29 |
|
int reverse = 0; /* boolean true for reversed normals */ |
30 |
|
|
31 |
|
|
32 |
+ |
|
33 |
+ |
static void |
34 |
+ |
vertex(v) |
35 |
+ |
register int v; |
36 |
+ |
{ |
37 |
+ |
register int i; |
38 |
+ |
|
39 |
+ |
for (i = 0; i < 3; i++) { |
40 |
+ |
if (v & 010) |
41 |
+ |
printf("\t%18.12g", v & 01 ? size[i]-bevel : bevel); |
42 |
+ |
else |
43 |
+ |
printf("\t%18.12g", v & 01 ? size[i] : 0.0); |
44 |
+ |
v >>= 1; |
45 |
+ |
} |
46 |
+ |
printf("\n"); |
47 |
+ |
} |
48 |
+ |
|
49 |
+ |
|
50 |
+ |
static void |
51 |
+ |
side(a, b, c, d) /* generate a rectangular face */ |
52 |
+ |
int a, b, c, d; |
53 |
+ |
{ |
54 |
+ |
printf("\n%s polygon %s.%c%c%c%c\n", cmtype, cname, |
55 |
+ |
let[a], let[b], let[c], let[d]); |
56 |
+ |
printf("0\n0\n12\n"); |
57 |
+ |
if (reverse) { |
58 |
+ |
vertex(d); |
59 |
+ |
vertex(c); |
60 |
+ |
vertex(b); |
61 |
+ |
vertex(a); |
62 |
+ |
} else { |
63 |
+ |
vertex(a); |
64 |
+ |
vertex(b); |
65 |
+ |
vertex(c); |
66 |
+ |
vertex(d); |
67 |
+ |
} |
68 |
+ |
} |
69 |
+ |
|
70 |
+ |
|
71 |
+ |
static void |
72 |
+ |
corner(a, b, c) /* generate a triangular face */ |
73 |
+ |
int a, b, c; |
74 |
+ |
{ |
75 |
+ |
printf("\n%s polygon %s.%c%c%c\n", cmtype, cname, |
76 |
+ |
let[a], let[b], let[c]); |
77 |
+ |
printf("0\n0\n9\n"); |
78 |
+ |
if (reverse) { |
79 |
+ |
vertex(c); |
80 |
+ |
vertex(b); |
81 |
+ |
vertex(a); |
82 |
+ |
} else { |
83 |
+ |
vertex(a); |
84 |
+ |
vertex(b); |
85 |
+ |
vertex(c); |
86 |
+ |
} |
87 |
+ |
} |
88 |
+ |
|
89 |
+ |
|
90 |
+ |
static void |
91 |
+ |
cylinder(v0, v1) /* generate a cylinder */ |
92 |
+ |
int v0, v1; |
93 |
+ |
{ |
94 |
+ |
printf("\n%s cylinder %s.%c%c\n", cmtype, cname, v0+'0', v1+'0'); |
95 |
+ |
printf("0\n0\n7\n"); |
96 |
+ |
vertex(v0); |
97 |
+ |
vertex(v1); |
98 |
+ |
printf("\t%18.12g\n", bevel); |
99 |
+ |
} |
100 |
+ |
|
101 |
+ |
|
102 |
+ |
static void |
103 |
+ |
sphere(v0) /* generate a sphere */ |
104 |
+ |
int v0; |
105 |
+ |
{ |
106 |
+ |
printf("\n%s sphere %s.%c\n", cmtype, cname, v0+'0'); |
107 |
+ |
printf("0\n0\n4\n"); |
108 |
+ |
vertex(v0); |
109 |
+ |
printf("\t%18.12g\n", bevel); |
110 |
+ |
} |
111 |
+ |
|
112 |
+ |
|
113 |
+ |
static void |
114 |
+ |
printhead(ac, av) /* print command header */ |
115 |
+ |
register int ac; |
116 |
+ |
register char **av; |
117 |
+ |
{ |
118 |
+ |
putchar('#'); |
119 |
+ |
while (ac--) { |
120 |
+ |
putchar(' '); |
121 |
+ |
fputs(*av++, stdout); |
122 |
+ |
} |
123 |
+ |
putchar('\n'); |
124 |
+ |
} |
125 |
+ |
|
126 |
+ |
|
127 |
+ |
int |
128 |
|
main(argc, argv) |
129 |
|
int argc; |
130 |
|
char **argv; |
234 |
|
exit(1); |
235 |
|
} |
236 |
|
|
141 |
– |
|
142 |
– |
side(a, b, c, d) /* generate a rectangular face */ |
143 |
– |
int a, b, c, d; |
144 |
– |
{ |
145 |
– |
printf("\n%s polygon %s.%c%c%c%c\n", cmtype, cname, |
146 |
– |
let[a], let[b], let[c], let[d]); |
147 |
– |
printf("0\n0\n12\n"); |
148 |
– |
if (reverse) { |
149 |
– |
vertex(d); |
150 |
– |
vertex(c); |
151 |
– |
vertex(b); |
152 |
– |
vertex(a); |
153 |
– |
} else { |
154 |
– |
vertex(a); |
155 |
– |
vertex(b); |
156 |
– |
vertex(c); |
157 |
– |
vertex(d); |
158 |
– |
} |
159 |
– |
} |
160 |
– |
|
161 |
– |
|
162 |
– |
corner(a, b, c) /* generate a triangular face */ |
163 |
– |
int a, b, c; |
164 |
– |
{ |
165 |
– |
printf("\n%s polygon %s.%c%c%c\n", cmtype, cname, |
166 |
– |
let[a], let[b], let[c]); |
167 |
– |
printf("0\n0\n9\n"); |
168 |
– |
if (reverse) { |
169 |
– |
vertex(c); |
170 |
– |
vertex(b); |
171 |
– |
vertex(a); |
172 |
– |
} else { |
173 |
– |
vertex(a); |
174 |
– |
vertex(b); |
175 |
– |
vertex(c); |
176 |
– |
} |
177 |
– |
} |
178 |
– |
|
179 |
– |
|
180 |
– |
cylinder(v0, v1) /* generate a cylinder */ |
181 |
– |
int v0, v1; |
182 |
– |
{ |
183 |
– |
printf("\n%s cylinder %s.%c%c\n", cmtype, cname, v0+'0', v1+'0'); |
184 |
– |
printf("0\n0\n7\n"); |
185 |
– |
vertex(v0); |
186 |
– |
vertex(v1); |
187 |
– |
printf("\t%18.12g\n", bevel); |
188 |
– |
} |
189 |
– |
|
190 |
– |
|
191 |
– |
sphere(v0) /* generate a sphere */ |
192 |
– |
int v0; |
193 |
– |
{ |
194 |
– |
printf("\n%s sphere %s.%c\n", cmtype, cname, v0+'0'); |
195 |
– |
printf("0\n0\n4\n"); |
196 |
– |
vertex(v0); |
197 |
– |
printf("\t%18.12g\n", bevel); |
198 |
– |
} |
199 |
– |
|
200 |
– |
|
201 |
– |
vertex(v) |
202 |
– |
register int v; |
203 |
– |
{ |
204 |
– |
register int i; |
205 |
– |
|
206 |
– |
for (i = 0; i < 3; i++) { |
207 |
– |
if (v & 010) |
208 |
– |
printf("\t%18.12g", v & 01 ? size[i]-bevel : bevel); |
209 |
– |
else |
210 |
– |
printf("\t%18.12g", v & 01 ? size[i] : 0.0); |
211 |
– |
v >>= 1; |
212 |
– |
} |
213 |
– |
printf("\n"); |
214 |
– |
} |
215 |
– |
|
216 |
– |
|
217 |
– |
printhead(ac, av) /* print command header */ |
218 |
– |
register int ac; |
219 |
– |
register char **av; |
220 |
– |
{ |
221 |
– |
putchar('#'); |
222 |
– |
while (ac--) { |
223 |
– |
putchar(' '); |
224 |
– |
fputs(*av++, stdout); |
225 |
– |
} |
226 |
– |
putchar('\n'); |
227 |
– |
} |