| 1600 |  | Changed default sky turbidity in gensky from the original default of | 
| 1601 |  | 2.75 to the CIE 110-1994 standard value of 2.45.  Thanks to Marilyne | 
| 1602 |  | Anderson of MIT for pointing out this discrepancy. | 
| 1603 | + |  | 
| 1604 | + | Added -o option to ra_xyze to produce original pixel values. | 
| 1605 | + |  | 
| 1606 | + | Fixed bug in tracing of virtual sources, where intervening glazing was | 
| 1607 | + | not being accounted for properly. | 
| 1608 | + |  | 
| 1609 | + | Added -h option to pcompos and pcomb to eliminate verbose headers. | 
| 1610 | + |  | 
| 1611 | + | ===================== | 
| 1612 | + | Version 3.9 | 
| 1613 | + |  | 
| 1614 | + | Added -spec option to falsecolor to restore original spectral color scale. | 
| 1615 | + | Also added "-s auto" option to automatically set the maximum value. | 
| 1616 | + |  | 
| 1617 | + | Added byte-swapping input and output to rcalc. | 
| 1618 | + |  | 
| 1619 | + | Additional error-checking for source surfaces. | 
| 1620 | + |  | 
| 1621 | + | Re-fixed bug in octree code that caused it to allocate 8 times as | 
| 1622 | + | much memory as it actually used(!) -- this was pointed out way back | 
| 1623 | + | in 1999 by Erik Reinhard and Erik Jansen, but the fix they gave me | 
| 1624 | + | got lost in the slightly broken release process at the time.  This | 
| 1625 | + | should make a big difference in memory usage, especially for the | 
| 1626 | + | new mesh primitive.  (I measured 30% less memory usage.) | 
| 1627 | + |  | 
| 1628 | + | Corrected ray weights for material mixtures. | 
| 1629 | + |  | 
| 1630 | + | Reduced the default -n setting for obj2mesh to take better advantage | 
| 1631 | + | of the smaller octree structure size. | 
| 1632 | + |  | 
| 1633 | + | Fixed bug in shadow cache where it was adding surfaces with antimatter | 
| 1634 | + | holes cut in them to the obstructor list.  Thanks to John Mardaljevic | 
| 1635 | + | for discovering and reporting the problem. | 
| 1636 | + |  | 
| 1637 | + | Adding ability in mkillum to incorporate BSDF data in calculation. | 
| 1638 | + | Internal interface (raypcalls) now used in place of rtrace process(es). | 
| 1639 | + |  | 
| 1640 | + | Fixed pixel alignment in pcomb for size reduction and enlargement. | 
| 1641 | + |  | 
| 1642 | + | Allow rtcontrib user to set -P and -PP options for persistent rendering. | 
| 1643 | + | The only caveat is that -n setting > 1 requires -PP rather than -P. | 
| 1644 | + |  | 
| 1645 | + | Added -c option to rtcontrib to facilitate cumulative calculations. | 
| 1646 | + |  | 
| 1647 | + | Added ability to incorporate LBNL Window 6 bidirectional scattering | 
| 1648 | + | distribution function (BSDF) data in mkillum. | 
| 1649 | + |  | 
| 1650 | + | ****** COMPATIBILITY CHANGE ******** | 
| 1651 | + | Fixed long-standing bug in source.cal, which caused it to produce | 
| 1652 | + | reversed anisotropic photometric distributions due to the | 
| 1653 | + | misorientation of the y-axis.  Thanks to Zack Rogers for discovering | 
| 1654 | + | and helping debug this problem. | 
| 1655 | + |  | 
| 1656 | + | Fixed long-standing bug in replmarks, where triangles with X-side | 
| 1657 | + | aligned with Z-axis would cause incorrect rotations.  Thanks to | 
| 1658 | + | Zack Rogers for finding this error. | 
| 1659 | + |  | 
| 1660 | + | Added rsensor program to compute sensor signal for daylighting controls. | 
| 1661 | + | Funding for this component was provided by the Architectural Energy | 
| 1662 | + | Corporation in Boulder, CO, and directed by Zack Rogers. | 
| 1663 | + |  | 
| 1664 | + | Added "planisphere" (stereographic) fisheye view type for traditional | 
| 1665 | + | daylighting analysis.  Feature requested & explained by Axel Jacobs. |