newmtl initialShadingGroup illum 4 Kd 0.50 0.50 0.50 Ka 0.00 0.00 0.00 Tf 1.00 1.00 1.00 Ni 1.00 newmtl lambert3SG illum 4 Kd 0.12 0.02 0.01 Ka 0.00 0.00 0.00 Tf 1.00 1.00 1.00 Ni 1.00 newmtl lambert4SG illum 4 Kd 0.33 0.21 0.03 Ka 0.00 0.00 0.00 Tf 1.00 1.00 1.00 Ni 1.00 newmtl lambert5SG illum 4 Kd 0.50 0.50 0.50 Ka 0.00 0.00 0.00 Tf 0.03 0.03 0.03 Ni 1.00