ID Userdata Q

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 15/01/2012 at 08:09, xxxxxxxx wrote:

Started looking at adding and removing user data

I can see how to add
and remove

now if I have this correct
the remove relies on the number ID

obj.RemoveUserData([c4d.ID_USERDATA, 1])

But if a user has already added user data
the number will not always start at one

2 Qs:

1 how do you get that number
2 how do you track the user data items that you add?

I've tried getting the number ID_USERDATA but with no luck

I can only get what I think is referred to as a tuple
(1,15,0)
and guessing this is reflects the user data (numerical index, type, ???)

thoughts appreciated

Paul

add a cube
add user data
select cube
run script

  
import c4d
from c4d import gui
#Welcome to the world of Python
  
  
  
def main() :
    c4d.CallCommand(13957); # Clear console
    doc = c4d.documents.GetActiveDocument()
    sel_obj = doc.GetActiveObject()
    id_with_bc = sel_obj.GetUserDataContainer()
  
    for id, bc in sel_obj.GetUserDataContainer() :
        print id, bc, bc[c4d.DESC_NAME], bc[c4d.ID_USERDATA]  
  
  
    print " "
    print "is this the id", id_with_bc[0][0]
  
  
if __name__=='__main__':
    main()

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 20/01/2012 at 02:51, xxxxxxxx wrote:

Hi Paul,

When we call AddUserData(), it returns a DescID (the tuple you are refering to) containing the identification data we can then send to RemoveUserData().
If the user data has not been added by our code, we can get the DescID by looping trough the user data container with GetUserDataContainer().

Here is an example showing how to deal with user data DescID, DesLevel, type etc.:

import c4d
  
  
def AddLongDataType(obj) :
    if obj is None: return
  
    bc = c4d.GetCustomDatatypeDefault(c4d.DTYPE_LONG) # Create default container
    bc[c4d.DESC_NAME] = "Test"                        # Rename the entry
  
    element = obj.AddUserData(bc)     # Add userdata container
    
    for i in range(0, element.GetDepth()) :
        print element[i].id                  # element[i] is a DescLevel object
        print element[i].dtype
    
    # element[0] is for c4d.ID_USERDATA
    # element[1] is for our user data
    
    print "Added user data : ", element[1].id
    
    obj[element] = 30                 # Assign a value
    c4d.EventAdd()                    # Update
  
def RemoveLongDataType(obj) :
    for element, bc in obj.GetUserDataContainer() :
        if element[1].dtype == c4d.DTYPE_LONG:
            if obj.RemoveUserData(element) :
                print "Removed user data : ", element[1].id
            
            # To remove the data we could also call:
            # obj.RemoveUserData(element[1].id)
            # obj.RemoveUserData([c4d.ID_USERDATA, element[1].id])
    c4d.EventAdd()                    # Update
  
  
def main() :
    AddLongDataType(op)
    RemoveLongDataType(op)
  
if __name__=='__main__':
    main()

Yannick