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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* xform.c - program to transform object files. |
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* Transformations must preserve aspect ratio. |
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* |
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* 10/19/85 |
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* 11/6/86 Finally added error checking! |
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*/ |
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|
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#include "standard.h" |
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|
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#include <ctype.h> |
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|
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#include "object.h" |
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|
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#include "otypes.h" |
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|
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int xac; /* global xform argument count */ |
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char **xav; /* global xform argument pointer */ |
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int xfa; /* start of xf arguments */ |
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|
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XF tot; /* total transformation */ |
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int reverse; /* boolean true if scene inverted */ |
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|
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int expand = 0; /* boolean true to expand commands */ |
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|
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char *newmod = NULL; /* new modifier for surfaces */ |
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|
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char *idprefix = NULL; /* prefix for object identifiers */ |
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|
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#define ALIAS NUMOTYPE /* put alias at end of array */ |
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|
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#define NUMTYPES (NUMOTYPE+1) /* total number of object types */ |
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|
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FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */ |
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|
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extern char *malloc(), *fgetword(); |
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|
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#define progname (xav[0]) |
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|
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|
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main(argc, argv) /* get transform options and transform file */ |
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int argc; |
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char *argv[]; |
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{ |
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FILE *fopen(); |
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FILE *fp; |
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int a; |
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/* check for array */ |
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for (a = 1; a < argc; a++) |
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if (!strcmp(argv[a], "-a")) |
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return(doarray(argc, argv, a)); |
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|
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initotypes(); |
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|
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'm': |
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if (argv[a][2] || a+1 >= argc) |
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break; |
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newmod = argv[++a]; |
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continue; |
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case 'n': |
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if (argv[a][2] || a+1 >= argc) |
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break; |
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idprefix = argv[++a]; |
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continue; |
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case 'e': |
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if (argv[a][2]) |
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break; |
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expand = 1; |
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continue; |
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} |
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break; |
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} |
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|
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xav = argv; |
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xfa = a; |
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|
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a += xf(&tot, argc-a, argv+a); |
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|
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if (reverse = tot.sca < 0.0) |
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tot.sca = -tot.sca; |
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|
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if (a < argc && argv[a][0] == '-') { |
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fprintf(stderr, "%s: command line error at '%s'\n", |
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argv[0], argv[a]); |
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exit(1); |
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} |
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|
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xac = a; |
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/* simple header */ |
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putchar('#'); |
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for (a = 0; a < xac; a++) |
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printf(" %s", xav[a]); |
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putchar('\n'); |
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/* transform input */ |
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if (xac == argc) |
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xform("standard input", stdin); |
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else |
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for (a = xac; a < argc; a++) { |
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if ((fp = fopen(argv[a], "r")) == NULL) { |
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fprintf(stderr, "%s: cannot open \"%s\"\n", |
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progname, argv[a]); |
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exit(1); |
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} |
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xform(argv[a], fp); |
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fclose(fp); |
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} |
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|
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return(0); |
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} |
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|
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|
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doarray(ac, av, ai) /* make array */ |
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char **av; |
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int ac, ai; |
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{ |
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char *newav[256], **avp; |
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char newid[128], repts[32]; |
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char *oldid = NULL; |
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int i, err; |
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|
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avp = newav+2; |
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avp[0] = av[0]; |
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for (i = 1; i < ac; i++) |
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if (!strcmp(av[i-1], "-n")) { |
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oldid = av[i]; |
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avp[i] = newid; |
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} else |
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avp[i] = av[i]; |
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avp[ai] = "-i"; |
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avp[ai+1] = repts; |
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avp[i] = NULL; |
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if (oldid == NULL) { |
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newav[0] = av[0]; |
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newav[1] = "-n"; |
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newav[2] = newid; |
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avp = newav; |
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ac += 2; |
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} |
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err = 0; |
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for (i = 0; i < atoi(av[ai+1]); i++) { |
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if (oldid == NULL) |
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sprintf(newid, "a%d", i); |
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else |
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sprintf(newid, "%s.%d", oldid, i); |
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sprintf(repts, "%d", i); |
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err |= main(ac, avp); |
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} |
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return(err); |
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} |
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|
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|
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xform(name, fin) /* transform stream by tot.xfm */ |
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char *name; |
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register FILE *fin; |
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{ |
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register int c; |
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|
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while ((c = getc(fin)) != EOF) { |
168 |
if (isspace(c)) /* blank */ |
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continue; |
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if (c == '#') { /* comment */ |
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putchar(c); |
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do { |
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if ((c = getc(fin)) == EOF) |
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return; |
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putchar(c); |
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} while (c != '\n'); |
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} else if (c == '!') { /* command */ |
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ungetc(c, fin); |
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xfcomm(name, fin); |
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} else { /* object */ |
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ungetc(c, fin); |
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xfobject(name, fin); |
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} |
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} |
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} |
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|
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|
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xfcomm(fname, fin) /* transform a command */ |
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FILE *fin; |
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{ |
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FILE *popen(); |
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char *fgetline(); |
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FILE *pin; |
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char buf[512]; |
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int i; |
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|
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fgetline(buf, sizeof(buf), fin); |
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if (expand) { |
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if (xac > 2) { |
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if ((pin = popen(buf+1, "r")) == NULL) { |
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fprintf(stderr, |
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"%s: (%s): cannot execute \"%s\"\n", |
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progname, fname, buf); |
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exit(1); |
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} |
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xform(buf, pin); |
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pclose(pin); |
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} else { |
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fflush(stdout); |
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system(buf+1); |
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} |
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} else { |
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printf("\n%s", buf); |
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if (xac > 1) { |
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printf(" | %s -e", xav[0]); |
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for (i = 1; i < xac; i++) |
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printf(" %s", xav[i]); |
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} |
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putchar('\n'); |
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} |
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} |
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|
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|
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xfobject(fname, fin) /* transform an object */ |
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char *fname; |
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FILE *fin; |
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{ |
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char typ[16], nam[MAXSTR]; |
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int fn; |
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/* modifier and type */ |
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strcpy(typ, "EOF"); |
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fgetword(nam, sizeof(nam), fin); |
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fgetword(typ, sizeof(typ), fin); |
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if ((fn = otype(typ)) < 0) { |
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fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n", |
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progname, fname, typ); |
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exit(1); |
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} |
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printf("\n%s %s ", newmod!=NULL && issurface(fn) ? newmod : nam, typ); |
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/* object name */ |
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fgetword(nam, sizeof(nam), fin); |
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if (idprefix != NULL && issurface(fn)) |
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printf("%s.%s\n", idprefix, nam); |
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else |
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printf("%s\n", nam); |
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/* transform arguments */ |
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if ((*ofun[fn].funp)(fin) < 0) { |
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fprintf(stderr, "%s: (%s): bad %s \"%s\"\n", |
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progname, fname, ofun[fn].funame, nam); |
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exit(1); |
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} |
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} |
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|
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|
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o_default(fin) /* pass on arguments unchanged */ |
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FILE *fin; |
257 |
{ |
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register int i; |
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FUNARGS fa; |
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|
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if (readfargs(&fa, fin) != 1) |
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return(-1); |
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/* string arguments */ |
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printf("%d", fa.nsargs); |
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for (i = 0; i < fa.nsargs; i++) |
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printf(" %s", fa.sarg[i]); |
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printf("\n"); |
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#ifdef IARGS |
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/* integer arguments */ |
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printf("%d", fa.niargs); |
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for (i = 0; i < fa.niargs; i++) |
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printf(" %d", fa.iarg[i]); |
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printf("\n"); |
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#else |
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printf("0\n"); |
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#endif |
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/* float arguments */ |
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printf("%d", fa.nfargs); |
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for (i = 0; i < fa.nfargs; i++) |
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printf(" %18.12g", fa.farg[i]); |
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printf("\n"); |
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freefargs(&fa); |
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return(0); |
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} |
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|
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|
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addxform(fin) /* add xf arguments to strings */ |
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FILE *fin; |
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{ |
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register int i; |
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FUNARGS fa; |
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|
293 |
if (readfargs(&fa, fin) != 1) |
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return(-1); |
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/* string arguments */ |
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printf("%d", fa.nsargs + xac-xfa); |
297 |
for (i = 0; i < fa.nsargs; i++) |
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printf(" %s", fa.sarg[i]); |
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for (i = xfa; i < xac; i++) /* add xf arguments */ |
300 |
printf(" %s", xav[i]); |
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printf("\n"); |
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#ifdef IARGS |
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/* integer arguments */ |
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printf("%d", fa.niargs); |
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for (i = 0; i < fa.niargs; i++) |
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printf(" %d", fa.iarg[i]); |
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printf("\n"); |
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#else |
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printf("0\n"); |
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#endif |
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/* float arguments */ |
312 |
printf("%d", fa.nfargs); |
313 |
for (i = 0; i < fa.nfargs; i++) |
314 |
printf(" %18.12g", fa.farg[i]); |
315 |
printf("\n"); |
316 |
freefargs(&fa); |
317 |
return(0); |
318 |
} |
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|
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|
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int |
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otype(ofname) /* get object function number from its name */ |
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register char *ofname; |
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{ |
325 |
register int i; |
326 |
|
327 |
for (i = 0; i < NUMTYPES; i++) |
328 |
if (!strcmp(ofun[i].funame, ofname)) |
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return(i); |
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|
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return(-1); /* not found */ |
332 |
} |
333 |
|
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|
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alias(fin) /* transfer alias */ |
336 |
FILE *fin; |
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{ |
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char aliasnm[MAXSTR]; |
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|
340 |
if (fgetword(aliasnm, MAXSTR, fin) == NULL) |
341 |
return(-1); |
342 |
printf("\t%s\n", aliasnm); |
343 |
return(0); |
344 |
} |
345 |
|
346 |
|
347 |
m_glow(fin) /* transform arguments for proximity light */ |
348 |
FILE *fin; |
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{ |
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FUNARGS fa; |
351 |
|
352 |
if (readfargs(&fa, fin) != 1) |
353 |
return(-1); |
354 |
if (fa.nsargs != 0 || fa.nfargs != 4) |
355 |
return(-1); |
356 |
printf("0\n0\n4"); |
357 |
printf(" %18.12g %18.12g %18.12g", |
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fa.farg[0], fa.farg[1], fa.farg[2]); |
359 |
printf(" %18.12g\n", fa.farg[3] * tot.sca); |
360 |
freefargs(&fa); |
361 |
return(0); |
362 |
} |
363 |
|
364 |
|
365 |
m_spot(fin) /* transform arguments for spotlight */ |
366 |
FILE *fin; |
367 |
{ |
368 |
double v[3]; |
369 |
FUNARGS fa; |
370 |
|
371 |
if (readfargs(&fa, fin) != 1) |
372 |
return(-1); |
373 |
if (fa.nsargs != 0 || fa.nfargs != 7) |
374 |
return(-1); |
375 |
printf("0\n0\n7"); |
376 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
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fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]); |
378 |
multv3(v, fa.farg+4, tot.xfm); |
379 |
printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
380 |
freefargs(&fa); |
381 |
return(0); |
382 |
} |
383 |
|
384 |
|
385 |
m_dielectric(fin) /* transform arguments for dielectric */ |
386 |
FILE *fin; |
387 |
{ |
388 |
double pow(); |
389 |
FUNARGS fa; |
390 |
|
391 |
if (readfargs(&fa, fin) != 1) |
392 |
return(-1); |
393 |
if (fa.nsargs != 0 || fa.nfargs != 5) |
394 |
return(-1); |
395 |
printf("0\n0\n5"); |
396 |
printf(" %18.12g %18.12g %18.12g", |
397 |
pow(fa.farg[0], 1.0/tot.sca), |
398 |
pow(fa.farg[1], 1.0/tot.sca), |
399 |
pow(fa.farg[2], 1.0/tot.sca)); |
400 |
printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]); |
401 |
freefargs(&fa); |
402 |
return(0); |
403 |
} |
404 |
|
405 |
|
406 |
m_interface(fin) /* transform arguments for interface */ |
407 |
FILE *fin; |
408 |
{ |
409 |
double pow(); |
410 |
FUNARGS fa; |
411 |
|
412 |
if (readfargs(&fa, fin) != 1) |
413 |
return(-1); |
414 |
if (fa.nsargs != 0 || fa.nfargs != 8) |
415 |
return(-1); |
416 |
printf("0\n0\n8\n"); |
417 |
printf("%18.12g %18.12g %18.12g", |
418 |
pow(fa.farg[0], 1.0/tot.sca), |
419 |
pow(fa.farg[1], 1.0/tot.sca), |
420 |
pow(fa.farg[2], 1.0/tot.sca)); |
421 |
printf(" %18.12g\n", fa.farg[3]); |
422 |
printf("%18.12g %18.12g %18.12g", |
423 |
pow(fa.farg[4], 1.0/tot.sca), |
424 |
pow(fa.farg[5], 1.0/tot.sca), |
425 |
pow(fa.farg[6], 1.0/tot.sca)); |
426 |
printf(" %18.12g\n", fa.farg[7]); |
427 |
freefargs(&fa); |
428 |
return(0); |
429 |
} |
430 |
|
431 |
|
432 |
text(fin) /* transform text arguments */ |
433 |
FILE *fin; |
434 |
{ |
435 |
int i; |
436 |
double v[3]; |
437 |
FUNARGS fa; |
438 |
|
439 |
if (readfargs(&fa, fin) != 1) |
440 |
return(-1); |
441 |
if (fa.nfargs != 9 && fa.nfargs != 11 && fa.nfargs != 15) |
442 |
return(-1); |
443 |
/* string arguments */ |
444 |
printf("%d", fa.nsargs); |
445 |
for (i = 0; i < fa.nsargs; i++) |
446 |
printf(" %s", fa.sarg[i]); |
447 |
printf("\n0\n%d\n", fa.nfargs); |
448 |
/* anchor point */ |
449 |
multp3(v, fa.farg, tot.xfm); |
450 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
451 |
/* right vector */ |
452 |
multv3(v, fa.farg+3, tot.xfm); |
453 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
454 |
/* down vector */ |
455 |
multv3(v, fa.farg+6, tot.xfm); |
456 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
457 |
/* forground and background */ |
458 |
if (fa.nfargs == 11) |
459 |
printf(" %18.12g %18.12g\n", fa.farg[9], fa.farg[10]); |
460 |
else if (fa.nfargs == 15) { |
461 |
printf(" %18.12g %18.12g %18.12g\n", |
462 |
fa.farg[9], fa.farg[10], fa.farg[11]); |
463 |
printf(" %18.12g %18.12g %18.12g\n", |
464 |
fa.farg[12], fa.farg[13], fa.farg[14]); |
465 |
} |
466 |
freefargs(&fa); |
467 |
return(0); |
468 |
} |
469 |
|
470 |
|
471 |
o_source(fin) /* transform source arguments */ |
472 |
FILE *fin; |
473 |
{ |
474 |
double dv[3]; |
475 |
FUNARGS fa; |
476 |
|
477 |
if (readfargs(&fa, fin) != 1) |
478 |
return(-1); |
479 |
if (fa.nsargs != 0 || fa.nfargs != 4) |
480 |
return(-1); |
481 |
/* transform direction vector */ |
482 |
multv3(dv, fa.farg, tot.xfm); |
483 |
/* output */ |
484 |
printf("0\n0\n4"); |
485 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
486 |
dv[0], dv[1], dv[2], fa.farg[3]); |
487 |
freefargs(&fa); |
488 |
return(0); |
489 |
} |
490 |
|
491 |
|
492 |
o_sphere(fin) /* transform sphere arguments */ |
493 |
FILE *fin; |
494 |
{ |
495 |
double cent[3], rad; |
496 |
FUNARGS fa; |
497 |
|
498 |
if (readfargs(&fa, fin) != 1) |
499 |
return(-1); |
500 |
if (fa.nsargs != 0 || fa.nfargs != 4) |
501 |
return(-1); |
502 |
|
503 |
multp3(cent, fa.farg, tot.xfm); /* transform center */ |
504 |
|
505 |
rad = fa.farg[3] * tot.sca; /* scale radius */ |
506 |
|
507 |
printf("0\n0\n4"); |
508 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
509 |
cent[0], cent[1], cent[2], rad); |
510 |
freefargs(&fa); |
511 |
return(0); |
512 |
} |
513 |
|
514 |
|
515 |
o_face(fin) /* transform face arguments */ |
516 |
FILE *fin; |
517 |
{ |
518 |
double p[3]; |
519 |
register int i; |
520 |
FUNARGS fa; |
521 |
|
522 |
if (readfargs(&fa, fin) != 1) |
523 |
return(-1); |
524 |
if (fa.nsargs != 0 || fa.nfargs % 3) |
525 |
return(-1); |
526 |
|
527 |
printf("0\n0\n%d\n", fa.nfargs); |
528 |
|
529 |
for (i = 0; i < fa.nfargs; i += 3) { |
530 |
if (reverse) |
531 |
multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm); |
532 |
else |
533 |
multp3(p, fa.farg+i, tot.xfm); |
534 |
printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]); |
535 |
} |
536 |
freefargs(&fa); |
537 |
return(0); |
538 |
} |
539 |
|
540 |
|
541 |
o_cone(fin) /* transform cone and cup arguments */ |
542 |
FILE *fin; |
543 |
{ |
544 |
double p0[3], p1[3], r0, r1; |
545 |
FUNARGS fa; |
546 |
|
547 |
if (readfargs(&fa, fin) != 1) |
548 |
return(-1); |
549 |
if (fa.nsargs != 0 || fa.nfargs != 8) |
550 |
return(-1); |
551 |
|
552 |
printf("0\n0\n8\n"); |
553 |
|
554 |
multp3(p0, fa.farg, tot.xfm); |
555 |
multp3(p1, fa.farg+3, tot.xfm); |
556 |
r0 = fa.farg[6] * tot.sca; |
557 |
r1 = fa.farg[7] * tot.sca; |
558 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
559 |
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
560 |
printf(" %18.12g %18.12g\n", r0, r1); |
561 |
|
562 |
freefargs(&fa); |
563 |
return(0); |
564 |
} |
565 |
|
566 |
|
567 |
o_cylinder(fin) /* transform cylinder and tube arguments */ |
568 |
FILE *fin; |
569 |
{ |
570 |
double p0[3], p1[3], rad; |
571 |
FUNARGS fa; |
572 |
|
573 |
if (readfargs(&fa, fin) != 1) |
574 |
return(-1); |
575 |
if (fa.nsargs != 0 || fa.nfargs != 7) |
576 |
return(-1); |
577 |
|
578 |
printf("0\n0\n7\n"); |
579 |
|
580 |
multp3(p0, fa.farg, tot.xfm); |
581 |
multp3(p1, fa.farg+3, tot.xfm); |
582 |
rad = fa.farg[6] * tot.sca; |
583 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
584 |
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
585 |
printf(" %18.12g\n", rad); |
586 |
freefargs(&fa); |
587 |
return(0); |
588 |
} |
589 |
|
590 |
|
591 |
o_ring(fin) /* transform ring arguments */ |
592 |
FILE *fin; |
593 |
{ |
594 |
double p0[3], pd[3], r0, r1; |
595 |
FUNARGS fa; |
596 |
|
597 |
if (readfargs(&fa, fin) != 1) |
598 |
return(-1); |
599 |
if (fa.nsargs != 0 || fa.nfargs != 8) |
600 |
return(-1); |
601 |
|
602 |
printf("0\n0\n8\n"); |
603 |
|
604 |
multp3(p0, fa.farg, tot.xfm); |
605 |
multv3(pd, fa.farg+3, tot.xfm); |
606 |
r0 = fa.farg[6] * tot.sca; |
607 |
r1 = fa.farg[7] * tot.sca; |
608 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
609 |
printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]); |
610 |
printf(" %18.12g %18.12g\n", r0, r1); |
611 |
freefargs(&fa); |
612 |
return(0); |
613 |
} |
614 |
|
615 |
|
616 |
initotypes() /* initialize ofun[] array */ |
617 |
{ |
618 |
extern int o_source(); |
619 |
extern int o_sphere(); |
620 |
extern int o_face(); |
621 |
extern int o_cone(); |
622 |
extern int o_cylinder(); |
623 |
extern int o_ring(); |
624 |
extern int m_glow(); |
625 |
extern int m_spot(); |
626 |
extern int m_dielectric(); |
627 |
extern int m_interface(); |
628 |
extern int text(); |
629 |
extern int alias(); |
630 |
extern int passargs(); |
631 |
extern int addxform(); |
632 |
register int i; |
633 |
|
634 |
if (ofun[OBJ_SOURCE].funp == o_source) |
635 |
return; /* done already */ |
636 |
/* alias is additional */ |
637 |
ofun[ALIAS].funame = ALIASID; |
638 |
ofun[ALIAS].flags = 0; |
639 |
/* functions get new transform */ |
640 |
for (i = 0; i < NUMTYPES; i++) |
641 |
if (hasfunc(i)) |
642 |
ofun[i].funp = addxform; |
643 |
/* special cases */ |
644 |
ofun[OBJ_SOURCE].funp = o_source; |
645 |
ofun[OBJ_SPHERE].funp = |
646 |
ofun[OBJ_BUBBLE].funp = o_sphere; |
647 |
ofun[OBJ_FACE].funp = o_face; |
648 |
ofun[OBJ_CONE].funp = |
649 |
ofun[OBJ_CUP].funp = o_cone; |
650 |
ofun[OBJ_CYLINDER].funp = |
651 |
ofun[OBJ_TUBE].funp = o_cylinder; |
652 |
ofun[OBJ_RING].funp = o_ring; |
653 |
ofun[OBJ_INSTANCE].funp = addxform; |
654 |
ofun[MAT_GLOW].funp = m_glow; |
655 |
ofun[MAT_SPOT].funp = m_spot; |
656 |
ofun[MAT_DIELECTRIC].funp = m_dielectric; |
657 |
ofun[MAT_INTERFACE].funp = m_interface; |
658 |
ofun[PAT_CTEXT].funp = |
659 |
ofun[PAT_BTEXT].funp = |
660 |
ofun[MIX_TEXT].funp = text; |
661 |
ofun[ALIAS].funp = alias; |
662 |
} |