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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Program to display Radiance scene using OpenGL. |
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*/ |
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#include "radogl.h" |
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#include "view.h" |
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#include "paths.h" |
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#include <sys/types.h> |
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#include <GL/glx.h> |
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#ifndef NOSTEREO |
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#include <X11/extensions/SGIStereo.h> |
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#endif |
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#include <ctype.h> |
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#include <time.h> |
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#include "radogl.h" |
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#include "view.h" |
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#include "paths.h" |
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#include "glradicon.h" |
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#include "rtprocess.h" |
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#ifndef MAXVIEW |
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#define MAXVIEW 63 /* maximum number of standard views */ |
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int nscenef = 0; /* number of scene files */ |
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char *octree; /* octree name (NULL if unnec.) */ |
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int rtpd[3]; /* rtrace process descriptors */ |
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SUBPROC rtpd; /* rtrace process descriptors */ |
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int silent = 0; /* run rad silently? */ |
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int backvis = 1; /* back faces visible? */ |
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int no_render = 0; /* don't rerender */ |
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#ifdef BSD |
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#define strchr index |
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#endif |
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extern char *strchr(), *fgets(), *fgetline(), *atos(), *scan4var(); |
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extern char *fgetline(), *atos(), *scan4var(); |
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extern int nowarn; /* turn warnings off? */ |
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extern time_t time(); |
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main(argc, argv) |
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dev_open(radfile = argv[i]); |
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/* load octree or scene files */ |
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if (octree != NULL) { |
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displist = rgl_octlist(octree, NULL, NULL); |
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displist = rgl_octlist(octree, NULL, NULL, NULL); |
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startrtrace(octree); |
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} else |
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displist = rgl_filelist(nscenef, scene); |
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displist = rgl_filelist(nscenef, scene, NULL); |
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/* set initial view */ |
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dev_view(currentview < 0 ? &thisview : vwl[currentview].v); |
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/* input/render loop */ |
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/* all done */ |
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quit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-w][-b][-v view] rfile [VAR=value]..\n", |
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fprintf(stderr, |
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"Usage: %s [-w][-s][-b][-S][-v view] rfile [VAR=value]..\n", |
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argv[0]); |
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quit(1); |
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} |
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void |
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quit(code) /* exit gracefully */ |
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int code; |
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{ |
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if (ourdisplay != NULL) |
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dev_close(); |
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if (rtpd[2] > 0) { |
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if (close_process(rtpd) > 0) |
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/* if (rtpd.pid > 0) { */ |
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if (rtpd.running) { |
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if (close_process(&rtpd) > 0) |
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wputs("bad exit status from rtrace\n"); |
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rtpd[2] = 0; |
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/* rtpd.pid = 0; */ |
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} |
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exit(code); |
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} |
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if (nowarn) av[ac++] = "-w-"; |
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av[ac++] = octname; |
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av[ac] = NULL; |
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if (open_process(rtpd, av) <= 0) |
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if (open_process(&rtpd, av) <= 0) |
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error(SYSTEM, "cannot start rtrace process"); |
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} |
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atof(sskip2(buf+4,1)), |
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atof(sskip2(buf+4,2))); |
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else if (backvis && !strncmp(buf, "-bv", 3) && |
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(!buf[3] || strchr(" 0-FfNn", buf[3]) != NULL)) |
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(!buf[3] || strchr("0-FfNn \n",buf[3])!=NULL)) |
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backvis = 0; |
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fclose(fp); |
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unlink(optfile); /* delete options file */ |
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glDepthFunc(GL_LESS); |
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glShadeModel(GL_SMOOTH); |
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
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glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); |
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glEnable(GL_LIGHTING); |
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glFrontFace(GL_CCW); |
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glCullFace(GL_BACK); |
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if (backvis) |
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glDisable(GL_CULL_FACE); |
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else { |
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glFrontFace(GL_CCW); |
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glCullFace(GL_BACK); |
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else |
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glEnable(GL_CULL_FACE); |
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} |
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glDrawBuffer(GL_BACK); |
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/* figure out sensible view */ |
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pwidth = (double)DisplayWidthMM(ourdisplay, ourscreen) / |
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} |
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static |
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waitabit() /* pause a moment */ |
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{ |
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struct timespec ts; |
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ts.tv_sec = 0; |
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ts.tv_nsec = 5000000; |
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nanosleep(&ts, NULL); |
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} |
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getmove(ebut) /* get view change */ |
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XButtonPressedEvent *ebut; |
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{ |
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while (!XCheckMaskEvent(ourdisplay, |
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ButtonReleaseMask, levptr(XEvent))) { |
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/* pause so as not to move too fast */ |
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waitabit(); |
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if (!XQueryPointer(ourdisplay, gwind, &rootw, &childw, |
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&rootx, &rooty, &wx, &wy, &statemask)) |
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{ |
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float fbuf[6]; |
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/* check to see if rtrace is running */ |
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if (rtpd[2] <= 0) |
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/* if (rtpd.pid <= 0) */ |
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if (!rtpd.running) |
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return(0); |
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/* assign origin */ |
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fbuf[0] = org[0]; fbuf[1] = org[1]; fbuf[2] = org[2]; |
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if (md <= FTINY) md = FHUGE; |
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fbuf[3] = dir[0]*md; fbuf[4] = dir[1]*md; fbuf[5] = dir[2]*md; |
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/* trace that ray */ |
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if (process(rtpd, fbuf, fbuf, 4*sizeof(float), 6*sizeof(float)) != |
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4*sizeof(float)) |
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if (process(&rtpd, (char *)fbuf, (char *)fbuf, |
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4*sizeof(float), 6*sizeof(float)) != 4*sizeof(float)) |
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error(INTERNAL, "error getting data back from rtrace process"); |
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if (fbuf[3] >= .99*FHUGE) |
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return(0); /* missed local objects */ |
