newmtl lambert2SG illum 4 Kd 0.17 0.04 0.01 Ka 0.00 0.00 0.00 Tf 1.00 1.00 1.00 Ni 1.00 newmtl lambert3SG illum 4 Kd 0.64 0.41 0.13 Ka 0.00 0.00 0.00 Tf 1.00 1.00 1.00 Ni 1.00