[Excerpt from from the README in dxfconv.tar - also held at this site]

GLC file format is as below:

        Object name
        no. of polygons
        local origin (referenced from world origin, 0,0,0)
        red, green, blue
        triangle information in the following form:
                normx, normy, normz,
                x, y, z,
                normx, normy, normz,
                x, y, z,
                normx, normy, normz,
                x, y, z,
	etc...

e.g.:

foo.glc
224
-1.262558 0.000000 0.471841
255 0 0
0.000001 0.980047 0.000001
-1.262557 0.189802 0.471841
0.185628 0.887883 -0.365449
-1.226240 0.175354 0.408938
0.031647 0.887883 -0.408668
-1.253077 0.175354 0.399828
etc....

------
Ivan Logan, i.p.logan@dcs.hull.ac.uk, 8/3/95