I wrote two Python Effectors that changes clone offset. Clone offset picks which child of the cloner gets cloned or the blending between those children. Keep in mind that offsetting clones does not change clone’s id number.

Clone offset

With the first Python Effector you can give clone id and child id to the input field and therefore you can change which child of the Cloner is chosen to that clone.

Syntax is [clone id, child id]. Clone and child indexes starts from 0 (zero). So, if you want that third clone is second child of the Cloner you would put [2,1]. You can modify as many clones as you please.

import c4d
from c4d.modules import mograph as mo

def main():
    try: # Try to execute following
        md = mo.GeGetMoData(op) # Get MoGraph data
        if md is None: return False # If there is no data, quit

        data = op[c4d.ID_USERDATA,1] # Get user data input
        c = data.replace('\n','') # Remove line breaks
        c = c.replace('\r','') # Remove carriage returns
        c = c.replace('[','') # Remove '[' characters
        c = c.split(']') # Split string to list using ']' character as a delimiter
        c.remove('') # Remove empty items from list
        clen = len(c) # Get length of the list

        gen = md.GetGenerator() # Get generator
        cnt = md.GetCount() # Get number of clones
        cln = md.GetArray(c4d.MODATA_CLONE) # Get clone array
        nchd = float(len(gen.GetChildren())) # Get number of generator's children
        fall = md.GetFalloffs() # Get falloffs

        for i in range(0, cnt): # Loop
            if i < clen: # If 'i' is not greater than length of the 'clen' list
                clone_id = int(c[i].split(',')[0]) # Get clone id
                child_id = int(c[i].split(',')[1]) # Get child id
                cln[clone_id] = (1/nchd) * child_id # Offset clone
    except: # If something goes wrong
        pass # Do nothing

    md.SetArray(c4d.MODATA_CLONE, cln, True) # Set clone array data
    return True

ar_effector_clone_offset.c4d v1.0.0 (2023.1.3)

Clone offset with weight threshold

With the second Python Effector you can change clones depending on weight transformation. You can choose number of the child and adjust the threshold. I don’t know how useful this tool is but it was fun to make.

import c4d
from c4d.modules import mograph as mo

def main():
    md = mo.GeGetMoData(op) # Get MoGraph data
    if md is None: return False # If there is no data, quit

    thd = op[c4d.ID_USERDATA,2] # Threshold
    cid = op[c4d.ID_USERDATA,3] # Chosen child id

    gen = md.GetGenerator() # Get generator
    cnt = md.GetCount() # Get number of clones
    cln = md.GetArray(c4d.MODATA_CLONE) # Get clone array
    warr = md.GetArray(c4d.MODATA_WEIGHT) # Get weight array
    nchd = float(len(gen.GetChildren())) # Get number of generator's children
    fall = md.GetFalloffs() # Get falloffs

    for i in reversed(range(0, cnt)): # Loop through clone count
        if warr[i] >= thd: # If clone weight is equal or greater than threshold
            cln[i] = (1/nchd)*(cid) # Offset clone

    md.SetArray(c4d.MODATA_CLONE, cln, True) # Set clone array data
    return True

ar_effector_clone_offset_weight_threshold.c4d v1.0.0 (2023.1.3)