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/* Copyright (c) 1986 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 <stdio.h> |
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|
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#include <ctype.h> |
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|
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|
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typedef struct { |
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char *funame; /* function name */ |
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int (*funp)(); /* pointer to function */ |
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} FUN; |
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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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double totxform[4][4]; /* total transformation matrix */ |
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double totscale; /* total scale factor */ |
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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 *idprefix = NULL; /* prefix for object identifiers */ |
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|
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extern int o_source(); |
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extern int o_sphere(); |
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extern int o_face(); |
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extern int o_cone(); |
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extern int o_cylinder(); |
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extern int o_ring(); |
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extern int m_glow(); |
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extern int m_spot(); |
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extern int m_dielectric(); |
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extern int m_interface(); |
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extern int text(); |
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extern int alias(); |
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extern int passargs(); |
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extern int addxform(); |
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|
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FUN ofun[] = { |
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{ "source", o_source }, |
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{ "sphere", o_sphere }, |
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{ "bubble", o_sphere }, |
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{ "polygon", o_face }, |
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{ "cone", o_cone }, |
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{ "cup", o_cone }, |
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{ "cylinder", o_cylinder }, |
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{ "tube", o_cylinder }, |
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{ "ring", o_ring }, |
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{ "instance", addxform }, |
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{ "alias", alias }, |
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{ "antimatter", passargs }, |
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{ "glow", m_glow }, |
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{ "spotlight", m_spot }, |
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{ "dielectric", m_dielectric }, |
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{ "interface", m_interface }, |
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{ "colortext", text }, |
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{ "brighttext", text }, |
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{ "texfunc", addxform }, |
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{ "texdata", addxform }, |
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{ "colorfunc", addxform }, |
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{ "brightfunc", addxform }, |
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{ "colorpict", addxform }, |
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{ "colordata", addxform }, |
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{ "brightdata", addxform }, |
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{ "mixfunc", addxform }, |
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{ "mixdata", addxform }, |
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{ "mixtext", text }, |
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{ "light", passargs }, |
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{ "illum", passargs }, |
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{ "plastic", passargs }, |
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{ "metal", passargs }, |
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{ "trans", passargs }, |
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{ "glass", passargs }, |
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{ 0 } /* terminator */ |
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}; |
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|
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#define issurface(t) ((t)<=9) |
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|
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typedef struct { |
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short nsargs; /* # of string arguments */ |
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char **sarg; /* string arguments */ |
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short niargs; /* # of integer arguments */ |
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int *iarg; /* integer arguments */ |
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short nfargs; /* # of float arguments */ |
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double *farg; /* float arguments */ |
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} FUNARGS; |
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|
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#define MAXSTR 512 /* maximum string length */ |
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|
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FUNARGS *getfargs(); |
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char *malloc(); |
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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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|
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xav = argv; |
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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 'n': |
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idprefix = argv[++a]; |
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continue; |
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case 'e': |
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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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xfa = a; |
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|
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totscale = 1.0; |
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setident4(totxform); |
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|
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a += xf(totxform, &totscale, argc-a, argv+a); |
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|
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if (reverse = totscale < 0.0) |
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totscale = -totscale; |
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|
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xac = a; |
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|
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putchar('#'); /* simple header */ |
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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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|
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if (a == argc) |
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xform("standard input", stdin); |
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else |
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for ( ; 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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exit(0); |
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} |
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|
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|
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xform(name, fin) /* transform stream by totxform */ |
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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) { |
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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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if (expand) |
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xfcomm(name, fin); |
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else { |
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putchar('\n'); |
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while ((c = getc(fin)) != EOF && c != '\n') |
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putchar(c); |
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printf(" |"); |
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for (c = 0; c < xac; c++) |
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printf(" %s", xav[c]); |
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putchar('\n'); |
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} |
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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) /* expand a command */ |
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FILE *fin; |
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{ |
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FILE *popen(); |
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char *fgets(); |
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FILE *pin; |
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char buf[512]; |
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|
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fgets(buf, sizeof(buf), fin); |
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if (buf[strlen(buf)-1] == '\n') |
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buf[strlen(buf)-1] = '\0'; |
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if ((pin = popen(buf+1, "r")) == NULL) { |
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fprintf(stderr, "%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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} |
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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 stmp[MAXSTR]; |
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int fn; |
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|
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fscanf(fin, "%s", stmp); /* modifier */ |
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printf("\n%s ", stmp); |
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fscanf(fin, "%s", stmp); /* object type */ |
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if ((fn = otype(stmp)) < 0) { |
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fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n", |
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progname, fname, stmp); |
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exit(1); |
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} |
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printf("%s ", stmp); |
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fscanf(fin, "%s", stmp); /* object name */ |
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if (idprefix != NULL && issurface(fn)) |
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printf("%s.%s\n", idprefix, stmp); |
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else |
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printf("%s\n", stmp); |
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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, stmp); |
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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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passargs(fin) /* pass on arguments unchanged */ |
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FILE *fin; |
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{ |
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register int i; |
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register FUNARGS *fa; |
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|
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if ((fa = getfargs(fin)) == NULL) |
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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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/* 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]); |
271 |
printf("\n"); |
272 |
/* float arguments */ |
273 |
printf("%d", fa->nfargs); |
274 |
for (i = 0; i < fa->nfargs; i++) |
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printf(" %18.12g", fa->farg[i]); |
276 |
printf("\n"); |
277 |
freefargs(fa); |
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return(0); |
279 |
} |
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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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register FUNARGS *fa; |
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|
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if ((fa = getfargs(fin)) == NULL) |
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return(-1); |
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/* string arguments */ |
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printf("%d", fa->nsargs + xac-xfa); |
292 |
for (i = 0; i < fa->nsargs; i++) |
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printf(" %s", fa->sarg[i]); |
294 |
for (i = xfa; i < xac; i++) /* add xf arguments */ |
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printf(" %s", xav[i]); |
296 |
printf("\n"); |
297 |
/* integer arguments */ |
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printf("%d", fa->niargs); |
299 |
for (i = 0; i < fa->niargs; i++) |
300 |
printf(" %d", fa->iarg[i]); |
301 |
printf("\n"); |
302 |
/* float arguments */ |
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printf("%d", fa->nfargs); |
304 |
for (i = 0; i < fa->nfargs; i++) |
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printf(" %18.12g", fa->farg[i]); |
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printf("\n"); |
307 |
freefargs(fa); |
308 |
return(0); |
309 |
} |
310 |
|
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|
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int |
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otype(ofname) /* get object function number from its name */ |
314 |
register char *ofname; |
315 |
{ |
316 |
register int i; |
317 |
|
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for (i = 0; ofun[i].funame != NULL; i++) |
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if (!strcmp(ofun[i].funame, ofname)) |
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return(i); |
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|
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return(-1); /* not found */ |
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} |
324 |
|
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|
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alias(fin) /* transfer alias */ |
327 |
FILE *fin; |
328 |
{ |
329 |
char alias[MAXSTR]; |
330 |
|
331 |
if (fscanf(fin, "%s", alias) != 1) |
332 |
return(-1); |
333 |
printf("\t%s\n", alias); |
334 |
return(0); |
335 |
} |
336 |
|
337 |
|
338 |
m_glow(fin) /* transform arguments for proximity light */ |
339 |
FILE *fin; |
340 |
{ |
341 |
register FUNARGS *fa; |
342 |
|
343 |
if ((fa = getfargs(fin)) == NULL) |
344 |
return(-1); |
345 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
346 |
return(-1); |
347 |
printf("0\n0\n4"); |
348 |
printf(" %18.12g %18.12g %18.12g", |
349 |
fa->farg[0], fa->farg[1], fa->farg[2]); |
350 |
printf(" %18.12g\n", fa->farg[3] * totscale); |
351 |
freefargs(fa); |
352 |
return(0); |
353 |
} |
354 |
|
355 |
|
356 |
m_spot(fin) /* transform arguments for spotlight */ |
357 |
FILE *fin; |
358 |
{ |
359 |
double v[3]; |
360 |
register FUNARGS *fa; |
361 |
|
362 |
if ((fa = getfargs(fin)) == NULL) |
363 |
return(-1); |
364 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
365 |
return(-1); |
366 |
printf("0\n0\n7"); |
367 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
368 |
fa->farg[0], fa->farg[1], fa->farg[2], fa->farg[3]); |
369 |
multv3(v, fa->farg+4, totxform); |
370 |
printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
371 |
freefargs(fa); |
372 |
return(0); |
373 |
} |
374 |
|
375 |
|
376 |
m_dielectric(fin) /* transform arguments for dielectric */ |
377 |
FILE *fin; |
378 |
{ |
379 |
double pow(); |
380 |
register FUNARGS *fa; |
381 |
|
382 |
if ((fa = getfargs(fin)) == NULL) |
383 |
return(-1); |
384 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 5) |
385 |
return(-1); |
386 |
printf("0\n0\n5"); |
387 |
printf(" %18.12g %18.12g %18.12g", |
388 |
pow(fa->farg[0], 1.0/totscale), |
389 |
pow(fa->farg[1], 1.0/totscale), |
390 |
pow(fa->farg[2], 1.0/totscale)); |
391 |
printf(" %18.12g %18.12g\n", fa->farg[3], fa->farg[4]); |
392 |
freefargs(fa); |
393 |
return(0); |
394 |
} |
395 |
|
396 |
|
397 |
m_interface(fin) /* transform arguments for interface */ |
398 |
FILE *fin; |
399 |
{ |
400 |
double pow(); |
401 |
register FUNARGS *fa; |
402 |
|
403 |
if ((fa = getfargs(fin)) == NULL) |
404 |
return(-1); |
405 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
406 |
return(-1); |
407 |
printf("0\n0\n8\n"); |
408 |
printf("%18.12g %18.12g %18.12g", |
409 |
pow(fa->farg[0], 1.0/totscale), |
410 |
pow(fa->farg[1], 1.0/totscale), |
411 |
pow(fa->farg[2], 1.0/totscale)); |
412 |
printf(" %18.12g\n", fa->farg[3]); |
413 |
printf("%18.12g %18.12g %18.12g", |
414 |
pow(fa->farg[4], 1.0/totscale), |
415 |
pow(fa->farg[5], 1.0/totscale), |
416 |
pow(fa->farg[6], 1.0/totscale)); |
417 |
printf(" %18.12g\n", fa->farg[7]); |
418 |
freefargs(fa); |
419 |
return(0); |
420 |
} |
421 |
|
422 |
|
423 |
text(fin) /* transform text arguments */ |
424 |
FILE *fin; |
425 |
{ |
426 |
int i; |
427 |
double v[3]; |
428 |
register FUNARGS *fa; |
429 |
|
430 |
if ((fa = getfargs(fin)) == NULL) |
431 |
return(-1); |
432 |
if (fa->niargs != 0 || (fa->nfargs != 9 && |
433 |
fa->nfargs != 11 && fa->nfargs != 15)) |
434 |
return(-1); |
435 |
/* string arguments */ |
436 |
printf("%d", fa->nsargs); |
437 |
for (i = 0; i < fa->nsargs; i++) |
438 |
printf(" %s", fa->sarg[i]); |
439 |
printf("\n0\n%d\n", fa->nfargs); |
440 |
/* anchor point */ |
441 |
multp3(v, fa->farg, totxform); |
442 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
443 |
/* right vector */ |
444 |
multv3(v, fa->farg+3, totxform); |
445 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
446 |
/* down vector */ |
447 |
multv3(v, fa->farg+6, totxform); |
448 |
printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]); |
449 |
/* forground and background */ |
450 |
if (fa->nfargs == 11) |
451 |
printf(" %18.12g %18.12g\n", fa->farg[9], fa->farg[10]); |
452 |
else if (fa->nfargs == 15) { |
453 |
printf(" %18.12g %18.12g %18.12g\n", |
454 |
fa->farg[9], fa->farg[10], fa->farg[11]); |
455 |
printf(" %18.12g %18.12g %18.12g\n", |
456 |
fa->farg[12], fa->farg[13], fa->farg[14]); |
457 |
} |
458 |
freefargs(fa); |
459 |
return(0); |
460 |
} |
461 |
|
462 |
|
463 |
o_source(fin) /* transform source arguments */ |
464 |
FILE *fin; |
465 |
{ |
466 |
double dv[3]; |
467 |
register FUNARGS *fa; |
468 |
|
469 |
if ((fa = getfargs(fin)) == NULL) |
470 |
return(-1); |
471 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
472 |
return(-1); |
473 |
/* transform direction vector */ |
474 |
multv3(dv, fa->farg, totxform); |
475 |
/* output */ |
476 |
printf("0\n0\n4"); |
477 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
478 |
dv[0], dv[1], dv[2], fa->farg[3]); |
479 |
freefargs(fa); |
480 |
return(0); |
481 |
} |
482 |
|
483 |
|
484 |
o_sphere(fin) /* transform sphere arguments */ |
485 |
FILE *fin; |
486 |
{ |
487 |
double cent[3], rad; |
488 |
register FUNARGS *fa; |
489 |
|
490 |
if ((fa = getfargs(fin)) == NULL) |
491 |
return(-1); |
492 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 4) |
493 |
return(-1); |
494 |
|
495 |
multp3(cent, fa->farg, totxform); /* transform center */ |
496 |
|
497 |
rad = fa->farg[3] * totscale; /* scale radius */ |
498 |
|
499 |
printf("0\n0\n4"); |
500 |
printf(" %18.12g %18.12g %18.12g %18.12g\n", |
501 |
cent[0], cent[1], cent[2], rad); |
502 |
freefargs(fa); |
503 |
return(0); |
504 |
} |
505 |
|
506 |
|
507 |
o_face(fin) /* transform face arguments */ |
508 |
FILE *fin; |
509 |
{ |
510 |
double p[3]; |
511 |
register int i; |
512 |
register FUNARGS *fa; |
513 |
|
514 |
if ((fa = getfargs(fin)) == NULL) |
515 |
return(-1); |
516 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs % 3) |
517 |
return(-1); |
518 |
|
519 |
printf("0\n0\n%d\n", fa->nfargs); |
520 |
|
521 |
for (i = 0; i < fa->nfargs; i += 3) { |
522 |
if (reverse) |
523 |
multp3(p, fa->farg+(fa->nfargs-i-3), totxform); |
524 |
else |
525 |
multp3(p, fa->farg+i, totxform); |
526 |
printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]); |
527 |
} |
528 |
freefargs(fa); |
529 |
return(0); |
530 |
} |
531 |
|
532 |
|
533 |
o_cone(fin) /* transform cone and cup arguments */ |
534 |
FILE *fin; |
535 |
{ |
536 |
double p0[3], p1[3], r0, r1; |
537 |
register FUNARGS *fa; |
538 |
|
539 |
if ((fa = getfargs(fin)) == NULL) |
540 |
return(-1); |
541 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
542 |
return(-1); |
543 |
|
544 |
printf("0\n0\n8\n"); |
545 |
|
546 |
multp3(p0, fa->farg, totxform); |
547 |
multp3(p1, fa->farg+3, totxform); |
548 |
r0 = fa->farg[6] * totscale; |
549 |
r1 = fa->farg[7] * totscale; |
550 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
551 |
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
552 |
printf(" %18.12g %18.12g\n", r0, r1); |
553 |
|
554 |
freefargs(fa); |
555 |
return(0); |
556 |
} |
557 |
|
558 |
|
559 |
o_cylinder(fin) /* transform cylinder and tube arguments */ |
560 |
FILE *fin; |
561 |
{ |
562 |
double p0[3], p1[3], rad; |
563 |
register FUNARGS *fa; |
564 |
|
565 |
if ((fa = getfargs(fin)) == NULL) |
566 |
return(-1); |
567 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 7) |
568 |
return(-1); |
569 |
|
570 |
printf("0\n0\n7\n"); |
571 |
|
572 |
multp3(p0, fa->farg, totxform); |
573 |
multp3(p1, fa->farg+3, totxform); |
574 |
rad = fa->farg[6] * totscale; |
575 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
576 |
printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]); |
577 |
printf(" %18.12g\n", rad); |
578 |
freefargs(fa); |
579 |
return(0); |
580 |
} |
581 |
|
582 |
|
583 |
o_ring(fin) /* transform ring arguments */ |
584 |
FILE *fin; |
585 |
{ |
586 |
double p0[3], pd[3], r0, r1; |
587 |
register FUNARGS *fa; |
588 |
|
589 |
if ((fa = getfargs(fin)) == NULL) |
590 |
return(-1); |
591 |
if (fa->nsargs != 0 || fa->niargs != 0 || fa->nfargs != 8) |
592 |
return(-1); |
593 |
|
594 |
printf("0\n0\n8\n"); |
595 |
|
596 |
multp3(p0, fa->farg, totxform); |
597 |
multv3(pd, fa->farg+3, totxform); |
598 |
r0 = fa->farg[6] * totscale; |
599 |
r1 = fa->farg[7] * totscale; |
600 |
printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]); |
601 |
printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]); |
602 |
printf(" %18.12g %18.12g\n", r0, r1); |
603 |
freefargs(fa); |
604 |
return(0); |
605 |
} |
606 |
|
607 |
|
608 |
FUNARGS * |
609 |
getfargs(fp) /* get function arguments from stream */ |
610 |
FILE *fp; |
611 |
{ |
612 |
char *strcpy(); |
613 |
char sbuf[MAXSTR]; |
614 |
int n; |
615 |
register FUNARGS *fa; |
616 |
register int i; |
617 |
|
618 |
if ((fa = (FUNARGS *)malloc((unsigned)sizeof(FUNARGS))) == NULL) |
619 |
goto memerr; |
620 |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
621 |
return(NULL); |
622 |
if (fa->nsargs = n) { |
623 |
fa->sarg = (char **)malloc((unsigned)fa->nsargs*sizeof(char *)); |
624 |
if (fa->sarg == NULL) |
625 |
goto memerr; |
626 |
for (i = 0; i < fa->nsargs; i++) { |
627 |
if (fscanf(fp, "%s", sbuf) != 1) |
628 |
return(NULL); |
629 |
if ((fa->sarg[i] = malloc((unsigned)strlen(sbuf)+1)) == NULL) |
630 |
goto memerr; |
631 |
strcpy(fa->sarg[i], sbuf); |
632 |
} |
633 |
} else |
634 |
fa->sarg = NULL; |
635 |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
636 |
return(NULL); |
637 |
if (fa->niargs = n) { |
638 |
fa->iarg = (int *)malloc((unsigned)fa->niargs*sizeof(int)); |
639 |
if (fa->iarg == NULL) |
640 |
goto memerr; |
641 |
for (i = 0; i < fa->niargs; i++) |
642 |
if (fscanf(fp, "%d", &fa->iarg[i]) != 1) |
643 |
return(NULL); |
644 |
} else |
645 |
fa->iarg = NULL; |
646 |
if (fscanf(fp, "%d", &n) != 1 || n < 0) |
647 |
return(NULL); |
648 |
if (fa->nfargs = n) { |
649 |
fa->farg = (double *)malloc((unsigned)fa->nfargs*sizeof(double)); |
650 |
if (fa->farg == NULL) |
651 |
goto memerr; |
652 |
for (i = 0; i < fa->nfargs; i++) |
653 |
if (fscanf(fp, "%lf", &fa->farg[i]) != 1) |
654 |
return(NULL); |
655 |
} else |
656 |
fa->farg = NULL; |
657 |
return(fa); |
658 |
memerr: |
659 |
fprintf(stderr, "%s: out of memory in getfargs\n", progname); |
660 |
exit(1); |
661 |
} |
662 |
|
663 |
|
664 |
freefargs(fa) /* free memory associated with fa */ |
665 |
register FUNARGS *fa; |
666 |
{ |
667 |
register int i; |
668 |
|
669 |
for (i = 0; i < fa->nsargs; i++) |
670 |
free(fa->sarg[i]); |
671 |
if (fa->nsargs) |
672 |
free(fa->sarg); |
673 |
if (fa->niargs) |
674 |
free(fa->iarg); |
675 |
if (fa->nfargs) |
676 |
free(fa->farg); |
677 |
free(fa); |
678 |
} |