Well if you're insisting, Houdini seems to follow Maya style pivoting, where 
pivot is just a position in parent space, so it can't be rotated. There are 
three parameters to control the pivot in Maya and H, not nine like in SI. Now, 
in Maya, if someone wants to override that behavior, usually it's enough to 
utilize some of always present outputs, like parent matrix or something 
directly related to pivot. Or, to constrain something else in same hierarchy, 
and connect the output of constraint node to anything else, too. Last is what I 
prefer (in Maya), anyway should be working in H with a few objects more, to 
let's say constrain another object under same hierarchy, then to use Object 
CHOP (this one is able to compare  SRTs of two objects, if I'm correct) to get 
delta.Or, to constrain the parent.

      From: Olivier Jeannel <[email protected]>
 To: Official Softimage Users Mailing List. 
https://urldefense.proofpoint.com/v2/url?u=https-3A__groups.google.com_forum_-23-21forum_xsi-5Flist&d=DwIFaQ&c=76Q6Tcqc-t2x0ciWn7KFdCiqt6IQ7a_IF9uzNzd_2pA&r=GmX_32eCLYPFLJ529RohsPjjNVwo9P0jVMsrMw7PFsA&m=UgdjjJtne_FjL2L6ah1-ncOpGPCxtx1IW3gmZkIsw6I&s=xZOz55YqRloU3GXvHFouonC13t_5NrCX6GbeMifWTAQ&e=
 <[email protected]> 
 Sent: Sunday, November 12, 2017 10:20 AM
 Subject: Re: H16 Constraint behavior
   
Example yes please ! ;)

For a "Look at", how do you set this up so that the rotation affects the pivot 
at obj level ?

   
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