| 1395 | 
  | 
by the vwright command. | 
| 1396 | 
  | 
 | 
| 1397 | 
  | 
Added DBLUR variable to ranimate and pmdblur script to handle simultaneous | 
| 1398 | 
< | 
motion and depth-of-field blurring. | 
| 1398 | 
> | 
motion and depth-of-field blurring.  Thanks to Visarc for funding this work. | 
| 1399 | 
> | 
 | 
| 1400 | 
> | 
Added setting of focus distance in rvu ("focus" command) and rholo | 
| 1401 | 
> | 
('f'/"frame" command). | 
| 1402 | 
> | 
 | 
| 1403 | 
> | 
Changed default remote shell in ranimate to "ssh" rather than "rsh", | 
| 1404 | 
> | 
which has been abandoned on most Unix systems due to security issues. | 
| 1405 | 
> | 
 | 
| 1406 | 
> | 
Fixed behavior of source primitive using illum with no alternate | 
| 1407 | 
> | 
material.  These now become transparent so one can see the sky or | 
| 1408 | 
> | 
light-probe background for use in image-based lighting.  Previously, | 
| 1409 | 
> | 
the user needed to specify the background glow as the alternate | 
| 1410 | 
> | 
material for a distant illum source to behave properly.  (This still | 
| 1411 | 
> | 
works.) | 
| 1412 | 
> | 
 | 
| 1413 | 
> | 
Fixed some minor problems and inconsistencies with 16-bit/channel | 
| 1414 | 
> | 
TIFF i/o in ra_tiff. | 
| 1415 | 
> | 
 | 
| 1416 | 
> | 
Created mksource program to generate distant sources for improved | 
| 1417 | 
> | 
image-based lighting with light probes. | 
| 1418 | 
> | 
 | 
| 1419 | 
> | 
Changed ambient calculation so that -ad will not limit recursion | 
| 1420 | 
> | 
depth, and a minimum of 27 samples will be sent out for each stored | 
| 1421 | 
> | 
ambient value, or 3 samples if -aa is 0 (caching off). | 
| 1422 | 
> | 
 | 
| 1423 | 
> | 
Added -oM option to rtrace to report material (rather than modifier) | 
| 1424 | 
> | 
for cases where actual material is aliased or further up modifier chain. | 
| 1425 | 
> | 
 | 
| 1426 | 
> | 
Rearranged the way ray contributions are computed so that it might be | 
| 1427 | 
> | 
possible to use rtrace to derive daylight coefficients and optical | 
| 1428 | 
> | 
transfer functions.  The new -oTW option of rtrace produces color | 
| 1429 | 
> | 
contribution weights for each ray, which combined with the -ti (or -tI) | 
| 1430 | 
> | 
option permits the contribution of selected surfaces or sources to | 
| 1431 | 
> | 
be determined.  Using the -oTW option, one should also specify | 
| 1432 | 
> | 
options "-dt 0 -aa 0 -as 0" for optimal results.  In particular, | 
| 1433 | 
> | 
one cannot expect reasonable tallies with -ab >= 1 and irradiance | 
| 1434 | 
> | 
caching on (-aa > 0). | 
| 1435 | 
> | 
 | 
| 1436 | 
> | 
The same code modifications included a change to the indirect computation | 
| 1437 | 
> | 
with caching switched off (-aa 0).  Whereas before, the number of secondary | 
| 1438 | 
> | 
rays after the first bounce were half of the previous generation, they are | 
| 1439 | 
> | 
now determined by the surface reflectance, making for a better and faster | 
| 1440 | 
> | 
calculation.  It should now be possible to compute many bounces with -aa 0, | 
| 1441 | 
> | 
which used to be prohibitively expensive. | 
| 1442 | 
> | 
 | 
| 1443 | 
> | 
Added -T option to xshowtrace to trace rays to light sources. | 
| 1444 | 
> | 
 | 
| 1445 | 
> | 
Added meta2bmp program to produce BMP files from metafile graphics. | 
| 1446 | 
> | 
 | 
| 1447 | 
> | 
Added cct_x(t) and cct_y(t) to src/cal/cal/blackbody.cal to interpolate | 
| 1448 | 
> | 
CIE chromaticities for particular black-body temperatures. | 
| 1449 | 
> | 
 | 
| 1450 | 
> | 
Increased maximum number of input pictures in pcomb and pcompos to 512. | 
| 1451 | 
> | 
 | 
| 1452 | 
> | 
Created rtcontrib program for computing ray contribution coefficients. | 
| 1453 | 
> | 
This tool may be used to do standard optical ray tracing or daylight | 
| 1454 | 
> | 
coefficient calculations for annual simulations, among other uses. | 
| 1455 | 
> | 
 | 
| 1456 | 
> | 
Added tilde ('~') output option as part of the -o* specification of | 
| 1457 | 
> | 
rtrace.  This permits ray trees to be parsed more easily in binary | 
| 1458 | 
> | 
output mode, as needed by rtcontrib. | 
| 1459 | 
> | 
 | 
| 1460 | 
> | 
Implemented Russian roulette ray termination with -lr <= 0. | 
| 1461 | 
> | 
Made -lr -10 the default in rtcontrib. | 
| 1462 | 
> | 
 | 
| 1463 | 
> | 
Made rtcontrib -f option search RAYPATH directories. | 
| 1464 | 
> | 
 | 
| 1465 | 
> | 
Made it so -o option of rtcontrib can pipe -o output to a command. | 
| 1466 | 
> | 
 | 
| 1467 | 
> | 
Added -if and -of options to total for binary i/o (following rcalc mold). | 
| 1468 | 
> | 
 | 
| 1469 | 
> | 
Switched default options in rtrace to use Russian roulette.  (Rpict and rvu | 
| 1470 | 
> | 
still use biased ray termination.) | 
| 1471 | 
> | 
 | 
| 1472 | 
> | 
Added rtcontrib -r option to recover partial output. |