README

TRANSLATORS This directory contains contributed CAD translators and image file converters for going to and from Radiance. Most of the programs should be here as compressed tar files that unpack to create a directory with the appropriate Makefile and manual page(s). By convention, CAD format translators are named something like *2rad, and usually do not perform the reverse conversion from Radiance models to the CAD system. Image file converters, on the other hand, should provide a '-r' option to go from the foreign image format to a Radiance floating point pictures. The convention for image converter names is ra_*. The following translators have been contributed so far: archicad.sea.hqx - A converter from ArchiCAD for the Mac archicad2rad.c - C program extracted from above on March 4, 1994 ## the above programs can be found at: http://www.mhri.edu.au/~pdb/macsoftware/ arris2rad.tar.gz - A converter from ARRIS to Radiance by Jean Brange stratastudio.sea.hqx - A converter from StrataStudio for the Mac dem2rad_2.0.tar.Z - A translator from Digital Elevation Maps to gensurf input dxf2rad.lisp - An AutoLISP DXF translator [uncompressed] ra2pict.tar.Z - A translator from Radiance to Macintosh PICT (forward only) ra_xim.tar.Z - A translator between Radiance pictures and Ximage format ra_rle.c - A translator from Radiance pictures to Utah RLE format sgirgb.tar.Z - Translators to and from SGI RGB image format spectra.tar.Z - Utility scripts for converting between colorspaces torad.tar.Z - An improved AutoLISP translator for Radiance webmover.c - A program to translate web pages for publication If you are planning to write a CAD format translator for Radiance, please consult the translators file in the ray/doc/notes directory of the standard Radiance distribution. If you wish to write an image converter, please avail yourself of the Radiance scanline color manipulation routines in ray/src/px and ray/src/common: color.h, resolu.h, color.c, colrops.c, header.c and resolu.c. You may use start from the ra_skel.c example converter. If you are converting to 8-bit color, you may also want to use the routines in clrtab.c. You can follow ra_t8.c as an example of 8-bit color conversion. If you are converting to some raw image format, you should check that pvalue doesn't do the conversion already.