LINK EFFECTORS TO CLONERS

[Hugo BATTISTELLA]

Hello,
I'm very new on python and I would like to know how to link the "pyhton effector" I create in this exemple to the cloner. I tried to use the InsertObject function but it seems that it's not working. TEST_CLONERS_1.c4d

I run on R21

Can you help ?

import c4d
from c4d import gui
from c4d.modules import mograph as mo

def cloner_creation():
    Cloner = c4d.BaseList2D(1018544)
    Cloner[c4d.ID_MG_MOTIONGENERATOR_MODE] = 3
    Spheres = c4d.BaseList2D(5160)

    doc.InsertObject(Cloner)
    doc.InsertObject(Spheres)
    Spheres.InsertUnder(Cloner)



def effectorsCreation():
    Effector = c4d.BaseList2D(1025800)
    
    EffectorList = c4d.InExcludeData() # Initialize an InExclude data
    
    Cloner.InsertObject(EffectorList) # Add effector to effectors list
    doc.InsertObject(Effector)

# Main function
def main():
    cloner_creation()
    effectorsCreation()
    c4d.EventAdd()


# Execute main()
if __name__=='__main__':
    main()

[bentraje]

Hi,

Not quite directly a revision of your code but this should help you get started.

import c4d
from c4d import gui

# Main function
def main():
    cloner = doc.SearchObject("Cloner") # Assuming there is already a Cloner Mograph Object 
    plain_effector = doc.SearchObject("Plain")# Assuming there is already a Plain Effector Object 

    effector_list = c4d.InExcludeData()
    effector_list.InsertObject(plain_effector, 1)

    cloner[c4d.ID_MG_MOTIONGENERATOR_EFFECTORLIST] = effector_list
    c4d.EventAdd()


# Execute main()
if __name__=='__main__':
    main()

[ferdinand]

Hi @Hugo-BATTISTELLA,

thank you for reaching out to us and thank you @bentraje for providing help.

The major problem with your code is that you have the line Cloner.InsertObject(EffectorList) in there. But there is no variable of the name Cloner within the scope of effectorsCreation. Which is why your code will raise a NameError on this line. But even if the variable Cloner from your function cloner_creation would be visible within effectorsCreation, it would still raise an AttributeError, because your Cloner is of type BaseObject which has no attribute (i.e., method) of the name InsertObject.

I would also recommend not to insatiate an c4d.InExcludeData from scratch, because you will lose any existing links by doing so and then writing back that newly allocated InExcludeData. In this case here it does not really matter, since you also instantiate the MoGraph cloner, i.e., its effectors list will still be empty. Below you can find a commented section of your code and a proposal how I would write something like that (which is effectively also what @bentraje did).

Cheers,
Ferdinand

The code:

import c4d

# This is a lightly commented version of your code, pointing out the major
# problem with your version.
"""
def effectorsCreation():
    Effector = c4d.BaseList2D(1025800)
    # This does not do anything; it just creates an InexCludeData instance.
    EffectorList = c4d.InExcludeData() # Initialize an InExclude data
	
    # That does not work, Cloner is not visible in this scope, it would also
    # be an BaseObject, which does not have a InsertObject method.
    Cloner.InsertObject(EffectorList) # Add effector to effectors list
    doc.InsertObject(Effector)
"""

def CreateClonerSetup():
    """
    """
    # Instantiate a MoGraph cloner and Python effector. One can also use
    # BaseList2D.__init__(), this version here is just more verbose.
    cloner = c4d.BaseObject(1018544)
    effector = c4d.BaseObject(1025800)
    
    # Get a copy of the InExcludeData Effectors parameter of the cloner.
    inExcludeData = cloner[c4d.ID_MG_MOTIONGENERATOR_EFFECTORLIST]
    # Add the effector in an activated state (1)
    inExcludeData.InsertObject(effector, 1)
    # Important, we have to write the modified InExcludeData back, since we
    # only retrieved a copy of it.
    cloner[c4d.ID_MG_MOTIONGENERATOR_EFFECTORLIST] = inExcludeData
    
    # Add both nodes to the currently active document.
    doc.InsertObject(effector)
    doc.InsertObject(cloner)
    
    # Update Cinema 4D.
    c4d.EventAdd()

if __name__=='__main__':
    CreateClonerSetup()

[Hugo BATTISTELLA]

Thank you @bentraje and @ferdinand !

You make the deal of the EffectorList function much clearer ! It works well now