| 209 |
|
arad = FHUGE; |
| 210 |
|
else |
| 211 |
|
arad = (ndivs+ns)/arad; |
| 212 |
+ |
if (pg != NULL) { /* reduce radius if gradient large */ |
| 213 |
+ |
d = DOT(pg,pg); |
| 214 |
+ |
if (d*arad*arad > 1.0) |
| 215 |
+ |
arad = 1.0/sqrt(d); |
| 216 |
+ |
} |
| 217 |
|
if (arad > maxarad) |
| 218 |
|
arad = maxarad; |
| 219 |
|
else if (arad < minarad) |
| 220 |
|
arad = minarad; |
| 221 |
< |
arad /= sqrt(wt); |
| 217 |
< |
if (pg != NULL) { /* clip pos. gradient if too large */ |
| 218 |
< |
d = 4.0*DOT(pg,pg)*arad*arad; |
| 219 |
< |
if (d > 1.0) { |
| 220 |
< |
d = 1.0/sqrt(d); |
| 221 |
< |
for (i = 0; i < 3; i++) |
| 222 |
< |
pg[i] *= d; |
| 223 |
< |
} |
| 224 |
< |
} |
| 225 |
< |
return(arad); |
| 221 |
> |
return(arad/sqrt(wt)); |
| 222 |
|
oopsy: |
| 223 |
|
if (div != NULL) |
| 224 |
|
free((char *)div); |
| 329 |
|
if (i > 0) { |
| 330 |
|
d = dp[-hp->np].r; |
| 331 |
|
if (dp[0].r > d) d = dp[0].r; |
| 332 |
< |
d *= 1.0 - sqrt((double)i/hp->nt); |
| 332 |
> |
d *= 1.0 - (double)i/hp->nt; /* cos(t)^2 */ |
| 333 |
|
mag0 += d*(b - bright(dp[-hp->np].v)); |
| 334 |
|
} |
| 335 |
|
if (j > 0) { |
| 377 |
|
error(CONSISTENCY, |
| 378 |
|
"division order in dirgradient"); |
| 379 |
|
#endif |
| 380 |
< |
mag += sqrt((i+.5)/hp->nt)*bright(dp->v); |
| 380 |
> |
mag += sqrt((i+.5)/hp->nt)*bright(dp->v); /* sin(t) */ |
| 381 |
|
dp += hp->np; |
| 382 |
|
} |
| 383 |
|
phi = 2.0*PI * (j+.5)/hp->np + PI/2.0; |
