[Bf-python] Re: Constraints module

[Ken Hughes]

Ok, working somewhat from Joseph's Constraint code and from the recent 
Modifiers code, I'm going to try putting together a wrapper for 
Constraints starting today.  My plan is to start by adding an attribute 
called "constraints" to BPy_Object and BPy_PoseBone which is a sequence 
wrapper for a BPy_Constaint type.  The BPy_Constraint type will have 
"name" and "type" attributes and use a mapping operator [] to get/set 
values for each partcular constraint type.  For starters, I'll implement 
IK Solver and Action Constraints, then add the rest of the Constaint 
types (IK and Action will only be avaibable for PoseBone constraints).

Based on my current understanding of poses/actions/NLAs/constrints 
(which is still limited), I haven't looked at the relation of constraint 
channel IPOs to this.  I believe this capability is somewhat implemented 
through the Armatute.NLA API, but if not I'm not addressing it for now.

I plan to post the initial work to the patch tracker for people to test 
and give feedback on, then when it seems stable commit to the tree (or 
throw away if it's totally off-base, whatever :) ).

Sound OK?  Comments?

Ken