271 |
|
memerr: |
272 |
|
error(SYSTEM, "out of memory in getviewcells"); |
273 |
|
} |
274 |
+ |
|
275 |
+ |
|
276 |
+ |
gridlines(f) /* run through holodeck section grid lines */ |
277 |
+ |
int (*f)(); |
278 |
+ |
{ |
279 |
+ |
register int hd, w, i; |
280 |
+ |
int g0, g1; |
281 |
+ |
FVECT wp[2]; |
282 |
+ |
double d; |
283 |
+ |
/* do each wall on each section */ |
284 |
+ |
for (hd = 0; hdlist[hd] != NULL; hd++) |
285 |
+ |
for (w = 0; w < 6; w++) { |
286 |
+ |
g0 = ((w>>1)+1)%3; |
287 |
+ |
g1 = ((w>>1)+2)%3; |
288 |
+ |
for (i = hdlist[hd]->grid[g0]; i--; ) { /* g0 lines */ |
289 |
+ |
d = (double)i/hdlist[hd]->grid[g0]; |
290 |
+ |
VSUM(wp[0], hdlist[hd]->orig, |
291 |
+ |
hdlist[hd]->xv[g0], d); |
292 |
+ |
if (w & 1) |
293 |
+ |
VSUM(wp[0], wp[0], |
294 |
+ |
hdlist[hd]->xv[w>>1], 1.); |
295 |
+ |
VSUM(wp[1], wp[0], hdlist[hd]->xv[g1], 1.); |
296 |
+ |
(*f)(wp); |
297 |
+ |
} |
298 |
+ |
for (i = hdlist[hd]->grid[g1]; i--; ) { /* g1 lines */ |
299 |
+ |
d = (double)i/hdlist[hd]->grid[g1]; |
300 |
+ |
VSUM(wp[0], hdlist[hd]->orig, |
301 |
+ |
hdlist[hd]->xv[g1], d); |
302 |
+ |
if (w & 1) |
303 |
+ |
VSUM(wp[0], wp[0], |
304 |
+ |
hdlist[hd]->xv[w>>1], 1.); |
305 |
+ |
VSUM(wp[1], wp[0], hdlist[hd]->xv[g0], 1.); |
306 |
+ |
(*f)(wp); |
307 |
+ |
} |
308 |
+ |
} |
309 |
+ |
} |