1 |
< |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
1 |
> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
|
|
3 |
|
#ifndef lint |
4 |
|
static char SCCSid[] = "$SunId$ SGI"; |
9 |
|
*/ |
10 |
|
|
11 |
|
#include "rholo.h" |
12 |
+ |
#include "view.h" |
13 |
+ |
#include <sys/types.h> |
14 |
|
|
15 |
+ |
#ifndef NFRAG2CHUNK |
16 |
+ |
#define NFRAG2CHUNK 4096 /* number of fragments to start chunking */ |
17 |
+ |
#endif |
18 |
+ |
|
19 |
+ |
#ifndef abs |
20 |
|
#define abs(x) ((x) > 0 ? (x) : -(x)) |
21 |
+ |
#endif |
22 |
+ |
#ifndef sgn |
23 |
|
#define sgn(x) ((x) > 0 ? 1 : (x) < 0 ? -1 : 0) |
24 |
+ |
#endif |
25 |
|
|
26 |
+ |
#define rchunk(n) (((n)+(RPACKSIZ/2))/RPACKSIZ) |
27 |
+ |
|
28 |
+ |
extern time_t time(); |
29 |
+ |
|
30 |
+ |
int chunkycmp = 0; /* clump beams together on disk */ |
31 |
+ |
|
32 |
|
static PACKHEAD *complist=NULL; /* list of beams to compute */ |
33 |
|
static int complen=0; /* length of complist */ |
34 |
|
static int listpos=0; /* current list position for next_packet */ |
36 |
|
|
37 |
|
|
38 |
|
int |
39 |
< |
beamcmp(b0, b1) /* comparison for descending compute order */ |
39 |
> |
beamcmp(b0, b1) /* comparison for compute order */ |
40 |
|
register PACKHEAD *b0, *b1; |
41 |
|
{ |
42 |
< |
return( b1->nr*(b0->nc+1) - b0->nr*(b1->nc+1) ); |
42 |
> |
BEAMI *bip0, *bip1; |
43 |
> |
register long c; |
44 |
> |
/* first check desired quantities */ |
45 |
> |
if (chunkycmp) |
46 |
> |
c = rchunk(b1->nr)*(rchunk(b0->nc)+1L) - |
47 |
> |
rchunk(b0->nr)*(rchunk(b1->nc)+1L); |
48 |
> |
else |
49 |
> |
c = b1->nr*(b0->nc+1L) - b0->nr*(b1->nc+1L); |
50 |
> |
if (c > 0) return(1); |
51 |
> |
if (c < 0) return(-1); |
52 |
> |
/* only one file, so skip the following: */ |
53 |
> |
#if 0 |
54 |
> |
/* next, check file descriptors */ |
55 |
> |
c = hdlist[b0->hd]->fd - hdlist[b1->hd]->fd; |
56 |
> |
if (c) return(c); |
57 |
> |
#endif |
58 |
> |
/* finally, check file positions */ |
59 |
> |
bip0 = &hdlist[b0->hd]->bi[b0->bi]; |
60 |
> |
bip1 = &hdlist[b1->hd]->bi[b1->bi]; |
61 |
> |
/* put diskless beams last */ |
62 |
> |
if (!bip0->nrd) |
63 |
> |
return(bip1->nrd > 0); |
64 |
> |
if (!bip1->nrd) |
65 |
> |
return(-1); |
66 |
> |
c = bip0->fo - bip1->fo; |
67 |
> |
return(c < 0 ? -1 : c > 0); |
68 |
|
} |
69 |
|
|
70 |
|
|
71 |
+ |
int |
72 |
+ |
beamidcmp(b0, b1) /* comparison for beam searching */ |
73 |
+ |
register PACKHEAD *b0, *b1; |
74 |
+ |
{ |
75 |
+ |
register int c = b0->hd - b1->hd; |
76 |
+ |
|
77 |
+ |
if (c) return(c); |
78 |
+ |
return(b0->bi - b1->bi); |
79 |
+ |
} |
80 |
+ |
|
81 |
+ |
|
82 |
+ |
int |
83 |
+ |
dispbeam(b, hb) /* display a holodeck beam */ |
84 |
+ |
register BEAM *b; |
85 |
+ |
register HDBEAMI *hb; |
86 |
+ |
{ |
87 |
+ |
static int n = 0; |
88 |
+ |
static PACKHEAD *p = NULL; |
89 |
+ |
|
90 |
+ |
if (b == NULL) |
91 |
+ |
return; |
92 |
+ |
if (b->nrm > n) { /* (re)allocate packet holder */ |
93 |
+ |
n = b->nrm; |
94 |
+ |
if (p == NULL) p = (PACKHEAD *)malloc(packsiz(n)); |
95 |
+ |
else p = (PACKHEAD *)realloc((char *)p, packsiz(n)); |
96 |
+ |
CHECK(p==NULL, SYSTEM, "out of memory in dispbeam"); |
97 |
+ |
} |
98 |
+ |
/* assign packet fields */ |
99 |
+ |
bcopy((char *)hdbray(b), (char *)packra(p), b->nrm*sizeof(RAYVAL)); |
100 |
+ |
p->nr = p->nc = b->nrm; |
101 |
+ |
for (p->hd = 0; hdlist[p->hd] != hb->h; p->hd++) |
102 |
+ |
if (hdlist[p->hd] == NULL) |
103 |
+ |
error(CONSISTENCY, "unregistered holodeck in dispbeam"); |
104 |
+ |
p->bi = hb->b; |
105 |
+ |
disp_packet(p); /* display it */ |
106 |
+ |
if (n >= 1024) { /* free ridiculous packets */ |
107 |
+ |
free((char *)p); |
108 |
+ |
p = NULL; n = 0; |
109 |
+ |
} |
110 |
+ |
} |
111 |
+ |
|
112 |
+ |
|
113 |
|
bundle_set(op, clist, nents) /* bundle set operation */ |
114 |
|
int op; |
115 |
|
PACKHEAD *clist; |
116 |
|
int nents; |
117 |
|
{ |
118 |
< |
BEAM *b; |
119 |
< |
PACKHEAD *p; |
120 |
< |
register int i, n; |
121 |
< |
|
118 |
> |
int oldnr, n; |
119 |
> |
HDBEAMI *hbarr; |
120 |
> |
register PACKHEAD *csm; |
121 |
> |
register int i; |
122 |
> |
/* search for common members */ |
123 |
> |
for (csm = clist+nents; csm-- > clist; ) |
124 |
> |
csm->nc = -1; |
125 |
> |
qsort((char *)clist, nents, sizeof(PACKHEAD), beamidcmp); |
126 |
> |
for (i = 0; i < complen; i++) { |
127 |
> |
csm = (PACKHEAD *)bsearch((char *)(complist+i), (char *)clist, |
128 |
> |
nents, sizeof(PACKHEAD), beamidcmp); |
129 |
> |
if (csm == NULL) |
130 |
> |
continue; |
131 |
> |
oldnr = complist[i].nr; |
132 |
> |
csm->nc = complist[i].nc; |
133 |
> |
switch (op) { |
134 |
> |
case BS_ADD: /* add to count */ |
135 |
> |
complist[i].nr += csm->nr; |
136 |
> |
csm->nr = 0; |
137 |
> |
break; |
138 |
> |
case BS_MAX: /* maximum of counts */ |
139 |
> |
if (csm->nr > complist[i].nr) |
140 |
> |
complist[i].nr = csm->nr; |
141 |
> |
csm->nr = 0; |
142 |
> |
break; |
143 |
> |
case BS_ADJ: /* reset count */ |
144 |
> |
complist[i].nr = csm->nr; |
145 |
> |
csm->nr = 0; |
146 |
> |
break; |
147 |
> |
case BS_DEL: /* delete count */ |
148 |
> |
if (csm->nr == 0 || csm->nr >= complist[i].nr) |
149 |
> |
complist[i].nr = 0; |
150 |
> |
else |
151 |
> |
complist[i].nr -= csm->nr; |
152 |
> |
break; |
153 |
> |
} |
154 |
> |
if (complist[i].nr != oldnr) |
155 |
> |
lastin = -1; /* flag sort */ |
156 |
> |
} |
157 |
> |
/* record computed rays for uncommon beams */ |
158 |
> |
for (csm = clist+nents; csm-- > clist; ) |
159 |
> |
if (csm->nc < 0) |
160 |
> |
csm->nc = bnrays(hdlist[csm->hd], csm->bi); |
161 |
> |
/* complete list operations */ |
162 |
|
switch (op) { |
163 |
|
case BS_NEW: /* new computation set */ |
164 |
< |
if (complen) |
164 |
> |
listpos = 0; lastin = -1; |
165 |
> |
if (complen) /* free old list */ |
166 |
|
free((char *)complist); |
167 |
< |
if (nents <= 0) { |
168 |
< |
complist = NULL; |
45 |
< |
listpos = complen = 0; |
46 |
< |
lastin = -1; |
167 |
> |
complist = NULL; |
168 |
> |
if (!(complen = nents)) |
169 |
|
return; |
48 |
– |
} |
170 |
|
complist = (PACKHEAD *)malloc(nents*sizeof(PACKHEAD)); |
171 |
|
if (complist == NULL) |
172 |
|
goto memerr; |
173 |
|
bcopy((char *)clist, (char *)complist, nents*sizeof(PACKHEAD)); |
53 |
– |
complen = nents; |
54 |
– |
listpos = 0; |
55 |
– |
lastin = -1; /* flag for initial sort */ |
174 |
|
break; |
175 |
|
case BS_ADD: /* add to computation set */ |
176 |
+ |
case BS_MAX: /* maximum of quantities */ |
177 |
|
case BS_ADJ: /* adjust set quantities */ |
178 |
|
if (nents <= 0) |
179 |
|
return; |
180 |
< |
/* merge any common members */ |
62 |
< |
for (i = 0; i < complen; i++) { |
63 |
< |
for (n = 0; n < nents; n++) |
64 |
< |
if (clist[n].bi == complist[i].bi && |
65 |
< |
clist[n].hd == complist[i].hd) { |
66 |
< |
if (op == BS_ADD) |
67 |
< |
complist[i].nr += clist[n].nr; |
68 |
< |
else /* op == BS_ADJ */ |
69 |
< |
complist[i].nr = clist[n].nr; |
70 |
< |
clist[n].nr = 0; |
71 |
< |
clist[n].nc = 1; |
72 |
< |
lastin = -1; /* flag full sort */ |
73 |
< |
break; |
74 |
< |
} |
75 |
< |
if (n >= nents) |
76 |
< |
clist[i].nc = bnrays(hdlist[clist[i].hd], |
77 |
< |
clist[i].bi); |
78 |
< |
} |
79 |
< |
/* sort updated list */ |
80 |
< |
sortcomplist(); |
81 |
< |
/* sort new entries */ |
180 |
> |
sortcomplist(); /* sort updated list & new entries */ |
181 |
|
qsort((char *)clist, nents, sizeof(PACKHEAD), beamcmp); |
182 |
|
/* what can't we satisfy? */ |
183 |
< |
for (n = 0; n < nents && clist[n].nr > clist[n].nc; n++) |
183 |
> |
for (i = nents, csm = clist; i-- && csm->nr > csm->nc; csm++) |
184 |
|
; |
185 |
< |
if (op == BS_ADJ) |
186 |
< |
nents = n; |
185 |
> |
n = csm - clist; |
186 |
> |
if (op != BS_ADD) { /* don't regenerate adjusted beams */ |
187 |
> |
for (++i; i-- && csm->nr > 0; csm++) |
188 |
> |
; |
189 |
> |
nents = csm - clist; |
190 |
> |
} |
191 |
|
if (n) { /* allocate space for merged list */ |
192 |
|
PACKHEAD *newlist; |
193 |
|
newlist = (PACKHEAD *)malloc( |
205 |
|
lastin = complen-1; /* list is now sorted */ |
206 |
|
break; |
207 |
|
case BS_DEL: /* delete from computation set */ |
208 |
< |
if (nents <= 0) |
106 |
< |
return; |
107 |
< |
/* find each member */ |
108 |
< |
for (i = 0; i < complen; i++) |
109 |
< |
for (n = 0; n < nents; n++) |
110 |
< |
if (clist[n].bi == complist[i].bi && |
111 |
< |
clist[n].hd == complist[i].hd) { |
112 |
< |
if (clist[n].nr == 0 || |
113 |
< |
clist[n].nr >= complist[i].nr) |
114 |
< |
complist[i].nr = 0; |
115 |
< |
else |
116 |
< |
complist[i].nr -= clist[n].nr; |
117 |
< |
lastin = -1; /* flag full sort */ |
118 |
< |
break; |
119 |
< |
} |
120 |
< |
return; /* no display */ |
208 |
> |
return; /* already done */ |
209 |
|
default: |
210 |
|
error(CONSISTENCY, "bundle_set called with unknown operation"); |
211 |
|
} |
212 |
< |
if (outdev == NULL) |
212 |
> |
if (outdev == NULL || !nents) /* nothing to display? */ |
213 |
|
return; |
214 |
< |
n = 32*RPACKSIZ; /* allocate packet holder */ |
215 |
< |
p = (PACKHEAD *)malloc(packsiz(n)); |
216 |
< |
if (p == NULL) |
217 |
< |
goto memerr; |
218 |
< |
/* display what we have */ |
131 |
< |
for (i = 0; i < nents; i++) |
132 |
< |
if ((b = hdgetbeam(hdlist[clist[i].hd], clist[i].bi)) != NULL) { |
133 |
< |
if (b->nrm > n) { |
134 |
< |
n = b->nrm; |
135 |
< |
p = (PACKHEAD *)realloc((char *)p, packsiz(n)); |
136 |
< |
if (p == NULL) |
137 |
< |
goto memerr; |
138 |
< |
} |
139 |
< |
bcopy((char *)hdbray(b), (char *)packra(p), |
140 |
< |
b->nrm*sizeof(RAYVAL)); |
141 |
< |
p->hd = clist[i].hd; |
142 |
< |
p->bi = clist[i].bi; |
143 |
< |
p->nr = p->nc = b->nrm; |
144 |
< |
disp_packet(p); |
145 |
< |
} |
146 |
< |
free((char *)p); /* clean up */ |
147 |
< |
if (op == BS_NEW) { |
148 |
< |
done_packets(flush_queue()); /* empty queue, so we can... */ |
149 |
< |
for (i = 0; i < complen; i++) /* ...get number computed */ |
150 |
< |
complist[i].nc = bnrays(hdlist[complist[i].hd], |
151 |
< |
complist[i].bi); |
214 |
> |
/* load and display beams we have */ |
215 |
> |
hbarr = (HDBEAMI *)malloc(nents*sizeof(HDBEAMI)); |
216 |
> |
for (i = nents; i--; ) { |
217 |
> |
hbarr[i].h = hdlist[clist[i].hd]; |
218 |
> |
hbarr[i].b = clist[i].bi; |
219 |
|
} |
220 |
+ |
hdloadbeams(hbarr, nents, dispbeam); |
221 |
+ |
free((char *)hbarr); |
222 |
+ |
if (hdfragflags&FF_READ) { |
223 |
+ |
listpos = 0; |
224 |
+ |
lastin = -1; /* need to re-sort list */ |
225 |
+ |
} |
226 |
|
return; |
227 |
|
memerr: |
228 |
|
error(SYSTEM, "out of memory in bundle_set"); |
229 |
|
} |
230 |
|
|
231 |
|
|
232 |
< |
int |
233 |
< |
weightf(hp, x0, x1, x2) /* voxel weighting function */ |
161 |
< |
register HOLO *hp; |
162 |
< |
register int x0, x1, x2; |
163 |
< |
{ |
164 |
< |
switch (vlet(OCCUPANCY)) { |
165 |
< |
case 'U': /* uniform weighting */ |
166 |
< |
return(1); |
167 |
< |
case 'C': /* center weighting (crude) */ |
168 |
< |
x0 += x0 - hp->grid[0] + 1; |
169 |
< |
x0 = abs(x0)*hp->grid[1]*hp->grid[2]; |
170 |
< |
x1 += x1 - hp->grid[1] + 1; |
171 |
< |
x1 = abs(x1)*hp->grid[0]*hp->grid[2]; |
172 |
< |
x2 += x2 - hp->grid[2] + 1; |
173 |
< |
x2 = abs(x2)*hp->grid[0]*hp->grid[1]; |
174 |
< |
return(hp->grid[0]*hp->grid[1]*hp->grid[2] - |
175 |
< |
(x0+x1+x2)/3); |
176 |
< |
default: |
177 |
< |
badvalue(OCCUPANCY); |
178 |
< |
} |
179 |
< |
} |
180 |
< |
|
181 |
< |
|
182 |
< |
/* The following is by Daniel Cohen, taken from Graphics Gems IV, p. 368 */ |
183 |
< |
long |
184 |
< |
lineweight(hp, x, y, z, dx, dy, dz) /* compute weights along a line */ |
232 |
> |
double |
233 |
> |
beamvolume(hp, bi) /* compute approximate volume of a beam */ |
234 |
|
HOLO *hp; |
235 |
< |
int x, y, z, dx, dy, dz; |
235 |
> |
int bi; |
236 |
|
{ |
237 |
< |
long wres = 0; |
238 |
< |
int n, sx, sy, sz, exy, exz, ezy, ax, ay, az, bx, by, bz; |
239 |
< |
|
240 |
< |
sx = sgn(dx); sy = sgn(dy); sz = sgn(dz); |
241 |
< |
ax = abs(dx); ay = abs(dy); az = abs(dz); |
242 |
< |
bx = 2*ax; by = 2*ay; bz = 2*az; |
243 |
< |
exy = ay-ax; exz = az-ax; ezy = ay-az; |
244 |
< |
n = ax+ay+az + 1; /* added increment to visit last */ |
245 |
< |
while (n--) { |
246 |
< |
wres += weightf(hp, x, y, z); |
247 |
< |
if (exy < 0) { |
248 |
< |
if (exz < 0) { |
249 |
< |
x += sx; |
250 |
< |
exy += by; exz += bz; |
251 |
< |
} else { |
252 |
< |
z += sz; |
253 |
< |
exz -= bx; ezy += by; |
205 |
< |
} |
206 |
< |
} else { |
207 |
< |
if (ezy < 0) { |
208 |
< |
z += sz; |
209 |
< |
exz -= bx; ezy += by; |
210 |
< |
} else { |
211 |
< |
y += sy; |
212 |
< |
exy -= bx; ezy -= bz; |
213 |
< |
} |
214 |
< |
} |
237 |
> |
GCOORD gc[2]; |
238 |
> |
FVECT cp[4], edgeA, edgeB, cent[2]; |
239 |
> |
FVECT v, crossp[2], diffv; |
240 |
> |
double vol[2]; |
241 |
> |
register int i; |
242 |
> |
/* get grid coordinates */ |
243 |
> |
if (!hdbcoord(gc, hp, bi)) |
244 |
> |
error(CONSISTENCY, "bad beam index in beamvolume"); |
245 |
> |
for (i = 0; i < 2; i++) { /* compute cell area vectors */ |
246 |
> |
hdcell(cp, hp, gc+i); |
247 |
> |
VSUM(edgeA, cp[1], cp[0], -1.0); |
248 |
> |
VSUM(edgeB, cp[3], cp[1], -1.0); |
249 |
> |
fcross(crossp[i], edgeA, edgeB); |
250 |
> |
/* compute center */ |
251 |
> |
cent[i][0] = 0.5*(cp[0][0] + cp[2][0]); |
252 |
> |
cent[i][1] = 0.5*(cp[0][1] + cp[2][1]); |
253 |
> |
cent[i][2] = 0.5*(cp[0][2] + cp[2][2]); |
254 |
|
} |
255 |
< |
return(wres); |
255 |
> |
/* compute difference vector */ |
256 |
> |
VSUM(diffv, cent[1], cent[0], -1.0); |
257 |
> |
for (i = 0; i < 2; i++) { /* compute volume contributions */ |
258 |
> |
vol[i] = 0.5*DOT(crossp[i], diffv); |
259 |
> |
if (vol[i] < 0.) vol[i] = -vol[i]; |
260 |
> |
} |
261 |
> |
return(vol[0] + vol[1]); /* return total volume */ |
262 |
|
} |
263 |
|
|
264 |
|
|
265 |
< |
init_global() /* initialize global ray computation */ |
265 |
> |
ambient_list() /* compute ambient beam list */ |
266 |
|
{ |
267 |
|
long wtotal = 0; |
223 |
– |
int i, j; |
224 |
– |
int lseg[2][3]; |
268 |
|
double frac; |
269 |
< |
register int k; |
270 |
< |
/* free old list */ |
271 |
< |
if (complen > 0) |
229 |
< |
free((char *)complist); |
230 |
< |
/* allocate beam list */ |
269 |
> |
int i; |
270 |
> |
register int j, k; |
271 |
> |
|
272 |
|
complen = 0; |
273 |
|
for (j = 0; hdlist[j] != NULL; j++) |
274 |
|
complen += nbeams(hdlist[j]); |
275 |
|
complist = (PACKHEAD *)malloc(complen*sizeof(PACKHEAD)); |
276 |
< |
if (complist == NULL) |
236 |
< |
error(SYSTEM, "out of memory in init_global"); |
276 |
> |
CHECK(complist==NULL, SYSTEM, "out of memory in ambient_list"); |
277 |
|
/* compute beam weights */ |
278 |
|
k = 0; |
279 |
< |
for (j = 0; hdlist[j] != NULL; j++) |
279 |
> |
for (j = 0; hdlist[j] != NULL; j++) { |
280 |
> |
frac = 512. * VLEN(hdlist[j]->wg[0]) * |
281 |
> |
VLEN(hdlist[j]->wg[1]) * |
282 |
> |
VLEN(hdlist[j]->wg[2]); |
283 |
|
for (i = nbeams(hdlist[j]); i > 0; i--) { |
241 |
– |
hdlseg(lseg, hdlist[j], i); |
284 |
|
complist[k].hd = j; |
285 |
|
complist[k].bi = i; |
286 |
< |
complist[k].nr = lineweight( hdlist[j], |
287 |
< |
lseg[0][0], lseg[0][1], lseg[0][2], |
246 |
< |
lseg[1][0] - lseg[0][0], |
247 |
< |
lseg[1][1] - lseg[0][1], |
248 |
< |
lseg[1][2] - lseg[0][2] ); |
286 |
> |
complist[k].nr = frac*beamvolume(hdlist[j], i) + 0.5; |
287 |
> |
complist[k].nc = bnrays(hdlist[j], i); |
288 |
|
wtotal += complist[k++].nr; |
289 |
|
} |
251 |
– |
/* adjust weights */ |
252 |
– |
if (vdef(DISKSPACE)) { |
253 |
– |
frac = 1024.*1024.*vflt(DISKSPACE) / (wtotal*sizeof(RAYVAL)); |
254 |
– |
if (frac < 0.95 | frac > 1.05) |
255 |
– |
while (k--) |
256 |
– |
complist[k].nr = frac * complist[k].nr; |
290 |
|
} |
291 |
+ |
/* adjust sample weights */ |
292 |
+ |
if (vdef(DISKSPACE)) |
293 |
+ |
frac = 1024.*1024.*vflt(DISKSPACE) / |
294 |
+ |
(wtotal*sizeof(RAYVAL)); |
295 |
+ |
else |
296 |
+ |
frac = 1024.*1024.*16384. / (wtotal*sizeof(RAYVAL)); |
297 |
+ |
if (frac > 1.11 || frac < 0.9) |
298 |
+ |
for (k = complen; k--; ) |
299 |
+ |
complist[k].nr = frac*complist[k].nr + 0.5; |
300 |
|
listpos = 0; lastin = -1; /* flag initial sort */ |
301 |
|
} |
302 |
|
|
303 |
|
|
304 |
+ |
view_list(fp) /* assign beam priority from view list */ |
305 |
+ |
FILE *fp; |
306 |
+ |
{ |
307 |
+ |
double pa = 1.; |
308 |
+ |
VIEW curview; |
309 |
+ |
int xr, yr; |
310 |
+ |
char *err; |
311 |
+ |
BEAMLIST blist; |
312 |
+ |
|
313 |
+ |
copystruct(&curview, &stdview); |
314 |
+ |
while (nextview(&curview, fp) != EOF) { |
315 |
+ |
if ((err = setview(&curview)) != NULL) { |
316 |
+ |
error(WARNING, err); |
317 |
+ |
continue; |
318 |
+ |
} |
319 |
+ |
xr = yr = 1024; |
320 |
+ |
normaspect(viewaspect(&curview), &pa, &xr, &yr); |
321 |
+ |
viewbeams(&curview, xr, yr, &blist); |
322 |
+ |
bundle_set(BS_MAX, blist.bl, blist.nb); |
323 |
+ |
free((char *)blist.bl); |
324 |
+ |
} |
325 |
+ |
} |
326 |
+ |
|
327 |
+ |
|
328 |
+ |
init_global() /* initialize global ray computation */ |
329 |
+ |
{ |
330 |
+ |
register int k; |
331 |
+ |
/* free old list and empty queue */ |
332 |
+ |
if (complen > 0) { |
333 |
+ |
free((char *)complist); |
334 |
+ |
done_packets(flush_queue()); |
335 |
+ |
} |
336 |
+ |
/* reseed random number generator */ |
337 |
+ |
srandom(time(NULL)); |
338 |
+ |
/* allocate beam list */ |
339 |
+ |
if (readinp) |
340 |
+ |
view_list(stdin); |
341 |
+ |
else |
342 |
+ |
ambient_list(); |
343 |
+ |
/* no view vicinity */ |
344 |
+ |
myeye.rng = 0; |
345 |
+ |
} |
346 |
+ |
|
347 |
+ |
|
348 |
|
mergeclists(cdest, cl1, n1, cl2, n2) /* merge two sorted lists */ |
349 |
< |
PACKHEAD *cdest; |
350 |
< |
PACKHEAD *cl1, *cl2; |
349 |
> |
register PACKHEAD *cdest; |
350 |
> |
register PACKHEAD *cl1, *cl2; |
351 |
|
int n1, n2; |
352 |
|
{ |
353 |
< |
int cmp; |
353 |
> |
register int cmp; |
354 |
|
|
355 |
|
while (n1 | n2) { |
356 |
|
if (!n1) cmp = 1; |
371 |
|
sortcomplist() /* fix our list order */ |
372 |
|
{ |
373 |
|
PACKHEAD *list2; |
374 |
+ |
int listlen; |
375 |
|
register int i; |
376 |
|
|
377 |
|
if (complen <= 0) /* check to see if there is even a list */ |
378 |
|
return; |
379 |
+ |
if (!chunkycmp) /* check to see if fragment list is full */ |
380 |
+ |
if (!hdfragOK(hdlist[0]->fd, &listlen, NULL) |
381 |
+ |
#if NFRAG2CHUNK |
382 |
+ |
|| listlen >= NFRAG2CHUNK |
383 |
+ |
#endif |
384 |
+ |
) { |
385 |
+ |
chunkycmp++; /* use "chunky" comparison */ |
386 |
+ |
lastin = -1; /* need to re-sort list */ |
387 |
+ |
#ifdef DEBUG |
388 |
+ |
error(WARNING, "using chunky comparison mode"); |
389 |
+ |
#endif |
390 |
+ |
} |
391 |
|
if (lastin < 0 || listpos*4 >= complen*3) |
392 |
|
qsort((char *)complist, complen, sizeof(PACKHEAD), beamcmp); |
393 |
|
else if (listpos) { /* else sort and merge sublist */ |
394 |
|
list2 = (PACKHEAD *)malloc(listpos*sizeof(PACKHEAD)); |
395 |
< |
if (list2 == NULL) |
297 |
< |
error(SYSTEM, "out of memory in sortcomplist"); |
395 |
> |
CHECK(list2==NULL, SYSTEM, "out of memory in sortcomplist"); |
396 |
|
bcopy((char *)complist,(char *)list2,listpos*sizeof(PACKHEAD)); |
397 |
|
qsort((char *)list2, listpos, sizeof(PACKHEAD), beamcmp); |
398 |
|
mergeclists(complist, list2, listpos, |
409 |
|
} else if (i < complen-1) { |
410 |
|
list2 = (PACKHEAD *)realloc((char *)complist, |
411 |
|
(i+1)*sizeof(PACKHEAD)); |
412 |
< |
if (list2 != NULL) { |
412 |
> |
if (list2 != NULL) |
413 |
|
complist = list2; |
414 |
< |
complen = i+1; |
317 |
< |
} |
414 |
> |
complen = i+1; |
415 |
|
} |
416 |
|
listpos = 0; lastin = i; |
417 |
|
} |
422 |
|
* more or less evenly distributed, such that computing a packet causes |
423 |
|
* a given bundle to move way down in the computation order. We keep |
424 |
|
* track of where the computed bundle with the highest priority would end |
425 |
< |
* up, and if we get further in our compute list than this, we resort the |
425 |
> |
* up, and if we get further in our compute list than this, we re-sort the |
426 |
|
* list and start again from the beginning. Since |
427 |
|
* a merge sort is used, the sorting costs are minimal. |
428 |
|
*/ |
429 |
< |
next_packet(p) /* prepare packet for computation */ |
429 |
> |
next_packet(p, n) /* prepare packet for computation */ |
430 |
|
register PACKET *p; |
431 |
+ |
int n; |
432 |
|
{ |
433 |
|
register int i; |
434 |
|
|
442 |
|
p->nr = complist[listpos].nr - p->nc; |
443 |
|
if (p->nr <= 0) |
444 |
|
return(0); |
445 |
< |
if (p->nr > RPACKSIZ) |
446 |
< |
p->nr = RPACKSIZ; |
445 |
> |
DCHECK(n < 1 | n > RPACKSIZ, |
446 |
> |
CONSISTENCY, "next_packet called with bad n value"); |
447 |
> |
if (p->nr > n) |
448 |
> |
p->nr = n; |
449 |
|
complist[listpos].nc += p->nr; /* find where this one would go */ |
450 |
+ |
if (hdgetbeam(hdlist[p->hd], p->bi) != NULL) |
451 |
+ |
hdfreefrag(hdlist[p->hd], p->bi); |
452 |
|
while (lastin > listpos && |
453 |
|
beamcmp(complist+lastin, complist+listpos) > 0) |
454 |
|
lastin--; |