Xpresso Object Index can not connect output ports with Python

JoelJohera

To whom it may concern,
I am trying to connect the outputs of an Object Index Node to other nodes. I know it can be done as via the GUI I can do it but I can not do it with Python.
This is the code I have:

import c4d

def main():
    doc = c4d.documents.GetActiveDocument()
    null = doc.SearchObject("Null")
    sphere = null.GetDown()
    xtag = c4d.BaseTag(c4d.Texpresso)
    null.InsertTag(xtag)
    gv = xtag.GetNodeMaster()

    # Object Index Node
    object_index_node = gv.CreateNode(gv.GetRoot(), c4d.ID_OPERATOR_DETAILS)
    object_index_node_in_instance = object_index_node.GetInPorts()[0]
    object_index_node_out_index = object_index_node.GetOutPorts()[0]
    object_index_node_out_instance = object_index_node.GetOutPorts()[1]

    # Sphere Node
    sphere_node = gv.CreateNode(gv.GetRoot(), c4d.ID_OPERATOR_OBJECT)
    sphere_node[c4d.GV_OBJECT_OBJECT_ID] = sphere
    sphere_node_in_object = sphere_node.AddPort(c4d.GV_PORT_INPUT, c4d.GV_OBJECT_OPERATOR_OBJECT_IN)

    # Motion Data Node
    motion_data_node = gv.CreateNode(gv.GetRoot(), 1019010)
    motion_data_node_in_index = motion_data_node.GetInPorts()[0]
    motion_data_node_in_object = motion_data_node.GetInPorts()[1]

    # Connections
    object_index_node_out_instance.Connect(sphere_node_in_object)
    print(object_index_node_out_instance)
    object_index_node_out_index.Connect(motion_data_node_in_index)
    print(object_index_node_out_index)

    c4d.EventAdd()


if __name__=='__main__':
    main()

In the console, I get:

False
False

I get this:

And I am looking for this:

Also I am using c4d.ID_OPERATOR_DETAILS to generate the node as in __init__.py matched the 400001152 number that the node has if it is created via the GUI.
Thank you for your time.
Joel Johera

ferdinand

Hey @JoelJohera,

your code simply contains a bug, you are using the wrong indices when you blindly index into the lists of ports.

Cheers,
Ferdinand

import c4d

def main():
    doc = c4d.documents.GetActiveDocument()
    null = doc.SearchObject("Null")
    sphere = null.GetDown()
    xtag = c4d.BaseTag(c4d.Texpresso)
    null.InsertTag(xtag)
    gv = xtag.GetNodeMaster()

    # Object Index Node
    object_index_node = gv.CreateNode(gv.GetRoot(), c4d.ID_OPERATOR_DETAILS)
    object_index_node_in_instance = object_index_node.GetInPorts()[0]
    object_index_node_out_index = object_index_node.GetOutPorts()[1] # You had the wrong indices here ...
    object_index_node_out_instance = object_index_node.GetOutPorts()[0] # ... and here.

    # Using indices the find ports is always a bit risky, because the user can reorder them. 

    # Sphere Node
    sphere_node = gv.CreateNode(gv.GetRoot(), c4d.ID_OPERATOR_OBJECT)
    sphere_node[c4d.GV_OBJECT_OBJECT_ID] = sphere
    sphere_node_in_object = sphere_node.AddPort(c4d.GV_PORT_INPUT, c4d.GV_OBJECT_OPERATOR_OBJECT_IN)

    # Motion Data Node
    motion_data_node = gv.CreateNode(gv.GetRoot(), 1019010)
    motion_data_node_in_index = motion_data_node.GetInPorts()[0]
    motion_data_node_in_object = motion_data_node.GetInPorts()[1]

    # Connections
    object_index_node_out_instance.Connect(sphere_node_in_object)
    print(object_index_node_out_instance)
    object_index_node_out_index.Connect(motion_data_node_in_index)
    print(object_index_node_out_index)

    c4d.EventAdd()


if __name__=='__main__':
    main()

JoelJohera

Thank you so much