# catmull_udf_1
# written by John Dannenhoffer

# basic shape
BOX       -2.0  1.0  0.0  1.0  1.0  1.0
BOX       -1.0  1.0  0.0  1.0  1.0  1.0
UNION
STORE     BasicShape

# original shape
RESTORE   BasicShape
UDPRIM    catmull   nsubdiv 0
TRANSLATE -2.0  +2.0  0.0

# one subdivision
RESTORE   BasicShape
UDPRIM    catmull
TRANSLATE +2.0  +2.0  0.0

# two subdivisions
RESTORE   BasicShape
UDPRIM    catmull   nsubdiv 2
TRANSLATE -2.0  -2.0  0.0

# three subdivisions
RESTORE   BasicShape
UDPRIM    catmull   nsubdiv 3
TRANSLATE +2.0  -2.0  0.0

END