| 1 | – | /* Copyright (c) 1989 Regents of the University of California */ | 
| 2 | – |  | 
| 1 |  | #ifndef lint | 
| 2 | < | static char SCCSid[] = "$SunId$ LBL"; | 
| 2 | > | static const char       RCSid[] = "$Id$"; | 
| 3 |  | #endif | 
| 6 | – |  | 
| 4 |  | /* | 
| 5 |  | *  genworm.c - program to generate worms (strings with varying thickness). | 
| 6 |  | * | 
| 11 |  | *      9/24/87 | 
| 12 |  | */ | 
| 13 |  |  | 
| 14 | + | #include  <stdlib.h> | 
| 15 |  | #include  <stdio.h> | 
| 16 | + | #include  <math.h> | 
| 17 | + | #include  <string.h> | 
| 18 |  |  | 
| 19 | + | #include  "calcomp.h" | 
| 20 | + | #include  "rtio.h" | 
| 21 | + | #include  "resolu.h" | 
| 22 | + | #include  "rterror.h" | 
| 23 |  | #include  "fvect.h" | 
| 24 |  |  | 
| 25 | < | #define  XNAME          "X_"                    /* x function name */ | 
| 26 | < | #define  YNAME          "Y_"                    /* y function name */ | 
| 27 | < | #define  ZNAME          "Z_"                    /* z function name */ | 
| 28 | < | #define  RNAME          "R_"                    /* r function name */ | 
| 25 | > | #define  XNAME          "X`SYS`"                /* x function name */ | 
| 26 | > | #define  YNAME          "Y`SYS`"                /* y function name */ | 
| 27 | > | #define  ZNAME          "Z`SYS`"                /* z function name */ | 
| 28 | > | #define  RNAME          "R`SYS`"                /* r function name */ | 
| 29 |  |  | 
| 30 |  | #define  PI             3.14159265358979323846 | 
| 31 |  |  | 
| 28 | – | #define  FTINY          1e-7 | 
| 29 | – |  | 
| 32 |  | #define  max(a,b)       ((a) > (b) ? (a) : (b)) | 
| 33 |  |  | 
| 34 |  |  | 
| 35 | < | double  funvalue(), l_hermite(), l_bezier(), argument(); | 
| 35 | > | /* XXX redundant, move to library */ | 
| 36 | > | double  l_hermite(char *), l_bezier(char *), l_bspline(char *); | 
| 37 |  |  | 
| 38 |  |  | 
| 39 | + | int | 
| 40 |  | main(argc, argv) | 
| 41 |  | int  argc; | 
| 42 |  | char  *argv[]; | 
| 43 |  | { | 
| 44 |  | char  stmp[256]; | 
| 45 | < | double  t, f, lastr, r; | 
| 45 | > | double  t, f, lastr = 0, r; | 
| 46 |  | FVECT  lastp, p; | 
| 47 |  | int  i, nseg; | 
| 48 |  |  | 
| 49 | < | varset("PI", PI, NULL); | 
| 50 | < | funset("hermite", 5, l_hermite); | 
| 51 | < | funset("bezier", 5, l_bezier); | 
| 49 | > | esupport |= E_VARIABLE|E_FUNCTION|E_RCONST; | 
| 50 | > | esupport &= ~(E_OUTCHAN|E_INCHAN); | 
| 51 | > | varset("PI", ':', PI); | 
| 52 | > | funset("hermite", 5, ':', l_hermite); | 
| 53 | > | funset("bezier", 5, ':', l_bezier); | 
| 54 | > | funset("bspline", 5, ':', l_bspline); | 
| 55 |  |  | 
| 56 |  | if (argc < 8) | 
| 57 |  | goto userror; | 
| 58 |  |  | 
| 59 |  | for (i = 8; i < argc; i++) | 
| 60 |  | if (!strcmp(argv[i], "-e")) | 
| 61 | < | scompile(NULL, argv[++i]); | 
| 62 | < | else if (!strcmp(argv[i], "-f")) | 
| 63 | < | fcompile(argv[++i]); | 
| 64 | < | else | 
| 61 | > | scompile(argv[++i], NULL, 0); | 
| 62 | > | else if (!strcmp(argv[i], "-f")) { | 
| 63 | > | char  *fpath = getpath(argv[++i], getrlibpath(), 0); | 
| 64 | > | if (fpath == NULL) { | 
| 65 | > | fprintf(stderr, "%s: cannot find file '%s'\n", | 
| 66 | > | argv[0], argv[i]); | 
| 67 | > | quit(1); | 
| 68 | > | } | 
| 69 | > | fcompile(fpath); | 
| 70 | > | } else | 
| 71 |  | goto userror; | 
| 72 |  |  | 
| 73 |  | sprintf(stmp, "%s(t)=%s;", XNAME, argv[3]); | 
| 74 | < | scompile(NULL, stmp); | 
| 74 | > | scompile(stmp, NULL, 0); | 
| 75 |  | sprintf(stmp, "%s(t)=%s;", YNAME, argv[4]); | 
| 76 | < | scompile(NULL, stmp); | 
| 76 | > | scompile(stmp, NULL, 0); | 
| 77 |  | sprintf(stmp, "%s(t)=%s;", ZNAME, argv[5]); | 
| 78 | < | scompile(NULL, stmp); | 
| 78 | > | scompile(stmp, NULL, 0); | 
| 79 |  | sprintf(stmp, "%s(t)=%s;", RNAME, argv[6]); | 
| 80 | < | scompile(NULL, stmp); | 
| 81 | < | nseg = atoi(argv[7]); | 
| 80 | > | scompile(stmp, NULL, 0); | 
| 81 | > | nseg = eval(argv[7]) + .5; | 
| 82 |  | if (nseg <= 0) | 
| 83 |  | goto userror; | 
| 84 |  |  | 
| 85 | < | printhead(argc, argv); | 
| 85 | > | fputs("# ", stdout); | 
| 86 | > | printargs(argc, argv, stdout); | 
| 87 | > | eclock = 0; | 
| 88 |  |  | 
| 89 |  | for (i = 0; i <= nseg; i++) { | 
| 90 |  | t = (double)i/nseg; | 
| 92 |  | p[1] = funvalue(YNAME, 1, &t); | 
| 93 |  | p[2] = funvalue(ZNAME, 1, &t); | 
| 94 |  | r = funvalue(RNAME, 1, &t); | 
| 95 | < | if (i) | 
| 95 | > | if (i) { | 
| 96 |  | if (lastr <= r+FTINY && lastr >= r-FTINY) { | 
| 97 |  | printf("\n%s cylinder %s.c%d\n", | 
| 98 |  | argv[1], argv[2], i); | 
| 119 |  | f = f <= 0.0 ? 0.0 : sqrt(f); | 
| 120 |  | printf("%18.12g %18.12g\n", f*lastr, f*r); | 
| 121 |  | } | 
| 122 | + | } | 
| 123 |  | printf("\n%s sphere %s.s%d\n", argv[1], argv[2], i); | 
| 124 |  | printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", | 
| 125 |  | p[0], p[1], p[2], r); | 
| 126 |  | VCOPY(lastp, p); | 
| 127 |  | lastr = r; | 
| 128 |  | } | 
| 129 | < | quit(0); | 
| 129 | > | return 0; | 
| 130 |  |  | 
| 131 |  | userror: | 
| 132 |  | fprintf(stderr, | 
| 133 |  | "Usage: %s material name x(t) y(t) z(t) r(t) nseg [-e expr] [-f file]\n", | 
| 134 |  | argv[0]); | 
| 135 | < | quit(1); | 
| 135 | > | return 1; | 
| 136 |  | } | 
| 137 |  |  | 
| 138 |  |  | 
| 123 | – | eputs(msg) | 
| 124 | – | char  *msg; | 
| 125 | – | { | 
| 126 | – | fputs(msg, stderr); | 
| 127 | – | } | 
| 128 | – |  | 
| 129 | – |  | 
| 130 | – | wputs(msg) | 
| 131 | – | char  *msg; | 
| 132 | – | { | 
| 133 | – | eputs(msg); | 
| 134 | – | } | 
| 135 | – |  | 
| 136 | – |  | 
| 137 | – | quit(code) | 
| 138 | – | { | 
| 139 | – | exit(code); | 
| 140 | – | } | 
| 141 | – |  | 
| 142 | – |  | 
| 143 | – | printhead(ac, av)               /* print command header */ | 
| 144 | – | register int  ac; | 
| 145 | – | register char  **av; | 
| 146 | – | { | 
| 147 | – | putchar('#'); | 
| 148 | – | while (ac--) { | 
| 149 | – | putchar(' '); | 
| 150 | – | fputs(*av++, stdout); | 
| 151 | – | } | 
| 152 | – | putchar('\n'); | 
| 153 | – | } | 
| 154 | – |  | 
| 155 | – |  | 
| 139 |  | double | 
| 140 | < | l_hermite() | 
| 140 | > | l_hermite(char *nm) | 
| 141 |  | { | 
| 142 |  | double  t; | 
| 143 |  |  | 
| 150 |  |  | 
| 151 |  |  | 
| 152 |  | double | 
| 153 | < | l_bezier() | 
| 153 | > | l_bezier(char *nm) | 
| 154 |  | { | 
| 155 |  | double  t; | 
| 156 |  |  | 
| 159 |  | argument(2) * 3.*t*(1.+t*(-2.+t)) + | 
| 160 |  | argument(3) * 3.*t*t*(1.-t) + | 
| 161 |  | argument(4) * t*t*t ); | 
| 162 | + | } | 
| 163 | + |  | 
| 164 | + |  | 
| 165 | + | double | 
| 166 | + | l_bspline(char *nm) | 
| 167 | + | { | 
| 168 | + | double  t; | 
| 169 | + |  | 
| 170 | + | t = argument(5); | 
| 171 | + | return( argument(1) * (1./6.+t*(-1./2.+t*(1./2.-1./6.*t))) + | 
| 172 | + | argument(2) * (2./3.+t*t*(-1.+1./2.*t)) + | 
| 173 | + | argument(3) * (1./6.+t*(1./2.+t*(1./2.-1./2.*t))) + | 
| 174 | + | argument(4) * (1./6.*t*t*t) ); | 
| 175 |  | } |