203 |
|
} |
204 |
|
|
205 |
|
|
206 |
+ |
int |
207 |
+ |
angcmp(ap1, ap2) /* compare two angles */ |
208 |
+ |
ANGLE *ap1, *ap2; |
209 |
+ |
{ |
210 |
+ |
register int a1, a2; |
211 |
+ |
|
212 |
+ |
a1 = *ap1; |
213 |
+ |
a2 = *ap2; |
214 |
+ |
if (a1 == a2) { |
215 |
+ |
fprintf(stderr, "%s: duplicate glare angle (%d)\n", |
216 |
+ |
progname, a1); |
217 |
+ |
exit(1); |
218 |
+ |
} |
219 |
+ |
return(a1-a2); |
220 |
+ |
} |
221 |
+ |
|
222 |
+ |
|
223 |
|
init() /* initialize global variables */ |
224 |
|
{ |
225 |
|
double d; |
231 |
|
/* set direction vectors */ |
232 |
|
for (i = 0; glarang[i] != AEND; i++) |
233 |
|
; |
234 |
< |
if (i > 0 && (glarang[0] <= 0 || glarang[i-1] >= 180)) { |
235 |
< |
fprintf(stderr, "%s: glare angles must be between 1 and 179\n", |
234 |
> |
qsort(glarang, i, sizeof(ANGLE), angcmp); |
235 |
> |
if (i > 0 && (glarang[0] <= 0 || glarang[i-1] > 180)) { |
236 |
> |
fprintf(stderr, "%s: glare angles must be between 1 and 180\n", |
237 |
|
progname); |
238 |
|
exit(1); |
239 |
|
} |