mgf2rad - convert Materials and Geometry Format file to RADIANCE description
converts one or more Materials and Geometry Format (MGF)
files to a RADIANCE scene description.
By definition, all output dimensions are in meters.
The material names and properties
for the surfaces will be those assigned in MGF.
Any materials not defined in MGF will result in an error during
Light sources are described inline as IES luminaire files, and
calls the program
to translate these files.
If an IES file in turn contains an MGF description of the local
fixture geometry, this may result in a recursive call to
which is normal and should be transparent.
The only side-effect of this additional translation is the
appearance of other RADIANCE scene and data files produced
option may be used to put all the translated materials into a separate
This is not always advisable, as any given material name may be
reused at different points in the MGF description, and writing them
to a separate file loses the contextual association between
materials and surfaces.
As long as unique material names are used throughout the MGF
description and material properties are not redefined, there
will be no problem.
Note that this is the only way to get all the translated materials
into a single file, since no output is produced for unreferenced
materials; i.e. translating just the MGF materials does not work.
option may be used to multiply all the emission values by the
option may be used to establish a glow distance (in meters)
for all emitting surfaces.
These two options are employed principally by
and are not generally useful to most users.
To translate two MGF files into one RADIANCE materials file and
one geometry file:
mgf2rad -m materials.rad building1.mgf building2.mgf > building1+2.rad
To create an octree directly from two MGF files and one RADIANCE
oconv '\!mgf2rad materials.mgf scene.mgf' source.rad > scene.oct
- Used to smooth polygonal geometry
- RADIANCE source descriptions created by ies2rad
- RADIANCE source data created by ies2rad
- Used for IES source coordinates