Layer Manager Folding [SOLVED]

Helper

On 17/05/2016 at 20:54, xxxxxxxx wrote:

Hello Forum,

Is it possible to fold/unfold layers in the Layer Manager with Python?

Thank you,

Joe Buck

Helper

On 18/05/2016 at 02:03, xxxxxxxx wrote:

Hello,

a layer uses the bit BIT_OFOLD to control the folding status.

  
if layer.GetBit(c4d.BIT_OFOLD) == False:  
  layer.SetBit(c4d.BIT_OFOLD)  
  c4d.EventAdd()

Best wishes,
Sebastian

Helper

On 18/05/2016 at 09:26, xxxxxxxx wrote:

Hi Sebastian,

BaseList2D.GetBit() is not working as I expected in the Layer Manager or the Object Manager. No matter if the layer/object is folded, GetBit(c4d.BIT_OFOLD) always returns True.

However GeListNode.GetNBit(c4d.NBIT_OM1_FOLD) and GeListNode.ChangeNBit(c4d.NBIT_OM1_FOLD, c4d.NBITCONTROL_TOGGLE) work as expected in the Object Manager.

Do I need to somehow get the layer as a BaseList2D?

Thank you,

Joe Buck

Helper

On 19/05/2016 at 01:40, xxxxxxxx wrote:

Hello,

what Cinema 4D version do you use? The above code works fine with R17 SP2. How do you aquire the layer object?

Best wishes,
Sebastian

Helper

On 19/05/2016 at 09:13, xxxxxxxx wrote:

Hi Sebastian,

I'm using R17.032(Build RB139719).

Here is the code:

import c4d
import c4d.documents
  
  
def GetNextObject(obj, **kwargs) :
    if obj is None:
        return None
    # using stop_obj will only check a branch of the hierarchy.
    # It will not check siblings below/above stop_obj
    # if stop_obj is None, all objects below the starting
    # object will be checked.  Objects
    # above start object will not be checked.
    if "stop_obj" in kwargs:
        stop_obj = kwargs['stop_obj']
    else:
        stop_obj = None
    if obj.GetDown() :
        return obj.GetDown()
    while not obj.GetNext() and obj.GetUp() :
        obj = obj.GetUp()
        # quit searching if recursed up to stop_obj.
        if obj == stop_obj:
            return None
    # do not get sibling below if stop_obj.
    if obj == stop_obj:
            return None
    obj = obj.GetNext()
    return obj
  
  
def get_layer_by_name(doc, layer_name) :
    root = doc.GetLayerObjectRoot()
    layer = root.GetDown()
    while layer is not None:
        if layer.GetName() == layer_name:
            return layer
        layer = GetNextObject(layer)
    return None
  
  
def create_insert_layer(doc, layer_name, parent_layer=None) :
    layer = c4d.documents.LayerObject()
    if not layer:
        return None
    layer.SetName(layer_name)
    if parent_layer is not None:
        layer.InsertUnder(parent_layer)
    else:
        root = doc.GetLayerObjectRoot()
        layer.InsertUnder(root)
    return layer
  
  
def main() :
    doc = c4d.documents.GetActiveDocument()
    parent_layer = get_layer_by_name(doc, 'parent_layer')
    if not parent_layer:
        return
    doc.StartUndo()
    new_layer = create_insert_layer(doc, 'new_layer', parent_layer)
    if new_layer:
        doc.AddUndo(c4d.UNDOTYPE_NEW, new_layer)
    if parent_layer.GetBit(c4d.BIT_OFOLD) == True:
        parent_layer.ToggleBit(c4d.BIT_OFOLD)
    doc.EndUndo()
    c4d.EventAdd()
  
  
if __name__=='__main__':
    main()

This issue is not a big deal for my script. If it is taking up too much of your time, we can just let it go.

Again, thanks for your time and help.

Joe Buck

Helper

On 20/05/2016 at 00:48, xxxxxxxx wrote:

Hello,

your script works perfectly fine if you use the code I posted above.

Best wishes,
Sebastian

Helper

On 20/05/2016 at 06:54, xxxxxxxx wrote:

Sebastian,

Yes your code works fine. My bad.

if layer.GetBit(c4d.BIT_OFOLD) == True:
	# layer is unfolded
  
if layer.GetBit(c4d.BIT_OFOLD) == False:
	# layer is folded

I thought if the bit was set, the layer would be in a folded state. I did not test code with the layer unfolded.

Thank you,

Joe Buck

Helper

On 20/05/2016 at 09:22, xxxxxxxx wrote:

Here's an example that hopefully makes it clearer.
Make two layers named "L1" & "L2"
Drag L2 as a child of L1 in the Layer Manager. Then run this script.
It will make L1 fold & unfold each time the script is run.

import c4d  
def main() :  
        
  root = doc.GetLayerObjectRoot()  #Gets the layer manager  
  
  LayersList = root.GetChildren()  
  for layer in LayersList:  
      if layer.GetName() == "L1":  
          if layer.GetBit(c4d.BIT_OFOLD) == False:  
              print "Currently Folded"  
              layer.SetBit(c4d.BIT_OFOLD)     #Unfolds just the direct children of L1  
              #c4d.CallCommand(100004740)     #Unfold All Children if desired  
                
          elif layer.GetBit(c4d.BIT_OFOLD) == True:  
              print "Currently Unfolded"  
              layer.ToggleBit(c4d.BIT_OFOLD)  #Folds just the direct children of L1  
              #c4d.CallCommand(100004741)     #Fold All Children if desired  
        
  c4d.EventAdd()  
  
if __name__=='__main__':  
  main()

-ScottA

Helper

On 23/05/2016 at 12:48, xxxxxxxx wrote:

Thanks Scott! Your examples in the forum are always very helpful to me. I have read and used many.

Joe Buck