Hello, @zipit ! I ended up using GetClone() to solve the AddUserData issue.

A little after that, I found myself in a corner again: unfortunately, there's no way to retrieve Userdata selection in the Attributes Manager - that's why I narrow down my Userdata tracks to only those that will be manipulated by using GetCTracks. Among Userdata, Vectors show up with their components, though, and this means matching by name becomes impossible without slicing. Checking the type allows me to know when slicing is needed. This time, it was much easier to pass values as an argument, they were at hand, so I did apply your first solution, effortlessly.

Polymorphism... I haven't heard of it since my C++ days... about 25 years ago, when I thought I'd be a real coder.

This script I'm about to finish will speed up my 3D workflow tremendously.

Once again, thanks a lot!

@zipit Hey, thanks for your quick reply.

It's definitely a solution, but it forces me to pass the value, which means more code tweaking than what I intended to go for.

Thanks again!

Hello, there!

My goal here is to create temporary Userdata.

...
bContainer = c4d.GetCustomDataTypeDefault(myType)
bContainer[c4d.DESC_NAME] = "TempData"
myID = obj.AddUserData(bContainer)
...

It turns out myType is not an integer, which is what GetCustomDataTypeDefault expects, it's a <type 'float'> passed along from a source somewhere else. Yet, another function could make it a vector instead... Is there a way to cross check myType with c4d.DTYPE_REAL, c4d.DTYPE_VECTOR, and so on, or simply get the proper integer value based on type dynamically?

Or should I drop this idea altogether and get Basecontainers from different sources with GetClone so I could feed them to the AddUserData method whenever necessary?

Thanks for your time,

Leo

I'm from the Music realm, and I've dealt with all kinds of hardware/software. Cinema 4D gets to be at the very top in every single aspect, support team included.

Thanks again, I'll close this topic now.

@zipit said in PYTHON - Userdata CTracks and Basecontainer:

For user data the first DescLevel of the DescID will always be c4d.ID_USERDATA which is necessary because the namespace here is not curated by Maxon or or the plugin author so they had to introduce a sub namespace to make the ID unambiguous (there might be a user data element with the ID 1000 but also a static description element with that same first DescLevel)

Those lines should be near the top of any official explanation concerning Userdata in Python. Now that C4D is going Subscription, more and more people will struggle thru this.

Your help was invaluable @zipit ! Thanks a lot for your time(and patience). I think I'm finally starting to get the hang of all this. Here's the code that works:

def main():
    objs = doc.GetActiveObjects(c4d.GETACTIVEOBJECTFLAGS_SELECTIONORDER)
    
    obj = objs[0] #Grab the Null that has relevant Userdata only
    
    UD_ids, UD_names, UD_types, UD_values = [],[],[],[]
    
    for descID, bc in obj.GetUserDataContainer():
        #list of IDs
        UD_ids.append(descID)
        
        #list of names
        UD_names.append(bc[c4d.DESC_NAME]) 
        
        #list of types
        UD_types.append(type(obj[descID]))
        
        ##list of values
        UD_values.append(obj[descID])
                
    print "Userdata Names: " + str(UD_names)
    print "Respective IDs: " + str(UD_ids)
    print "Respective types: "+ str(UD_types)
    print "Respective values: " + str(UD_values)
    print " "
    
    srcObjs = obj.GetCTracks() #This is just a test. Only 'Stratocaster_R' is supposed have a CTrack
    srcObj = srcObjs[0] #For Testing purposes
    
    if UD_names[0][:-2] == srcObj.GetName()[:-2]: #For testing purposes, the actual code will create tracks inside the loop
        tgt_descID = UD_ids[0]
    
    print tgt_descID
    
    track = obj.FindCTrack(UD_ids[0])
    
    if track == None:
        print str("There are no keyframes at the \'"+str(UD_names[0])+"\' Userdata parameter.")
        print ("Creating one now.\n ")
        track = c4d.CTrack(obj, tgt_descID) #Create Track using descID
        obj.InsertTrackSorted(track)
        obj.Message(c4d.MSG_UPDATE)
        c4d.EventAdd()

@zipit That bad? Gee... this one is gonna break my brain! Thanks!!!

@zipit Hey, again! I've just tested your script and it definitely works, but it leaves duplicate tracks behind. I'm pretty sure there's an easy way out for it.

I have to spend more time analyzing your code to learn this stuff right.

I did make another attempt, but it failed tremendously!

When I say "full name", I mean I want to iterate thru Userdata parameters just as I do when I get a list from srcObjs = objs.GetCTracks() , or in a similar fashion. That's what I've been doing with the info retrieved from the Basecontainer.

Please, have a look at this rather short code of mine. Once again, thanks a lot!

import c4d
from c4d import gui
        
def main():
    objs = doc.GetActiveObjects(c4d.GETACTIVEOBJECTFLAGS_SELECTIONORDER)
    
    obj = objs[0] #Grab the Null that has relevant Userdata only
    
    UD_ids, UD_names, UD_types, UD_values = [],[],[],[]
    
    for descID, bc in obj.GetUserDataContainer():
        UD_ids.append(descID[1].id) #list of IDs
        UD_names.append(bc[c4d.DESC_NAME]) #list of names
        UD_types.append(type((obj[c4d.ID_USERDATA,descID[1].id]))) #list of types
        UD_values.append(obj[c4d.ID_USERDATA, descID[1].id]) #list of values
    
    #just checking if I'm really looking at the right data.
    print "Userdata Parameters: " + str(UD_names)
    print "Respective IDs: " + str(UD_ids)
    print "Respective types: "+ str(UD_types)
    print "Respective values: " + str(UD_values)
    print " "
    
    srcObjs = obj.GetCTracks() #This is just a test for this specific Null. Only 'Stratocaster_R' is supposed have a CTrack for now.
    
    srcObj = srcObjs[0] #this is meant to work just once, for this test.
    
    if UD_names[0][:-2] == srcObj.GetName()[:-2]: #Force test to see if name comparisons are really working.
        print str((srcObj.GetName())+" -> Match Found!\n ")
    
    track = obj.FindCTrack(UD_ids[0])

    if track == None:
        print str("There are no keyframes at the \'"+str(UD_names[0])+"\' Userdata parameter.")
        print "Creating a track for it now...\n "
        
        track = c4d.CTrack(obj, UD_ids[0]) #Create Track using the first Userdata ID.
        obj.InsertTrackSorted(track)
        obj.Message(c4d.MSG_UPDATE)
        c4d.EventAdd()
        
        print "Look at the Timeline... the Null has a new track, but it's not where I want it to be. It's not even Userdata!\n "
        print "I tried GetClone() earlier, and it gave me a duplicate of Stratocaster_R. Just as bad.\n "
        print "If I were a programmer, and the World depended on my skills, it would have ended long ago.\n "
        
        tgtTestObjs = obj.GetCTracks()
        print tgtTestObjs
    
        
if __name__=='__main__':
    main()

Hello, @zipit! Thanks for your input.

This is a very interesting approach of yours, and I sure do like to learn new stuff. The truth is I didn't phrase my question properly, I'm sorry for the trouble.

I said "keyframe the basecontainer", that's totally wrong, I know. I should have said something like "create a track based on that basecontainer match". In other words, I need to find the whole path back to the object that holds that specific UserData parameter.

I don't think GetClone() will do the trick here. The reason is there's more funcionality that comes from the script's dialog box, things like frame range, frame offset, besides prefix/suffix, custom prefix/suffix, and so on... That's why I've been meaning to create tracks on target Userdata that don't have keyframes yet. By the way, this wouldn't leave Userdata that match and already have tracks out of my target list.

So, I guess, the question remains, is it possible to get a "full name" for Userdata that don't have tracks based on my basecontainer name match? If so, I'd like to create a track for it right away - a simple keyframe with its current value should do. I'm currently looking at DescID here. I can feel the answer is close... all help is appreciated.

Thanks again,

Leo

Hello, there!

I'm trying to copy values from one Userdata parameter to another. My python script gets all CTracks available, then seeks matches by using GetUserDataContainer, since not all parameters in Userdata necessarily have keyframes. For example, have a look at this picture:

Stratocaster_R and Stratocaster_L get a match inside a function that returns a basecontainer:

for bContainer in uData:
     if bContainer[1][1][:suffixCount_L:] == sourceObj.GetName()[:suffixCount_R:]:
          return bContainer

How would I keyframe that matching basecontainer so I can get a CTrack from it later?

Thanks in advance,

Leo

P.S.: The source and target information comes via dialog box, the script knows it's supposed to look for the _R suffix as source and _L as target beforehand.

Thanks, m_magalhaes!