matrix oppretransform(string path)
matrix oppretransform(string path, float time)
matrix oppretransform(int opid)
matrix oppretransform(int opid, float time)
Returns the transform associated with an OP. If the OP specified has no transform associated with it (for example a COP), then an identity matrix is returned. It is possible to specify the time to evaluate the transform at (in seconds, not frames).
The op: syntax can be used to simulate this behavior using the standard transform functions.