206 |
|
b = 1.0/ndivs; |
207 |
|
scalecolor(acol, b); |
208 |
|
if (arad <= FTINY) |
209 |
– |
arad = FHUGE; |
210 |
– |
else |
211 |
– |
arad = (ndivs+ns)/arad; |
212 |
– |
if (arad > maxarad) |
209 |
|
arad = maxarad; |
210 |
< |
else if (arad < minarad) |
210 |
> |
else { |
211 |
> |
arad = (ndivs+ns)/arad; |
212 |
> |
if (arad > maxarad) |
213 |
> |
arad = maxarad; |
214 |
> |
} |
215 |
> |
if (pg != NULL) { /* reduce radius if gradient large */ |
216 |
> |
d = DOT(pg,pg); |
217 |
> |
if (d*arad*arad > 1.0) |
218 |
> |
arad = 1.0/sqrt(d); |
219 |
> |
} |
220 |
> |
if (arad < minarad) { |
221 |
|
arad = minarad; |
222 |
< |
arad /= sqrt(wt); |
223 |
< |
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); |
222 |
> |
if (pg != NULL && d*arad*arad > 1.0) { /* cap gradient */ |
223 |
> |
d = 1.0/arad/sqrt(d); |
224 |
|
for (i = 0; i < 3; i++) |
225 |
|
pg[i] *= d; |
226 |
|
} |
227 |
|
} |
228 |
< |
return(arad); |
228 |
> |
return(arad/sqrt(wt)); |
229 |
|
oopsy: |
230 |
|
if (div != NULL) |
231 |
|
free((char *)div); |
336 |
|
if (i > 0) { |
337 |
|
d = dp[-hp->np].r; |
338 |
|
if (dp[0].r > d) d = dp[0].r; |
339 |
< |
d *= 1.0 - sqrt((double)i/hp->nt); |
339 |
> |
d *= 1.0 - (double)i/hp->nt; /* cos(t)^2 */ |
340 |
|
mag0 += d*(b - bright(dp[-hp->np].v)); |
341 |
|
} |
342 |
|
if (j > 0) { |
384 |
|
error(CONSISTENCY, |
385 |
|
"division order in dirgradient"); |
386 |
|
#endif |
387 |
< |
mag += sqrt((i+.5)/hp->nt)*bright(dp->v); |
387 |
> |
mag += sqrt((i+.5)/hp->nt)*bright(dp->v); /* sin(t) */ |
388 |
|
dp += hp->np; |
389 |
|
} |
390 |
|
phi = 2.0*PI * (j+.5)/hp->np + PI/2.0; |