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#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.34 2020/04/08 00:57:39 greg Exp $"; |
3 |
#endif |
4 |
/* |
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* rtmain.c - main for rtrace per-ray calculation program |
6 |
*/ |
7 |
|
8 |
#include "copyright.h" |
9 |
|
10 |
#include <signal.h> |
11 |
|
12 |
#include "platform.h" |
13 |
#include "rtprocess.h" /* getpid() */ |
14 |
#include "resolu.h" |
15 |
#include "ray.h" |
16 |
#include "source.h" |
17 |
#include "ambient.h" |
18 |
#include "random.h" |
19 |
#include "paths.h" |
20 |
#include "pmapray.h" |
21 |
|
22 |
extern char *progname; /* global argv[0] */ |
23 |
|
24 |
extern char *shm_boundary; /* boundary of shared memory */ |
25 |
|
26 |
/* persistent processes define */ |
27 |
#ifdef F_SETLKW |
28 |
#define PERSIST 1 /* normal persist */ |
29 |
#define PARALLEL 2 /* parallel persist */ |
30 |
#define PCHILD 3 /* child of normal persist */ |
31 |
#endif |
32 |
|
33 |
char *sigerr[NSIG]; /* signal error messages */ |
34 |
char *errfile = NULL; /* error output file */ |
35 |
|
36 |
int nproc = 1; /* number of processes */ |
37 |
|
38 |
extern char *formstr(int f); /* string from format */ |
39 |
extern int setrtoutput(void); /* set output values */ |
40 |
|
41 |
int inform = 'a'; /* input format */ |
42 |
int outform = 'a'; /* output format */ |
43 |
char *outvals = "v"; /* output specification */ |
44 |
|
45 |
int hresolu = 0; /* horizontal (scan) size */ |
46 |
int vresolu = 0; /* vertical resolution */ |
47 |
|
48 |
extern int castonly; /* only doing ray-casting? */ |
49 |
|
50 |
int imm_irrad = 0; /* compute immediate irradiance? */ |
51 |
int lim_dist = 0; /* limit distance? */ |
52 |
|
53 |
#ifndef MAXMODLIST |
54 |
#define MAXMODLIST 1024 /* maximum modifiers we'll track */ |
55 |
#endif |
56 |
|
57 |
extern void (*addobjnotify[])(); /* object notification calls */ |
58 |
extern void tranotify(OBJECT obj); |
59 |
|
60 |
char *tralist[MAXMODLIST]; /* list of modifers to trace (or no) */ |
61 |
int traincl = -1; /* include == 1, exclude == 0 */ |
62 |
|
63 |
static int loadflags = ~IO_FILES; /* what to load from octree */ |
64 |
|
65 |
static void onsig(int signo); |
66 |
static void sigdie(int signo, char *msg); |
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static void printdefaults(void); |
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|
69 |
|
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int |
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main(int argc, char *argv[]) |
72 |
{ |
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#define check(ol,al) if (argv[i][ol] || \ |
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badarg(argc-i-1,argv+i+1,al)) \ |
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goto badopt |
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#define check_bool(olen,var) switch (argv[i][olen]) { \ |
77 |
case '\0': var = !var; break; \ |
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case 'y': case 'Y': case 't': case 'T': \ |
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case '+': case '1': var = 1; break; \ |
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case 'n': case 'N': case 'f': case 'F': \ |
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case '-': case '0': var = 0; break; \ |
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default: goto badopt; } |
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extern char *octname; |
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int persist = 0; |
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char *octnm = NULL; |
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char **tralp = NULL; |
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int duped1 = -1; |
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int rval; |
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int i; |
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/* global program name */ |
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progname = argv[0] = fixargv0(argv[0]); |
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/* add trace notify function */ |
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for (i = 0; addobjnotify[i] != NULL; i++) |
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; |
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addobjnotify[i] = tranotify; |
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/* option city */ |
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for (i = 1; i < argc; i++) { |
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/* expand arguments */ |
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while ((rval = expandarg(&argc, &argv, i)) > 0) |
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; |
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if (rval < 0) { |
102 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
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error(SYSTEM, errmsg); |
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} |
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if (argv[i] == NULL || argv[i][0] != '-') |
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break; /* break from options */ |
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if (!strcmp(argv[i], "-version")) { |
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puts(VersionID); |
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quit(0); |
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} |
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if (!strcmp(argv[i], "-defaults") || |
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!strcmp(argv[i], "-help")) { |
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printdefaults(); |
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quit(0); |
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} |
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rval = getrenderopt(argc-i, argv+i); |
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if (rval >= 0) { |
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i += rval; |
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continue; |
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} |
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switch (argv[i][1]) { |
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case 'n': /* number of cores */ |
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check(2,"i"); |
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nproc = atoi(argv[++i]); |
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if (nproc <= 0) |
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error(USER, "bad number of processes"); |
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break; |
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case 'x': /* x resolution */ |
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check(2,"i"); |
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hresolu = atoi(argv[++i]); |
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break; |
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case 'y': /* y resolution */ |
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check(2,"i"); |
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vresolu = atoi(argv[++i]); |
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break; |
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case 'w': /* warnings */ |
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rval = erract[WARNING].pf != NULL; |
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check_bool(2,rval); |
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if (rval) erract[WARNING].pf = wputs; |
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else erract[WARNING].pf = NULL; |
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break; |
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case 'e': /* error file */ |
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check(2,"s"); |
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errfile = argv[++i]; |
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break; |
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case 'l': /* limit distance */ |
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if (argv[i][2] != 'd') |
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goto badopt; |
149 |
check_bool(3,lim_dist); |
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break; |
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case 'I': /* immed. irradiance */ |
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check_bool(2,imm_irrad); |
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break; |
154 |
case 'f': /* format i/o */ |
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switch (argv[i][2]) { |
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case 'a': /* ascii */ |
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case 'f': /* float */ |
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case 'd': /* double */ |
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inform = argv[i][2]; |
160 |
break; |
161 |
default: |
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goto badopt; |
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} |
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switch (argv[i][3]) { |
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case '\0': |
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outform = inform; |
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break; |
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case 'a': /* ascii */ |
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case 'f': /* float */ |
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case 'd': /* double */ |
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case 'c': /* color */ |
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check(4,""); |
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outform = argv[i][3]; |
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break; |
175 |
default: |
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goto badopt; |
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} |
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break; |
179 |
case 'o': /* output */ |
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outvals = argv[i]+2; |
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break; |
182 |
case 'h': /* header output */ |
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rval = loadflags & IO_INFO; |
184 |
check_bool(2,rval); |
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loadflags = rval ? loadflags | IO_INFO : |
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loadflags & ~IO_INFO; |
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break; |
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case 't': /* trace */ |
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switch (argv[i][2]) { |
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case 'i': /* include */ |
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case 'I': |
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check(3,"s"); |
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if (traincl != 1) { |
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traincl = 1; |
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tralp = tralist; |
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} |
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if (argv[i][2] == 'I') { /* file */ |
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rval = wordfile(tralp, MAXMODLIST-(tralp-tralist), |
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getpath(argv[++i],getrlibpath(),R_OK)); |
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if (rval < 0) { |
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sprintf(errmsg, |
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"cannot open trace include file \"%s\"", |
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argv[i]); |
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error(SYSTEM, errmsg); |
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} |
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tralp += rval; |
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} else { |
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*tralp++ = argv[++i]; |
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*tralp = NULL; |
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} |
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break; |
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case 'e': /* exclude */ |
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case 'E': |
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check(3,"s"); |
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if (traincl != 0) { |
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traincl = 0; |
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tralp = tralist; |
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} |
219 |
if (argv[i][2] == 'E') { /* file */ |
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rval = wordfile(tralp, MAXMODLIST-(tralp-tralist), |
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getpath(argv[++i],getrlibpath(),R_OK)); |
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if (rval < 0) { |
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sprintf(errmsg, |
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"cannot open trace exclude file \"%s\"", |
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argv[i]); |
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error(SYSTEM, errmsg); |
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} |
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tralp += rval; |
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} else { |
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*tralp++ = argv[++i]; |
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*tralp = NULL; |
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} |
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break; |
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default: |
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goto badopt; |
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} |
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break; |
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#ifdef PERSIST |
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case 'P': /* persist file */ |
240 |
if (argv[i][2] == 'P') { |
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check(3,"s"); |
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persist = PARALLEL; |
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} else { |
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check(2,"s"); |
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persist = PERSIST; |
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} |
247 |
persistfile(argv[++i]); |
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break; |
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#endif |
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default: |
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goto badopt; |
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} |
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} |
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if (nproc > 1 && persist) |
255 |
error(USER, "multiprocessing incompatible with persist file"); |
256 |
/* initialize object types */ |
257 |
initotypes(); |
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/* initialize urand */ |
259 |
if (rand_samp) { |
260 |
srandom((long)time(0)); |
261 |
initurand(0); |
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} else { |
263 |
srandom(0L); |
264 |
initurand(2048); |
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} |
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/* set up signal handling */ |
267 |
sigdie(SIGINT, "Interrupt"); |
268 |
#ifdef SIGHUP |
269 |
sigdie(SIGHUP, "Hangup"); |
270 |
#endif |
271 |
sigdie(SIGTERM, "Terminate"); |
272 |
#ifdef SIGPIPE |
273 |
sigdie(SIGPIPE, "Broken pipe"); |
274 |
#endif |
275 |
#ifdef SIGALRM |
276 |
sigdie(SIGALRM, "Alarm clock"); |
277 |
#endif |
278 |
#ifdef SIGXCPU |
279 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
280 |
sigdie(SIGXFSZ, "File size exceeded"); |
281 |
#endif |
282 |
/* open error file */ |
283 |
if (errfile != NULL) { |
284 |
if (freopen(errfile, "a", stderr) == NULL) |
285 |
quit(2); |
286 |
fprintf(stderr, "**************\n*** PID %5d: ", |
287 |
getpid()); |
288 |
printargs(argc, argv, stderr); |
289 |
putc('\n', stderr); |
290 |
fflush(stderr); |
291 |
} |
292 |
#ifdef NICE |
293 |
nice(NICE); /* lower priority */ |
294 |
#endif |
295 |
/* get octree */ |
296 |
if (i == argc) |
297 |
octnm = NULL; |
298 |
else if (i == argc-1) |
299 |
octnm = argv[i]; |
300 |
else |
301 |
goto badopt; |
302 |
if (octnm == NULL) |
303 |
error(USER, "missing octree argument"); |
304 |
/* set up output */ |
305 |
#ifdef PERSIST |
306 |
if (persist) { |
307 |
duped1 = dup(fileno(stdout)); /* don't lose our output */ |
308 |
openheader(); |
309 |
} |
310 |
#endif |
311 |
if (outform != 'a') |
312 |
SET_FILE_BINARY(stdout); |
313 |
rval = setrtoutput(); |
314 |
readoct(octname = octnm, loadflags, &thescene, NULL); |
315 |
nsceneobjs = nobjects; |
316 |
|
317 |
if (loadflags & IO_INFO) { /* print header */ |
318 |
printargs(i, argv, stdout); |
319 |
printf("SOFTWARE= %s\n", VersionID); |
320 |
fputnow(stdout); |
321 |
if (rval > 0) /* saved from setrtoutput() call */ |
322 |
printf("NCOMP=%d\n", rval); |
323 |
if ((outform == 'f') | (outform == 'd')) |
324 |
fputendian(stdout); |
325 |
fputformat(formstr(outform), stdout); |
326 |
putchar('\n'); |
327 |
} |
328 |
|
329 |
if (!castonly) { /* any actual ray traversal to do? */ |
330 |
|
331 |
ray_init_pmap(); /* PMAP: set up & load photon maps */ |
332 |
|
333 |
marksources(); /* find and mark sources */ |
334 |
|
335 |
setambient(); /* initialize ambient calculation */ |
336 |
} else |
337 |
distantsources(); /* else mark only distant sources */ |
338 |
|
339 |
fflush(stdout); /* in case we're duplicating header */ |
340 |
|
341 |
#ifdef PERSIST |
342 |
if (persist) { |
343 |
/* reconnect stdout */ |
344 |
dup2(duped1, fileno(stdout)); |
345 |
close(duped1); |
346 |
if (persist == PARALLEL) { /* multiprocessing */ |
347 |
preload_objs(); /* preload scene */ |
348 |
shm_boundary = (char *)malloc(16); |
349 |
strcpy(shm_boundary, "SHM_BOUNDARY"); |
350 |
while ((rval=fork()) == 0) { /* keep on forkin' */ |
351 |
pflock(1); |
352 |
pfhold(); |
353 |
ambsync(); /* load new values */ |
354 |
} |
355 |
if (rval < 0) |
356 |
error(SYSTEM, "cannot fork child for persist function"); |
357 |
pfdetach(); /* parent will run then exit */ |
358 |
} |
359 |
} |
360 |
runagain: |
361 |
if (persist) |
362 |
dupheader(); /* send header to stdout */ |
363 |
#endif |
364 |
/* trace rays */ |
365 |
rtrace(NULL, nproc); |
366 |
/* flush ambient file */ |
367 |
ambsync(); |
368 |
#ifdef PERSIST |
369 |
if (persist == PERSIST) { /* first run-through */ |
370 |
if ((rval=fork()) == 0) { /* child loops until killed */ |
371 |
pflock(1); |
372 |
persist = PCHILD; |
373 |
} else { /* original process exits */ |
374 |
if (rval < 0) |
375 |
error(SYSTEM, "cannot fork child for persist function"); |
376 |
pfdetach(); /* parent exits */ |
377 |
} |
378 |
} |
379 |
if (persist == PCHILD) { /* wait for a signal then go again */ |
380 |
pfhold(); |
381 |
raynum = nrays = 0; /* reinitialize */ |
382 |
goto runagain; |
383 |
} |
384 |
#endif |
385 |
|
386 |
ray_done_pmap(); /* PMAP: free photon maps */ |
387 |
|
388 |
quit(0); |
389 |
|
390 |
badopt: |
391 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
392 |
error(USER, errmsg); |
393 |
return 1; /* pro forma return */ |
394 |
|
395 |
#undef check |
396 |
#undef check_bool |
397 |
} |
398 |
|
399 |
|
400 |
void |
401 |
wputs( /* warning output function */ |
402 |
char *s |
403 |
) |
404 |
{ |
405 |
int lasterrno = errno; |
406 |
eputs(s); |
407 |
errno = lasterrno; |
408 |
} |
409 |
|
410 |
|
411 |
void |
412 |
eputs( /* put string to stderr */ |
413 |
register char *s |
414 |
) |
415 |
{ |
416 |
static int midline = 0; |
417 |
|
418 |
if (!*s) |
419 |
return; |
420 |
if (!midline++) { |
421 |
fputs(progname, stderr); |
422 |
fputs(": ", stderr); |
423 |
} |
424 |
fputs(s, stderr); |
425 |
if (s[strlen(s)-1] == '\n') { |
426 |
fflush(stderr); |
427 |
midline = 0; |
428 |
} |
429 |
} |
430 |
|
431 |
|
432 |
static void |
433 |
onsig( /* fatal signal */ |
434 |
int signo |
435 |
) |
436 |
{ |
437 |
static int gotsig = 0; |
438 |
|
439 |
if (gotsig++) /* two signals and we're gone! */ |
440 |
_exit(signo); |
441 |
|
442 |
#ifdef SIGALRM |
443 |
alarm(15); /* allow 15 seconds to clean up */ |
444 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
445 |
#endif |
446 |
eputs("signal - "); |
447 |
eputs(sigerr[signo]); |
448 |
eputs("\n"); |
449 |
quit(3); |
450 |
} |
451 |
|
452 |
|
453 |
static void |
454 |
sigdie( /* set fatal signal */ |
455 |
int signo, |
456 |
char *msg |
457 |
) |
458 |
{ |
459 |
if (signal(signo, onsig) == SIG_IGN) |
460 |
signal(signo, SIG_IGN); |
461 |
sigerr[signo] = msg; |
462 |
} |
463 |
|
464 |
|
465 |
static void |
466 |
printdefaults(void) /* print default values to stdout */ |
467 |
{ |
468 |
register char *cp; |
469 |
|
470 |
if (imm_irrad) |
471 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
472 |
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
473 |
printf("-x %-9d\t\t\t# %s\n", hresolu, |
474 |
vresolu && hresolu ? "x resolution" : "flush interval"); |
475 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
476 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
477 |
"-ld-\t\t\t\t# limit distance off\n"); |
478 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-', |
479 |
loadflags & IO_INFO ? "output" : "no"); |
480 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
481 |
inform, outform, formstr(inform), formstr(outform)); |
482 |
printf("-o%-9s\t\t\t# output", outvals); |
483 |
for (cp = outvals; *cp; cp++) |
484 |
switch (*cp) { |
485 |
case 't': case 'T': printf(" trace"); break; |
486 |
case 'o': printf(" origin"); break; |
487 |
case 'd': printf(" direction"); break; |
488 |
case 'r': printf(" reflect_contrib"); break; |
489 |
case 'R': printf(" reflect_length"); break; |
490 |
case 'x': printf(" unreflect_contrib"); break; |
491 |
case 'X': printf(" unreflect_length"); break; |
492 |
case 'v': printf(" value"); break; |
493 |
case 'V': printf(" contribution"); break; |
494 |
case 'l': printf(" length"); break; |
495 |
case 'L': printf(" first_length"); break; |
496 |
case 'p': printf(" point"); break; |
497 |
case 'n': printf(" normal"); break; |
498 |
case 'N': printf(" unperturbed_normal"); break; |
499 |
case 's': printf(" surface"); break; |
500 |
case 'w': printf(" weight"); break; |
501 |
case 'W': printf(" coefficient"); break; |
502 |
case 'm': printf(" modifier"); break; |
503 |
case 'M': printf(" material"); break; |
504 |
case '-': printf(" stroke"); break; |
505 |
} |
506 |
putchar('\n'); |
507 |
printf(erract[WARNING].pf != NULL ? |
508 |
"-w+\t\t\t\t# warning messages on\n" : |
509 |
"-w-\t\t\t\t# warning messages off\n"); |
510 |
print_rdefaults(); |
511 |
} |