# a sample file of patches. any line that does not contain three
# floats is ignored, and any set of four successive 3-float lines
# form one bi-linear patch

-1 -1 0
2 -1 0
-1 2 0
2 2 .1

0 0 -.02
1 0 -.02
0 1 -.02
1 1 -.1

