| 1 |
greg |
1.1 |
/* Copyright (c) 1987 Regents of the University of California */ |
| 2 |
|
|
|
| 3 |
|
|
#ifndef lint |
| 4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
|
|
#endif |
| 6 |
|
|
|
| 7 |
|
|
/* |
| 8 |
|
|
* genprism.c - generate a prism. |
| 9 |
|
|
* 2D vertices in the xy plane are given on the |
| 10 |
|
|
* command line or from a file. Their order together |
| 11 |
|
|
* with the extrude direction will determine surface |
| 12 |
|
|
* orientation. |
| 13 |
|
|
* |
| 14 |
|
|
* 8/24/87 |
| 15 |
|
|
*/ |
| 16 |
|
|
|
| 17 |
|
|
#include <stdio.h> |
| 18 |
|
|
|
| 19 |
greg |
2.3 |
#include <math.h> |
| 20 |
|
|
|
| 21 |
greg |
1.1 |
#include <ctype.h> |
| 22 |
|
|
|
| 23 |
|
|
#define MAXVERT 1024 /* maximum # vertices */ |
| 24 |
greg |
2.2 |
|
| 25 |
greg |
1.1 |
char *pmtype; /* material type */ |
| 26 |
|
|
char *pname; /* name */ |
| 27 |
|
|
|
| 28 |
|
|
double lvect[3] = {0.0, 0.0, 1.0}; |
| 29 |
|
|
|
| 30 |
|
|
double vert[MAXVERT][2]; |
| 31 |
|
|
int nverts = 0; |
| 32 |
|
|
|
| 33 |
|
|
int do_ends = 1; /* include end caps */ |
| 34 |
|
|
int iscomplete = 0; /* polygon is already completed */ |
| 35 |
|
|
|
| 36 |
|
|
|
| 37 |
|
|
main(argc, argv) |
| 38 |
|
|
int argc; |
| 39 |
|
|
char **argv; |
| 40 |
|
|
{ |
| 41 |
|
|
int an; |
| 42 |
|
|
|
| 43 |
|
|
if (argc < 4) |
| 44 |
|
|
goto userr; |
| 45 |
|
|
|
| 46 |
|
|
pmtype = argv[1]; |
| 47 |
|
|
pname = argv[2]; |
| 48 |
|
|
|
| 49 |
|
|
if (!strcmp(argv[3], "-")) { |
| 50 |
|
|
readverts(NULL); |
| 51 |
|
|
an = 4; |
| 52 |
|
|
} else if (isdigit(argv[3][0])) { |
| 53 |
|
|
nverts = atoi(argv[3]); |
| 54 |
|
|
if (argc-3 < 2*nverts) |
| 55 |
|
|
goto userr; |
| 56 |
|
|
for (an = 0; an < nverts; an++) { |
| 57 |
|
|
vert[an][0] = atof(argv[2*an+4]); |
| 58 |
|
|
vert[an][1] = atof(argv[2*an+5]); |
| 59 |
|
|
} |
| 60 |
|
|
an = 2*nverts+4; |
| 61 |
|
|
} else { |
| 62 |
|
|
readverts(argv[3]); |
| 63 |
|
|
an = 4; |
| 64 |
|
|
} |
| 65 |
|
|
if (nverts < 3) { |
| 66 |
|
|
fprintf(stderr, "%s: not enough vertices\n", argv[0]); |
| 67 |
|
|
exit(1); |
| 68 |
|
|
} |
| 69 |
|
|
|
| 70 |
|
|
for ( ; an < argc; an++) { |
| 71 |
|
|
if (argv[an][0] != '-') |
| 72 |
|
|
goto userr; |
| 73 |
|
|
switch (argv[an][1]) { |
| 74 |
|
|
case 'l': /* length vector */ |
| 75 |
|
|
lvect[0] = atof(argv[++an]); |
| 76 |
|
|
lvect[1] = atof(argv[++an]); |
| 77 |
|
|
lvect[2] = atof(argv[++an]); |
| 78 |
|
|
break; |
| 79 |
|
|
case 'e': /* ends */ |
| 80 |
|
|
do_ends = !do_ends; |
| 81 |
|
|
break; |
| 82 |
|
|
case 'c': /* complete */ |
| 83 |
|
|
iscomplete = !iscomplete; |
| 84 |
|
|
break; |
| 85 |
|
|
default: |
| 86 |
|
|
goto userr; |
| 87 |
|
|
} |
| 88 |
|
|
} |
| 89 |
|
|
|
| 90 |
|
|
printhead(argc, argv); |
| 91 |
|
|
|
| 92 |
|
|
if (do_ends) |
| 93 |
|
|
printends(); |
| 94 |
|
|
printsides(); |
| 95 |
|
|
|
| 96 |
|
|
return(0); |
| 97 |
|
|
userr: |
| 98 |
|
|
fprintf(stderr, "Usage: %s material name ", argv[0]); |
| 99 |
|
|
fprintf(stderr, "{ - | vfile | N v1 v2 .. vN } "); |
| 100 |
|
|
fprintf(stderr, "[-l lvect][-c][-e]\n"); |
| 101 |
|
|
exit(1); |
| 102 |
|
|
} |
| 103 |
|
|
|
| 104 |
|
|
|
| 105 |
|
|
readverts(fname) /* read vertices from a file */ |
| 106 |
greg |
1.2 |
char *fname; |
| 107 |
greg |
1.1 |
{ |
| 108 |
|
|
FILE *fp; |
| 109 |
|
|
|
| 110 |
|
|
if (fname == NULL) |
| 111 |
|
|
fp = stdin; |
| 112 |
|
|
else if ((fp = fopen(fname, "r")) == NULL) { |
| 113 |
|
|
fprintf(stderr, "%s: cannot open\n", fname); |
| 114 |
|
|
exit(1); |
| 115 |
|
|
} |
| 116 |
|
|
while (fscanf(fp, "%lf %lf", &vert[nverts][0], &vert[nverts][1]) == 2) |
| 117 |
|
|
nverts++; |
| 118 |
|
|
fclose(fp); |
| 119 |
|
|
} |
| 120 |
|
|
|
| 121 |
|
|
|
| 122 |
|
|
printends() /* print ends of prism */ |
| 123 |
|
|
{ |
| 124 |
|
|
register int i; |
| 125 |
|
|
|
| 126 |
|
|
printf("\n%s polygon %s.b\n", pmtype, pname); |
| 127 |
|
|
printf("0\n0\n%d\n", nverts*3); |
| 128 |
|
|
for (i = 0; i < nverts; i++) { |
| 129 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 130 |
|
|
vert[i][0], |
| 131 |
|
|
vert[i][1], |
| 132 |
|
|
0.0); |
| 133 |
|
|
} |
| 134 |
|
|
printf("\n%s polygon %s.e\n", pmtype, pname); |
| 135 |
|
|
printf("0\n0\n%d\n", nverts*3); |
| 136 |
|
|
for (i = nverts-1; i >= 0; i--) { |
| 137 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 138 |
|
|
vert[i][0]+lvect[0], |
| 139 |
|
|
vert[i][1]+lvect[1], |
| 140 |
|
|
lvect[2]); |
| 141 |
|
|
} |
| 142 |
|
|
} |
| 143 |
|
|
|
| 144 |
|
|
|
| 145 |
|
|
printsides() /* print prism sides */ |
| 146 |
|
|
{ |
| 147 |
|
|
register int i; |
| 148 |
|
|
|
| 149 |
|
|
for (i = 0; i < nverts-1; i++) |
| 150 |
|
|
side(i, i+1); |
| 151 |
|
|
if (!iscomplete) |
| 152 |
|
|
side(nverts-1, 0); |
| 153 |
|
|
} |
| 154 |
|
|
|
| 155 |
|
|
|
| 156 |
|
|
side(n1, n2) /* print single side */ |
| 157 |
|
|
register int n1, n2; |
| 158 |
|
|
{ |
| 159 |
|
|
printf("\n%s polygon %s.%d\n", pmtype, pname, n1+1); |
| 160 |
|
|
printf("0\n0\n12\n"); |
| 161 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 162 |
|
|
vert[n1][0], |
| 163 |
|
|
vert[n1][1], |
| 164 |
|
|
0.0); |
| 165 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 166 |
|
|
vert[n1][0]+lvect[0], |
| 167 |
|
|
vert[n1][1]+lvect[1], |
| 168 |
|
|
lvect[2]); |
| 169 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 170 |
|
|
vert[n2][0]+lvect[0], |
| 171 |
|
|
vert[n2][1]+lvect[1], |
| 172 |
|
|
lvect[2]); |
| 173 |
|
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
| 174 |
|
|
vert[n2][0], |
| 175 |
|
|
vert[n2][1], |
| 176 |
|
|
0.0); |
| 177 |
|
|
} |
| 178 |
|
|
|
| 179 |
|
|
|
| 180 |
|
|
printhead(ac, av) /* print command header */ |
| 181 |
|
|
register int ac; |
| 182 |
|
|
register char **av; |
| 183 |
|
|
{ |
| 184 |
|
|
putchar('#'); |
| 185 |
|
|
while (ac--) { |
| 186 |
|
|
putchar(' '); |
| 187 |
|
|
fputs(*av++, stdout); |
| 188 |
|
|
} |
| 189 |
|
|
putchar('\n'); |
| 190 |
|
|
} |
