11 |
|
|
12 |
|
#include "ray.h" |
13 |
|
|
14 |
+ |
#include "octree.h" |
15 |
+ |
|
16 |
|
#include "otypes.h" |
17 |
|
|
18 |
|
#include "source.h" |
19 |
|
|
20 |
+ |
#include "random.h" |
21 |
|
|
22 |
< |
double intercircle(); |
22 |
> |
#define MINSAMPLES 16 /* minimum number of pretest samples */ |
23 |
> |
#define STESTMAX 32 /* maximum seeks per sample */ |
24 |
|
|
25 |
+ |
|
26 |
+ |
double getdisk(); |
27 |
+ |
|
28 |
|
static OBJECT *vobject; /* virtual source objects */ |
29 |
|
static int nvobjects = 0; /* number of virtual source objects */ |
30 |
|
|
44 |
|
if (!isvlight(objptr(o->omod)->otype)) |
45 |
|
continue; |
46 |
|
if (sfun[o->otype].of == NULL || |
47 |
< |
sfun[o->otype].of->getpleq == NULL) |
48 |
< |
objerror(o, USER, "illegal material"); |
47 |
> |
sfun[o->otype].of->getpleq == NULL) { |
48 |
> |
objerror(o,WARNING,"secondary sources not supported"); |
49 |
> |
continue; |
50 |
> |
} |
51 |
|
if (nvobjects == 0) |
52 |
|
vobject = (OBJECT *)malloc(sizeof(OBJECT)); |
53 |
|
else |
64 |
|
#endif |
65 |
|
/* append virtual sources */ |
66 |
|
for (i = nsources; i-- > 0; ) |
67 |
< |
if (!(source[i].sflags & SSKIP)) |
59 |
< |
addvirtuals(i, directrelay); |
67 |
> |
addvirtuals(i, directrelay); |
68 |
|
/* done with our object list */ |
69 |
|
free((char *)vobject); |
70 |
|
nvobjects = 0; |
79 |
|
/* check relay limit first */ |
80 |
|
if (nr <= 0) |
81 |
|
return; |
82 |
+ |
if (source[sn].sflags & SSKIP) |
83 |
+ |
return; |
84 |
|
/* check each virtual object for projection */ |
85 |
|
for (i = 0; i < nvobjects; i++) |
86 |
|
/* vproject() calls us recursively */ |
106 |
|
for (i = 0; i < vsmat->nproj; i++) |
107 |
|
if ((*vsmat->vproj)(proj, o, &source[sn], i)) |
108 |
|
if ((ns = makevsrc(o, sn, proj)) >= 0) { |
109 |
+ |
source[ns].sa.sv.pn = i; |
110 |
|
#ifdef DEBUG |
111 |
< |
virtverb(&source[ns], stderr); |
111 |
> |
virtverb(ns, stderr); |
112 |
|
#endif |
113 |
|
addvirtuals(ns, n); |
114 |
|
} |
121 |
|
register int sn; |
122 |
|
MAT4 pm; |
123 |
|
{ |
124 |
< |
register int nsn; |
125 |
< |
FVECT nsloc, ocent, nsnorm; |
124 |
> |
FVECT nsloc, nsnorm, ocent, v; |
125 |
> |
double maxrad2, d; |
126 |
|
int nsflags; |
116 |
– |
double maxrad2; |
117 |
– |
double d1; |
127 |
|
SPOT theirspot, ourspot; |
128 |
|
register int i; |
129 |
|
|
130 |
< |
nsflags = (source[sn].sflags|(SVIRTUAL|SFOLLOW)) & ~SSPOT; |
130 |
> |
nsflags = source[sn].sflags | (SVIRTUAL|SSPOT|SFOLLOW); |
131 |
|
/* get object center and max. radius */ |
132 |
< |
if (sfun[op->otype].of->getdisk != NULL) { |
133 |
< |
maxrad2 = (*sfun[op->otype].of->getdisk)(ocent, op); |
134 |
< |
if (maxrad2 <= FTINY) /* too small? */ |
126 |
< |
return(-1); |
127 |
< |
nsflags |= SSPOT; |
128 |
< |
} |
132 |
> |
maxrad2 = getdisk(ocent, op, sn); |
133 |
> |
if (maxrad2 <= FTINY) /* too small? */ |
134 |
> |
return(-1); |
135 |
|
/* get location and spot */ |
136 |
|
if (source[sn].sflags & SDISTANT) { /* distant source */ |
137 |
|
if (source[sn].sflags & SPROX) |
138 |
|
return(-1); /* should never get here! */ |
139 |
|
multv3(nsloc, source[sn].sloc, pm); |
140 |
< |
if (nsflags & SSPOT) { |
141 |
< |
VCOPY(ourspot.aim, ocent); |
142 |
< |
ourspot.siz = PI*maxrad2; |
143 |
< |
ourspot.flen = 0.; |
138 |
< |
} |
140 |
> |
normalize(nsloc); |
141 |
> |
VCOPY(ourspot.aim, ocent); |
142 |
> |
ourspot.siz = PI*maxrad2; |
143 |
> |
ourspot.flen = 0.; |
144 |
|
if (source[sn].sflags & SSPOT) { |
140 |
– |
copystruct(&theirspot, source[sn].sl.s); |
145 |
|
multp3(theirspot.aim, source[sn].sl.s->aim, pm); |
146 |
< |
if (nsflags & SSPOT && |
147 |
< |
!commonbeam(&ourspot, &theirspot, nsloc)) |
148 |
< |
return(-1); /* no overlap */ |
146 |
> |
/* adjust for source size */ |
147 |
> |
d = sqrt(dist2(ourspot.aim, theirspot.aim)); |
148 |
> |
d = sqrt(source[sn].sl.s->siz/PI) + d*source[sn].srad; |
149 |
> |
theirspot.siz = PI*d*d; |
150 |
> |
ourspot.flen = theirspot.flen = source[sn].sl.s->flen; |
151 |
> |
d = ourspot.siz; |
152 |
> |
if (!commonbeam(&ourspot, &theirspot, nsloc)) |
153 |
> |
return(-1); /* no overlap */ |
154 |
> |
if (ourspot.siz < d-FTINY) { /* it shrunk */ |
155 |
> |
d = beamdisk(v, op, &ourspot, nsloc); |
156 |
> |
if (d <= FTINY) |
157 |
> |
return(-1); |
158 |
> |
if (d < maxrad2) { |
159 |
> |
maxrad2 = d; |
160 |
> |
VCOPY(ocent, v); |
161 |
> |
} |
162 |
> |
} |
163 |
|
} |
164 |
|
} else { /* local source */ |
165 |
|
multp3(nsloc, source[sn].sloc, pm); |
166 |
< |
if (nsflags & SSPOT) { |
167 |
< |
for (i = 0; i < 3; i++) |
168 |
< |
ourspot.aim[i] = ocent[i] - nsloc[i]; |
169 |
< |
if ((d1 = normalize(ourspot.aim)) == 0.) |
170 |
< |
return(-1); /* at source!! */ |
171 |
< |
if (source[sn].sflags & SPROX && |
172 |
< |
d1 > source[sn].sl.prox) |
173 |
< |
return(-1); /* too far away */ |
174 |
< |
ourspot.siz = 2.*PI*(1. - d1/sqrt(d1*d1+maxrad2)); |
175 |
< |
ourspot.flen = 0.; |
176 |
< |
} else if (source[sn].sflags & SPROX) { |
177 |
< |
FVECT norm; |
178 |
< |
double offs; |
161 |
< |
/* use distance from plane */ |
162 |
< |
offs = (*sfun[op->otype].of->getpleq)(norm, op); |
163 |
< |
d1 = DOT(norm, nsloc) - offs; |
164 |
< |
if (d1 < 0.) d1 = -d1; |
165 |
< |
if (d1 > source[sn].sl.prox) |
166 |
< |
return(-1); /* too far away */ |
167 |
< |
} |
166 |
> |
for (i = 0; i < 3; i++) |
167 |
> |
ourspot.aim[i] = ocent[i] - nsloc[i]; |
168 |
> |
if ((d = normalize(ourspot.aim)) == 0.) |
169 |
> |
return(-1); /* at source!! */ |
170 |
> |
if (source[sn].sflags & SPROX && d > source[sn].sl.prox) |
171 |
> |
return(-1); /* too far away */ |
172 |
> |
ourspot.flen = 0.; |
173 |
> |
/* adjust for source size */ |
174 |
> |
d = (sqrt(maxrad2) + source[sn].srad) / d; |
175 |
> |
if (d < 1.-FTINY) |
176 |
> |
ourspot.siz = 2.*PI*(1. - sqrt(1.-d*d)); |
177 |
> |
else |
178 |
> |
nsflags &= ~SSPOT; |
179 |
|
if (source[sn].sflags & SSPOT) { |
180 |
|
copystruct(&theirspot, source[sn].sl.s); |
181 |
|
multv3(theirspot.aim, source[sn].sl.s->aim, pm); |
182 |
+ |
normalize(theirspot.aim); |
183 |
|
if (nsflags & SSPOT) { |
184 |
+ |
ourspot.flen = theirspot.flen; |
185 |
+ |
d = ourspot.siz; |
186 |
|
if (!commonspot(&ourspot, &theirspot, nsloc)) |
187 |
|
return(-1); /* no overlap */ |
188 |
< |
ourspot.flen = theirspot.flen; |
188 |
> |
} else { |
189 |
> |
nsflags |= SSPOT; |
190 |
> |
copystruct(&ourspot, &theirspot); |
191 |
> |
d = 2.*ourspot.siz; |
192 |
|
} |
193 |
+ |
if (ourspot.siz < d-FTINY) { /* it shrunk */ |
194 |
+ |
d = spotdisk(v, op, &ourspot, nsloc); |
195 |
+ |
if (d <= FTINY) |
196 |
+ |
return(-1); |
197 |
+ |
if (d < maxrad2) { |
198 |
+ |
maxrad2 = d; |
199 |
+ |
VCOPY(ocent, v); |
200 |
+ |
} |
201 |
+ |
} |
202 |
|
} |
203 |
|
if (source[sn].sflags & SFLAT) { /* behind source? */ |
204 |
|
multv3(nsnorm, source[sn].snorm, pm); |
205 |
< |
if (nsflags & SSPOT && checkspot(&ourspot, nsnorm) < 0) |
205 |
> |
normalize(nsnorm); |
206 |
> |
if (nsflags & SSPOT && !checkspot(&ourspot, nsnorm)) |
207 |
|
return(-1); |
208 |
|
} |
209 |
|
} |
210 |
< |
/* everything is OK, make source */ |
211 |
< |
if ((nsn = newsource()) < 0) |
210 |
> |
/* pretest visibility */ |
211 |
> |
nsflags = vstestvis(nsflags, op, ocent, maxrad2, sn); |
212 |
> |
if (nsflags & SSKIP) |
213 |
> |
return(-1); /* obstructed */ |
214 |
> |
/* it all checks out, so make it */ |
215 |
> |
if ((i = newsource()) < 0) |
216 |
|
goto memerr; |
217 |
< |
source[nsn].sflags = nsflags; |
218 |
< |
VCOPY(source[nsn].sloc, nsloc); |
217 |
> |
source[i].sflags = nsflags; |
218 |
> |
VCOPY(source[i].sloc, nsloc); |
219 |
> |
multv3(source[i].ss[SU], source[sn].ss[SU], pm); |
220 |
> |
multv3(source[i].ss[SV], source[sn].ss[SV], pm); |
221 |
|
if (nsflags & SFLAT) |
222 |
< |
VCOPY(source[nsn].snorm, nsnorm); |
223 |
< |
source[nsn].ss = source[sn].ss; source[nsn].ss2 = source[sn].ss2; |
224 |
< |
if ((nsflags | source[sn].sflags) & SSPOT) { |
225 |
< |
if ((source[nsn].sl.s = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
222 |
> |
VCOPY(source[i].snorm, nsnorm); |
223 |
> |
else |
224 |
> |
multv3(source[i].ss[SW], source[sn].ss[SW], pm); |
225 |
> |
source[i].srad = source[sn].srad; |
226 |
> |
source[i].ss2 = source[sn].ss2; |
227 |
> |
if (nsflags & SSPOT) { |
228 |
> |
if ((source[i].sl.s = (SPOT *)malloc(sizeof(SPOT))) == NULL) |
229 |
|
goto memerr; |
230 |
< |
if (nsflags & SSPOT) |
195 |
< |
copystruct(source[nsn].sl.s, &ourspot); |
196 |
< |
else |
197 |
< |
copystruct(source[nsn].sl.s, &theirspot); |
198 |
< |
source[nsn].sflags |= SSPOT; |
230 |
> |
copystruct(source[i].sl.s, &ourspot); |
231 |
|
} |
232 |
|
if (nsflags & SPROX) |
233 |
< |
source[nsn].sl.prox = source[sn].sl.prox; |
234 |
< |
source[nsn].sa.svnext = sn; |
235 |
< |
source[nsn].so = op; |
236 |
< |
return(nsn); |
233 |
> |
source[i].sl.prox = source[sn].sl.prox; |
234 |
> |
source[i].sa.sv.sn = sn; |
235 |
> |
source[i].so = op; |
236 |
> |
return(i); |
237 |
|
memerr: |
238 |
|
error(SYSTEM, "out of memory in makevsrc"); |
239 |
|
} |
240 |
|
|
241 |
|
|
242 |
< |
commonspot(sp1, sp2, org) /* set sp1 to intersection of sp1 and sp2 */ |
243 |
< |
register SPOT *sp1, *sp2; |
244 |
< |
FVECT org; |
242 |
> |
double |
243 |
> |
getdisk(oc, op, sn) /* get visible object disk */ |
244 |
> |
FVECT oc; |
245 |
> |
OBJREC *op; |
246 |
> |
register int sn; |
247 |
|
{ |
248 |
< |
FVECT cent; |
249 |
< |
double rad2, cos1, cos2; |
250 |
< |
|
251 |
< |
cos1 = 1. - sp1->siz/(2.*PI); |
252 |
< |
cos2 = 1. - sp2->siz/(2.*PI); |
253 |
< |
if (sp2->siz >= 2.*PI-FTINY) /* BIG, just check overlap */ |
254 |
< |
return(DOT(sp1->aim,sp2->aim) >= cos1*cos2 - |
255 |
< |
sqrt((1.-cos1*cos1)*(1.-cos2*cos2))); |
256 |
< |
/* compute and check disks */ |
257 |
< |
rad2 = intercircle(cent, sp1->aim, sp2->aim, |
258 |
< |
1./(cos1*cos1) - 1., 1./(cos2*cos2) - 1.); |
259 |
< |
if (rad2 <= FTINY || normalize(cent) == 0.) |
260 |
< |
return(0); |
261 |
< |
VCOPY(sp1->aim, cent); |
262 |
< |
sp1->siz = 2.*PI*(1. - 1./sqrt(1.+rad2)); |
263 |
< |
return(1); |
248 |
> |
double rad2, roffs, offs, d, rd, rdoto; |
249 |
> |
FVECT rnrm, nrm; |
250 |
> |
/* first, use object getdisk function */ |
251 |
> |
rad2 = getmaxdisk(oc, op); |
252 |
> |
if (!(source[sn].sflags & SVIRTUAL)) |
253 |
> |
return(rad2); /* all done for normal source */ |
254 |
> |
/* check for correct side of relay surface */ |
255 |
> |
roffs = getplaneq(rnrm, source[sn].so); |
256 |
> |
rd = DOT(rnrm, source[sn].sloc); /* source projection */ |
257 |
> |
if (!(source[sn].sflags & SDISTANT)) |
258 |
> |
rd -= roffs; |
259 |
> |
d = DOT(rnrm, oc) - roffs; /* disk distance to relay plane */ |
260 |
> |
if ((d > 0.) ^ (rd > 0.)) |
261 |
> |
return(rad2); /* OK if opposite sides */ |
262 |
> |
if (d*d >= rad2) |
263 |
> |
return(0.); /* no relay is possible */ |
264 |
> |
/* we need a closer look */ |
265 |
> |
offs = getplaneq(nrm, op); |
266 |
> |
rdoto = DOT(rnrm, nrm); |
267 |
> |
if (d*d >= rad2*(1.-rdoto*rdoto)) |
268 |
> |
return(0.); /* disk entirely on projection side */ |
269 |
> |
/* should shrink disk but I'm lazy */ |
270 |
> |
return(rad2); |
271 |
|
} |
272 |
|
|
273 |
|
|
274 |
< |
commonbeam(sp1, sp2, dir) /* set sp1 to intersection of sp1 and sp2 */ |
275 |
< |
register SPOT *sp1, *sp2; |
276 |
< |
FVECT dir; |
274 |
> |
int |
275 |
> |
vstestvis(f, o, oc, or2, sn) /* pretest source visibility */ |
276 |
> |
int f; /* virtual source flags */ |
277 |
> |
OBJREC *o; /* relay object */ |
278 |
> |
FVECT oc; /* relay object center */ |
279 |
> |
double or2; /* relay object radius squared */ |
280 |
> |
register int sn; /* target source number */ |
281 |
|
{ |
282 |
< |
FVECT cent, c1, c2; |
283 |
< |
double rad2, d; |
284 |
< |
register int i; |
285 |
< |
/* move centers to common plane */ |
286 |
< |
d = DOT(sp1->aim, dir); |
287 |
< |
for (i = 0; i < 3; i++) |
288 |
< |
c1[i] = sp1->aim[i] - d*dir[i]; |
289 |
< |
d = DOT(sp2->aim, dir); |
290 |
< |
for (i = 0; i < 3; i++) |
291 |
< |
c2[i] = sp2->aim[i] - d*dir[i]; |
292 |
< |
/* compute overlap */ |
293 |
< |
rad2 = intercircle(cent, c1, c2, sp1->siz/PI, sp2->siz/PI); |
294 |
< |
if (rad2 <= FTINY) |
295 |
< |
return(0); |
296 |
< |
VCOPY(sp1->aim, cent); |
297 |
< |
sp1->siz = PI*rad2; |
298 |
< |
return(1); |
299 |
< |
} |
300 |
< |
|
256 |
< |
|
257 |
< |
checkspot(sp, nrm) /* check spotlight for behind source */ |
258 |
< |
register SPOT *sp; |
259 |
< |
FVECT nrm; |
260 |
< |
{ |
261 |
< |
double d, d1; |
262 |
< |
|
263 |
< |
d = DOT(sp->aim, nrm); |
264 |
< |
if (d > FTINY) /* center in front? */ |
265 |
< |
return(0); |
266 |
< |
/* else check horizon */ |
267 |
< |
d1 = 1. - sp->siz/(2.*PI); |
268 |
< |
return(1.-FTINY-d*d > d1*d1); |
269 |
< |
} |
270 |
< |
|
271 |
< |
|
272 |
< |
double |
273 |
< |
intercircle(cc, c1, c2, r1s, r2s) /* intersect two circles */ |
274 |
< |
FVECT cc; /* midpoint (return value) */ |
275 |
< |
FVECT c1, c2; /* circle centers */ |
276 |
< |
double r1s, r2s; /* radii squared */ |
277 |
< |
{ |
278 |
< |
double a2, d2, l; |
279 |
< |
FVECT disp; |
280 |
< |
register int i; |
281 |
< |
|
282 |
< |
for (i = 0; i < 3; i++) |
283 |
< |
disp[i] = c2[i] - c1[i]; |
284 |
< |
d2 = DOT(disp,disp); |
285 |
< |
/* circle within overlap? */ |
286 |
< |
if (r1s < r2s) { |
287 |
< |
if (r2s >= r1s + d2) { |
288 |
< |
VCOPY(cc, c1); |
289 |
< |
return(r1s); |
290 |
< |
} |
282 |
> |
RAY sr; |
283 |
> |
FVECT onorm; |
284 |
> |
FVECT offsdir; |
285 |
> |
SRCINDEX si; |
286 |
> |
double or, d; |
287 |
> |
int infront; |
288 |
> |
int stestlim, ssn; |
289 |
> |
int nhit, nok; |
290 |
> |
register int i, n; |
291 |
> |
/* return if pretesting disabled */ |
292 |
> |
if (vspretest <= 0) |
293 |
> |
return(f); |
294 |
> |
/* get surface normal */ |
295 |
> |
getplaneq(onorm, o); |
296 |
> |
/* set number of rays to sample */ |
297 |
> |
if (source[sn].sflags & SDISTANT) { |
298 |
> |
/* 32. == heuristic constant */ |
299 |
> |
n = 32.*or2/(thescene.cusize*thescene.cusize)*vspretest + .5; |
300 |
> |
infront = DOT(onorm, source[sn].sloc) > 0.; |
301 |
|
} else { |
302 |
< |
if (r1s >= r2s + d2) { |
303 |
< |
VCOPY(cc, c2); |
304 |
< |
return(r2s); |
302 |
> |
for (i = 0; i < 3; i++) |
303 |
> |
offsdir[i] = source[sn].sloc[i] - oc[i]; |
304 |
> |
d = DOT(offsdir,offsdir); |
305 |
> |
if (d <= FTINY) |
306 |
> |
n = 2.*PI * vspretest + .5; |
307 |
> |
else |
308 |
> |
n = 2.*PI * (1.-sqrt(1./(1.+or2/d)))*vspretest + .5; |
309 |
> |
infront = DOT(onorm, offsdir) > 0.; |
310 |
> |
} |
311 |
> |
if (n < MINSAMPLES) n = MINSAMPLES; |
312 |
> |
#ifdef DEBUG |
313 |
> |
fprintf(stderr, "pretesting source %d in object %s with %d rays\n", |
314 |
> |
sn, o->oname, n); |
315 |
> |
#endif |
316 |
> |
/* sample */ |
317 |
> |
or = sqrt(or2); |
318 |
> |
stestlim = n*STESTMAX; |
319 |
> |
ssn = 0; |
320 |
> |
nhit = nok = 0; |
321 |
> |
while (n-- > 0) { |
322 |
> |
/* get sample point */ |
323 |
> |
do { |
324 |
> |
if (ssn >= stestlim) { |
325 |
> |
#ifdef DEBUG |
326 |
> |
fprintf(stderr, "\ttoo hard to hit\n"); |
327 |
> |
#endif |
328 |
> |
return(f); /* too small a target! */ |
329 |
> |
} |
330 |
> |
multisamp(offsdir, 3, urand(sn*931+5827+ssn)); |
331 |
> |
for (i = 0; i < 3; i++) |
332 |
> |
offsdir[i] = or*(1. - 2.*offsdir[i]); |
333 |
> |
ssn++; |
334 |
> |
for (i = 0; i < 3; i++) |
335 |
> |
sr.rorg[i] = oc[i] + offsdir[i]; |
336 |
> |
d = DOT(offsdir,onorm); |
337 |
> |
if (infront) |
338 |
> |
for (i = 0; i < 3; i++) { |
339 |
> |
sr.rorg[i] -= (d-.0001)*onorm[i]; |
340 |
> |
sr.rdir[i] = -onorm[i]; |
341 |
> |
} |
342 |
> |
else |
343 |
> |
for (i = 0; i < 3; i++) { |
344 |
> |
sr.rorg[i] -= (d+.0001)*onorm[i]; |
345 |
> |
sr.rdir[i] = onorm[i]; |
346 |
> |
} |
347 |
> |
rayorigin(&sr, NULL, PRIMARY, 1.0); |
348 |
> |
} while (!(*ofun[o->otype].funp)(o, &sr)); |
349 |
> |
/* check against source */ |
350 |
> |
initsrcindex(&si); |
351 |
> |
si.sn = sn; |
352 |
> |
nopart(&si, sr.rorg); |
353 |
> |
samplendx++; |
354 |
> |
if (!srcray(&sr, NULL, &si) || sr.rsrc != sn) |
355 |
> |
continue; |
356 |
> |
sr.revf = srcvalue; |
357 |
> |
rayvalue(&sr); |
358 |
> |
if (bright(sr.rcol) <= FTINY) |
359 |
> |
continue; |
360 |
> |
nok++; |
361 |
> |
/* check against obstructions */ |
362 |
> |
rayclear(&sr); |
363 |
> |
sr.revf = raytrace; |
364 |
> |
rayvalue(&sr); |
365 |
> |
if (bright(sr.rcol) > FTINY) |
366 |
> |
nhit++; |
367 |
> |
if (nhit > 0 && nhit < nok) { |
368 |
> |
#ifdef DEBUG |
369 |
> |
fprintf(stderr, "\tpartially occluded\n"); |
370 |
> |
#endif |
371 |
> |
return(f); /* need to shadow test */ |
372 |
|
} |
373 |
|
} |
374 |
< |
a2 = .25*(2.*(r1s+r2s) - d2 - (r2s-r1s)*(r2s-r1s)/d2); |
375 |
< |
/* no overlap? */ |
376 |
< |
if (a2 <= 0.) |
377 |
< |
return(0.); |
378 |
< |
/* overlap, compute center */ |
379 |
< |
l = sqrt((r1s - a2)/d2); |
380 |
< |
for (i = 0; i < 3; i++) |
381 |
< |
cc[i] = c1[i] + l*disp[i]; |
382 |
< |
return(a2); |
374 |
> |
if (nhit == 0) { |
375 |
> |
#ifdef DEBUG |
376 |
> |
fprintf(stderr, "\t0%% hit rate\n"); |
377 |
> |
#endif |
378 |
> |
return(f | SSKIP); /* 0% hit rate: totally occluded */ |
379 |
> |
} |
380 |
> |
#ifdef DEBUG |
381 |
> |
fprintf(stderr, "\t100%% hit rate\n"); |
382 |
> |
#endif |
383 |
> |
return(f & ~SFOLLOW); /* 100% hit rate: no occlusion */ |
384 |
|
} |
385 |
+ |
|
386 |
|
|
308 |
– |
|
387 |
|
#ifdef DEBUG |
388 |
< |
virtverb(vs, fp) /* print verbose description of virtual source */ |
389 |
< |
register SRCREC *vs; |
388 |
> |
virtverb(sn, fp) /* print verbose description of virtual source */ |
389 |
> |
register int sn; |
390 |
|
FILE *fp; |
391 |
|
{ |
392 |
|
register int i; |
393 |
|
|
394 |
|
fprintf(fp, "%s virtual source %d in %s %s\n", |
395 |
< |
vs->sflags & SDISTANT ? "distant" : "local", |
396 |
< |
vs-source, ofun[vs->so->otype].funame, vs->so->oname); |
395 |
> |
source[sn].sflags & SDISTANT ? "distant" : "local", |
396 |
> |
sn, ofun[source[sn].so->otype].funame, |
397 |
> |
source[sn].so->oname); |
398 |
|
fprintf(fp, "\tat (%f,%f,%f)\n", |
399 |
< |
vs->sloc[0], vs->sloc[1], vs->sloc[2]); |
399 |
> |
source[sn].sloc[0], source[sn].sloc[1], source[sn].sloc[2]); |
400 |
|
fprintf(fp, "\tlinked to source %d (%s)\n", |
401 |
< |
vs->sa.svnext, source[vs->sa.svnext].so->oname); |
402 |
< |
if (vs->sflags & SFOLLOW) |
401 |
> |
source[sn].sa.sv.sn, source[source[sn].sa.sv.sn].so->oname); |
402 |
> |
if (source[sn].sflags & SFOLLOW) |
403 |
|
fprintf(fp, "\talways followed\n"); |
404 |
|
else |
405 |
|
fprintf(fp, "\tnever followed\n"); |
406 |
< |
if (!(vs->sflags & SSPOT)) |
406 |
> |
if (!(source[sn].sflags & SSPOT)) |
407 |
|
return; |
408 |
|
fprintf(fp, "\twith spot aim (%f,%f,%f) and size %f\n", |
409 |
< |
vs->sl.s->aim[0], vs->sl.s->aim[1], vs->sl.s->aim[2], |
410 |
< |
vs->sl.s->siz); |
409 |
> |
source[sn].sl.s->aim[0], source[sn].sl.s->aim[1], |
410 |
> |
source[sn].sl.s->aim[2], source[sn].sl.s->siz); |
411 |
|
} |
412 |
|
#endif |