The Materials and Geometry Format
Version 1.1, January 1996
Lawrence Berkeley Laboratory,
The Materials and Geometry Format (referred to henceforth as MGF)
is a description language for 3-dimensional environments expressly
suited to visible light simulation and rendering.
The materials are physically-based and rely on standard and
well-accepted definitions of color, reflectance and transmittance
for good accuracy and reproducibility.
The geometry is based on boundary representation using simple
geometric primitives such as polygons, spheres and cones.
The file format itself is terse but human-readable ASCII text.