Iterate works with firstobject, not with tagobject

On 30/10/2014 at 08:58, xxxxxxxx wrote:

Hi,

I have a project which contains these methods:

def GetNextObject(self, op) :
      if op == None:
          return None

if op.GetDown() :
          return op.GetDown()

while not op.GetNext() and op.GetUp() :
          op = op.GetUp()

return op.GetNext()

def IterateHierarchy(self, op) :
      if op is None:
          return

count = 0

while op:
          count += 1
          print op.GetName()
          op = self.GetNextObject(op)

return count

Inside Init I call IterateHierarchy; if I do it with the first object, he prints all my objects.
However when I try to do it with the tagobject it returns None Objects.

I get them by this:
global firstobject
firstobject = doc.GetFirstObject()
global tagobject
tagobject = tag.GetObject()

Does anybody see the problem here?
Thanks in advance for your awesome help!

On 30/10/2014 at 16:22, xxxxxxxx wrote:

Well, for one "tag" isn't a predefined variable. You'll need to find it using

doc.GetActiveTag()

In addition to that, the tag needs to be selected for it to be found.

Also, for your method to print all of the objects in your scene, you need to select a tag on the very first object in the scene. This works for me:

  
import c4d   
from c4d import gui   
#Welcome to the world of Python   
  
def GetNextObject(op) :   
        if op == None:   
            return None   
  
        if op.GetDown() :   
            return op.GetDown()   
  
        while not op.GetNext() and op.GetUp() :   
            op = op.GetUp()   
  
        return op.GetNext()   
  
def IterateHierarchy(op) :   
    if op is None:   
        return   
  
    count = 0   
  
    while op:   
        count += 1   
        print op.GetName()   
        op = GetNextObject(op)   
  
    return count   
  
def main() :   
    if (doc is None) or (not doc.IsAlive()) :   
        return   
       
    firstobject = doc.GetFirstObject()   
    if (firstobject is None) or (not firstobject.IsAlive()) :   
        return   
       
    tag = doc.GetActiveTag()   
    if (tag is None) or (not tag.IsAlive()) :   
        return   
       
    tagobject = tag.GetObject()   
       
    IterateHierarchy(tagobject)   
  
if __name__=='__main__':   
    main()   
  

Perhaps you want to find the first object in your scene from a tag? Try:

first_object = tag.GetDocument().GetFirstObject()