1 |
greg |
1.1 |
#ifndef lint |
2 |
schorsch |
2.16 |
static const char RCSid[] = "$Id: oconv.c,v 2.15 2003/06/05 19:29:34 schorsch Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
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/* |
5 |
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* oconv.c - main program for object to octree conversion. |
6 |
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* |
7 |
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* 7/29/85 |
8 |
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*/ |
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10 |
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#include "standard.h" |
11 |
schorsch |
2.16 |
#include "platform.h" |
12 |
greg |
1.1 |
#include "octree.h" |
13 |
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#include "object.h" |
14 |
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#include "otypes.h" |
15 |
greg |
2.4 |
#include "paths.h" |
16 |
greg |
1.14 |
|
17 |
greg |
2.4 |
#define OMARGIN (10*FTINY) /* margin around global cube */ |
18 |
greg |
1.2 |
|
19 |
greg |
2.11 |
#define MAXOBJFIL 127 /* maximum number of scene files */ |
20 |
greg |
1.1 |
|
21 |
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char *progname; /* argv[0] */ |
22 |
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23 |
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int nowarn = 0; /* supress warnings? */ |
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|
25 |
greg |
2.14 |
int objlim = 6; /* # of objects before split */ |
26 |
greg |
1.1 |
|
27 |
greg |
2.14 |
int resolu = 16384; /* octree resolution limit */ |
28 |
greg |
1.1 |
|
29 |
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CUBE thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0}; /* our scene */ |
30 |
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31 |
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char *ofname[MAXOBJFIL+1]; /* object file names */ |
32 |
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int nfiles = 0; /* number of object files */ |
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|
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greg |
2.4 |
double mincusize; /* minimum cube size from resolu */ |
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greg |
1.1 |
|
36 |
greg |
2.12 |
void (*addobjnotify[])() = {NULL}; /* new object notifier functions */ |
37 |
greg |
1.7 |
|
38 |
greg |
1.1 |
|
39 |
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main(argc, argv) /* convert object files to an octree */ |
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int argc; |
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greg |
2.10 |
char *argv[]; |
42 |
greg |
1.1 |
{ |
43 |
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FVECT bbmin, bbmax; |
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char *infile = NULL; |
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greg |
2.6 |
int inpfrozen = 0; |
46 |
greg |
1.1 |
int outflags = IO_ALL; |
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greg |
2.4 |
OBJECT startobj; |
48 |
greg |
1.1 |
int i; |
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|
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greg |
2.5 |
progname = argv[0] = fixargv0(argv[0]); |
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greg |
1.1 |
|
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greg |
1.12 |
initotypes(); |
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|
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greg |
1.5 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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greg |
1.1 |
switch (argv[i][1]) { |
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greg |
1.5 |
case '\0': /* scene from stdin */ |
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goto breakopt; |
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greg |
1.1 |
case 'i': /* input octree */ |
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infile = argv[++i]; |
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break; |
61 |
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case 'b': /* bounding cube */ |
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greg |
1.2 |
thescene.cuorg[0] = atof(argv[++i]) - OMARGIN; |
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thescene.cuorg[1] = atof(argv[++i]) - OMARGIN; |
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thescene.cuorg[2] = atof(argv[++i]) - OMARGIN; |
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thescene.cusize = atof(argv[++i]) + 2*OMARGIN; |
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greg |
1.1 |
break; |
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case 'n': /* set limit */ |
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objlim = atoi(argv[++i]); |
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break; |
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case 'r': /* resolution limit */ |
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resolu = atoi(argv[++i]); |
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break; |
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case 'f': /* freeze octree */ |
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outflags &= ~IO_FILES; |
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break; |
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case 'w': /* supress warnings */ |
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nowarn = 1; |
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break; |
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default: |
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sprintf(errmsg, "unknown option: '%s'", argv[i]); |
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error(USER, errmsg); |
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break; |
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} |
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greg |
1.5 |
breakopt: |
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schorsch |
2.15 |
SET_FILE_BINARY(stdout); |
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greg |
1.1 |
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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greg |
2.6 |
if (nfiles == 0) |
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inpfrozen++; |
92 |
greg |
2.8 |
} else |
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newheader("RADIANCE", stdout); /* new binary file header */ |
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greg |
2.7 |
printargs(argc, argv, stdout); |
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greg |
1.13 |
fputformat(OCTFMT, stdout); |
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greg |
1.1 |
printf("\n"); |
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startobj = nobjects; /* previous objects already converted */ |
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greg |
2.5 |
|
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greg |
1.4 |
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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outflags &= ~IO_FILES; |
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} else { /* from file */ |
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if (nfiles >= MAXOBJFIL) |
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error(INTERNAL, "too many scene files"); |
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readobj(ofname[nfiles++] = argv[i]); |
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} |
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greg |
1.1 |
ofname[nfiles] = NULL; |
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greg |
2.6 |
|
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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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greg |
1.1 |
/* 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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for (i = startobj; i < nobjects; i++) |
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add2bbox(objptr(i), bbmin, bbmax); |
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/* set/check cube */ |
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if (thescene.cusize == 0.0) { |
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if (bbmin[0] <= bbmax[0]) { |
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for (i = 0; i < 3; i++) { |
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greg |
1.2 |
bbmin[i] -= OMARGIN; |
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bbmax[i] += OMARGIN; |
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greg |
1.1 |
} |
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for (i = 0; i < 3; i++) |
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if (bbmax[i] - bbmin[i] > thescene.cusize) |
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thescene.cusize = bbmax[i] - bbmin[i]; |
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greg |
1.3 |
for (i = 0; i < 3; i++) |
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thescene.cuorg[i] = |
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(bbmax[i]+bbmin[i]-thescene.cusize)*.5; |
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greg |
1.1 |
} |
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} else { |
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for (i = 0; i < 3; i++) |
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if (bbmin[i] < thescene.cuorg[i] || |
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bbmax[i] > thescene.cuorg[i] + thescene.cusize) |
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error(USER, "boundary does not encompass scene"); |
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} |
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mincusize = thescene.cusize / resolu - FTINY; |
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greg |
2.5 |
|
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greg |
1.1 |
for (i = startobj; i < nobjects; i++) /* add new objects */ |
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addobject(&thescene, i); |
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greg |
2.5 |
|
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greg |
1.1 |
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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} |
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greg |
2.12 |
void |
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greg |
1.1 |
quit(code) /* exit program */ |
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int code; |
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{ |
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exit(code); |
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} |
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greg |
2.12 |
void |
164 |
greg |
1.1 |
cputs() /* interactive error */ |
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{ |
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/* referenced, but not used */ |
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} |
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greg |
2.12 |
void |
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greg |
1.1 |
wputs(s) /* warning message */ |
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char *s; |
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{ |
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if (!nowarn) |
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eputs(s); |
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} |
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greg |
2.12 |
void |
180 |
greg |
1.1 |
eputs(s) /* put string to stderr */ |
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register char *s; |
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{ |
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greg |
1.9 |
static int inln = 0; |
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greg |
1.1 |
|
185 |
greg |
1.9 |
if (!inln++) { |
186 |
greg |
1.1 |
fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
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fputs(s, stderr); |
190 |
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if (*s && s[strlen(s)-1] == '\n') |
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greg |
1.9 |
inln = 0; |
192 |
greg |
1.1 |
} |
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greg |
2.4 |
#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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greg |
1.11 |
|
201 |
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202 |
greg |
1.1 |
addobject(cu, obj) /* add an object to a cube */ |
203 |
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register CUBE *cu; |
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greg |
2.4 |
OBJECT obj; |
205 |
greg |
1.1 |
{ |
206 |
greg |
2.13 |
int inc; |
207 |
greg |
1.1 |
|
208 |
greg |
2.13 |
inc = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu); |
209 |
greg |
1.1 |
|
210 |
greg |
2.13 |
if (inc == O_MISS) |
211 |
greg |
1.1 |
return; /* no intersection */ |
212 |
greg |
2.5 |
|
213 |
greg |
1.1 |
if (istree(cu->cutree)) { |
214 |
greg |
2.13 |
CUBE cukid; /* do children */ |
215 |
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int i, j; |
216 |
greg |
1.1 |
cukid.cusize = cu->cusize * 0.5; |
217 |
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for (i = 0; i < 8; i++) { |
218 |
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cukid.cutree = octkid(cu->cutree, i); |
219 |
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for (j = 0; j < 3; j++) { |
220 |
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cukid.cuorg[j] = cu->cuorg[j]; |
221 |
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if ((1<<j) & i) |
222 |
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cukid.cuorg[j] += cukid.cusize; |
223 |
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} |
224 |
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addobject(&cukid, obj); |
225 |
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octkid(cu->cutree, i) = cukid.cutree; |
226 |
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} |
227 |
greg |
1.11 |
return; |
228 |
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} |
229 |
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if (isempty(cu->cutree)) { |
230 |
greg |
2.13 |
OBJECT oset[2]; /* singular set */ |
231 |
greg |
1.1 |
oset[0] = 1; oset[1] = obj; |
232 |
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cu->cutree = fullnode(oset); |
233 |
greg |
1.11 |
return; |
234 |
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} |
235 |
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/* add to full node */ |
236 |
greg |
2.13 |
add2full(cu, obj, inc); |
237 |
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} |
238 |
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239 |
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240 |
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add2full(cu, obj, inc) /* add object to full node */ |
241 |
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register CUBE *cu; |
242 |
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OBJECT obj; |
243 |
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int inc; |
244 |
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{ |
245 |
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OCTREE ot; |
246 |
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OBJECT oset[MAXSET+1]; |
247 |
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CUBE cukid; |
248 |
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unsigned char inflg[(MAXSET+7)/8], volflg[(MAXSET+7)/8]; |
249 |
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register int i, j; |
250 |
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251 |
greg |
1.11 |
objset(oset, cu->cutree); |
252 |
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cukid.cusize = cu->cusize * 0.5; |
253 |
greg |
2.5 |
|
254 |
greg |
2.13 |
if (inc==O_IN || oset[0] < objlim || cukid.cusize < mincusize) { |
255 |
greg |
1.11 |
/* add to set */ |
256 |
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if (oset[0] >= MAXSET) { |
257 |
greg |
2.3 |
sprintf(errmsg, "set overflow in addobject (%s)", |
258 |
greg |
1.11 |
objptr(obj)->oname); |
259 |
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error(INTERNAL, errmsg); |
260 |
greg |
1.1 |
} |
261 |
greg |
1.11 |
insertelem(oset, obj); |
262 |
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cu->cutree = fullnode(oset); |
263 |
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return; |
264 |
greg |
1.1 |
} |
265 |
greg |
1.11 |
/* subdivide cube */ |
266 |
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if ((ot = octalloc()) == EMPTY) |
267 |
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error(SYSTEM, "out of octree space"); |
268 |
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/* mark volumes */ |
269 |
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j = (oset[0]+7)>>3; |
270 |
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while (j--) |
271 |
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volflg[j] = inflg[j] = 0; |
272 |
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for (j = 1; j <= oset[0]; j++) |
273 |
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if (isvolume(objptr(oset[j])->otype)) { |
274 |
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setbit(volflg,j-1); |
275 |
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if ((*ofun[objptr(oset[j])->otype].funp) |
276 |
greg |
2.3 |
(objptr(oset[j]), cu) == O_IN) |
277 |
greg |
1.11 |
setbit(inflg,j-1); |
278 |
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} |
279 |
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/* assign subcubes */ |
280 |
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for (i = 0; i < 8; i++) { |
281 |
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cukid.cutree = EMPTY; |
282 |
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for (j = 0; j < 3; j++) { |
283 |
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cukid.cuorg[j] = cu->cuorg[j]; |
284 |
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if ((1<<j) & i) |
285 |
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cukid.cuorg[j] += cukid.cusize; |
286 |
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} |
287 |
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/* surfaces first */ |
288 |
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for (j = 1; j <= oset[0]; j++) |
289 |
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if (!tstbit(volflg,j-1)) |
290 |
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addobject(&cukid, oset[j]); |
291 |
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/* then this object */ |
292 |
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addobject(&cukid, obj); |
293 |
greg |
2.3 |
/* then partial volumes */ |
294 |
greg |
1.11 |
for (j = 1; j <= oset[0]; j++) |
295 |
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if (tstbit(volflg,j-1) && |
296 |
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!tstbit(inflg,j-1)) |
297 |
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addobject(&cukid, oset[j]); |
298 |
greg |
2.3 |
/* full volumes last */ |
299 |
greg |
1.11 |
for (j = 1; j <= oset[0]; j++) |
300 |
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if (tstbit(inflg,j-1)) |
301 |
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addobject(&cukid, oset[j]); |
302 |
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/* returned node */ |
303 |
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octkid(ot, i) = cukid.cutree; |
304 |
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} |
305 |
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cu->cutree = ot; |
306 |
greg |
1.1 |
} |