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/* Copyright (c) 1996 Regents of the University of California */ |
2 |
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|
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
5 |
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* genprism.c - generate a prism. |
6 |
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* 2D vertices in the xy plane are given on the |
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*/ |
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#include <stdio.h> |
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13 |
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#include <string.h> |
14 |
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#include <stdlib.h> |
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#include <math.h> |
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|
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#include <ctype.h> |
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|
18 |
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#define MAXVERT 1024 /* maximum # vertices */ |
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#define FTINY 1e-6 |
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|
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#ifdef DCL_ATOF |
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extern double atof(); |
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#endif |
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|
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char *pmtype; /* material type */ |
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char *pname; /* name */ |
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|
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double lvect[3] = {0.0, 0.0, 1.0}; |
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int lvdir = 1; |
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double llen = 1.0; |
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|
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double vert[MAXVERT][2]; |
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int do_ends = 1; /* include end caps */ |
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int iscomplete = 0; /* polygon is already completed */ |
37 |
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double crad = 0.0; /* radius for corners */ |
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double crad = 0.0; /* radius for corners (sign from lvdir) */ |
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|
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#define rounding (crad > FTINY) |
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static double compute_rounding(void); |
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42 |
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main(argc, argv) |
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int argc; |
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char **argv; |
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{ |
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int an; |
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|
54 |
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if (argc < 4) |
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goto userr; |
56 |
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|
57 |
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pmtype = argv[1]; |
58 |
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pname = argv[2]; |
59 |
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|
60 |
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if (!strcmp(argv[3], "-")) { |
61 |
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readverts(NULL); |
62 |
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an = 4; |
63 |
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} else if (isdigit(argv[3][0])) { |
64 |
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nverts = atoi(argv[3]); |
65 |
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if (argc-3 < 2*nverts) |
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goto userr; |
67 |
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for (an = 0; an < nverts; an++) { |
68 |
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vert[an][0] = atof(argv[2*an+4]); |
69 |
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vert[an][1] = atof(argv[2*an+5]); |
70 |
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} |
71 |
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an = 2*nverts+4; |
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} else { |
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readverts(argv[3]); |
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an = 4; |
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} |
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if (nverts < 3) { |
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fprintf(stderr, "%s: not enough vertices\n", argv[0]); |
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exit(1); |
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} |
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|
81 |
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for ( ; an < argc; an++) { |
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if (argv[an][0] != '-') |
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goto userr; |
84 |
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switch (argv[an][1]) { |
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case 'l': /* length vector */ |
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lvect[0] = atof(argv[++an]); |
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lvect[1] = atof(argv[++an]); |
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lvect[2] = atof(argv[++an]); |
89 |
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llen = sqrt(lvect[0]*lvect[0] + lvect[1]*lvect[1] + |
90 |
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lvect[2]*lvect[2]); |
91 |
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if (llen <= FTINY) { |
92 |
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fprintf(stderr, "%s: zero extrusion vector\n", |
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argv[0]); |
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exit(1); |
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} |
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break; |
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case 'r': /* radius */ |
98 |
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crad = atof(argv[++an]); |
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break; |
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case 'e': /* ends */ |
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do_ends = !do_ends; |
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break; |
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case 'c': /* complete */ |
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iscomplete = !iscomplete; |
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break; |
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default: |
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goto userr; |
108 |
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} |
109 |
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} |
110 |
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if (rounding) { |
111 |
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if (crad > fabs(lvect[2])) { |
112 |
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fprintf(stderr, "%s: rounding greater than height\n", |
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argv[0]); |
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exit(1); |
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} |
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compute_rounding(); |
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} |
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printhead(argc, argv); |
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|
120 |
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if (do_ends) |
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if (rounding) |
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printrends(); |
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else |
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printends(); |
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|
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printsides(rounding); |
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|
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s material name ", argv[0]); |
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fprintf(stderr, "{ - | vfile | N v1 v2 .. vN } "); |
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fprintf(stderr, "[-l lvect][-r radius][-c][-e]\n"); |
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exit(1); |
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} |
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|
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static void |
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readverts(fname) /* read vertices from a file */ |
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char *fname; |
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{ |
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} |
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|
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static void |
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side(n0, n1) /* print single side */ |
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register int n0, n1; |
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{ |
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printf("\n%s polygon %s.%d\n", pmtype, pname, n0+1); |
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printf("0\n0\n12\n"); |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n0][0], |
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vert[n0][1], 0.0); |
68 |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n0][0]+lvect[0], |
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vert[n0][1]+lvect[1], lvect[2]); |
70 |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n1][0]+lvect[0], |
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vert[n1][1]+lvect[1], lvect[2]); |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n1][0], |
73 |
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vert[n1][1], 0.0); |
74 |
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} |
75 |
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|
76 |
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|
77 |
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static void |
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rside(n0, n1) /* print side with rounded edge */ |
79 |
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register int n0, n1; |
80 |
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{ |
81 |
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double s, c, t[3]; |
82 |
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|
83 |
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/* compute tanget offset vector */ |
84 |
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s = lvdir*(lvect[1]*u[n1][0] - lvect[0]*u[n1][1])/llen; |
85 |
+ |
if (s < -FTINY || s > FTINY) { |
86 |
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c = sqrt(1. - s*s); |
87 |
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t[0] = (c - 1.)*u[n1][1]; |
88 |
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t[1] = (1. - c)*u[n1][0]; |
89 |
+ |
t[2] = s; |
90 |
+ |
} else |
91 |
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t[0] = t[1] = t[2] = 0.; |
92 |
+ |
/* output side */ |
93 |
+ |
printf("\n%s polygon %s.%d\n", pmtype, pname, n0+1); |
94 |
+ |
printf("0\n0\n12\n"); |
95 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
96 |
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vert[n0][0] + crad*(t[0] - a[n0]*u[n1][0]), |
97 |
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vert[n0][1] + crad*(t[1] - a[n0]*u[n1][1]), |
98 |
+ |
crad*(t[2] + 1.)); |
99 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
100 |
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vert[n0][0] + lvect[0] + crad*(t[0] - a[n0]*u[n1][0]), |
101 |
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vert[n0][1] + lvect[1] + crad*(t[1] - a[n0]*u[n1][1]), |
102 |
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lvect[2] + crad*(t[2] - 1.)); |
103 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
104 |
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vert[n1][0] + lvect[0] + crad*(t[0] + a[n1]*u[n1][0]), |
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vert[n1][1] + lvect[1] + crad*(t[1] + a[n1]*u[n1][1]), |
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lvect[2] + crad*(t[2] - 1.)); |
107 |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", |
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vert[n1][0] + crad*(t[0] + a[n1]*u[n1][0]), |
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vert[n1][1] + crad*(t[1] + a[n1]*u[n1][1]), |
110 |
+ |
crad*(t[2] + 1.)); |
111 |
+ |
/* output joining edge */ |
112 |
+ |
if (lvdir*a[n1] < 0.) |
113 |
+ |
return; |
114 |
+ |
printf("\n%s cylinder %s.e%d\n", pmtype, pname, n0+1); |
115 |
+ |
printf("0\n0\n7\n"); |
116 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
117 |
+ |
vert[n1][0] + crad*(a[n1]*u[n1][0] - u[n1][1]), |
118 |
+ |
vert[n1][1] + crad*(a[n1]*u[n1][1] + u[n1][0]), |
119 |
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crad); |
120 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
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vert[n1][0] + lvect[0] + crad*(a[n1]*u[n1][0] - u[n1][1]), |
122 |
+ |
vert[n1][1] + lvect[1] + crad*(a[n1]*u[n1][1] + u[n1][0]), |
123 |
+ |
lvect[2] - crad); |
124 |
+ |
printf("\t%18.12g\n", lvdir*crad); |
125 |
+ |
} |
126 |
+ |
|
127 |
+ |
|
128 |
+ |
static double |
129 |
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compute_rounding() /* compute vectors for rounding operations */ |
130 |
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{ |
131 |
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register int i; |
132 |
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register double *v0, *v1; |
133 |
< |
double l; |
133 |
> |
double l, asum; |
134 |
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|
135 |
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v0 = vert[nverts-1]; |
136 |
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for (i = 0; i < nverts; i++) { /* compute u[*] */ |
146 |
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u[i][1] /= l; |
147 |
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v0 = v1; |
148 |
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} |
149 |
+ |
asum = 0.; |
150 |
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v1 = u[0]; |
151 |
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for (i = nverts; i--; ) { /* compute a[*] */ |
152 |
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v0 = u[i]; |
159 |
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a[i] = 0.; |
160 |
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else { |
161 |
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a[i] = sqrt((1-l)/(1+l)); |
162 |
< |
if ((v1[0]*v0[1]-v1[1]*v0[0] > 0.) != (lvect[2] > 0.)) |
162 |
> |
asum += l = v1[0]*v0[1]-v1[1]*v0[0]; |
163 |
> |
if (l < 0.) |
164 |
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a[i] = -a[i]; |
165 |
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} |
166 |
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v1 = v0; |
167 |
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} |
168 |
+ |
return(asum*.5); |
169 |
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} |
170 |
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|
171 |
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|
172 |
+ |
static void |
173 |
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printends() /* print ends of prism */ |
174 |
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{ |
175 |
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register int i; |
188 |
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} |
189 |
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|
190 |
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|
191 |
+ |
static void |
192 |
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printrends() /* print ends of prism with rounding */ |
193 |
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{ |
194 |
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register int i; |
202 |
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vert[i][1] + crad*(a[i]*u[i][1] + u[i][0]), |
203 |
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0.0); |
204 |
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} |
205 |
+ |
/* top face */ |
206 |
+ |
printf("\n%s polygon %s.t\n", pmtype, pname); |
207 |
+ |
printf("0\n0\n%d\n", nverts*3); |
208 |
+ |
for (i = nverts; i--; ) { |
209 |
+ |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
210 |
+ |
vert[i][0] + lvect[0] + crad*(a[i]*u[i][0] - u[i][1]), |
211 |
+ |
vert[i][1] + lvect[1] + crad*(a[i]*u[i][1] + u[i][0]), |
212 |
+ |
lvect[2]); |
213 |
+ |
} |
214 |
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/* bottom corners and edges */ |
215 |
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c0[0] = cl[0] = vert[nverts-1][0] + |
216 |
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crad*(a[nverts-1]*u[nverts-1][0] - u[nverts-1][1]); |
225 |
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} else { |
226 |
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c1[0] = cl[0]; c1[1] = cl[1]; c1[2] = cl[2]; |
227 |
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} |
228 |
< |
if (a[i] > 0.) { |
228 |
> |
if (lvdir*a[i] > 0.) { |
229 |
|
printf("\n%s sphere %s.bc%d\n", pmtype, pname, i+1); |
230 |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
231 |
< |
c1[0], c1[1], c1[2], crad); |
231 |
> |
c1[0], c1[1], c1[2], lvdir*crad); |
232 |
|
} |
233 |
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printf("\n%s cylinder %s.be%d\n", pmtype, pname, i+1); |
234 |
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printf("0\n0\n7\n"); |
235 |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", c0[0], c0[1], c0[2]); |
236 |
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printf("\t%18.12g\t%18.12g\t%18.12g\n", c1[0], c1[1], c1[2]); |
237 |
< |
printf("\t%18.12g\n", crad); |
237 |
> |
printf("\t%18.12g\n", lvdir*crad); |
238 |
|
c0[0] = c1[0]; c0[1] = c1[1]; c0[2] = c1[2]; |
239 |
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} |
251 |
– |
/* top face */ |
252 |
– |
printf("\n%s polygon %s.t\n", pmtype, pname); |
253 |
– |
printf("0\n0\n%d\n", nverts*3); |
254 |
– |
for (i = nverts; i--; ) { |
255 |
– |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
256 |
– |
vert[i][0] + lvect[0] + crad*(a[i]*u[i][0] - u[i][1]), |
257 |
– |
vert[i][1] + lvect[1] + crad*(a[i]*u[i][1] + u[i][0]), |
258 |
– |
lvect[2]); |
259 |
– |
} |
240 |
|
/* top corners and edges */ |
241 |
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c0[0] = cl[0] = vert[nverts-1][0] + lvect[0] + |
242 |
|
crad*(a[nverts-1]*u[nverts-1][0] - u[nverts-1][1]); |
253 |
|
} else { |
254 |
|
c1[0] = cl[0]; c1[1] = cl[1]; c1[2] = cl[2]; |
255 |
|
} |
256 |
< |
if (a[i] > 0.) { |
256 |
> |
if (lvdir*a[i] > 0.) { |
257 |
|
printf("\n%s sphere %s.tc%d\n", pmtype, pname, i+1); |
258 |
|
printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
259 |
< |
c1[0], c1[1], c1[2], crad); |
259 |
> |
c1[0], c1[1], c1[2], lvdir*crad); |
260 |
|
} |
261 |
|
printf("\n%s cylinder %s.te%d\n", pmtype, pname, i+1); |
262 |
|
printf("0\n0\n7\n"); |
263 |
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", c0[0], c0[1], c0[2]); |
264 |
|
printf("\t%18.12g\t%18.12g\t%18.12g\n", c1[0], c1[1], c1[2]); |
265 |
< |
printf("\t%18.12g\n", crad); |
265 |
> |
printf("\t%18.12g\n", lvdir*crad); |
266 |
|
c0[0] = c1[0]; c0[1] = c1[1]; c0[2] = c1[2]; |
267 |
|
} |
268 |
|
} |
269 |
|
|
270 |
|
|
271 |
+ |
static void |
272 |
|
printsides(round) /* print prism sides */ |
273 |
|
int round; |
274 |
|
{ |
287 |
|
} |
288 |
|
|
289 |
|
|
290 |
< |
side(n0, n1) /* print single side */ |
310 |
< |
register int n0, n1; |
311 |
< |
{ |
312 |
< |
printf("\n%s polygon %s.%d\n", pmtype, pname, n0+1); |
313 |
< |
printf("0\n0\n12\n"); |
314 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n0][0], |
315 |
< |
vert[n0][1], 0.0); |
316 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n0][0]+lvect[0], |
317 |
< |
vert[n0][1]+lvect[1], lvect[2]); |
318 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n1][0]+lvect[0], |
319 |
< |
vert[n1][1]+lvect[1], lvect[2]); |
320 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", vert[n1][0], |
321 |
< |
vert[n1][1], 0.0); |
322 |
< |
} |
323 |
< |
|
324 |
< |
|
325 |
< |
rside(n0, n1) /* print side with rounded edge */ |
326 |
< |
register int n0, n1; |
327 |
< |
{ |
328 |
< |
double s, c, t[3]; |
329 |
< |
|
330 |
< |
/* compute tanget offset vector */ |
331 |
< |
s = (lvect[1]*u[n1][0] - lvect[0]*u[n1][1])/llen; |
332 |
< |
if (s < -FTINY || s > FTINY) { |
333 |
< |
c = sqrt(1. - s*s); |
334 |
< |
t[0] = (c - 1.)*u[n1][1]; |
335 |
< |
t[1] = (1. - c)*u[n1][0]; |
336 |
< |
t[2] = s; |
337 |
< |
} else |
338 |
< |
t[0] = t[1] = t[2] = 0.; |
339 |
< |
/* output side */ |
340 |
< |
printf("\n%s polygon %s.%d\n", pmtype, pname, n0+1); |
341 |
< |
printf("0\n0\n12\n"); |
342 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
343 |
< |
vert[n0][0] + crad*(t[0] - a[n0]*u[n1][0]), |
344 |
< |
vert[n0][1] + crad*(t[1] - a[n0]*u[n1][1]), |
345 |
< |
crad*(t[2] + 1.)); |
346 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
347 |
< |
vert[n0][0] + lvect[0] + crad*(t[0] - a[n0]*u[n1][0]), |
348 |
< |
vert[n0][1] + lvect[1] + crad*(t[1] - a[n0]*u[n1][1]), |
349 |
< |
lvect[2] + crad*(t[2] - 1.)); |
350 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
351 |
< |
vert[n1][0] + lvect[0] + crad*(t[0] + a[n1]*u[n1][0]), |
352 |
< |
vert[n1][1] + lvect[1] + crad*(t[1] + a[n1]*u[n1][1]), |
353 |
< |
lvect[2] + crad*(t[2] - 1.)); |
354 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
355 |
< |
vert[n1][0] + crad*(t[0] + a[n1]*u[n1][0]), |
356 |
< |
vert[n1][1] + crad*(t[1] + a[n1]*u[n1][1]), |
357 |
< |
crad*(t[2] + 1.)); |
358 |
< |
/* output joining edge */ |
359 |
< |
if (a[n1] < 0.) |
360 |
< |
return; |
361 |
< |
printf("\n%s cylinder %s.e%d\n", pmtype, pname, n0+1); |
362 |
< |
printf("0\n0\n7\n"); |
363 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
364 |
< |
vert[n1][0] + crad*(a[n1]*u[n1][0] - u[n1][1]), |
365 |
< |
vert[n1][1] + crad*(a[n1]*u[n1][1] + u[n1][0]), |
366 |
< |
crad); |
367 |
< |
printf("\t%18.12g\t%18.12g\t%18.12g\n", |
368 |
< |
vert[n1][0] + lvect[0] + crad*(a[n1]*u[n1][0] - u[n1][1]), |
369 |
< |
vert[n1][1] + lvect[1] + crad*(a[n1]*u[n1][1] + u[n1][0]), |
370 |
< |
lvect[2] - crad); |
371 |
< |
printf("\t%18.12g\n", crad); |
372 |
< |
} |
373 |
< |
|
374 |
< |
|
290 |
> |
static void |
291 |
|
printhead(ac, av) /* print command header */ |
292 |
|
register int ac; |
293 |
|
register char **av; |
299 |
|
} |
300 |
|
putchar('\n'); |
301 |
|
} |
302 |
+ |
|
303 |
+ |
|
304 |
+ |
main(argc, argv) |
305 |
+ |
int argc; |
306 |
+ |
char **argv; |
307 |
+ |
{ |
308 |
+ |
int an; |
309 |
+ |
|
310 |
+ |
if (argc < 4) |
311 |
+ |
goto userr; |
312 |
+ |
|
313 |
+ |
pmtype = argv[1]; |
314 |
+ |
pname = argv[2]; |
315 |
+ |
|
316 |
+ |
if (!strcmp(argv[3], "-")) { |
317 |
+ |
readverts(NULL); |
318 |
+ |
an = 4; |
319 |
+ |
} else if (isdigit(argv[3][0])) { |
320 |
+ |
nverts = atoi(argv[3]); |
321 |
+ |
if (argc-3 < 2*nverts) |
322 |
+ |
goto userr; |
323 |
+ |
for (an = 0; an < nverts; an++) { |
324 |
+ |
vert[an][0] = atof(argv[2*an+4]); |
325 |
+ |
vert[an][1] = atof(argv[2*an+5]); |
326 |
+ |
} |
327 |
+ |
an = 2*nverts+4; |
328 |
+ |
} else { |
329 |
+ |
readverts(argv[3]); |
330 |
+ |
an = 4; |
331 |
+ |
} |
332 |
+ |
if (nverts < 3) { |
333 |
+ |
fprintf(stderr, "%s: not enough vertices\n", argv[0]); |
334 |
+ |
exit(1); |
335 |
+ |
} |
336 |
+ |
|
337 |
+ |
for ( ; an < argc; an++) { |
338 |
+ |
if (argv[an][0] != '-') |
339 |
+ |
goto userr; |
340 |
+ |
switch (argv[an][1]) { |
341 |
+ |
case 'l': /* length vector */ |
342 |
+ |
lvect[0] = atof(argv[++an]); |
343 |
+ |
lvect[1] = atof(argv[++an]); |
344 |
+ |
lvect[2] = atof(argv[++an]); |
345 |
+ |
if (lvect[2] < -FTINY) |
346 |
+ |
lvdir = -1; |
347 |
+ |
else if (lvect[2] > FTINY) |
348 |
+ |
lvdir = 1; |
349 |
+ |
else { |
350 |
+ |
fprintf(stderr, |
351 |
+ |
"%s: illegal extrusion vector\n", |
352 |
+ |
argv[0]); |
353 |
+ |
exit(1); |
354 |
+ |
} |
355 |
+ |
llen = sqrt(lvect[0]*lvect[0] + lvect[1]*lvect[1] + |
356 |
+ |
lvect[2]*lvect[2]); |
357 |
+ |
break; |
358 |
+ |
case 'r': /* radius */ |
359 |
+ |
crad = atof(argv[++an]); |
360 |
+ |
break; |
361 |
+ |
case 'e': /* ends */ |
362 |
+ |
do_ends = !do_ends; |
363 |
+ |
break; |
364 |
+ |
case 'c': /* complete */ |
365 |
+ |
iscomplete = !iscomplete; |
366 |
+ |
break; |
367 |
+ |
default: |
368 |
+ |
goto userr; |
369 |
+ |
} |
370 |
+ |
} |
371 |
+ |
if (crad > FTINY) { |
372 |
+ |
if (crad > lvdir*lvect[2]) { |
373 |
+ |
fprintf(stderr, "%s: rounding greater than height\n", |
374 |
+ |
argv[0]); |
375 |
+ |
exit(1); |
376 |
+ |
} |
377 |
+ |
crad *= lvdir; /* simplifies formulas */ |
378 |
+ |
compute_rounding(); |
379 |
+ |
printhead(argc, argv); |
380 |
+ |
if (do_ends) |
381 |
+ |
printrends(); |
382 |
+ |
printsides(1); |
383 |
+ |
} else { |
384 |
+ |
printhead(argc, argv); |
385 |
+ |
if (do_ends) |
386 |
+ |
printends(); |
387 |
+ |
printsides(0); |
388 |
+ |
} |
389 |
+ |
exit(0); |
390 |
+ |
userr: |
391 |
+ |
fprintf(stderr, "Usage: %s material name ", argv[0]); |
392 |
+ |
fprintf(stderr, "{ - | vfile | N v1 v2 .. vN } "); |
393 |
+ |
fprintf(stderr, "[-l lvect][-r radius][-c][-e]\n"); |
394 |
+ |
exit(1); |
395 |
+ |
} |
396 |
+ |
|