26 |
|
sprintf(errmsg, "(%s): cannot make illum for %s \"%s\"", |
27 |
|
nm, ofun[ob->otype].funame, ob->oname); |
28 |
|
error(WARNING, errmsg); |
29 |
< |
if (!(il->flags & IL_LIGHT)) |
30 |
< |
printobj(il->altmat, ob); |
29 |
> |
printobj(il->altmat, ob); |
30 |
|
} |
31 |
|
|
32 |
|
|
66 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
67 |
|
if (distarr == NULL) |
68 |
|
error(SYSTEM, "out of memory in o_face"); |
69 |
< |
mkaxes(u, v, fa->norm); |
69 |
> |
/* take first edge longer than sqrt(area) */ |
70 |
> |
for (i = 1; i < fa->nv; i++) { |
71 |
> |
for (j = 0; j < 3; j++) |
72 |
> |
u[j] = VERTEX(fa,i)[j] - VERTEX(fa,i-1)[j]; |
73 |
> |
if (DOT(u,u) >= fa->area-FTINY) |
74 |
> |
break; |
75 |
> |
} |
76 |
> |
if (i < fa->nv) { /* got one! -- let's align our axes */ |
77 |
> |
normalize(u); |
78 |
> |
fcross(v, fa->norm, u); |
79 |
> |
} else /* oh well, we'll just have to wing it */ |
80 |
> |
mkaxes(u, v, fa->norm); |
81 |
> |
/* now, find limits in (u,v) coordinates */ |
82 |
|
ur[0] = vr[0] = FHUGE; |
83 |
|
ur[1] = vr[1] = -FHUGE; |
84 |
|
for (i = 0; i < fa->nv; i++) { |
99 |
|
h = ilhash(dim, 3) + i; |
100 |
|
multisamp(sp, 2, urand(h)); |
101 |
|
r1 = (dim[1] + sp[0])/nalt; |
102 |
< |
r2 = (dim[2] + sp[1])/nazi; |
102 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
103 |
|
flatdir(dn, r1, r2); |
104 |
|
for (j = 0; j < 3; j++) |
105 |
|
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*fa->norm[j]; |
127 |
|
} |
128 |
|
rayflush(rt); |
129 |
|
/* write out the face and its distribution */ |
130 |
< |
average(il, distarr, nalt*nazi); |
131 |
< |
if (il->sampdens > 0) |
132 |
< |
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
133 |
< |
illumout(il, ob); |
130 |
> |
if (average(il, distarr, nalt*nazi)) { |
131 |
> |
if (il->sampdens > 0) |
132 |
> |
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
133 |
> |
illumout(il, ob); |
134 |
> |
} else |
135 |
> |
printobj(il->altmat, ob); |
136 |
|
/* clean up */ |
137 |
|
freeface(ob); |
138 |
|
free((char *)distarr); |
177 |
|
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
178 |
|
/* random direction */ |
179 |
|
r1 = (dim[1] + sp[0])/nalt; |
180 |
< |
r2 = (dim[2] + sp[1])/nazi; |
180 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
181 |
|
rounddir(dir, r1, r2); |
182 |
|
/* random location */ |
183 |
|
mkaxes(u, v, dir); /* yuck! */ |
196 |
|
} |
197 |
|
rayflush(rt); |
198 |
|
/* write out the sphere and its distribution */ |
199 |
< |
average(il, distarr, nalt*nazi); |
200 |
< |
if (il->sampdens > 0) |
201 |
< |
roundout(il, distarr, nalt, nazi); |
202 |
< |
else |
203 |
< |
objerror(ob, WARNING, "diffuse distribution"); |
204 |
< |
illumout(il, ob); |
199 |
> |
if (average(il, distarr, nalt*nazi)) { |
200 |
> |
if (il->sampdens > 0) |
201 |
> |
roundout(il, distarr, nalt, nazi); |
202 |
> |
else |
203 |
> |
objerror(ob, WARNING, "diffuse distribution"); |
204 |
> |
illumout(il, ob); |
205 |
> |
} else |
206 |
> |
printobj(il->altmat, ob); |
207 |
|
/* clean up */ |
208 |
|
free((char *)distarr); |
209 |
|
} |
247 |
|
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
248 |
|
/* random direction */ |
249 |
|
r1 = (dim[1] + sp[0])/nalt; |
250 |
< |
r2 = (dim[2] + sp[1])/nalt; |
250 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
251 |
|
flatdir(dn, r1, r2); |
252 |
|
for (j = 0; j < 3; j++) |
253 |
|
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*co->ad[j]; |
266 |
|
} |
267 |
|
rayflush(rt); |
268 |
|
/* write out the ring and its distribution */ |
269 |
< |
average(il, distarr, nalt*nazi); |
270 |
< |
if (il->sampdens > 0) |
271 |
< |
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
272 |
< |
illumout(il, ob); |
269 |
> |
if (average(il, distarr, nalt*nazi)) { |
270 |
> |
if (il->sampdens > 0) |
271 |
> |
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
272 |
> |
illumout(il, ob); |
273 |
> |
} else |
274 |
> |
printobj(il->altmat, ob); |
275 |
|
/* clean up */ |
276 |
|
freecone(ob); |
277 |
|
free((char *)distarr); |
302 |
|
if (rt->nrays <= 0) |
303 |
|
return; |
304 |
|
bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
305 |
+ |
errno = 0; |
306 |
|
if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
307 |
|
3*sizeof(float)*rt->nrays, |
308 |
|
6*sizeof(float)*(rt->nrays+1)) < |