1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.11 |
static const char RCSid[] = "$Id: rcmain.c,v 2.10 2013/08/07 05:10:09 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
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/* |
5 |
|
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* rcmain.c - main for rtcontrib ray contribution tracer |
6 |
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*/ |
7 |
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8 |
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#include "copyright.h" |
9 |
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10 |
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#include <signal.h> |
11 |
greg |
2.10 |
#include <time.h> |
12 |
greg |
2.1 |
#include "rcontrib.h" |
13 |
greg |
2.6 |
#include "random.h" |
14 |
greg |
2.1 |
#include "source.h" |
15 |
|
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#include "ambient.h" |
16 |
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17 |
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int gargc; /* global argc */ |
18 |
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char **gargv; /* global argv */ |
19 |
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char *octname; /* global octree name */ |
20 |
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char *progname; /* global argv[0] */ |
21 |
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22 |
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char *sigerr[NSIG]; /* signal error messages */ |
23 |
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24 |
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int nproc = 1; /* number of processes requested */ |
25 |
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int nchild = 0; /* number of children (-1 in child) */ |
26 |
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27 |
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int inpfmt = 'a'; /* input format */ |
28 |
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int outfmt = 'a'; /* output format */ |
29 |
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30 |
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int header = 1; /* output header? */ |
31 |
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int force_open = 0; /* truncate existing output? */ |
32 |
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int recover = 0; /* recover previous output? */ |
33 |
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int accumulate = 1; /* input rays per output record */ |
34 |
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int contrib = 0; /* computing contributions? */ |
35 |
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36 |
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int xres = 0; /* horizontal (scan) size */ |
37 |
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int yres = 0; /* vertical resolution */ |
38 |
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39 |
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int using_stdout = 0; /* are we using stdout? */ |
40 |
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41 |
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int imm_irrad = 0; /* compute immediate irradiance? */ |
42 |
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int lim_dist = 0; /* limit distance? */ |
43 |
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44 |
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const char *modname[MAXMODLIST]; /* ordered modifier name list */ |
45 |
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int nmods = 0; /* number of modifiers */ |
46 |
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|
47 |
greg |
2.4 |
void (*addobjnotify[8])() = {ambnotify, NULL}; |
48 |
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49 |
greg |
2.9 |
char RCCONTEXT[] = "RC"; /* our special evaluation context */ |
50 |
greg |
2.1 |
|
51 |
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52 |
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static void |
53 |
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printdefaults(void) /* print default values to stdout */ |
54 |
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{ |
55 |
greg |
2.3 |
printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate); |
56 |
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printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-', |
57 |
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contrib ? "contributions" : "coefficients"); |
58 |
greg |
2.1 |
if (imm_irrad) |
59 |
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printf("-I+\t\t\t\t# immediate irradiance on\n"); |
60 |
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printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
61 |
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printf("-x %-9d\t\t\t# %s\n", xres, |
62 |
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yres && xres ? "x resolution" : "flush interval"); |
63 |
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printf("-y %-9d\t\t\t# y resolution\n", yres); |
64 |
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printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
65 |
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"-ld-\t\t\t\t# limit distance off\n"); |
66 |
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printf("-h%c\t\t\t\t# %s header\n", header ? '+' : '-', |
67 |
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header ? "output" : "no"); |
68 |
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printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
69 |
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inpfmt, outfmt, formstr(inpfmt), formstr(outfmt)); |
70 |
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printf(erract[WARNING].pf != NULL ? |
71 |
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"-w+\t\t\t\t# warning messages on\n" : |
72 |
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"-w-\t\t\t\t# warning messages off\n"); |
73 |
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print_rdefaults(); |
74 |
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} |
75 |
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76 |
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77 |
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static void |
78 |
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onsig( /* fatal signal */ |
79 |
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int signo |
80 |
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) |
81 |
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{ |
82 |
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static int gotsig = 0; |
83 |
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84 |
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if (gotsig++) /* two signals and we're gone! */ |
85 |
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_exit(signo); |
86 |
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87 |
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#ifdef SIGALRM |
88 |
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alarm(15); /* allow 15 seconds to clean up */ |
89 |
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signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
90 |
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#endif |
91 |
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eputs("signal - "); |
92 |
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eputs(sigerr[signo]); |
93 |
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eputs("\n"); |
94 |
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quit(3); |
95 |
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} |
96 |
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97 |
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98 |
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static void |
99 |
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sigdie( /* set fatal signal */ |
100 |
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int signo, |
101 |
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char *msg |
102 |
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) |
103 |
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{ |
104 |
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if (signal(signo, onsig) == SIG_IGN) |
105 |
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signal(signo, SIG_IGN); |
106 |
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sigerr[signo] = msg; |
107 |
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} |
108 |
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109 |
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110 |
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/* set input/output format */ |
111 |
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static void |
112 |
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setformat(const char *fmt) |
113 |
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{ |
114 |
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switch (fmt[0]) { |
115 |
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case 'f': |
116 |
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case 'd': |
117 |
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SET_FILE_BINARY(stdin); |
118 |
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/* fall through */ |
119 |
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case 'a': |
120 |
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inpfmt = fmt[0]; |
121 |
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break; |
122 |
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default: |
123 |
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goto fmterr; |
124 |
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} |
125 |
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switch (fmt[1]) { |
126 |
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case '\0': |
127 |
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outfmt = inpfmt; |
128 |
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return; |
129 |
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case 'a': |
130 |
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case 'f': |
131 |
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case 'd': |
132 |
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case 'c': |
133 |
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outfmt = fmt[1]; |
134 |
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break; |
135 |
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default: |
136 |
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goto fmterr; |
137 |
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} |
138 |
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if (!fmt[2]) |
139 |
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return; |
140 |
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fmterr: |
141 |
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sprintf(errmsg, "Illegal i/o format: -f%s", fmt); |
142 |
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error(USER, errmsg); |
143 |
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} |
144 |
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145 |
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146 |
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/* Set overriding options */ |
147 |
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static void |
148 |
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override_options(void) |
149 |
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{ |
150 |
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shadthresh = 0; |
151 |
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ambssamp = 0; |
152 |
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ambacc = 0; |
153 |
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if (accumulate <= 0) /* no output flushing for single record */ |
154 |
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xres = yres = 0; |
155 |
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} |
156 |
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157 |
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158 |
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int |
159 |
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main(int argc, char *argv[]) |
160 |
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{ |
161 |
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#define check(ol,al) if (argv[i][ol] || \ |
162 |
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badarg(argc-i-1,argv+i+1,al)) \ |
163 |
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goto badopt |
164 |
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#define bool(olen,var) switch (argv[i][olen]) { \ |
165 |
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case '\0': var = !var; break; \ |
166 |
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case 'y': case 'Y': case 't': case 'T': \ |
167 |
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case '+': case '1': var = 1; break; \ |
168 |
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case 'n': case 'N': case 'f': case 'F': \ |
169 |
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case '-': case '0': var = 0; break; \ |
170 |
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default: goto badopt; } |
171 |
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char *curout = NULL; |
172 |
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char *binval = NULL; |
173 |
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int bincnt = 0; |
174 |
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int rval; |
175 |
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int i; |
176 |
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/* global program name */ |
177 |
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progname = argv[0] = fixargv0(argv[0]); |
178 |
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gargv = argv; |
179 |
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gargc = argc; |
180 |
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/* initialize calcomp routines early */ |
181 |
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initfunc(); |
182 |
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setcontext(RCCONTEXT); |
183 |
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/* option city */ |
184 |
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for (i = 1; i < argc; i++) { |
185 |
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/* expand arguments */ |
186 |
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while ((rval = expandarg(&argc, &argv, i)) > 0) |
187 |
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; |
188 |
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if (rval < 0) { |
189 |
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sprintf(errmsg, "cannot expand '%s'", argv[i]); |
190 |
|
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error(SYSTEM, errmsg); |
191 |
|
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} |
192 |
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if (argv[i] == NULL || argv[i][0] != '-') |
193 |
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break; /* break from options */ |
194 |
|
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if (!strcmp(argv[i], "-version")) { |
195 |
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puts(VersionID); |
196 |
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quit(0); |
197 |
|
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} |
198 |
|
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if (!strcmp(argv[i], "-defaults") || |
199 |
|
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!strcmp(argv[i], "-help")) { |
200 |
|
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override_options(); |
201 |
|
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printdefaults(); |
202 |
|
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quit(0); |
203 |
|
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} |
204 |
|
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rval = getrenderopt(argc-i, argv+i); |
205 |
|
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if (rval >= 0) { |
206 |
|
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i += rval; |
207 |
|
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continue; |
208 |
|
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} |
209 |
|
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switch (argv[i][1]) { |
210 |
|
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case 'n': /* number of cores */ |
211 |
|
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check(2,"i"); |
212 |
|
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nproc = atoi(argv[++i]); |
213 |
|
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if (nproc <= 0) |
214 |
|
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error(USER, "bad number of processes"); |
215 |
|
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break; |
216 |
|
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case 'V': /* output contributions */ |
217 |
|
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bool(2,contrib); |
218 |
|
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break; |
219 |
|
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case 'x': /* x resolution */ |
220 |
|
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check(2,"i"); |
221 |
|
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xres = atoi(argv[++i]); |
222 |
|
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break; |
223 |
|
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case 'y': /* y resolution */ |
224 |
|
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check(2,"i"); |
225 |
|
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yres = atoi(argv[++i]); |
226 |
|
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break; |
227 |
|
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case 'w': /* warnings */ |
228 |
greg |
2.2 |
rval = (erract[WARNING].pf != NULL); |
229 |
greg |
2.1 |
bool(2,rval); |
230 |
|
|
if (rval) erract[WARNING].pf = wputs; |
231 |
|
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else erract[WARNING].pf = NULL; |
232 |
|
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break; |
233 |
|
|
case 'e': /* expression */ |
234 |
|
|
check(2,"s"); |
235 |
|
|
scompile(argv[++i], NULL, 0); |
236 |
|
|
break; |
237 |
|
|
case 'l': /* limit distance */ |
238 |
|
|
if (argv[i][2] != 'd') |
239 |
|
|
goto badopt; |
240 |
|
|
bool(3,lim_dist); |
241 |
|
|
break; |
242 |
|
|
case 'I': /* immed. irradiance */ |
243 |
|
|
bool(2,imm_irrad); |
244 |
|
|
break; |
245 |
|
|
case 'f': /* file or force or format */ |
246 |
|
|
if (!argv[i][2]) { |
247 |
|
|
check(2,"s"); |
248 |
|
|
loadfunc(argv[++i]); |
249 |
|
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break; |
250 |
|
|
} |
251 |
|
|
if (argv[i][2] == 'o') { |
252 |
|
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bool(3,force_open); |
253 |
|
|
break; |
254 |
|
|
} |
255 |
|
|
setformat(argv[i]+2); |
256 |
|
|
break; |
257 |
|
|
case 'o': /* output */ |
258 |
|
|
check(2,"s"); |
259 |
|
|
curout = argv[++i]; |
260 |
|
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break; |
261 |
|
|
case 'c': /* input rays per output */ |
262 |
|
|
check(2,"i"); |
263 |
|
|
accumulate = atoi(argv[++i]); |
264 |
|
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break; |
265 |
|
|
case 'r': /* recover output */ |
266 |
|
|
bool(2,recover); |
267 |
|
|
break; |
268 |
|
|
case 'h': /* header output */ |
269 |
|
|
bool(2,header); |
270 |
|
|
break; |
271 |
|
|
case 'b': /* bin expression/count */ |
272 |
|
|
if (argv[i][2] == 'n') { |
273 |
|
|
check(3,"s"); |
274 |
|
|
bincnt = (int)(eval(argv[++i]) + .5); |
275 |
|
|
break; |
276 |
|
|
} |
277 |
|
|
check(2,"s"); |
278 |
|
|
binval = argv[++i]; |
279 |
|
|
break; |
280 |
|
|
case 'm': /* modifier name */ |
281 |
|
|
check(2,"s"); |
282 |
|
|
addmodifier(argv[++i], curout, binval, bincnt); |
283 |
|
|
break; |
284 |
|
|
case 'M': /* modifier file */ |
285 |
|
|
check(2,"s"); |
286 |
|
|
addmodfile(argv[++i], curout, binval, bincnt); |
287 |
|
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break; |
288 |
|
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default: |
289 |
|
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goto badopt; |
290 |
|
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} |
291 |
|
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} |
292 |
greg |
2.11 |
if (nmods <= 0) |
293 |
|
|
error(USER, "missing required modifier argument"); |
294 |
greg |
2.1 |
/* override some option settings */ |
295 |
|
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override_options(); |
296 |
|
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/* initialize object types */ |
297 |
|
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initotypes(); |
298 |
|
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/* initialize urand */ |
299 |
|
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if (rand_samp) { |
300 |
|
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srandom((long)time(0)); |
301 |
|
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initurand(0); |
302 |
|
|
} else { |
303 |
|
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srandom(0L); |
304 |
|
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initurand(2048); |
305 |
|
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} |
306 |
|
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/* set up signal handling */ |
307 |
|
|
sigdie(SIGINT, "Interrupt"); |
308 |
|
|
#ifdef SIGHUP |
309 |
|
|
sigdie(SIGHUP, "Hangup"); |
310 |
|
|
#endif |
311 |
|
|
sigdie(SIGTERM, "Terminate"); |
312 |
|
|
#ifdef SIGPIPE |
313 |
|
|
sigdie(SIGPIPE, "Broken pipe"); |
314 |
|
|
#endif |
315 |
|
|
#ifdef SIGALRM |
316 |
|
|
sigdie(SIGALRM, "Alarm clock"); |
317 |
|
|
#endif |
318 |
|
|
#ifdef SIGXCPU |
319 |
|
|
sigdie(SIGXCPU, "CPU limit exceeded"); |
320 |
|
|
sigdie(SIGXFSZ, "File size exceeded"); |
321 |
|
|
#endif |
322 |
|
|
#ifdef NICE |
323 |
|
|
nice(NICE); /* lower priority */ |
324 |
|
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#endif |
325 |
|
|
/* get octree */ |
326 |
|
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if (i == argc) |
327 |
|
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octname = NULL; |
328 |
|
|
else if (i == argc-1) |
329 |
|
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octname = argv[i]; |
330 |
|
|
else |
331 |
|
|
goto badopt; |
332 |
|
|
if (octname == NULL) |
333 |
|
|
error(USER, "missing octree argument"); |
334 |
|
|
|
335 |
|
|
readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
336 |
|
|
nsceneobjs = nobjects; |
337 |
|
|
|
338 |
|
|
marksources(); /* find and mark sources */ |
339 |
|
|
|
340 |
|
|
setambient(); /* initialize ambient calculation */ |
341 |
|
|
|
342 |
greg |
2.2 |
rcontrib(); /* trace ray contributions (loop) */ |
343 |
greg |
2.1 |
|
344 |
|
|
ambsync(); /* flush ambient file */ |
345 |
|
|
|
346 |
|
|
quit(0); /* exit clean */ |
347 |
|
|
|
348 |
|
|
badopt: |
349 |
|
|
fprintf(stderr, |
350 |
|
|
"Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n", |
351 |
|
|
progname); |
352 |
|
|
sprintf(errmsg, "command line error at '%s'", argv[i]); |
353 |
|
|
error(USER, errmsg); |
354 |
|
|
return(1); /* pro forma return */ |
355 |
|
|
|
356 |
|
|
#undef check |
357 |
|
|
#undef bool |
358 |
|
|
} |
359 |
|
|
|
360 |
|
|
|
361 |
|
|
void |
362 |
|
|
wputs( /* warning output function */ |
363 |
|
|
char *s |
364 |
|
|
) |
365 |
|
|
{ |
366 |
|
|
int lasterrno = errno; |
367 |
|
|
eputs(s); |
368 |
|
|
errno = lasterrno; |
369 |
|
|
} |
370 |
|
|
|
371 |
|
|
|
372 |
|
|
void |
373 |
|
|
eputs( /* put string to stderr */ |
374 |
|
|
char *s |
375 |
|
|
) |
376 |
|
|
{ |
377 |
|
|
static int midline = 0; |
378 |
|
|
|
379 |
|
|
if (!*s) |
380 |
|
|
return; |
381 |
|
|
if (!midline++) { |
382 |
|
|
fputs(progname, stderr); |
383 |
|
|
fputs(": ", stderr); |
384 |
|
|
} |
385 |
|
|
fputs(s, stderr); |
386 |
|
|
if (s[strlen(s)-1] == '\n') { |
387 |
|
|
fflush(stderr); |
388 |
|
|
midline = 0; |
389 |
|
|
} |
390 |
|
|
} |