if (!print_colour) {
>> 645 red+=(green+blue);
>> 646 red/=3.0;
>> 647 green=red;
>> 648 blue=red;
>> 649 }
>> 650
>> 651 if (print_colour) {
>> 652 for (i=1; i<nvertices; i++) {
>> 653 if (red!=vertex[i].red || green!=vertex[i].green || blue!=vertex[i].blue) {
>> 654 smooth=1;
>> 655 break;
>> 656 }
>> 657 }
>> 658 } else {
>> 659 for (i=1; i<nvertices; i++) {
>> 660 intensity = vertex[i].red + vertex[i].green + vertex[i].blue;
>> 661 intensity/=3.0;
>> 662 if (red!=intensity) {
>> 663 smooth=1;
>> 664 break;
>> 665 }
>> 666 }
>> 667 }
>> 668
>> 669 if (smooth) {
>> 670 G4int triOffset;
>> 671 for (i=0; i<nvertices-2; i++) {
>> 672 triOffset = i*7;
>> 673 fprintf (file, "[%g %g %g %g %g %g]",
>> 674 vertex[0].x, vertex[i+1].x, vertex[i+2].x,
>> 675 vertex[0].y, vertex[i+1].y, vertex[i+2].y);
>> 676 if (print_colour) {
>> 677 fprintf (file, " [%g %g %g] [%g %g %g] [%g %g %g] gouraudtriangle\n",
>> 678 vertex[0].red, vertex[0].green, vertex[0].blue,
>> 679 vertex[i+1].red, vertex[i+1].green, vertex[i+1].blue,
>> 680 vertex[i+2].red, vertex[i+2].green, vertex[i+2].blue);
>> 681 } else {
>> 682
>> 683 intensity = vertex[0].red + vertex[0].green + vertex[0].blue;
>> 684 intensity/=3.0;
>> 685 fprintf (file, " [%g %g %g]", intensity, intensity, intensity);
>> 686
>> 687 intensity = vertex[1].red + vertex[1].green + vertex[1].blue;
>> 688 intensity/=3.0;
>> 689 fprintf (file, " [%g %g %g]", intensity, intensity, intensity);
>> 690
>> 691 intensity = vertex[2].red + vertex[2].green + vertex[2].blue;
>> 692 intensity/=3.0;
>> 693 fprintf (file, " [%g %g %g] gouraudtriangle\n", intensity, intensity, intensity);
>> 694 }
>> 695 }
>> 696 } else {
>> 697 fprintf (file, "newpath\n");
>> 698 fprintf (file, "%g %g %g setrgbcolor\n", red, green, blue);
>> 699 fprintf (file, "%g %g moveto\n", vertex[0].x, vertex[0].y);
>> 700 for (i=1; i<nvertices; i++) {
>> 701 fprintf (file, "%g %g lineto\n", vertex[i].x, vertex[i].y);
>> 702 }
>> 703 fprintf (file, "closepath fill\n\n");
>> 704 }
>> 705 }
>> 706 loc += nvertices*7;
>> 707 break;
>> 708
>> 709 case GL_POINT_TOKEN:
>> 710 vertex=(Feedback3Dcolor*)loc;
>> 711 if (print_colour) {
>> 712 fprintf (file, "%g %g %g setrgbcolor\n", vertex[0].red, vertex[0].green, vertex[0].blue);
>> 713 } else {
>> 714 intensity = vertex[0].red + vertex[0].green + vertex[0].blue;
>> 715 intensity/=3.0;
>> 716 fprintf (file, "%g %g %g setrgbcolor\n", intensity, intensity, intensity);
>> 717 }
>> 718 fprintf(file, "%g %g %g 0 360 arc fill\n\n", vertex[0].x, vertex[0].y, pointSize / 2.0);
>> 719 loc += 7; /* Each vertex element in the feedback
>> 720 buffer is 7 GLfloats. */
>> 721 break;
>> 722 default:
>> 723 /* XXX Left as an excersie to the reader. */
>> 724 printf("Incomplete implementation. Unexpected token (%d).\n", token);
>> 725 exit(1);
>> 726 }
>> 727 return loc;
>> 728 }
>> 729
>> 730 typedef struct _DepthIndex {
>> 731 GLfloat *ptr;
>> 732 GLfloat depth;
>> 733 } DepthIndex;
>> 734
>> 735 extern "C"
>> 736 {
>> 737 static int
>> 738 compare(const void *a, const void *b)
>> 739 {
>> 740 const DepthIndex *p1 = (DepthIndex *) a;
>> 741 const DepthIndex *p2 = (DepthIndex *) b;
>> 742 GLfloat diff = p2->depth - p1->depth;
>> 743
>> 744 if (diff > 0.0) {
>> 745 return 1;
>> 746 } else if (diff < 0.0) {
>> 747 return -1;
>> 748 } else {
>> 749 return 0;
>> 750 }
>> 751 }
>> 752 }
>> 753
>> 754 void G4OpenGLXViewer::spewSortedFeedback(FILE * file, GLint size, GLfloat * buffer)
>> 755 {
>> 756 int token;
>> 757 GLfloat *loc, *end;
>> 758 Feedback3Dcolor *vertex;
>> 759 GLfloat depthSum;
>> 760 int nprimitives, item;
>> 761 DepthIndex *prims;
>> 762 int nvertices, i;
>> 763
>> 764 end = buffer + size;
>> 765
>> 766 /* Count how many primitives there are. */
>> 767 nprimitives = 0;
>> 768 loc = buffer;
>> 769 while (loc < end) {
>> 770 token = int (*loc);
>> 771 loc++;
>> 772 switch (token) {
>> 773 case GL_LINE_TOKEN:
>> 774 case GL_LINE_RESET_TOKEN:
>> 775 loc += 14;
>> 776 nprimitives++;
>> 777 break;
>> 778 case GL_POLYGON_TOKEN:
>> 779 nvertices = int (*loc);
>> 780 loc++;
>> 781 loc += (7 * nvertices);
>> 782 nprimitives++;
>> 783 break;
>> 784 case GL_POINT_TOKEN:
>> 785 loc += 7;
>> 786 nprimitives++;
>> 787 break;
>> 788 default:
>> 789 /* XXX Left as an excersie to the reader. */
>> 790 printf("Incomplete implementation. Unexpected token (%d).\n",
>> 791 token);
>> 792 exit(1);
>> 793 }
>> 794 }
>> 795
>> 796 /* Allocate an array of pointers that will point back at
>> 797 primitives in the feedback buffer. There will be one
>> 798 entry per primitive. This array is also where we keep the
>> 799 primitive's average depth. There is one entry per
>> 800 primitive in the feedback buffer. */
>> 801 prims = (DepthIndex *) malloc(sizeof(DepthIndex) * nprimitives);
>> 802
>> 803 item = 0;
>> 804 loc = buffer;
>> 805 while (loc < end) {
>> 806 prims[item].ptr = loc; /* Save this primitive's location. */
>> 807 token = int (*loc);
>> 808 loc++;
>> 809 switch (token) {
>> 810 case GL_LINE_TOKEN:
>> 811 case GL_LINE_RESET_TOKEN:
>> 812 vertex = (Feedback3Dcolor *) loc;
>> 813 depthSum = vertex[0].z + vertex[1].z;
>> 814 prims[item].depth = depthSum / 2.0;
>> 815 loc += 14;
>> 816 break;
>> 817 case GL_POLYGON_TOKEN:
>> 818 nvertices = int (*loc);
>> 819 loc++;
>> 820 vertex = (Feedback3Dcolor *) loc;
>> 821 depthSum = vertex[0].z;
>> 822 for (i = 1; i < nvertices; i++) {
>> 823 depthSum += vertex[i].z;
>> 824 }
>> 825 prims[item].depth = depthSum / nvertices;
>> 826 loc += (7 * nvertices);
>> 827 break;
>> 828 case GL_POINT_TOKEN:
>> 829 vertex = (Feedback3Dcolor *) loc;
>> 830 prims[item].depth = vertex[0].z;
>> 831 loc += 7;
>> 832 break;
>> 833 default:
>> 834 /* XXX Left as an excersie to the reader. */
>> 835 assert(1);
>> 836 }
>> 837 item++;
>> 838 }
>> 839 assert(item == nprimitives);
>> 840
>> 841 /* Sort the primitives back to front. */
>> 842 qsort(prims, nprimitives, sizeof(DepthIndex), compare);
>> 843
>> 844 /* Understand that sorting by a primitives average depth
>> 845 doesn't allow us to disambiguate some cases like self
>> 846 intersecting polygons. Handling these cases would require
>> 847 breaking up the primitives. That's too involved for this
>> 848 example. Sorting by depth is good enough for lots of
>> 849 applications. */
>> 850
>> 851 /* Emit the Encapsulated PostScript for the primitives in
>> 852 back to front order. */
>> 853 for (item = 0; item < nprimitives; item++) {
>> 854 (void) spewPrimitiveEPS(file, prims[item].ptr);
>> 855 }
>> 856
>> 857 free(prims);
>> 858 }
>> 859
>> 860 GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi, G4bool& db) {
>> 861
>> 862 pvi = glXChooseVisual (dpy,
>> 863 XDefaultScreen (dpy),
>> 864 snglBuf_RGBA);
>> 865
>> 866 if (pvi) {
>> 867 db=false;
>> 868 } else {
>> 869 pvi = glXChooseVisual (dpy,
>> 870 XDefaultScreen (dpy),
>> 871 dblBuf_RGBA);
>> 872 if (!pvi) {
>> 873 db=true;
>> 874 }
>> 875 }
>> 876
>> 877 return glXCreateContext (dpy,
>> 878 pvi,
>> 879 NULL,
>> 880 False);
>> 881 }
>> 882
>> 883 int G4OpenGLXViewer::generateEPS (char* filnam,
>> 884 int inColour,
>> 885 unsigned int width,
>> 886 unsigned int height) {
>> 887
>> 888 FILE* fp;
>> 889 GLubyte* pixels;
>> 890 GLubyte* curpix;
>> 891 int components, pos, i;
>> 892
>> 893 pixels = grabPixels (inColour, width, height);
>> 894
>> 895 if (pixels == NULL)
>> 896 return 1;
>> 897 if (inColour) {
>> 898 components = 3;
>> 899 } else {
>> 900 components = 1;
>> 901 }
>> 902
>> 903 fp = fopen (filnam, "w");
>> 904 if (fp == NULL) {
>> 905 return 2;
>> 906 }
>> 907
>> 908 fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n");
>> 909 fprintf (fp, "%%%%Title: %s\n", filnam);
>> 910 fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n");
>> 911 fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height);
>> 912 fprintf (fp, "%%%%EndComments\n");
>> 913 fprintf (fp, "gsave\n");
>> 914 fprintf (fp, "/bwproc {\n");
>> 915 fprintf (fp, " rgbproc\n");
>> 916 fprintf (fp, " dup length 3 idiv string 0 3 0 \n");
>> 917 fprintf (fp, " 5 -1 roll {\n");
>> 918 fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n");
>> 919 fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n");
>> 920 fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n");
>> 921 fprintf (fp, " { 2 1 roll } ifelse\n");
>> 922 fprintf (fp, " }forall\n");
>> 923 fprintf (fp, " pop pop pop\n");
>> 924 fprintf (fp, "} def\n");
>> 925 fprintf (fp, "systemdict /colorimage known not {\n");
>> 926 fprintf (fp, " /colorimage {\n");
>> 927 fprintf (fp, " pop\n");
>> 928 fprintf (fp, " pop\n");
>> 929 fprintf (fp, " /rgbproc exch def\n");
>> 930 fprintf (fp, " { bwproc } image\n");
>> 931 fprintf (fp, " } def\n");
>> 932 fprintf (fp, "} if\n");
>> 933 fprintf (fp, "/picstr %d string def\n", width * components);
>> 934 fprintf (fp, "%d %d scale\n", width, height);
>> 935 fprintf (fp, "%d %d %d\n", width, height, 8);
>> 936 fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height);
>> 937 fprintf (fp, "{currentfile picstr readhexstring pop}\n");
>> 938 fprintf (fp, "false %d\n", components);
>> 939 fprintf (fp, "colorimage\n");
>> 940
>> 941 curpix = (GLubyte*) pixels;
>> 942 pos = 0;
>> 943 for (i = width*height*components; i>0; i--) {
>> 944 fprintf (fp, "%02hx ", *(curpix++));
>> 945 if (++pos >= 32) {
>> 946 fprintf (fp, "\n");
>> 947 pos = 0;
>> 948 }
>> 949 }
>> 950 if (pos)
>> 951 fprintf (fp, "\n");
>> 952
>> 953 fprintf (fp, "grestore\n");
>> 954 fprintf (fp, "showpage\n");
>> 955 delete pixels;
>> 956 fclose (fp);
>> 957 return 0;
>> 958 }
>> 959
>> 960 GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) {
>> 961
>> 962 GLubyte* buffer;
>> 963 GLint swapbytes, lsbfirst, rowlength;
>> 964 GLint skiprows, skippixels, alignment;
>> 965 GLenum format;
>> 966 int size;
>> 967
>> 968 if (inColor) {
>> 969 format = GL_RGB;
>> 970 size = width*height*3;
>> 971 } else {
>> 972 format = GL_LUMINANCE;
>> 973 size = width*height*1;
>> 974 }
>> 975
>> 976 buffer = new GLubyte[size];
>> 977 if (buffer == NULL)
>> 978 return NULL;
>> 979
>> 980 glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes);
>> 981 glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst);
>> 982 glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength);
>> 983
>> 984 glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows);
>> 985 glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels);
>> 986 glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment);
>> 987
>> 988 glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE);
>> 989 glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE);
>> 990 glPixelStorei (GL_UNPACK_ROW_LENGTH, 0);
>> 991
>> 992 glPixelStorei (GL_UNPACK_SKIP_ROWS, 0);
>> 993 glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0);
>> 994 glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
>> 995
>> 996 glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer);
>> 997
>> 998 glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes);
>> 999 glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst);
>> 1000 glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength);
>> 1001
>> 1002 glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows);
>> 1003 glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels);
>> 1004 glPixelStorei (GL_UNPACK_ALIGNMENT, alignment);
>> 1005
>> 1006 return buffer;
>> 1007 }
>> 1008
>> 1009 #endif
543 1010