Folding an object in the Object Manager

Helper

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On 04/06/2012 at 18:38, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   13
Platform:      Mac OSX ;
Language(s) :       PYTHON ;

---------
I'm trying to force the folding of an object with children, in the Object Manager.
I tried it in COFFEE and it didn't work.
Now I was trying to do it in Python and it seems that it doesn't work either
I tried with:

op.SetBit(BIT_OFOLD)

and with

op.SetBit(NBIT_OM1_FOLD)

But nothing happens. Is it also not possible with Python?

Rui Batista

Helper

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On 05/06/2012 at 00:25, xxxxxxxx wrote:

Have You tried 'GeListNode.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_SET)' in Python?

Cheers
Peter

Helper

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On 05/06/2012 at 03:28, xxxxxxxx wrote:

How should I apply it?
Like this?

op.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_SET)

If it is, it is still not working

Helper

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On 05/06/2012 at 03:54, xxxxxxxx wrote:

It's necessary to inform the manager about the update with an EventAdd().

Toggles the fold state:

  
op.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_TOGGLE)  
op.Message(c4d.MSG_CHANGE)  
c4d.EventAdd()

cheers,
Matthias

Helper

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On 05/06/2012 at 04:21, xxxxxxxx wrote:

Well, what I'm trying to achieve is an object that folds itself as soon as an object is dropped in or outside it.
For that, I created a Python Generator with the following code:

  
old_childs=0   
  
import c4d   
#Welcome to the world of Python   
  
def main() :   
    global old_childs   
    childs=0   
    current=op.GetDown()   
    if current is None: return   
       
    while current is not None:   
        childs=childs+1   
        current=current.GetNext()   
       
    if childs==old_childs: return   
    old_childs=childs   
    op.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_SET)   
    op.Message(c4d.MSG_CHANGE)   
    c4d.EventAdd()   
    return c4d.BaseObject(c4d.Onull)

But it is not working. Could it be because the object is trying to fold itself?

Helper

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On 05/06/2012 at 05:23, xxxxxxxx wrote:

A bit confusing, but the clear bit folds the object.

Example for Python generator:

  
import c4d  
#Welcome to the world of Python  
  
  
def main() :  
  op.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_CLEAR)  
  op.Message(c4d.MSG_CHANGE)  
  c4d.EventAdd()  
   
  return c4d.BaseObject(c4d.Ocube)

Personally I think it's not a good idea to do and I'm not sure if it's thread safe etc.

cheers,
Matthias

Helper

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On 05/06/2012 at 05:37, xxxxxxxx wrote:

Weird!! I would assume that to fold we would need to SET the bit.
This is for a Vault object - I would place in it objects that I want to keep but that I currently don't need.
It will only fold when objects are added or removed from it. But I can still fold/unfold it manually.
Thank you very much for your help, Matthias.

Rui Batista

Helper

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On 05/06/2012 at 05:57, xxxxxxxx wrote:

This should work in an Python Expression Tag.
Let me know.
Should you need to do this via a Command script,
you would need to store the childcount in the parent object
itself, using a unique ID from PlugIn Cafe'.

Cheers
Lennart

  
import c4d   
  
childcountmemo = 0   
  
def main() :   
    global childcountmemo   
    obj = op.GetObject()   
    obj[c4d.TPYTHON_RESET] = False # Turn off 'Reset on Frame 0'   
    obj[c4d.TPYTHON_FRAME] = False # and 'Frame Dependent'   
    childcount = len(obj.GetChildren())   
       
    if childcount != childcountmemo and obj.GetNBit(c4d.NBIT_OM1_FOLD) :   
        obj.ChangeNBit(c4d.NBIT_OM1_FOLD,c4d.NBITCONTROL_CLEAR)   
          
    childcountmemo = childcount