ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/ot/oconv.c
Revision: 1.12
Committed: Thu Dec 13 10:52:51 1990 UTC (33 years, 3 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.11: +2 -0 lines
Log Message:
added new initialization for ofun[]

File Contents

# Content
1 /* Copyright (c) 1986 Regents of the University of California */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ LBL";
5 #endif
6
7 /*
8 * oconv.c - main program for object to octree conversion.
9 *
10 * 7/29/85
11 */
12
13 #include "standard.h"
14
15 #include "octree.h"
16
17 #include "object.h"
18
19 #include "otypes.h"
20
21 #define OMARGIN (10*FTINY) /* margin around global cube */
22
23 #define MAXOBJFIL 63 /* maximum number of scene files */
24
25 char *progname; /* argv[0] */
26
27 char *libpath; /* library search path */
28
29 int nowarn = 0; /* supress warnings? */
30
31 int objlim = 5; /* # of objects before split */
32
33 int resolu = 1024; /* octree resolution limit */
34
35 CUBE thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0}; /* our scene */
36
37 char *ofname[MAXOBJFIL+1]; /* object file names */
38 int nfiles = 0; /* number of object files */
39
40 double mincusize; /* minimum cube size from resolu */
41
42 int (*addobjnotify[])() = {NULL}; /* new object notifier functions */
43
44
45 main(argc, argv) /* convert object files to an octree */
46 int argc;
47 char **argv;
48 {
49 char *getenv();
50 double atof();
51 FVECT bbmin, bbmax;
52 char *infile = NULL;
53 int outflags = IO_ALL;
54 OBJECT startobj;
55 int i;
56
57 progname = argv[0];
58
59 if ((libpath = getenv("RAYPATH")) == NULL)
60 libpath = ":/usr/local/lib/ray";
61
62 initotypes();
63
64 for (i = 1; i < argc && argv[i][0] == '-'; i++)
65 switch (argv[i][1]) {
66 case '\0': /* scene from stdin */
67 goto breakopt;
68 case 'i': /* input octree */
69 infile = argv[++i];
70 break;
71 case 'b': /* bounding cube */
72 thescene.cuorg[0] = atof(argv[++i]) - OMARGIN;
73 thescene.cuorg[1] = atof(argv[++i]) - OMARGIN;
74 thescene.cuorg[2] = atof(argv[++i]) - OMARGIN;
75 thescene.cusize = atof(argv[++i]) + 2*OMARGIN;
76 break;
77 case 'n': /* set limit */
78 objlim = atoi(argv[++i]);
79 break;
80 case 'r': /* resolution limit */
81 resolu = atoi(argv[++i]);
82 break;
83 case 'f': /* freeze octree */
84 outflags &= ~IO_FILES;
85 break;
86 case 'w': /* supress warnings */
87 nowarn = 1;
88 break;
89 default:
90 sprintf(errmsg, "unknown option: '%s'", argv[i]);
91 error(USER, errmsg);
92 break;
93 }
94 breakopt:
95 if (infile != NULL) { /* get old octree & objects */
96 if (thescene.cusize > FTINY)
97 error(USER, "only one of '-b' or '-i'");
98 nfiles = readoct(infile, IO_ALL, &thescene, ofname);
99 if (nfiles == 0 && outflags & IO_FILES) {
100 error(WARNING, "frozen octree");
101 outflags &= ~IO_FILES;
102 }
103 }
104
105 printargs(argc, argv, stdout); /* info. header */
106 printf("\n");
107
108 startobj = nobjects; /* previous objects already converted */
109
110 for ( ; i < argc; i++) /* read new scene descriptions */
111 if (!strcmp(argv[i], "-")) { /* from stdin */
112 readobj(NULL);
113 outflags &= ~IO_FILES;
114 } else { /* from file */
115 if (nfiles >= MAXOBJFIL)
116 error(INTERNAL, "too many scene files");
117 readobj(ofname[nfiles++] = argv[i]);
118 }
119
120 ofname[nfiles] = NULL;
121 /* find bounding box */
122 bbmin[0] = bbmin[1] = bbmin[2] = FHUGE;
123 bbmax[0] = bbmax[1] = bbmax[2] = -FHUGE;
124 for (i = startobj; i < nobjects; i++)
125 add2bbox(objptr(i), bbmin, bbmax);
126 /* set/check cube */
127 if (thescene.cusize == 0.0) {
128 if (bbmin[0] <= bbmax[0]) {
129 for (i = 0; i < 3; i++) {
130 bbmin[i] -= OMARGIN;
131 bbmax[i] += OMARGIN;
132 }
133 for (i = 0; i < 3; i++)
134 if (bbmax[i] - bbmin[i] > thescene.cusize)
135 thescene.cusize = bbmax[i] - bbmin[i];
136 for (i = 0; i < 3; i++)
137 thescene.cuorg[i] =
138 (bbmax[i]+bbmin[i]-thescene.cusize)*.5;
139 }
140 } else {
141 for (i = 0; i < 3; i++)
142 if (bbmin[i] < thescene.cuorg[i] ||
143 bbmax[i] > thescene.cuorg[i] + thescene.cusize)
144 error(USER, "boundary does not encompass scene");
145 }
146
147 mincusize = thescene.cusize / resolu - FTINY;
148
149 for (i = startobj; i < nobjects; i++) /* add new objects */
150 addobject(&thescene, i);
151
152 thescene.cutree = combine(thescene.cutree); /* optimize */
153
154 writeoct(outflags, &thescene, ofname); /* write structures to stdout */
155
156 quit(0);
157 }
158
159
160 quit(code) /* exit program */
161 int code;
162 {
163 exit(code);
164 }
165
166
167 cputs() /* interactive error */
168 {
169 /* referenced, but not used */
170 }
171
172
173 wputs(s) /* warning message */
174 char *s;
175 {
176 if (!nowarn)
177 eputs(s);
178 }
179
180
181 eputs(s) /* put string to stderr */
182 register char *s;
183 {
184 static int inln = 0;
185
186 if (!inln++) {
187 fputs(progname, stderr);
188 fputs(": ", stderr);
189 }
190 fputs(s, stderr);
191 if (*s && s[strlen(s)-1] == '\n')
192 inln = 0;
193 }
194
195
196 #define bitop(f,i,op) (f[((i)>>3)] op (1<<((i)&7)))
197 #define tstbit(f,i) bitop(f,i,&)
198 #define setbit(f,i) bitop(f,i,|=)
199 #define clrbit(f,i) bitop(f,i,&=~)
200 #define tglbit(f,i) bitop(f,i,^=)
201
202
203 addobject(cu, obj) /* add an object to a cube */
204 register CUBE *cu;
205 OBJECT obj;
206 {
207 CUBE cukid;
208 OCTREE ot;
209 OBJECT oset[MAXSET+1];
210 unsigned char inflg[MAXSET/8], volflg[MAXSET/8];
211 int in;
212 register int i, j;
213
214 in = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu);
215
216 if (in == O_MISS)
217 return; /* no intersection */
218
219 if (istree(cu->cutree)) {
220 /* do children */
221 cukid.cusize = cu->cusize * 0.5;
222 for (i = 0; i < 8; i++) {
223 cukid.cutree = octkid(cu->cutree, i);
224 for (j = 0; j < 3; j++) {
225 cukid.cuorg[j] = cu->cuorg[j];
226 if ((1<<j) & i)
227 cukid.cuorg[j] += cukid.cusize;
228 }
229 addobject(&cukid, obj);
230 octkid(cu->cutree, i) = cukid.cutree;
231 }
232 return;
233 }
234 if (isempty(cu->cutree)) {
235 /* singular set */
236 oset[0] = 1; oset[1] = obj;
237 cu->cutree = fullnode(oset);
238 return;
239 }
240 /* add to full node */
241 objset(oset, cu->cutree);
242 cukid.cusize = cu->cusize * 0.5;
243
244 if (in==O_IN || oset[0] < objlim || cukid.cusize < mincusize) {
245 /* add to set */
246 if (oset[0] >= MAXSET) {
247 sprintf(errmsg,
248 "set overflow in addobject (%s)",
249 objptr(obj)->oname);
250 error(INTERNAL, errmsg);
251 }
252 insertelem(oset, obj);
253 cu->cutree = fullnode(oset);
254 return;
255 }
256 /* subdivide cube */
257 if ((ot = octalloc()) == EMPTY)
258 error(SYSTEM, "out of octree space");
259 /* mark volumes */
260 j = (oset[0]+7)>>3;
261 while (j--)
262 volflg[j] = inflg[j] = 0;
263 for (j = 1; j <= oset[0]; j++)
264 if (isvolume(objptr(oset[j])->otype)) {
265 setbit(volflg,j-1);
266 if ((*ofun[objptr(oset[j])->otype].funp)
267 (objptr(oset[j]),cu) == O_IN)
268 setbit(inflg,j-1);
269 }
270 /* assign subcubes */
271 for (i = 0; i < 8; i++) {
272 cukid.cutree = EMPTY;
273 for (j = 0; j < 3; j++) {
274 cukid.cuorg[j] = cu->cuorg[j];
275 if ((1<<j) & i)
276 cukid.cuorg[j] += cukid.cusize;
277 }
278 /* surfaces first */
279 for (j = 1; j <= oset[0]; j++)
280 if (!tstbit(volflg,j-1))
281 addobject(&cukid, oset[j]);
282 /* then this object */
283 addobject(&cukid, obj);
284 /* partial volumes */
285 for (j = 1; j <= oset[0]; j++)
286 if (tstbit(volflg,j-1) &&
287 !tstbit(inflg,j-1))
288 addobject(&cukid, oset[j]);
289 /* full volumes */
290 for (j = 1; j <= oset[0]; j++)
291 if (tstbit(inflg,j-1))
292 addobject(&cukid, oset[j]);
293 /* returned node */
294 octkid(ot, i) = cukid.cutree;
295 }
296 cu->cutree = ot;
297 }