| 1929 |  |  | 
| 1930 |  | Changed image-plane sampling in rpict to use Hilbert curve, which gives | 
| 1931 |  | less of a brushed/striped appearance to output pixels with -u- (default). | 
| 1932 | + |  | 
| 1933 | + | Added ltview and ltpict Perl scripts contributed by Axel Jacobs, inspired | 
| 1934 | + | by Rob Guglielmetti. | 
| 1935 | + |  | 
| 1936 | + | Added header variables for NROWS, NCOLS and NCOMP to help standardize | 
| 1937 | + | matrix files.  This functionality has been incorporated into | 
| 1938 | + | rcollate, gendaymtx, and dctimestep. | 
| 1939 | + |  | 
| 1940 | + | Created rmtxop utility to operate on multi-component matrices.  This | 
| 1941 | + | facilitates some daylight matrix calculations, and provides a general | 
| 1942 | + | tool for manipulating matrix data. | 
| 1943 | + |  | 
| 1944 | + | ****** COMPATIBILITY CHANGE ******** | 
| 1945 | + | Introduced new Hessian-based error control in irradiance caching (ambient) | 
| 1946 | + | calculation.  Since the format of the stored ambient values is different, | 
| 1947 | + | the old files will be rejected with an error message and must be removed. | 
| 1948 | + | The programs may be compiled with the -DOLDAMB option if this is a problem. | 
| 1949 | + |  | 
| 1950 | + | Added -p option to rcontrib to set function file parameters on a per-modifier | 
| 1951 | + | basis to simplify bin evaluation. | 
| 1952 | + |  | 
| 1953 | + | Created rfluxmtx program to compute flux transfer matrices from a sender | 
| 1954 | + | surface to one or more receiver surfaces.  (Renamed the file klems_int.cal | 
| 1955 | + | to klems_full.cal in the process.) |