Add sample OBJ/MTL files

samples/Wavefront Object/random.obj

@@ -0,0 +1,63 @@
+cstype bmatrix
+deg 3 3
+step 3 3
+bmat u  1  -3   3  -1 \
+        0   3  -6   3 \
+        0   0   3  -3 \
+        0   0   0   1
+
+bmat v  1  -3  -3   2 \
+        2   2   2   3 \
+        0   0   0  -2 \
+        0   0   0   2
+
+# Special point and space curve data
+vp 0.500
+vp 0.700
+vp 1.100
+vp 0.200 0.950
+v  0.300 1.500 0.100
+v  0.000  0.000  0.000
+v  1.000  1.000  0.000
+v  2.000  1.000  0.000
+v  3.000  0.000  0.000
+cstype bezier
+deg 3
+curv 0.2 0.9 -4 -3 -2 -1
+sp 1
+parm u 0.00 1.00
+end
+# Trimming curve
+vp -0.675  1.850  3.000
+vp  0.915  1.930
+vp  2.485  0.470  2.000
+vp  2.485 -1.030
+vp  1.605 -1.890 10.700
+vp -0.745 -0.654  0.500
+cstype rat bezier
+curv2 -6 -5 -4 -3 -2 -1 -6
+parm u 0.00 1.00 2.00
+sp 2 3
+end
+
+# Surface
+v -1.350 -1.030 0.000
+v  0.130 -1.030 0.432 7.600
+v  1.480 -1.030 0.000 2.300
+v -1.460  0.060 0.201
+v  0.120  0.060 0.915 0.500
+v  1.380  0.060 0.454 1.500
+v -1.480  1.030 0.000 2.300
+v  0.120  1.030 0.394 6.100
+v  1.170  1.030 0.000 3.300
+
+cstype rat bspline
+deg 2 2
+surf -1.0 2.5 -2.0 2.0 -9 -8 -7 -6 -5 -4 -3 -2 -1
+parm u -1.00 -1.00 -1.00 2.50 2.50 2.50
+parm v -2.00 -2.00 -2.00 2.00 2.00 2.00
+trim 0.0 2.0 1 2.2 2.2 3
+sp 4
+
+con 1 2.0 2.0 1 2 4.0 3.0 1
+end