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< |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 2 |
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#ifndef lint |
| 4 |
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static char SCCSid[] = "$SunId$ SGI"; |
| 10 |
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| 11 |
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#include "rholo.h" |
| 12 |
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|
| 13 |
– |
|
| 13 |
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#define abs(x) ((x) > 0 ? (x) : -(x)) |
| 14 |
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#define sgn(x) ((x) > 0 ? 1 : (x) < 0 ? -1 : 0) |
| 15 |
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|
| 17 |
– |
|
| 16 |
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static PACKHEAD *complist=NULL; /* list of beams to compute */ |
| 17 |
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static int complen=0; /* length of complist */ |
| 18 |
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static int listpos=0; /* current list position for next_packet */ |
| 23 |
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beamcmp(b0, b1) /* comparison for descending compute order */ |
| 24 |
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register PACKHEAD *b0, *b1; |
| 25 |
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{ |
| 26 |
< |
return( b1->nr*(bnrays(hdlist[b0->hd],b0->bi)+1) - |
| 29 |
< |
b0->nr*(bnrays(hdlist[b1->hd],b1->bi)+1) ); |
| 26 |
> |
return( b1->nr*(b0->nc+1) - b0->nr*(b1->nc+1) ); |
| 27 |
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} |
| 28 |
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|
| 29 |
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|
| 30 |
+ |
int |
| 31 |
+ |
dispbeam(b, hp, bi) /* display a holodeck beam */ |
| 32 |
+ |
register BEAM *b; |
| 33 |
+ |
HOLO *hp; |
| 34 |
+ |
int bi; |
| 35 |
+ |
{ |
| 36 |
+ |
static int n = 0; |
| 37 |
+ |
static PACKHEAD *p = NULL; |
| 38 |
+ |
|
| 39 |
+ |
if (b == NULL) |
| 40 |
+ |
return; |
| 41 |
+ |
if (b->nrm > n) { /* (re)allocate packet holder */ |
| 42 |
+ |
n = b->nrm; |
| 43 |
+ |
if (p == NULL) p = (PACKHEAD *)malloc(packsiz(n)); |
| 44 |
+ |
else p = (PACKHEAD *)realloc((char *)p, packsiz(n)); |
| 45 |
+ |
if (p == NULL) |
| 46 |
+ |
error(SYSTEM, "out of memory in dispbeam"); |
| 47 |
+ |
} |
| 48 |
+ |
/* assign packet fields */ |
| 49 |
+ |
bcopy((char *)hdbray(b), (char *)packra(p), b->nrm*sizeof(RAYVAL)); |
| 50 |
+ |
p->nr = p->nc = b->nrm; |
| 51 |
+ |
for (p->hd = 0; hdlist[p->hd] != hp; p->hd++) |
| 52 |
+ |
if (hdlist[p->hd] == NULL) |
| 53 |
+ |
error(CONSISTENCY, "unregistered holodeck in dispbeam"); |
| 54 |
+ |
p->bi = bi; |
| 55 |
+ |
disp_packet(p); /* display it */ |
| 56 |
+ |
} |
| 57 |
+ |
|
| 58 |
+ |
|
| 59 |
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bundle_set(op, clist, nents) /* bundle set operation */ |
| 60 |
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int op; |
| 61 |
< |
PACKHEAD *clist; |
| 61 |
> |
register PACKHEAD *clist; |
| 62 |
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int nents; |
| 63 |
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{ |
| 64 |
< |
BEAM *b; |
| 39 |
< |
PACKHEAD *p; |
| 64 |
> |
int oldnr; |
| 65 |
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register int i, n; |
| 66 |
< |
|
| 66 |
> |
/* look for common members */ |
| 67 |
> |
for (n = 0; n < nents; n++) { |
| 68 |
> |
for (i = 0; i < complen; i++) |
| 69 |
> |
if (clist[n].bi == complist[i].bi && |
| 70 |
> |
clist[n].hd == complist[i].hd) { |
| 71 |
> |
oldnr = complist[i].nr; |
| 72 |
> |
clist[n].nc = complist[i].nc; |
| 73 |
> |
switch (op) { |
| 74 |
> |
case BS_ADD: /* add to count */ |
| 75 |
> |
complist[i].nr += clist[n].nr; |
| 76 |
> |
clist[n].nr = 0; |
| 77 |
> |
break; |
| 78 |
> |
case BS_ADJ: /* reset count */ |
| 79 |
> |
complist[i].nr = clist[n].nr; |
| 80 |
> |
clist[n].nr = 0; |
| 81 |
> |
break; |
| 82 |
> |
case BS_DEL: /* delete count */ |
| 83 |
> |
if (clist[n].nr == 0 || |
| 84 |
> |
clist[n].nr >= complist[i].nr) |
| 85 |
> |
complist[i].nr = 0; |
| 86 |
> |
else |
| 87 |
> |
complist[i].nr -= clist[n].nr; |
| 88 |
> |
break; |
| 89 |
> |
} |
| 90 |
> |
if (complist[i].nr != oldnr) |
| 91 |
> |
lastin = -1; /* flag sort */ |
| 92 |
> |
break; |
| 93 |
> |
} |
| 94 |
> |
if (i >= complen) |
| 95 |
> |
clist[n].nc = bnrays(hdlist[clist[n].hd], clist[n].bi); |
| 96 |
> |
} |
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> |
/* complete list operations */ |
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switch (op) { |
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case BS_NEW: /* new computation set */ |
| 100 |
< |
if (complen) |
| 100 |
> |
listpos = 0; lastin = -1; |
| 101 |
> |
if (complen) /* free old list */ |
| 102 |
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free((char *)complist); |
| 103 |
< |
if (nents <= 0) { |
| 104 |
< |
complist = NULL; |
| 48 |
< |
listpos = complen = 0; |
| 49 |
< |
lastin = -1; |
| 103 |
> |
complist = NULL; |
| 104 |
> |
if (!(complen = nents)) |
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return; |
| 51 |
– |
} |
| 106 |
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complist = (PACKHEAD *)malloc(nents*sizeof(PACKHEAD)); |
| 107 |
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if (complist == NULL) |
| 108 |
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goto memerr; |
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bcopy((char *)clist, (char *)complist, nents*sizeof(PACKHEAD)); |
| 56 |
– |
complen = nents; |
| 57 |
– |
listpos = 0; |
| 58 |
– |
lastin = -1; /* flag for initial sort */ |
| 110 |
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break; |
| 111 |
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case BS_ADD: /* add to computation set */ |
| 112 |
+ |
case BS_ADJ: /* adjust set quantities */ |
| 113 |
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if (nents <= 0) |
| 114 |
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return; |
| 115 |
< |
/* merge any common members */ |
| 64 |
< |
for (i = 0; i < complen; i++) |
| 65 |
< |
for (n = 0; n < nents; n++) |
| 66 |
< |
if (clist[n].bi == complist[i].bi && |
| 67 |
< |
clist[n].hd == complist[i].hd) { |
| 68 |
< |
complist[i].nr += clist[n].nr; |
| 69 |
< |
clist[n].nr = 0; |
| 70 |
< |
lastin = -1; /* flag full sort */ |
| 71 |
< |
break; |
| 72 |
< |
} |
| 73 |
< |
/* sort updated list */ |
| 74 |
< |
sortcomplist(); |
| 75 |
< |
/* sort new entries */ |
| 115 |
> |
sortcomplist(); /* sort updated list & new entries */ |
| 116 |
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qsort((char *)clist, nents, sizeof(PACKHEAD), beamcmp); |
| 117 |
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/* what can't we satisfy? */ |
| 118 |
< |
for (n = 0; n < nents && clist[n].nr > |
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bnrays(hdlist[clist[n].hd],clist[n].bi); n++) |
| 118 |
> |
for (n = 0; n < nents && clist[n].nr > clist[n].nc; n++) |
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; |
| 120 |
+ |
if (op == BS_ADJ) |
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+ |
nents = n; |
| 122 |
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if (n) { /* allocate space for merged list */ |
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PACKHEAD *newlist; |
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newlist = (PACKHEAD *)malloc( |
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lastin = complen-1; /* list is now sorted */ |
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break; |
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case BS_DEL: /* delete from computation set */ |
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< |
if (nents <= 0) |
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< |
return; |
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< |
/* find each member */ |
| 101 |
< |
for (i = 0; i < complen; i++) |
| 102 |
< |
for (n = 0; n < nents; n++) |
| 103 |
< |
if (clist[n].bi == complist[i].bi && |
| 104 |
< |
clist[n].hd == complist[i].hd) { |
| 105 |
< |
if (clist[n].nr == 0 || |
| 106 |
< |
clist[n].nr >= complist[i].nr) |
| 107 |
< |
complist[i].nr = 0; |
| 108 |
< |
else |
| 109 |
< |
complist[i].nr -= clist[n].nr; |
| 110 |
< |
lastin = -1; /* flag full sort */ |
| 111 |
< |
break; |
| 112 |
< |
} |
| 113 |
< |
if (lastin < 0) /* sort updated list */ |
| 114 |
< |
sortcomplist(); |
| 115 |
< |
return; /* no display */ |
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> |
return; /* already done */ |
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default: |
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error(CONSISTENCY, "bundle_set called with unknown operation"); |
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} |
| 143 |
< |
if (outdev == NULL) |
| 144 |
< |
return; |
| 145 |
< |
n = 8*RPACKSIZ; /* allocate packet holder */ |
| 146 |
< |
p = (PACKHEAD *)malloc(packsiz(n)); |
| 147 |
< |
if (p == NULL) |
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< |
goto memerr; |
| 149 |
< |
/* display what we have */ |
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< |
for (i = 0; i < nents; i++) |
| 127 |
< |
if ((b = hdgetbeam(hdlist[clist[i].hd], clist[i].bi)) != NULL) { |
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< |
if (b->nrm > n) { |
| 129 |
< |
n = b->nrm; |
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< |
p = (PACKHEAD *)realloc((char *)p, packsiz(n)); |
| 131 |
< |
if (p == NULL) |
| 132 |
< |
goto memerr; |
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< |
} |
| 134 |
< |
bcopy((char *)hdbray(b), (char *)packra(p), |
| 135 |
< |
(p->nr=b->nrm)*sizeof(RAYVAL)); |
| 136 |
< |
p->hd = clist[i].hd; |
| 137 |
< |
p->bi = clist[i].bi; |
| 138 |
< |
disp_packet(p); |
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> |
if (outdev != NULL) { /* load and display beams we have */ |
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> |
register HDBEAMI *hb; |
| 145 |
> |
|
| 146 |
> |
hb = (HDBEAMI *)malloc(nents*sizeof(HDBEAMI)); |
| 147 |
> |
for (i = 0; i < nents; i++) { |
| 148 |
> |
hb[i].h = hdlist[clist[i].hd]; |
| 149 |
> |
hb[i].b = clist[i].bi; |
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} |
| 151 |
< |
free((char *)p); /* clean up */ |
| 151 |
> |
hdloadbeams(hb, nents, dispbeam); |
| 152 |
> |
free((char *)hb); |
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> |
} |
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return; |
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memerr: |
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error(SYSTEM, "out of memory in bundle_set"); |
| 157 |
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} |
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|
| 159 |
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|
| 160 |
< |
int |
| 161 |
< |
weightf(hp, x0, x1, x2) /* voxel weighting function */ |
| 149 |
< |
register HOLO *hp; |
| 150 |
< |
register int x0, x1, x2; |
| 151 |
< |
{ |
| 152 |
< |
switch (vlet(OCCUPANCY)) { |
| 153 |
< |
case 'U': /* uniform weighting */ |
| 154 |
< |
return(1); |
| 155 |
< |
case 'C': /* center weighting (crude) */ |
| 156 |
< |
x0 += x0 - hp->grid[0] + 1; |
| 157 |
< |
x0 = abs(x0)*hp->grid[1]*hp->grid[2]; |
| 158 |
< |
x1 += x1 - hp->grid[1] + 1; |
| 159 |
< |
x1 = abs(x1)*hp->grid[0]*hp->grid[2]; |
| 160 |
< |
x2 += x2 - hp->grid[2] + 1; |
| 161 |
< |
x2 = abs(x2)*hp->grid[0]*hp->grid[1]; |
| 162 |
< |
return(hp->grid[0]*hp->grid[1]*hp->grid[2] - |
| 163 |
< |
(x0+x1+x2)/3); |
| 164 |
< |
default: |
| 165 |
< |
badvalue(OCCUPANCY); |
| 166 |
< |
} |
| 167 |
< |
} |
| 168 |
< |
|
| 169 |
< |
|
| 170 |
< |
/* The following is by Daniel Cohen, taken from Graphics Gems IV, p. 368 */ |
| 171 |
< |
long |
| 172 |
< |
lineweight(hp, x, y, z, dx, dy, dz) /* compute weights along a line */ |
| 160 |
> |
double |
| 161 |
> |
beamvolume(hp, bi) /* compute approximate volume of a beam */ |
| 162 |
|
HOLO *hp; |
| 163 |
< |
int x, y, z, dx, dy, dz; |
| 163 |
> |
int bi; |
| 164 |
|
{ |
| 165 |
< |
long wres = 0; |
| 166 |
< |
int n, sx, sy, sz, exy, exz, ezy, ax, ay, az, bx, by, bz; |
| 167 |
< |
|
| 168 |
< |
sx = sgn(dx); sy = sgn(dy); sz = sgn(dz); |
| 169 |
< |
ax = abs(dx); ay = abs(dy); az = abs(dz); |
| 170 |
< |
bx = 2*ax; by = 2*ay; bz = 2*az; |
| 171 |
< |
exy = ay-ax; exz = az-ax; ezy = ay-az; |
| 172 |
< |
n = ax+ay+az + 1; /* added increment to visit last */ |
| 173 |
< |
while (n--) { |
| 174 |
< |
wres += weightf(hp, x, y, z); |
| 175 |
< |
if (exy < 0) { |
| 176 |
< |
if (exz < 0) { |
| 177 |
< |
x += sx; |
| 178 |
< |
exy += by; exz += bz; |
| 179 |
< |
} else { |
| 180 |
< |
z += sz; |
| 181 |
< |
exz -= bx; ezy += by; |
| 193 |
< |
} |
| 194 |
< |
} else { |
| 195 |
< |
if (ezy < 0) { |
| 196 |
< |
z += sz; |
| 197 |
< |
exz -= bx; ezy += by; |
| 198 |
< |
} else { |
| 199 |
< |
y += sy; |
| 200 |
< |
exy -= bx; ezy -= bz; |
| 201 |
< |
} |
| 202 |
< |
} |
| 165 |
> |
GCOORD gc[2]; |
| 166 |
> |
FVECT cp[4], edgeA, edgeB, cent[2]; |
| 167 |
> |
FVECT v, crossp[2], diffv; |
| 168 |
> |
double vol[2]; |
| 169 |
> |
register int i; |
| 170 |
> |
/* get grid coordinates */ |
| 171 |
> |
if (!hdbcoord(gc, hp, bi)) |
| 172 |
> |
error(CONSISTENCY, "bad beam index in beamvolume"); |
| 173 |
> |
for (i = 0; i < 2; i++) { /* compute cell area vectors */ |
| 174 |
> |
hdcell(cp, hp, gc+i); |
| 175 |
> |
VSUM(edgeA, cp[1], cp[0], -1.0); |
| 176 |
> |
VSUM(edgeB, cp[3], cp[1], -1.0); |
| 177 |
> |
fcross(crossp[i], edgeA, edgeB); |
| 178 |
> |
/* compute center */ |
| 179 |
> |
cent[i][0] = 0.5*(cp[0][0] + cp[2][0]); |
| 180 |
> |
cent[i][1] = 0.5*(cp[0][1] + cp[2][1]); |
| 181 |
> |
cent[i][2] = 0.5*(cp[0][2] + cp[2][2]); |
| 182 |
|
} |
| 183 |
< |
return(wres); |
| 183 |
> |
/* compute difference vector */ |
| 184 |
> |
VSUM(diffv, cent[1], cent[0], -1.0); |
| 185 |
> |
for (i = 0; i < 2; i++) { /* compute volume contributions */ |
| 186 |
> |
vol[i] = 0.5*DOT(crossp[i], diffv); |
| 187 |
> |
if (vol[i] < 0.) vol[i] = -vol[i]; |
| 188 |
> |
} |
| 189 |
> |
return(vol[0] + vol[1]); /* return total volume */ |
| 190 |
|
} |
| 191 |
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|
| 192 |
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|
| 193 |
|
init_global() /* initialize global ray computation */ |
| 194 |
|
{ |
| 195 |
|
long wtotal = 0; |
| 211 |
– |
int i, j; |
| 212 |
– |
int lseg[2][3]; |
| 196 |
|
double frac; |
| 197 |
< |
register int k; |
| 198 |
< |
/* free old list */ |
| 199 |
< |
if (complen > 0) |
| 197 |
> |
int i; |
| 198 |
> |
register int j, k; |
| 199 |
> |
/* free old list and empty queue */ |
| 200 |
> |
if (complen > 0) { |
| 201 |
|
free((char *)complist); |
| 202 |
+ |
done_packets(flush_queue()); |
| 203 |
+ |
} |
| 204 |
|
/* allocate beam list */ |
| 205 |
|
complen = 0; |
| 206 |
|
for (j = 0; hdlist[j] != NULL; j++) |
| 210 |
|
error(SYSTEM, "out of memory in init_global"); |
| 211 |
|
/* compute beam weights */ |
| 212 |
|
k = 0; |
| 213 |
< |
for (j = 0; hdlist[j] != NULL; j++) |
| 213 |
> |
for (j = 0; hdlist[j] != NULL; j++) { |
| 214 |
> |
frac = 512. * VLEN(hdlist[j]->wg[0]) * |
| 215 |
> |
VLEN(hdlist[j]->wg[1]) * |
| 216 |
> |
VLEN(hdlist[j]->wg[2]); |
| 217 |
|
for (i = nbeams(hdlist[j]); i > 0; i--) { |
| 229 |
– |
hdlseg(lseg, hdlist[j], i); |
| 218 |
|
complist[k].hd = j; |
| 219 |
|
complist[k].bi = i; |
| 220 |
< |
complist[k].nr = lineweight( hdlist[j], |
| 221 |
< |
lseg[0][0], lseg[0][1], lseg[0][2], |
| 234 |
< |
lseg[1][0] - lseg[0][0], |
| 235 |
< |
lseg[1][1] - lseg[0][1], |
| 236 |
< |
lseg[1][2] - lseg[0][2] ); |
| 220 |
> |
complist[k].nr = frac*beamvolume(hdlist[j], i) + 0.5; |
| 221 |
> |
complist[k].nc = bnrays(hdlist[j], i); |
| 222 |
|
wtotal += complist[k++].nr; |
| 223 |
|
} |
| 224 |
+ |
} |
| 225 |
|
/* adjust weights */ |
| 226 |
< |
if (vdef(DISKSPACE)) { |
| 226 |
> |
if (vdef(DISKSPACE)) |
| 227 |
|
frac = 1024.*1024.*vflt(DISKSPACE) / (wtotal*sizeof(RAYVAL)); |
| 228 |
< |
if (frac < 0.95 | frac > 1.05) |
| 229 |
< |
while (k--) |
| 230 |
< |
complist[k].nr = frac * complist[k].nr; |
| 231 |
< |
} |
| 232 |
< |
listpos = 0; lastin = -1; /* flag initial sort */ |
| 228 |
> |
else |
| 229 |
> |
frac = 1024.*1024.*16384. / (wtotal*sizeof(RAYVAL)); |
| 230 |
> |
while (k--) |
| 231 |
> |
complist[k].nr = frac * complist[k].nr; |
| 232 |
> |
listpos = 0; lastin = -1; /* perform initial sort */ |
| 233 |
> |
sortcomplist(); |
| 234 |
|
} |
| 235 |
|
|
| 236 |
|
|
| 237 |
|
mergeclists(cdest, cl1, n1, cl2, n2) /* merge two sorted lists */ |
| 238 |
< |
PACKHEAD *cdest; |
| 239 |
< |
PACKHEAD *cl1, *cl2; |
| 238 |
> |
register PACKHEAD *cdest; |
| 239 |
> |
register PACKHEAD *cl1, *cl2; |
| 240 |
|
int n1, n2; |
| 241 |
|
{ |
| 242 |
< |
int cmp; |
| 242 |
> |
register int cmp; |
| 243 |
|
|
| 244 |
|
while (n1 | n2) { |
| 245 |
|
if (!n1) cmp = 1; |
| 262 |
|
PACKHEAD *list2; |
| 263 |
|
register int i; |
| 264 |
|
|
| 278 |
– |
/* empty queue */ |
| 279 |
– |
done_packets(flush_queue()); |
| 265 |
|
if (complen <= 0) /* check to see if there is even a list */ |
| 266 |
|
return; |
| 267 |
|
if (lastin < 0 || listpos*4 >= complen*3) |
| 276 |
|
complist+listpos, complen-listpos); |
| 277 |
|
free((char *)list2); |
| 278 |
|
} |
| 294 |
– |
/* check for all finished */ |
| 295 |
– |
if (complist[0].nr <= bnrays(hdlist[complist[0].hd],complist[0].bi)) { |
| 296 |
– |
free((char *)complist); |
| 297 |
– |
complist = NULL; |
| 298 |
– |
complen = 0; |
| 299 |
– |
} |
| 279 |
|
/* drop satisfied requests */ |
| 280 |
< |
for (i = complen; i-- && complist[i].nr <= |
| 302 |
< |
bnrays(hdlist[complist[i].hd],complist[i].bi); ) |
| 280 |
> |
for (i = complen; i-- && complist[i].nr <= complist[i].nc; ) |
| 281 |
|
; |
| 282 |
|
if (i < 0) { |
| 283 |
|
free((char *)complist); |
| 301 |
|
* a given bundle to move way down in the computation order. We keep |
| 302 |
|
* track of where the computed bundle with the highest priority would end |
| 303 |
|
* up, and if we get further in our compute list than this, we resort the |
| 304 |
< |
* list and start again from the beginning. We have to flush the queue |
| 305 |
< |
* each time we sort, to ensure that we are not disturbing the order. |
| 328 |
< |
* If our major assumption is violated, and we have a very steep |
| 329 |
< |
* descent in our weights, then we will end up resorting much more often |
| 330 |
< |
* than necessary, resulting in frequent flushing of the queue. Since |
| 331 |
< |
* a merge sort is used, the sorting costs will be minimal. |
| 304 |
> |
* list and start again from the beginning. Since |
| 305 |
> |
* a merge sort is used, the sorting costs are minimal. |
| 306 |
|
*/ |
| 307 |
< |
next_packet(p) /* prepare packet for computation */ |
| 307 |
> |
next_packet(p, n) /* prepare packet for computation */ |
| 308 |
|
register PACKET *p; |
| 309 |
+ |
int n; |
| 310 |
|
{ |
| 336 |
– |
int ncomp; |
| 311 |
|
register int i; |
| 312 |
|
|
| 339 |
– |
if (complen <= 0) |
| 340 |
– |
return(0); |
| 313 |
|
if (listpos > lastin) /* time to sort the list */ |
| 314 |
|
sortcomplist(); |
| 315 |
+ |
if (complen <= 0) |
| 316 |
+ |
return(0); |
| 317 |
|
p->hd = complist[listpos].hd; |
| 318 |
|
p->bi = complist[listpos].bi; |
| 319 |
< |
ncomp = bnrays(hdlist[p->hd],p->bi); |
| 320 |
< |
p->nr = complist[listpos].nr - ncomp; |
| 319 |
> |
p->nc = complist[listpos].nc; |
| 320 |
> |
p->nr = complist[listpos].nr - p->nc; |
| 321 |
|
if (p->nr <= 0) |
| 322 |
|
return(0); |
| 323 |
< |
if (p->nr > RPACKSIZ) |
| 324 |
< |
p->nr = RPACKSIZ; |
| 325 |
< |
ncomp += p->nr; /* find where this one would go */ |
| 326 |
< |
while (lastin > listpos && complist[listpos].nr * |
| 327 |
< |
(bnrays(hdlist[complist[lastin].hd],complist[lastin].bi)+1) |
| 328 |
< |
> complist[lastin].nr * (ncomp+1)) |
| 323 |
> |
#ifdef DEBUG |
| 324 |
> |
if (n < 1 | n > RPACKSIZ) |
| 325 |
> |
error(CONSISTENCY, "next_packet called with bad n value"); |
| 326 |
> |
#endif |
| 327 |
> |
if (p->nr > n) |
| 328 |
> |
p->nr = n; |
| 329 |
> |
complist[listpos].nc += p->nr; /* find where this one would go */ |
| 330 |
> |
while (lastin > listpos && |
| 331 |
> |
beamcmp(complist+lastin, complist+listpos) > 0) |
| 332 |
|
lastin--; |
| 333 |
|
listpos++; |
| 334 |
|
return(1); |
