Hello Vince,
I have tested the obj export option from Blender with two different approaches:
obj2mesh
obj2mesh Untitled.obj > b.rtm
Created the simple b-head.rad file:
void plastic tiled_mat
0
0
5 0.4 0.4 -0.4 0 0
tiled_mat mesh tiled_mesh
1 b.rtm
0
0
Then to view the rad file I used:
objview b-head.rad
obj2rad. This gives more control over materials.
To get the list of materials used in the obj file use the -n option in obj2rad:
obj2rad -n Untitled.obj > a.mat
Modify the mat file with actual radiance material definitions. See an old discourse post on “Conversion of obj files” for some basic information to interpret the mtl file. As far as I can see there is no automatic conversion tools from mtl to radiance material definitions.:
Create the rad file:
obj2rad -m a.mat Untitled.obj > a.rad
Then to view the rad file I used:
objview a.mat a.rad
Kind Regards
Terrance McMinn