| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id$";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* readoct.c - routines to read octree information.
|
| 6 |
*/
|
| 7 |
|
| 8 |
/* ====================================================================
|
| 9 |
* The Radiance Software License, Version 1.0
|
| 10 |
*
|
| 11 |
* Copyright (c) 1990 - 2002 The Regents of the University of California,
|
| 12 |
* through Lawrence Berkeley National Laboratory. All rights reserved.
|
| 13 |
*
|
| 14 |
* Redistribution and use in source and binary forms, with or without
|
| 15 |
* modification, are permitted provided that the following conditions
|
| 16 |
* are met:
|
| 17 |
*
|
| 18 |
* 1. Redistributions of source code must retain the above copyright
|
| 19 |
* notice, this list of conditions and the following disclaimer.
|
| 20 |
*
|
| 21 |
* 2. Redistributions in binary form must reproduce the above copyright
|
| 22 |
* notice, this list of conditions and the following disclaimer in
|
| 23 |
* the documentation and/or other materials provided with the
|
| 24 |
* distribution.
|
| 25 |
*
|
| 26 |
* 3. The end-user documentation included with the redistribution,
|
| 27 |
* if any, must include the following acknowledgment:
|
| 28 |
* "This product includes Radiance software
|
| 29 |
* (http://radsite.lbl.gov/)
|
| 30 |
* developed by the Lawrence Berkeley National Laboratory
|
| 31 |
* (http://www.lbl.gov/)."
|
| 32 |
* Alternately, this acknowledgment may appear in the software itself,
|
| 33 |
* if and wherever such third-party acknowledgments normally appear.
|
| 34 |
*
|
| 35 |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
|
| 36 |
* and "The Regents of the University of California" must
|
| 37 |
* not be used to endorse or promote products derived from this
|
| 38 |
* software without prior written permission. For written
|
| 39 |
* permission, please contact [email protected].
|
| 40 |
*
|
| 41 |
* 5. Products derived from this software may not be called "Radiance",
|
| 42 |
* nor may "Radiance" appear in their name, without prior written
|
| 43 |
* permission of Lawrence Berkeley National Laboratory.
|
| 44 |
*
|
| 45 |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
| 46 |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
| 47 |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
| 48 |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
|
| 49 |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| 50 |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| 51 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
| 52 |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
| 53 |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
| 54 |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
| 55 |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 56 |
* SUCH DAMAGE.
|
| 57 |
* ====================================================================
|
| 58 |
*
|
| 59 |
* This software consists of voluntary contributions made by many
|
| 60 |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more
|
| 61 |
* information on Lawrence Berkeley National Laboratory, please see
|
| 62 |
* <http://www.lbl.gov/>.
|
| 63 |
*/
|
| 64 |
|
| 65 |
#include "standard.h"
|
| 66 |
|
| 67 |
#include "octree.h"
|
| 68 |
|
| 69 |
#include "object.h"
|
| 70 |
|
| 71 |
#include "otypes.h"
|
| 72 |
|
| 73 |
static double ogetflt();
|
| 74 |
static long ogetint();
|
| 75 |
static char *ogetstr();
|
| 76 |
static int nonsurfinset();
|
| 77 |
static int getobj(), octerror(), skiptree();
|
| 78 |
static OCTREE getfullnode(), gettree();
|
| 79 |
|
| 80 |
static char *infn; /* input file specification */
|
| 81 |
static FILE *infp; /* input file stream */
|
| 82 |
static int objsize; /* size of stored OBJECT's */
|
| 83 |
static OBJECT objorig; /* zeroeth object */
|
| 84 |
static OBJECT fnobjects; /* number of objects in this file */
|
| 85 |
static short otypmap[NUMOTYPE+8]; /* object type map */
|
| 86 |
|
| 87 |
|
| 88 |
int
|
| 89 |
readoct(inpspec, load, scene, ofn) /* read in octree file or stream */
|
| 90 |
char *inpspec;
|
| 91 |
int load;
|
| 92 |
CUBE *scene;
|
| 93 |
char *ofn[];
|
| 94 |
{
|
| 95 |
char sbuf[512];
|
| 96 |
int nf;
|
| 97 |
register int i;
|
| 98 |
long m;
|
| 99 |
|
| 100 |
if (inpspec == NULL) {
|
| 101 |
infn = "standard input";
|
| 102 |
infp = stdin;
|
| 103 |
} else if (inpspec[0] == '!') {
|
| 104 |
infn = inpspec;
|
| 105 |
if ((infp = popen(inpspec+1, "r")) == NULL) {
|
| 106 |
sprintf(errmsg, "cannot execute \"%s\"", inpspec);
|
| 107 |
error(SYSTEM, errmsg);
|
| 108 |
}
|
| 109 |
} else {
|
| 110 |
infn = inpspec;
|
| 111 |
if ((infp = fopen(inpspec, "r")) == NULL) {
|
| 112 |
sprintf(errmsg, "cannot open octree file \"%s\"",
|
| 113 |
inpspec);
|
| 114 |
error(SYSTEM, errmsg);
|
| 115 |
}
|
| 116 |
}
|
| 117 |
#ifdef MSDOS
|
| 118 |
setmode(fileno(infp), O_BINARY);
|
| 119 |
#endif
|
| 120 |
/* get header */
|
| 121 |
if (checkheader(infp, OCTFMT, load&IO_INFO ? stdout : (FILE *)NULL) < 0)
|
| 122 |
octerror(USER, "not an octree");
|
| 123 |
/* check format */
|
| 124 |
if ((objsize = ogetint(2)-OCTMAGIC) <= 0 ||
|
| 125 |
objsize > MAXOBJSIZ || objsize > sizeof(long))
|
| 126 |
octerror(USER, "incompatible octree format");
|
| 127 |
/* get boundaries */
|
| 128 |
if (load & IO_BOUNDS) {
|
| 129 |
for (i = 0; i < 3; i++)
|
| 130 |
scene->cuorg[i] = atof(ogetstr(sbuf));
|
| 131 |
scene->cusize = atof(ogetstr(sbuf));
|
| 132 |
} else {
|
| 133 |
for (i = 0; i < 4; i++)
|
| 134 |
ogetstr(sbuf);
|
| 135 |
}
|
| 136 |
objorig = nobjects; /* set object offset */
|
| 137 |
nf = 0; /* get object files */
|
| 138 |
while (*ogetstr(sbuf)) {
|
| 139 |
if (load & IO_SCENE)
|
| 140 |
readobj(sbuf);
|
| 141 |
if (load & IO_FILES)
|
| 142 |
ofn[nf] = savqstr(sbuf);
|
| 143 |
nf++;
|
| 144 |
}
|
| 145 |
if (load & IO_FILES)
|
| 146 |
ofn[nf] = NULL;
|
| 147 |
/* get number of objects */
|
| 148 |
fnobjects = m = ogetint(objsize);
|
| 149 |
if (fnobjects != m)
|
| 150 |
octerror(USER, "too many objects");
|
| 151 |
|
| 152 |
if (load & IO_TREE) /* get the octree */
|
| 153 |
scene->cutree = gettree();
|
| 154 |
else if (load & IO_SCENE && nf == 0)
|
| 155 |
skiptree();
|
| 156 |
|
| 157 |
if (load & IO_SCENE) /* get the scene */
|
| 158 |
if (nf == 0) {
|
| 159 |
for (i = 0; *ogetstr(sbuf); i++)
|
| 160 |
if ((otypmap[i] = otype(sbuf)) < 0) {
|
| 161 |
sprintf(errmsg, "unknown type \"%s\"", sbuf);
|
| 162 |
octerror(WARNING, errmsg);
|
| 163 |
}
|
| 164 |
while (getobj() != OVOID)
|
| 165 |
;
|
| 166 |
} else { /* consistency checks */
|
| 167 |
/* check object count */
|
| 168 |
if (nobjects != objorig+fnobjects)
|
| 169 |
octerror(USER, "bad object count; octree stale?");
|
| 170 |
/* check for non-surfaces */
|
| 171 |
if (dosets(nonsurfinset))
|
| 172 |
octerror(USER, "modifier in tree; octree stale?");
|
| 173 |
}
|
| 174 |
/* close the input */
|
| 175 |
if (infn[0] == '!')
|
| 176 |
pclose(infp);
|
| 177 |
else
|
| 178 |
fclose(infp);
|
| 179 |
return(nf);
|
| 180 |
}
|
| 181 |
|
| 182 |
|
| 183 |
static char *
|
| 184 |
ogetstr(s) /* get null-terminated string */
|
| 185 |
char *s;
|
| 186 |
{
|
| 187 |
extern char *getstr();
|
| 188 |
|
| 189 |
if (getstr(s, infp) == NULL)
|
| 190 |
octerror(USER, "truncated octree");
|
| 191 |
return(s);
|
| 192 |
}
|
| 193 |
|
| 194 |
|
| 195 |
static OCTREE
|
| 196 |
getfullnode() /* get a set, return fullnode */
|
| 197 |
{
|
| 198 |
OBJECT set[MAXSET+1];
|
| 199 |
register int i;
|
| 200 |
register long m;
|
| 201 |
|
| 202 |
if ((set[0] = ogetint(objsize)) > MAXSET)
|
| 203 |
octerror(USER, "bad set in getfullnode");
|
| 204 |
for (i = 1; i <= set[0]; i++) {
|
| 205 |
m = ogetint(objsize) + objorig;
|
| 206 |
if ((set[i] = m) != m)
|
| 207 |
octerror(USER, "too many objects");
|
| 208 |
}
|
| 209 |
return(fullnode(set));
|
| 210 |
}
|
| 211 |
|
| 212 |
|
| 213 |
static long
|
| 214 |
ogetint(siz) /* get a siz-byte integer */
|
| 215 |
int siz;
|
| 216 |
{
|
| 217 |
extern long getint();
|
| 218 |
register long r;
|
| 219 |
|
| 220 |
r = getint(siz, infp);
|
| 221 |
if (feof(infp))
|
| 222 |
octerror(USER, "truncated octree");
|
| 223 |
return(r);
|
| 224 |
}
|
| 225 |
|
| 226 |
|
| 227 |
static double
|
| 228 |
ogetflt() /* get a floating point number */
|
| 229 |
{
|
| 230 |
extern double getflt();
|
| 231 |
double r;
|
| 232 |
|
| 233 |
r = getflt(infp);
|
| 234 |
if (feof(infp))
|
| 235 |
octerror(USER, "truncated octree");
|
| 236 |
return(r);
|
| 237 |
}
|
| 238 |
|
| 239 |
|
| 240 |
static OCTREE
|
| 241 |
gettree() /* get a pre-ordered octree */
|
| 242 |
{
|
| 243 |
register OCTREE ot;
|
| 244 |
register int i;
|
| 245 |
|
| 246 |
switch (getc(infp)) {
|
| 247 |
case OT_EMPTY:
|
| 248 |
return(EMPTY);
|
| 249 |
case OT_FULL:
|
| 250 |
return(getfullnode());
|
| 251 |
case OT_TREE:
|
| 252 |
if ((ot = octalloc()) == EMPTY)
|
| 253 |
octerror(SYSTEM, "out of tree space in gettree");
|
| 254 |
for (i = 0; i < 8; i++)
|
| 255 |
octkid(ot, i) = gettree();
|
| 256 |
return(ot);
|
| 257 |
case EOF:
|
| 258 |
octerror(USER, "truncated octree");
|
| 259 |
default:
|
| 260 |
octerror(USER, "damaged octree");
|
| 261 |
}
|
| 262 |
}
|
| 263 |
|
| 264 |
|
| 265 |
static int
|
| 266 |
nonsurfinset(os) /* check set for modifier */
|
| 267 |
register OBJECT *os;
|
| 268 |
{
|
| 269 |
register OBJECT s;
|
| 270 |
register int i;
|
| 271 |
|
| 272 |
for (i = *os; i-- > 0; )
|
| 273 |
if ((s = *++os) >= objorig && s < objorig+fnobjects &&
|
| 274 |
ismodifier(objptr(s)->otype))
|
| 275 |
return(1);
|
| 276 |
return(0);
|
| 277 |
}
|
| 278 |
|
| 279 |
|
| 280 |
static
|
| 281 |
skiptree() /* skip octree on input */
|
| 282 |
{
|
| 283 |
register int i;
|
| 284 |
|
| 285 |
switch (getc(infp)) {
|
| 286 |
case OT_EMPTY:
|
| 287 |
return;
|
| 288 |
case OT_FULL:
|
| 289 |
for (i = ogetint(objsize)*objsize; i-- > 0; )
|
| 290 |
if (getc(infp) == EOF)
|
| 291 |
octerror(USER, "truncated octree");
|
| 292 |
return;
|
| 293 |
case OT_TREE:
|
| 294 |
for (i = 0; i < 8; i++)
|
| 295 |
skiptree();
|
| 296 |
return;
|
| 297 |
case EOF:
|
| 298 |
octerror(USER, "truncated octree");
|
| 299 |
default:
|
| 300 |
octerror(USER, "damaged octree");
|
| 301 |
}
|
| 302 |
}
|
| 303 |
|
| 304 |
|
| 305 |
static
|
| 306 |
getobj() /* get next object */
|
| 307 |
{
|
| 308 |
char sbuf[MAXSTR];
|
| 309 |
int obj;
|
| 310 |
register int i;
|
| 311 |
register long m;
|
| 312 |
register OBJREC *objp;
|
| 313 |
|
| 314 |
i = ogetint(1);
|
| 315 |
if (i == -1)
|
| 316 |
return(OVOID); /* terminator */
|
| 317 |
if ((obj = newobject()) == OVOID)
|
| 318 |
error(SYSTEM, "out of object space");
|
| 319 |
objp = objptr(obj);
|
| 320 |
if ((objp->otype = otypmap[i]) < 0)
|
| 321 |
octerror(USER, "reference to unknown type");
|
| 322 |
if ((m = ogetint(objsize)) != OVOID) {
|
| 323 |
m += objorig;
|
| 324 |
if ((OBJECT)m != m)
|
| 325 |
octerror(USER, "too many objects");
|
| 326 |
}
|
| 327 |
objp->omod = m;
|
| 328 |
objp->oname = savqstr(ogetstr(sbuf));
|
| 329 |
if (objp->oargs.nsargs = ogetint(2)) {
|
| 330 |
objp->oargs.sarg = (char **)malloc
|
| 331 |
(objp->oargs.nsargs*sizeof(char *));
|
| 332 |
if (objp->oargs.sarg == NULL)
|
| 333 |
goto memerr;
|
| 334 |
for (i = 0; i < objp->oargs.nsargs; i++)
|
| 335 |
objp->oargs.sarg[i] = savestr(ogetstr(sbuf));
|
| 336 |
} else
|
| 337 |
objp->oargs.sarg = NULL;
|
| 338 |
#ifdef IARGS
|
| 339 |
if (objp->oargs.niargs = ogetint(2)) {
|
| 340 |
objp->oargs.iarg = (long *)malloc
|
| 341 |
(objp->oargs.niargs*sizeof(long));
|
| 342 |
if (objp->oargs.iarg == NULL)
|
| 343 |
goto memerr;
|
| 344 |
for (i = 0; i < objp->oargs.niargs; i++)
|
| 345 |
objp->oargs.iarg[i] = ogetint(4);
|
| 346 |
} else
|
| 347 |
objp->oargs.iarg = NULL;
|
| 348 |
#endif
|
| 349 |
if (objp->oargs.nfargs = ogetint(2)) {
|
| 350 |
objp->oargs.farg = (FLOAT *)malloc
|
| 351 |
(objp->oargs.nfargs*sizeof(FLOAT));
|
| 352 |
if (objp->oargs.farg == NULL)
|
| 353 |
goto memerr;
|
| 354 |
for (i = 0; i < objp->oargs.nfargs; i++)
|
| 355 |
objp->oargs.farg[i] = ogetflt();
|
| 356 |
} else
|
| 357 |
objp->oargs.farg = NULL;
|
| 358 |
/* initialize */
|
| 359 |
objp->os = NULL;
|
| 360 |
/* insert */
|
| 361 |
insertobject(obj);
|
| 362 |
return(obj);
|
| 363 |
memerr:
|
| 364 |
error(SYSTEM, "out of memory in getobj");
|
| 365 |
}
|
| 366 |
|
| 367 |
|
| 368 |
static
|
| 369 |
octerror(etyp, msg) /* octree error */
|
| 370 |
int etyp;
|
| 371 |
char *msg;
|
| 372 |
{
|
| 373 |
char msgbuf[128];
|
| 374 |
|
| 375 |
sprintf(msgbuf, "(%s): %s", infn, msg);
|
| 376 |
error(etyp, msgbuf);
|
| 377 |
}
|
