xenial (1) rad2mgf.1.gz

NAME

       rad2mgf - convert RADIANCE scene description to Materials and Geometry Format

SYNOPSIS

       rad2mgf [ -dU ] [ input ..  ]

DESCRIPTION

       Rad2mgf  converts  one  or  more  RADIANCE scene files to the Materials and Geometry Format (MGF).  Input
       units are specified with the -mU option, where U is one of 'm' (meters), 'c' (centimeters), 'f' (feet) or
       'i'  (inches).   The  assumed unit is meters, which is the required output unit for MGF (thus the need to
       know).  If the input dimensions are in none of these units, then the user should apply xform(1) with  the
       -s option to bring the units into line prior to translation.

       The  MGF  material  names  and  properties  for  the  surfaces  will be those assigned in RADIANCE.  If a
       referenced material has not been defined, then its name  will  be  invoked  in  the  MGF  output  without
       definition, and the description will be incomplete.

LIMITATIONS

       Although  MGF  supports  all  of the geometric types and the most common material types used in RADIANCE,
       there is currently no support for advanced BRDF materials, patterns, textures  or  mixtures.   Also,  the
       special  types  "source" and "antimatter" are not supported, and all light source materials are converted
       to simple diffuse emitters (except "illum" materials, which are converted to  their  alternates).   These
       primitives are reproduced as comments in the output and must be replaced manually if necessary.

       The RADIANCE "instance" and "mesh" types aretreated specially.  Rad2mgf converts each instance or mesh to
       an MGF include statement, using the corresponding transformation and a file name derived from the  octree
       or  mesh name.  (The original octree/mesh suffix is replaced by ".mgf".)  For this to work, the user must
       separately create the referenced MGF files from the original RADIANCE descriptions.  The description file
       names can usually be determined using the getinfo(1) command run on the octrees in question.

EXAMPLE

       To convert three RADIANCE files (in feet) to one MGF file:

         rad2mgf -df file1.rad file2.rad file3.rad > scene.mgf

       To translate a RADIANCE materials file to MGF:

         rad2mgf materials.rad > materials.mgf

AUTHOR

       Greg Ward

SEE ALSO

       getinfo(1), ies2rad(1), mgf2meta(1), mgf2rad(1), obj2rad(1), oconv(1), xform(1)

       MGF web site "http://radsite.lbl.gov/mgf/HOME.html"