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#ifndef lint |
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static const char RCSid[] = "$Id: mkillum.c,v 2.27 2006/06/07 17:52:04 schorsch Exp $"; |
3 |
#endif |
4 |
/* |
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* Make illum sources for optimizing rendering process |
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*/ |
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|
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#include <signal.h> |
9 |
#include <ctype.h> |
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|
11 |
#include "platform.h" |
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#include "mkillum.h" |
13 |
#include "random.h" |
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|
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/* default parameters */ |
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#define SAMPDENS 48 /* points per projected steradian */ |
17 |
#define NSAMPS 32 /* samples per point */ |
18 |
#define DFLMAT "illum_mat" /* material name */ |
19 |
#define DFLDAT "illum" /* data file name */ |
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/* selection options */ |
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#define S_NONE 0 /* select none */ |
22 |
#define S_ELEM 1 /* select specified element */ |
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#define S_COMPL 2 /* select all but element */ |
24 |
#define S_ALL 3 /* select all */ |
25 |
|
26 |
struct illum_args thisillum = { /* our illum and default values */ |
27 |
0, |
28 |
DFLMAT, |
29 |
DFLDAT, |
30 |
0, |
31 |
VOIDID, |
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SAMPDENS, |
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NSAMPS, |
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0., |
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}; |
36 |
|
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char matcheck[MAXSTR]; /* current material to include or exclude */ |
38 |
int matselect = S_ALL; /* selection criterion */ |
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|
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int gargc; /* global argc */ |
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char **gargv; /* global argv */ |
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|
43 |
int doneheader = 0; /* printed header yet? */ |
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#define checkhead() if (!doneheader++) printhead(gargc,gargv) |
45 |
|
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int warnings = 1; /* print warnings? */ |
47 |
|
48 |
void init(char *octnm, int np); |
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void filter(register FILE *infp, char *name); |
50 |
void xoptions(char *s, char *nm); |
51 |
void printopts(void); |
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void printhead(register int ac, register char **av); |
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void xobject(FILE *fp, char *nm); |
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|
55 |
|
56 |
int |
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main( /* compute illum distributions using rtrace */ |
58 |
int argc, |
59 |
char *argv[] |
60 |
) |
61 |
{ |
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int nprocs = 1; |
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FILE *fp; |
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int rval; |
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register int i; |
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/* set global arguments */ |
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gargv = argv; |
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progname = gargv[0]; |
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/* set up rendering defaults */ |
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dstrsrc = 0.25; |
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directrelay = 3; |
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directvis = 0; |
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ambounce = 2; |
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/* get options from command line */ |
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for (i = 1; i < argc-1; i++) { |
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while ((rval = expandarg(&argc, &argv, i)) > 0) |
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; |
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if (rval < 0) { |
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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][0] != '-') |
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break; |
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if (!strcmp(argv[i], "-w")) { |
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warnings = 0; |
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continue; |
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} |
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if (!strcmp(argv[i], "-n")) { |
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nprocs = atoi(argv[++i]); |
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if (nprocs <= 0) |
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error(USER, "illegal number of processes"); |
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continue; |
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} |
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if (!strcmp(argv[i], "-defaults")) { |
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printopts(); |
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print_rdefaults(); |
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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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sprintf(errmsg, "bad render option at '%s'", argv[i]); |
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error(USER, errmsg); |
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} |
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i += rval; |
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} |
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gargc = ++i; |
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/* add "mandatory" render options */ |
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do_irrad = 0; |
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if (gargc > argc || argv[gargc-1][0] == '-') |
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error(USER, "missing octree argument"); |
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/* else initialize and run our calculation */ |
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init(argv[gargc-1], nprocs); |
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if (gargc < argc) { |
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if (gargc == argc-1 || argv[gargc][0] != '<' || argv[gargc][1]) |
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error(USER, "Use '< file1 file2 ..' for multiple inputs"); |
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for (i = gargc+1; i < argc; i++) { |
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if ((fp = fopen(argv[i], "r")) == NULL) { |
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sprintf(errmsg, |
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"cannot open scene file \"%s\"", argv[i]); |
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error(SYSTEM, errmsg); |
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} |
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filter(fp, argv[i]); |
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fclose(fp); |
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} |
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} else |
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filter(stdin, "standard input"); |
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quit(0); |
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return 0; /* pro forma return */ |
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} |
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|
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|
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void |
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init(char *octnm, int np) /* start rendering process(es) */ |
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{ |
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/* set up signal handling */ |
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signal(SIGINT, quit); |
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#ifdef SIGHUP |
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signal(SIGHUP, quit); |
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#endif |
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#ifdef SIGTERM |
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signal(SIGTERM, quit); |
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#endif |
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#ifdef SIGPIPE |
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signal(SIGPIPE, quit); |
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#endif |
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/* start rendering process(es) */ |
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ray_pinit(octnm, np); |
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} |
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|
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|
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void |
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eputs( /* put string to stderr */ |
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register char *s |
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) |
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{ |
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static int midline = 0; |
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|
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if (!*s) return; |
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if (!midline) { |
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fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
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fputs(s, stderr); |
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midline = s[strlen(s)-1] != '\n'; |
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} |
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|
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|
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void |
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wputs(s) /* print warning if enabled */ |
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char *s; |
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{ |
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if (warnings) |
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eputs(s); |
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} |
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|
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|
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void |
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filter( /* process stream */ |
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register FILE *infp, |
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char *name |
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) |
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{ |
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char buf[512]; |
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FILE *pfp; |
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register int c; |
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|
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while ((c = getc(infp)) != EOF) { |
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if (isspace(c)) |
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continue; |
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if (c == '#') { /* comment/options */ |
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buf[0] = c; |
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fgets(buf+1, sizeof(buf)-1, infp); |
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xoptions(buf, name); |
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} else if (c == '!') { /* command */ |
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buf[0] = c; |
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fgetline(buf+1, sizeof(buf)-1, infp); |
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if ((pfp = popen(buf+1, "r")) == NULL) { |
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sprintf(errmsg, "cannot execute \"%s\"", buf); |
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error(SYSTEM, errmsg); |
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} |
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filter(pfp, buf); |
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pclose(pfp); |
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} else { /* object */ |
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ungetc(c, infp); |
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xobject(infp, name); |
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} |
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} |
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} |
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|
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|
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void |
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xoptions( /* process options in string s */ |
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char *s, |
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char *nm |
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) |
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{ |
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extern FILE *freopen(); |
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char buf[64]; |
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int nerrs = 0; |
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register char *cp; |
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|
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if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
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fputs(s, stdout); /* not for us */ |
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return; |
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} |
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cp = s+10; |
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while (*cp) { |
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switch (*cp) { |
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case ' ': |
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case '\t': |
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case '\n': |
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case '\r': |
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case '\f': |
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cp++; |
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continue; |
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case 'm': /* material name */ |
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if (*++cp != '=') |
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break; |
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if (!*++cp || isspace(*cp)) |
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break; |
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atos(thisillum.matname, MAXSTR, cp); |
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cp = sskip(cp); |
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if (!(thisillum.flags & IL_DATCLB)) { |
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strcpy(thisillum.datafile, thisillum.matname); |
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thisillum.dfnum = 0; |
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} |
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continue; |
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case 'f': /* data file name */ |
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if (*++cp != '=') |
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break; |
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if (!*++cp || isspace(*cp)) { |
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strcpy(thisillum.datafile,thisillum.matname); |
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thisillum.dfnum = 0; |
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thisillum.flags &= ~IL_DATCLB; |
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continue; |
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} |
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atos(thisillum.datafile, MAXSTR, cp); |
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cp = sskip(cp); |
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thisillum.dfnum = 0; |
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thisillum.flags |= IL_DATCLB; |
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continue; |
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case 'i': /* include material */ |
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case 'e': /* exclude material */ |
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if (cp[1] != '=') |
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break; |
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matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
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cp += 2; |
268 |
atos(matcheck, MAXSTR, cp); |
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cp = sskip(cp); |
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continue; |
271 |
case 'a': /* use everything */ |
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cp = sskip(cp); |
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matselect = S_ALL; |
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continue; |
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case 'n': /* use nothing (passive) */ |
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cp = sskip(cp); |
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matselect = S_NONE; |
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continue; |
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case 'c': /* color calculation */ |
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if (*++cp != '=') |
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break; |
282 |
switch (*++cp) { |
283 |
case 'a': /* average */ |
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thisillum.flags = (thisillum.flags|IL_COLAVG) |
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& ~IL_COLDST; |
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break; |
287 |
case 'd': /* distribution */ |
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thisillum.flags |= (IL_COLDST|IL_COLAVG); |
289 |
break; |
290 |
case 'n': /* none */ |
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thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
292 |
break; |
293 |
default: |
294 |
goto opterr; |
295 |
} |
296 |
cp = sskip(cp); |
297 |
continue; |
298 |
case 'd': /* point sample density */ |
299 |
if (*++cp != '=') |
300 |
break; |
301 |
if (!isintd(++cp, " \t\n\r")) |
302 |
break; |
303 |
thisillum.sampdens = atoi(cp); |
304 |
cp = sskip(cp); |
305 |
continue; |
306 |
case 's': /* point super-samples */ |
307 |
if (*++cp != '=') |
308 |
break; |
309 |
if (!isintd(++cp, " \t\n\r")) |
310 |
break; |
311 |
thisillum.nsamps = atoi(cp); |
312 |
cp = sskip(cp); |
313 |
continue; |
314 |
case 'l': /* light sources */ |
315 |
cp++; |
316 |
if (*cp == '+') |
317 |
thisillum.flags |= IL_LIGHT; |
318 |
else if (*cp == '-') |
319 |
thisillum.flags &= ~IL_LIGHT; |
320 |
else |
321 |
break; |
322 |
cp++; |
323 |
continue; |
324 |
case 'b': /* brightness */ |
325 |
if (*++cp != '=') |
326 |
break; |
327 |
if (!isfltd(++cp, " \t\n\r")) |
328 |
break; |
329 |
thisillum.minbrt = atof(cp); |
330 |
if (thisillum.minbrt < 0.) |
331 |
thisillum.minbrt = 0.; |
332 |
cp = sskip(cp); |
333 |
continue; |
334 |
case 'o': /* output file */ |
335 |
if (*++cp != '=') |
336 |
break; |
337 |
if (!*++cp || isspace(*cp)) |
338 |
break; |
339 |
atos(buf, sizeof(buf), cp); |
340 |
cp = sskip(cp); |
341 |
if (freopen(buf, "w", stdout) == NULL) { |
342 |
sprintf(errmsg, |
343 |
"cannot open output file \"%s\"", buf); |
344 |
error(SYSTEM, errmsg); |
345 |
} |
346 |
doneheader = 0; |
347 |
continue; |
348 |
case '!': /* processed file! */ |
349 |
sprintf(errmsg, "(%s): already processed!", nm); |
350 |
error(WARNING, errmsg); |
351 |
matselect = S_NONE; |
352 |
return; |
353 |
} |
354 |
opterr: /* skip faulty option */ |
355 |
while (*cp && !isspace(*cp)) |
356 |
cp++; |
357 |
nerrs++; |
358 |
} |
359 |
/* print header? */ |
360 |
checkhead(); |
361 |
/* issue warnings? */ |
362 |
if (nerrs) { |
363 |
sprintf(errmsg, "(%s): %d error(s) in option line:", |
364 |
nm, nerrs); |
365 |
error(WARNING, errmsg); |
366 |
wputs(s); |
367 |
printf("# %s: the following option line has %d error(s):\n", |
368 |
progname, nerrs); |
369 |
} |
370 |
/* print pure comment */ |
371 |
printf("# %s", s+2); |
372 |
} |
373 |
|
374 |
void |
375 |
printopts(void) /* print out option default values */ |
376 |
{ |
377 |
printf("m=%-15s\t\t# material name\n", thisillum.matname); |
378 |
printf("f=%-15s\t\t# data file name\n", thisillum.datafile); |
379 |
if (thisillum.flags & IL_COLAVG) |
380 |
if (thisillum.flags & IL_COLDST) |
381 |
printf("c=d\t\t\t\t# color distribution\n"); |
382 |
else |
383 |
printf("c=a\t\t\t\t# color average\n"); |
384 |
else |
385 |
printf("c=n\t\t\t\t# color none\n"); |
386 |
if (thisillum.flags & IL_LIGHT) |
387 |
printf("l+\t\t\t\t# light type on\n"); |
388 |
else |
389 |
printf("l-\t\t\t\t# light type off\n"); |
390 |
printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens); |
391 |
printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps); |
392 |
printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt); |
393 |
} |
394 |
|
395 |
|
396 |
void |
397 |
printhead( /* print out header */ |
398 |
register int ac, |
399 |
register char **av |
400 |
) |
401 |
{ |
402 |
putchar('#'); |
403 |
while (ac-- > 0) { |
404 |
putchar(' '); |
405 |
fputs(*av++, stdout); |
406 |
} |
407 |
fputs("\n#@mkillum !\n", stdout); |
408 |
} |
409 |
|
410 |
|
411 |
void |
412 |
xobject( /* translate an object from fp */ |
413 |
FILE *fp, |
414 |
char *nm |
415 |
) |
416 |
{ |
417 |
OBJREC thisobj; |
418 |
char str[MAXSTR]; |
419 |
int doit; |
420 |
/* read the object */ |
421 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
422 |
goto readerr; |
423 |
if (fgetword(str, MAXSTR, fp) == NULL) |
424 |
goto readerr; |
425 |
/* is it an alias? */ |
426 |
if (!strcmp(str, ALIASKEY)) { |
427 |
if (fgetword(str, MAXSTR, fp) == NULL) |
428 |
goto readerr; |
429 |
printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str); |
430 |
if (fgetword(str, MAXSTR, fp) == NULL) |
431 |
goto readerr; |
432 |
printf("\t%s\n", str); |
433 |
return; |
434 |
} |
435 |
thisobj.omod = OVOID; /* unused field */ |
436 |
if ((thisobj.otype = otype(str)) < 0) { |
437 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
438 |
error(USER, errmsg); |
439 |
} |
440 |
if (fgetword(str, MAXSTR, fp) == NULL) |
441 |
goto readerr; |
442 |
thisobj.oname = str; |
443 |
if (readfargs(&thisobj.oargs, fp) != 1) |
444 |
goto readerr; |
445 |
thisobj.os = NULL; |
446 |
/* check for translation */ |
447 |
switch (matselect) { |
448 |
case S_NONE: |
449 |
doit = 0; |
450 |
break; |
451 |
case S_ALL: |
452 |
doit = 1; |
453 |
break; |
454 |
case S_ELEM: |
455 |
doit = !strcmp(thisillum.altmat, matcheck); |
456 |
break; |
457 |
case S_COMPL: |
458 |
doit = strcmp(thisillum.altmat, matcheck); |
459 |
break; |
460 |
} |
461 |
doit = doit && issurface(thisobj.otype); |
462 |
/* print header? */ |
463 |
checkhead(); |
464 |
/* process object */ |
465 |
if (doit) |
466 |
switch (thisobj.otype) { |
467 |
case OBJ_FACE: |
468 |
my_face(&thisobj, &thisillum, nm); |
469 |
break; |
470 |
case OBJ_SPHERE: |
471 |
my_sphere(&thisobj, &thisillum, nm); |
472 |
break; |
473 |
case OBJ_RING: |
474 |
my_ring(&thisobj, &thisillum, nm); |
475 |
break; |
476 |
default: |
477 |
my_default(&thisobj, &thisillum, nm); |
478 |
break; |
479 |
} |
480 |
else |
481 |
printobj(thisillum.altmat, &thisobj); |
482 |
/* free arguments */ |
483 |
freefargs(&thisobj.oargs); |
484 |
return; |
485 |
readerr: |
486 |
sprintf(errmsg, "(%s): error reading input", nm); |
487 |
error(USER, errmsg); |
488 |
} |