Select the Children of a Selected Object. Then, Store it in a List
bentraje last edited by
I have a joint chain of
shoulder_jnt > elbow_jnt > wrist_jnt
I want it to store it in a list. Here is the code so far:
def GetObjects(obj): objList = [obj] for kid in obj.GetChildren(): GetObjects(kid) objList += kid return objList # should return the parent/selected obejct and all its chidlren test = doc.SearchObject("shoulder_jnt") ikJointChain = GetObjects(test)
It gives me an error of
Traceback (most recent call last): File "scriptmanager", line 9, in <module> File "scriptmanager", line 4, in GetObjects File "scriptmanager", line 5, in GetObjects TypeError: 'c4d.modules.character.CAJointObject' object is not iterable
The code is modified from this post:
There is also another code in that post, but I can't really understand it.
So I chose the most simpler one.
Thank you for looking at the problem.
mp5gosu last edited by mp5gosu
SearchObject() returns a single BaseObject.
You might want to create a dedicated function that walks through your document and returns a list with all the filtered objects.
Unfortunately, there's no function that I know of, that automatically does what you want.
To iterate hierarchies, see this blogpost (this is about the code in the thread you linked).
Those are helper functions, you should always use them, when it comes to hierarchies.
Cairyn last edited by Cairyn
Your two lines
GetObjects(kid) objList += kid
make no sense. The first one calls the recursion but then throws the result away as it is not stored anywhere (objList is a local variable for the function, not a global, and does not exist beyond the context of the current method execution). The second tries to extend a list by a single object instead of another list (the operator += works like extend, not like append) and fails because it cannot iterate through a single object. (Even if you had used the append method or listified kid it would still fail logically because you have already added the kid in the recursion call and then threw it all away.)
What you need to do is extend the local objList by the result list of the recursion call:
objList += GetObjects(kid)
or in context,
import c4d from c4d import gui def GetObjects(obj): objList = [obj] for kid in obj.GetChildren(): objList += GetObjects(kid) return objList # should return the parent/selected obejct and all its chidlren def main(): test = doc.SearchObject("shoulder_jnt") ikJointChain = GetObjects(test) print ikJointChain if __name__=='__main__': main()
bentraje last edited by
Thanks for the response and for the link regarding recursive and nonrecusive distinction, but I think the recursive version is shorter to write
Thanks for the revised script. Works as expected. To be honest, I really do not know Python in C4D per se. I'm just winging it. Hahaha.
So, thanks for the explanation!