| 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 (j = fa->nv-1, i = 0; i < fa->nv; j = i++) { |
| 71 |
> |
u[0] = VERTEX(fa,i)[0] - VERTEX(fa,j)[0]; |
| 72 |
> |
u[1] = VERTEX(fa,i)[1] - VERTEX(fa,j)[1]; |
| 73 |
> |
u[2] = VERTEX(fa,i)[2] - VERTEX(fa,j)[2]; |
| 74 |
> |
if ((r1 = DOT(u,u)) >= fa->area-FTINY) |
| 75 |
> |
break; |
| 76 |
> |
} |
| 77 |
> |
if (i < fa->nv) { /* got one! -- let's align our axes */ |
| 78 |
> |
r2 = 1.0/sqrt(r1); |
| 79 |
> |
u[0] *= r2; u[1] *= r2; u[2] *= r2; |
| 80 |
> |
fcross(v, fa->norm, u); |
| 81 |
> |
} else /* oh well, we'll just have to wing it */ |
| 82 |
> |
mkaxes(u, v, fa->norm); |
| 83 |
> |
/* now, find limits in (u,v) coordinates */ |
| 84 |
|
ur[0] = vr[0] = FHUGE; |
| 85 |
|
ur[1] = vr[1] = -FHUGE; |
| 86 |
|
for (i = 0; i < fa->nv; i++) { |
| 101 |
|
h = ilhash(dim, 3) + i; |
| 102 |
|
multisamp(sp, 2, urand(h)); |
| 103 |
|
r1 = (dim[1] + sp[0])/nalt; |
| 104 |
< |
r2 = (dim[2] + sp[1])/nazi; |
| 104 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
| 105 |
|
flatdir(dn, r1, r2); |
| 106 |
|
for (j = 0; j < 3; j++) |
| 107 |
|
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*fa->norm[j]; |
| 133 |
|
if (il->sampdens > 0) |
| 134 |
|
flatout(il, distarr, nalt, nazi, u, v, fa->norm); |
| 135 |
|
illumout(il, ob); |
| 136 |
< |
} else if (!(il->flags & IL_LIGHT)) |
| 136 |
> |
} else |
| 137 |
|
printobj(il->altmat, ob); |
| 138 |
|
/* clean up */ |
| 139 |
|
freeface(ob); |
| 179 |
|
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
| 180 |
|
/* random direction */ |
| 181 |
|
r1 = (dim[1] + sp[0])/nalt; |
| 182 |
< |
r2 = (dim[2] + sp[1])/nazi; |
| 182 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
| 183 |
|
rounddir(dir, r1, r2); |
| 184 |
|
/* random location */ |
| 185 |
|
mkaxes(u, v, dir); /* yuck! */ |
| 204 |
|
else |
| 205 |
|
objerror(ob, WARNING, "diffuse distribution"); |
| 206 |
|
illumout(il, ob); |
| 207 |
< |
} else if (!(il->flags & IL_LIGHT)) |
| 207 |
> |
} else |
| 208 |
|
printobj(il->altmat, ob); |
| 209 |
|
/* clean up */ |
| 210 |
|
free((char *)distarr); |
| 249 |
|
multisamp(sp, 4, urand(ilhash(dim,3)+i)); |
| 250 |
|
/* random direction */ |
| 251 |
|
r1 = (dim[1] + sp[0])/nalt; |
| 252 |
< |
r2 = (dim[2] + sp[1])/nalt; |
| 252 |
> |
r2 = (dim[2] + sp[1] - .5)/nazi; |
| 253 |
|
flatdir(dn, r1, r2); |
| 254 |
|
for (j = 0; j < 3; j++) |
| 255 |
|
dir[j] = -dn[0]*u[j] - dn[1]*v[j] - dn[2]*co->ad[j]; |
| 260 |
|
r1 = r3*cos(r2); |
| 261 |
|
r2 = r3*sin(r2); |
| 262 |
|
for (j = 0; j < 3; j++) |
| 263 |
< |
org[j] = CO_P0(co)[j] + r1*u[j] + r1*v[j] + |
| 263 |
> |
org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j] + |
| 264 |
|
.001*co->ad[j]; |
| 265 |
|
|
| 266 |
|
/* send sample */ |
| 272 |
|
if (il->sampdens > 0) |
| 273 |
|
flatout(il, distarr, nalt, nazi, u, v, co->ad); |
| 274 |
|
illumout(il, ob); |
| 275 |
< |
} else if (!(il->flags & IL_LIGHT)) |
| 275 |
> |
} else |
| 276 |
|
printobj(il->altmat, ob); |
| 277 |
|
/* clean up */ |
| 278 |
|
freecone(ob); |
| 304 |
|
if (rt->nrays <= 0) |
| 305 |
|
return; |
| 306 |
|
bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
| 307 |
+ |
errno = 0; |
| 308 |
|
if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
| 309 |
|
3*sizeof(float)*rt->nrays, |
| 310 |
|
6*sizeof(float)*(rt->nrays+1)) < |
