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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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* Routines for loading and displaying Radiance objects under OpenGL in rholo. |
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* Routines for loading and displaying Radiance objects in rholo with GLX. |
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*/ |
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#include "radogl.h" |
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#define AVGREFL 0.5 /* assumed average reflectance */ |
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#define MAXAC 64 /* maximum number of args */ |
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#define MAXAC 512 /* maximum number of args */ |
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#ifndef MINTHRESH |
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#define MINTHRESH 5.0 /* source threshold w.r.t. mean */ |
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FVECT center; /* orig. object center */ |
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FLOAT radius; /* orig. object radius */ |
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int listid; /* GL display list identifier */ |
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int nlists; /* number of lists allocated */ |
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int rtp[3]; /* associated rtrace process */ |
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DLIGHTS *ol; /* object lights */ |
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FULLXF xfb; /* coordinate transform */ |
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} |
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dobjects = ohead.next; |
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if (!foundlink) { |
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glDeleteLists(op->listid, 1); |
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glDeleteLists(op->listid, op->nlists); |
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close_process(op->rtp); |
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} |
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while (op->xfac) |
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freestr(op->xfav[--op->xfac]); |
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free((char *)op); |
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free((void *)op); |
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return(1); |
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} |
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/* avg. reflected brightness */ |
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d = AVGREFL / (double)ncells; |
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scalecolor(csum, d); |
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if (tmCvColors(&dlightsets->larb, TM_NOCHROM, csum, 1) != TM_E_OK) |
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if (tmCvColors(&dlightsets->larb, TM_NOCHROM, &csum, 1) != TM_E_OK) |
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error(CONSISTENCY, "tone mapping problem in ssph_compute"); |
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/* greedy light source clustering */ |
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while (dlightsets->nl < MAXLIGHTS) { |
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continue; /* too dim */ |
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ssph_direc(v, alt, azi); /* else add it in */ |
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VSUM(ls->direc, ls->direc, v, d); |
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ls->omega++; |
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ls->omega += 1.; |
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addcolor(ls->val, ssamp[alt][azi].val); |
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/* remove from list */ |
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setcolor(ssamp[alt][azi].val, 0., 0., 0.); |
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ssamp[alt][azi].nsamp = 0; |
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} |
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d = 1./ls->omega; /* avg. brightness */ |
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scalecolor(ls->val, d); |
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quit(0); |
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if (!ssph_compute()) { /* compute light sources from sphere */ |
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dlightsets = dl->next; |
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free((char *)dl); |
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free((void *)dl); |
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return(0); |
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} |
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op->ol = dl; |
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} |
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static int |
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static |
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cmderror(cn, err) /* report command error */ |
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int cn; |
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char *err; |
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{ |
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sprintf(errmsg, "%s: %s", rhdcmd[cn], err); |
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error(COMMAND, errmsg); |
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return(cn); |
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} |
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char *cmd; |
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register char *args; |
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{ |
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int somechange = 0; |
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int cn, na, doxfm; |
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register int nn; |
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char *alist[MAXAC+1], *nm; |
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dobj_load(alist[0], alist[0]); |
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else if (na == 2) |
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dobj_load(alist[0], alist[1]); |
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else |
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return(cmderror(cn, "need octree [name]")); |
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else { |
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cmderror(cn, "need octree [name]"); |
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return(0); |
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} |
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break; |
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case DO_UNLOAD: /* unload an object */ |
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case DO_UNLOAD: /* clear an object */ |
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if (na > 1) goto toomany; |
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if (na && alist[0][0] == '*') |
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dobj_cleanup(); |
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somechange += dobj_cleanup(); |
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else |
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dobj_unload(na ? alist[0] : curname); |
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somechange += dobj_unload(na ? alist[0] : curname); |
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break; |
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case DO_XFORM: /* transform object */ |
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case DO_MOVE: |
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} else { |
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nm = curname; nn = 0; |
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} |
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if (cn == DO_MOVE && nn >= na) |
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return(cmderror(cn, "missing transform")); |
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dobj_xform(nm, cn==DO_MOVE, na-nn, alist+nn); |
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if (cn == DO_MOVE && nn >= na) { |
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cmderror(cn, "missing transform"); |
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return(0); |
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} |
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somechange += dobj_xform(nm, cn==DO_MOVE, na-nn, alist+nn); |
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break; |
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case DO_UNMOVE: /* undo last transform */ |
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dobj_unmove(); |
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somechange += dobj_unmove(); |
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break; |
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case DO_OBJECT: /* print object statistics */ |
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if (dobj_putstats(na ? alist[0] : curname, sstdout)) |
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if (na && alist[0][0] != '*' && |
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strcmp(alist[0], curname)) |
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if (na && alist[0][0] != '*' && (curobj == NULL || |
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strcmp(alist[0], curobj->name))) |
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savedxf(curobj = getdobj(alist[0])); |
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break; |
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case DO_DUP: /* duplicate object */ |
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break; |
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switch (nn) { |
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case 0: |
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return(cmderror(cn, "need new object name")); |
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cmderror(cn, "need new object name"); |
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return(0); |
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case 1: |
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nm = curname; |
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break; |
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if (!dobj_dup(nm, alist[nn-1])) |
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break; |
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if (na > nn) |
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dobj_xform(curname, 1, na-nn, alist+nn); |
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somechange += dobj_xform(curname, 1, na-nn, alist+nn); |
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else |
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curobj->drawcode = DO_HIDE; |
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savedxf(curobj); |
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case DO_HIDE: |
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if (na > 1) goto toomany; |
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dobj_lighting(na ? alist[0] : curname, cn); |
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somechange++; |
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break; |
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default: |
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error(CONSISTENCY, "bad command id in dobj_command"); |
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} |
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dev_view(&odev.v); /* redraw */ |
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return(cn); |
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return(somechange); |
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toomany: |
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return(cmderror(cn, "too many arguments")); |
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} |
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return(0); |
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} |
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if (getdobj(nam) != NULL) { |
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error(COMMAND, "name already taken (unload first)"); |
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error(COMMAND, "name already taken (clear first)"); |
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return(0); |
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} |
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/* get octree path */ |
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op->xfav[op->xfac=0] = NULL; |
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/* load octree into display list */ |
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dolights = 0; |
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op->listid = rgl_octlist(fpath, op->center, &op->radius); |
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domats = 1; |
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op->listid = rgl_octlist(fpath, op->center, &op->radius, &op->nlists); |
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/* start rtrace */ |
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rtargv[RTARGC-1] = fpath; |
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rtargv[RTARGC] = NULL; |
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savedxf(curobj = NULL); |
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while ((lp = dlightsets) != NULL) { |
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dlightsets = lp->next; |
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free((char *)lp); |
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free((void *)lp); |
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} |
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return(1); |
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} |
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dobj_xform(nam, add, ac, av) /* set/add transform for nam */ |
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dobj_xform(nam, rel, ac, av) /* set/add transform for nam */ |
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char *nam; |
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int add, ac; |
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int rel, ac; |
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char **av; |
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{ |
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register DOBJECT *op; |
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FVECT cent; |
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double rad; |
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char scoord[16]; |
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int i; |
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if ((op = getdobj(nam)) == NULL) { |
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error(COMMAND, "no object"); |
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return(0); |
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} |
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if (add) add = op->xfac; |
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if (ac + add > MAXAC) { |
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if (rel) |
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rel = op->xfac + 8; |
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if (ac + rel > MAXAC) { |
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error(COMMAND, "too many transform arguments"); |
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return(0); |
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} |
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savedxf(curobj = op); |
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if (!add) |
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savedxf(curobj = op); /* remember current transform */ |
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if (rel && ac == 4 && !strcmp(av[0], "-t")) |
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rel = -1; /* don't move for translate */ |
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else { |
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getdcent(cent, op); /* don't move if near orig. */ |
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rad = getdrad(op); |
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if (DOT(cent,cent) < rad*rad) |
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rel = -1; |
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} |
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if (!rel) { /* remove old transform */ |
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while (op->xfac) |
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freestr(op->xfav[--op->xfac]); |
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} else if (rel > 0) { /* relative move */ |
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op->xfav[op->xfac++] = savestr("-t"); |
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for (i = 0; i < 3; i++) { |
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sprintf(scoord, "%.4e", -cent[i]); |
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op->xfav[op->xfac++] = savestr(scoord); |
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} |
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} |
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while (ac--) |
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op->xfav[op->xfac++] = savestr(*av++); |
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if (rel > 0) { /* move back */ |
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op->xfav[op->xfac++] = savestr("-t"); |
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for (i = 0; i < 3; i++) { |
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sprintf(scoord, "%.4e", cent[i]); |
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op->xfav[op->xfac++] = savestr(scoord); |
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} |
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} |
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op->xfav[op->xfac] = NULL; |
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if (fullxf(&op->xfb, op->xfac, op->xfav) != op->xfac) { |
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error(COMMAND, "bad transform arguments"); |
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return(0); |
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} |
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getdcent(ocent, op); |
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fprintf(fp, "%s: %s, center [%f %f %f], radius %f", op->name, |
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fprintf(fp, "%s: %s, center [%g %g %g], radius %g", op->name, |
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op->drawcode==DO_HIDE ? "hidden" : |
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op->drawcode==DO_LIGHT && op->ol!=NULL ? "lighted" : |
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"shown", |
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return(0); |
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} |
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if (getdobj(nam) != NULL) { |
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error(COMMAND, "name already taken (unload first)"); |
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error(COMMAND, "name already taken (clear first)"); |
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return(0); |
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} |
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/* allocate and copy struct */ |
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VCOPY(darr, rorg); VCOPY(darr+3, rdir); |
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} |
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/* trace it */ |
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if (process(op->rtp, darr, darr, sizeof(double), |
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if (process(op->rtp, (char *)darr, (char *)darr, sizeof(double), |
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6*sizeof(double)) != sizeof(double)) |
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error(SYSTEM, "rtrace communication error"); |
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/* return distance */ |
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} |
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int |
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dobj_render() /* render our objects in OpenGL */ |
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{ |
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int nrendered = 0; |
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GLboolean normalizing; |
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GLfloat vec[4]; |
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FVECT v1; |
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if (op->drawcode != DO_HIDE) |
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break; |
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if (op == NULL) |
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return(1); |
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return(0); |
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/* set up general rendering params */ |
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glGetBooleanv(GL_NORMALIZE, &normalizing); |
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glPushAttrib(GL_LIGHTING_BIT|GL_TRANSFORM_BIT|GL_ENABLE_BIT| |
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} |
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/* render the display list */ |
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glCallList(op->listid); |
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nrendered++; |
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/* restore matrix */ |
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if (op->xfac) { |
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glMatrixMode(GL_MODELVIEW); |
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} |
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glPopAttrib(); /* restore rendering params */ |
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rgl_checkerr("rendering objects in dobj_render"); |
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return(1); |
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return(nrendered); |
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} |