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/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* oconv.c - main program for object to octree conversion. |
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* |
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* 7/29/85 |
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*/ |
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#include "platform.h" |
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#include "standard.h" |
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#include "octree.h" |
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#include "object.h" |
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#include "otypes.h" |
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#include "resolu.h" |
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#include "oconv.h" |
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|
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#define OMARGIN (10*FTINY) /* margin around global cube */ |
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#define OMARGIN (10*FTINY) /* margin around global cube */ |
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|
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#define MAXOBJFIL 63 /* maximum number of scene files */ |
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#define MAXOBJFIL 255 /* maximum number of scene files */ |
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char *progname; /* argv[0] */ |
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char *libpath; /* library search path */ |
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int nowarn = 0; /* supress warnings? */ |
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int objlim = 5; /* # of objects before split */ |
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int objlim = 6; /* # of objects before split */ |
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int resolu = 1024; /* octree resolution limit */ |
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int resolu = 16384; /* octree resolution limit */ |
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CUBE thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0}; /* our scene */ |
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CUBE thescene = {{0.0, 0.0, 0.0}, 0.0, EMPTY}; /* our scene */ |
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char *ofname[MAXOBJFIL+1]; /* object file names */ |
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int nfiles = 0; /* number of object files */ |
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double mincusize; /* minimum cube size from resolu */ |
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double mincusize; /* minimum cube size from resolu */ |
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void (*addobjnotify[])() = {NULL}; /* new object notifier functions */ |
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main(argc, argv) /* convert object files to an octree */ |
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int argc; |
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char **argv; |
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static void addobject(CUBE *cu, OBJECT obj); |
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static void add2full(CUBE *cu, OBJECT obj, int inc); |
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|
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int |
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main( /* convert object files to an octree */ |
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int argc, |
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char *argv[] |
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) |
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{ |
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char *getenv(); |
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double atof(); |
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FVECT bbmin, bbmax; |
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char *infile = NULL; |
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int inpfrozen = 0; |
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int outflags = IO_ALL; |
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OBJECT startobj; |
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OBJECT startobj; |
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int i; |
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progname = argv[0]; |
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fixargv0(argv[0]); /* sets global progname */ |
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|
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if ((libpath = getenv("RAYPATH")) == NULL) |
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libpath = ":/usr/local/lib/ray"; |
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ot_initotypes(); |
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for (i = 1; i < argc && argv[i][0] == '-' && argv[i][1]; i++) |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case '\0': /* scene from stdin */ |
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goto breakopt; |
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case 'i': /* input octree */ |
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infile = argv[++i]; |
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break; |
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error(USER, errmsg); |
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break; |
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} |
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breakopt: |
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SET_FILE_BINARY(stdout); |
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if (infile != NULL) { /* get old octree & objects */ |
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if (thescene.cusize > FTINY) |
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error(USER, "only one of '-b' or '-i'"); |
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nfiles = readoct(infile, IO_ALL, &thescene, ofname); |
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if (nfiles == 0 && outflags & IO_FILES) { |
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error(WARNING, "frozen octree"); |
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outflags &= ~IO_FILES; |
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} |
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} |
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printargs(argc, argv, stdout); /* info. header */ |
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if (nfiles == 0) |
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inpfrozen++; |
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} else |
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newheader("RADIANCE", stdout); /* new binary file header */ |
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printargs(argc, argv, stdout); |
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fputformat(OCTFMT, stdout); |
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printf("\n"); |
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startobj = nobjects; /* previous objects already converted */ |
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for ( ; i < argc; i++) /* read new scene descriptions */ |
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if (!strcmp(argv[i], "-")) { /* from stdin */ |
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readobj(NULL); |
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} |
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ofname[nfiles] = NULL; |
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if (inpfrozen && outflags & IO_FILES) { |
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error(WARNING, "frozen octree"); |
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outflags &= ~IO_FILES; |
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} |
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/* find bounding box */ |
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bbmin[0] = bbmin[1] = bbmin[2] = FHUGE; |
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bbmax[0] = bbmax[1] = bbmax[2] = -FHUGE; |
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} |
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mincusize = thescene.cusize / resolu - FTINY; |
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for (i = startobj; i < nobjects; i++) /* add new objects */ |
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addobject(&thescene, i); |
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thescene.cutree = combine(thescene.cutree); /* optimize */ |
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writeoct(outflags, &thescene, ofname); /* write structures to stdout */ |
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quit(0); |
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return 0; /* pro forma return */ |
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} |
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quit(code) /* exit program */ |
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int code; |
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void |
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quit( /* exit program */ |
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int code |
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) |
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{ |
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exit(code); |
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} |
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cputs() /* interactive error */ |
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void |
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cputs(void) /* interactive error */ |
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{ |
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/* referenced, but not used */ |
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} |
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wputs(s) /* warning message */ |
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char *s; |
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void |
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wputs( /* warning message */ |
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const char *s |
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) |
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{ |
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if (!nowarn) |
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eputs(s); |
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} |
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eputs(s) /* put string to stderr */ |
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register char *s; |
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void |
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eputs( /* put string to stderr */ |
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const char *s |
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) |
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{ |
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static int inline = 0; |
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static int inln = 0; |
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if (!inline++) { |
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if (!inln++) { |
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fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
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fputs(s, stderr); |
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if (*s && s[strlen(s)-1] == '\n') |
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inline = 0; |
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inln = 0; |
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} |
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/* conflicting def's in param.h */ |
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#undef tstbit |
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#undef setbit |
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#undef clrbit |
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#undef tglbit |
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addobject(cu, obj) /* add an object to a cube */ |
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register CUBE *cu; |
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OBJECT obj; |
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#define bitop(f,i,op) (f[((i)>>3)] op (1<<((i)&7))) |
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#define tstbit(f,i) bitop(f,i,&) |
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#define setbit(f,i) bitop(f,i,|=) |
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#define clrbit(f,i) bitop(f,i,&=~) |
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#define tglbit(f,i) bitop(f,i,^=) |
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|
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|
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static void |
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addobject( /* add an object to a cube */ |
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CUBE *cu, |
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OBJECT obj |
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) |
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{ |
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CUBE cukid; |
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OCTREE ot; |
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OBJECT oset[MAXSET+1]; |
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int in; |
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register int i, j; |
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int inc; |
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in = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu); |
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inc = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu); |
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if (!in) |
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if (inc == O_MISS) |
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return; /* no intersection */ |
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> |
|
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if (istree(cu->cutree)) { |
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/* do children */ |
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CUBE cukid; /* do children */ |
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int i, j; |
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cukid.cusize = cu->cusize * 0.5; |
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for (i = 0; i < 8; i++) { |
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cukid.cutree = octkid(cu->cutree, i); |
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addobject(&cukid, obj); |
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octkid(cu->cutree, i) = cukid.cutree; |
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} |
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< |
|
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< |
} else if (isempty(cu->cutree)) { |
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/* singular set */ |
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> |
return; |
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> |
} |
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> |
if (isempty(cu->cutree)) { |
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> |
OBJECT oset[2]; /* singular set */ |
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oset[0] = 1; oset[1] = obj; |
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cu->cutree = fullnode(oset); |
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< |
|
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< |
} else { |
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< |
/* add to full node */ |
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< |
objset(oset, cu->cutree); |
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< |
cukid.cusize = cu->cusize * 0.5; |
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< |
|
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< |
if (in == 2 || oset[0] < objlim || cukid.cusize < mincusize) { |
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< |
/* add to set */ |
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< |
if (oset[0] >= MAXSET) { |
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< |
sprintf(errmsg, |
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< |
"set overflow in addobject (%s)", |
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< |
objptr(obj)->oname); |
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< |
error(INTERNAL, errmsg); |
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< |
} |
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< |
insertelem(oset, obj); |
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< |
cu->cutree = fullnode(oset); |
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> |
return; |
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> |
} |
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> |
/* add to full node */ |
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> |
add2full(cu, obj, inc); |
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> |
} |
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|
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< |
} else { |
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< |
/* subdivide cube */ |
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< |
if ((ot = octalloc()) == EMPTY) |
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< |
error(SYSTEM, "out of octree space"); |
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< |
for (i = 0; i < 8; i++) { |
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< |
cukid.cutree = EMPTY; |
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< |
for (j = 0; j < 3; j++) { |
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< |
cukid.cuorg[j] = cu->cuorg[j]; |
| 262 |
< |
if ((1<<j) & i) |
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< |
cukid.cuorg[j] += cukid.cusize; |
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< |
} |
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< |
for (j = 1; j <= oset[0]; j++) |
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< |
addobject(&cukid, oset[j]); |
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< |
addobject(&cukid, obj); |
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< |
octkid(ot, i) = cukid.cutree; |
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< |
} |
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< |
cu->cutree = ot; |
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> |
|
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> |
static void |
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> |
add2full( /* add object to full node */ |
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> |
CUBE *cu, |
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> |
OBJECT obj, |
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> |
int inc |
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> |
) |
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> |
{ |
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> |
OCTREE ot; |
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> |
OBJECT oset[MAXSET+1]; |
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> |
CUBE cukid; |
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> |
unsigned char inflg[(MAXSET+7)/8], volflg[(MAXSET+7)/8]; |
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> |
int i, j; |
| 267 |
> |
|
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> |
objset(oset, cu->cutree); |
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> |
cukid.cusize = cu->cusize * 0.5; |
| 270 |
> |
|
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> |
if (inc==O_IN || oset[0] < objlim || cukid.cusize < |
| 272 |
> |
(oset[0] < MAXSET ? mincusize : mincusize/256.0)) { |
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> |
/* add to set */ |
| 274 |
> |
if (oset[0] >= MAXSET) { |
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> |
sprintf(errmsg, "set overflow in addobject (%s)", |
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> |
objptr(obj)->oname); |
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> |
error(INTERNAL, errmsg); |
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} |
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+ |
insertelem(oset, obj); |
| 280 |
+ |
cu->cutree = fullnode(oset); |
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+ |
return; |
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} |
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+ |
/* subdivide cube */ |
| 284 |
+ |
if ((ot = octalloc()) == EMPTY) |
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error(SYSTEM, "out of octree space"); |
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+ |
/* mark volumes */ |
| 287 |
+ |
j = (oset[0]+7)>>3; |
| 288 |
+ |
while (j--) |
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+ |
volflg[j] = inflg[j] = 0; |
| 290 |
+ |
for (j = 1; j <= oset[0]; j++) |
| 291 |
+ |
if (isvolume(objptr(oset[j])->otype)) { |
| 292 |
+ |
setbit(volflg,j-1); |
| 293 |
+ |
if ((*ofun[objptr(oset[j])->otype].funp) |
| 294 |
+ |
(objptr(oset[j]), cu) == O_IN) |
| 295 |
+ |
setbit(inflg,j-1); |
| 296 |
+ |
} |
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+ |
/* assign subcubes */ |
| 298 |
+ |
for (i = 0; i < 8; i++) { |
| 299 |
+ |
cukid.cutree = EMPTY; |
| 300 |
+ |
for (j = 0; j < 3; j++) { |
| 301 |
+ |
cukid.cuorg[j] = cu->cuorg[j]; |
| 302 |
+ |
if ((1<<j) & i) |
| 303 |
+ |
cukid.cuorg[j] += cukid.cusize; |
| 304 |
+ |
} |
| 305 |
+ |
/* surfaces first */ |
| 306 |
+ |
for (j = 1; j <= oset[0]; j++) |
| 307 |
+ |
if (!tstbit(volflg,j-1)) |
| 308 |
+ |
addobject(&cukid, oset[j]); |
| 309 |
+ |
/* then this object */ |
| 310 |
+ |
addobject(&cukid, obj); |
| 311 |
+ |
/* then partial volumes */ |
| 312 |
+ |
for (j = 1; j <= oset[0]; j++) |
| 313 |
+ |
if (tstbit(volflg,j-1) && |
| 314 |
+ |
!tstbit(inflg,j-1)) |
| 315 |
+ |
addobject(&cukid, oset[j]); |
| 316 |
+ |
/* full volumes last */ |
| 317 |
+ |
for (j = 1; j <= oset[0]; j++) |
| 318 |
+ |
if (tstbit(inflg,j-1)) |
| 319 |
+ |
addobject(&cukid, oset[j]); |
| 320 |
+ |
/* returned node */ |
| 321 |
+ |
octkid(ot, i) = cukid.cutree; |
| 322 |
+ |
} |
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+ |
cu->cutree = ot; |
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} |
