Retrieve the newly created object from the "IK_TAG_ADD_GOAL" command?

bentraje

Hi,

I have this code that clicks the "Add Goal" in the IK Tag. This creates a null that corresponds to the goal. Is there a way to access this null after creation?

Currently I have this:

IKGoal = c4d.CallButton(IKTag, c4d.ID_CA_IK_TAG_ADD_GOAL)
print(IKGoal)

#returns NONE rather than the Null IK Goal

It creates a newly created Null object that represents the IK Goal but when I print(IKGoal), it results to none rather than the Null IK Goal.

Is there a way around this?

Thank you for looking at the problem

s_bach

Hello,

using CallButton() is the same as pressing the button in the GUI. So the CallButton() function does not return anything.

The "Add Goal" functionality creates a new Null object. This null object is inserted after the host object of the tag. Sou you could simply get the "next" object to get the goal object.

tag = doc.GetActiveTag()
if not tag:
    return
    
# should check for type of course
# ...

c4d.CallButton(tag, c4d.ID_CA_IK_TAG_ADD_GOAL)

# assume that the newly created null object is now the next object after the host object
hostObject = tag.GetObject()
nextObject = hostObject.GetNext()

print(nextObject)

Alternatively, you could simply read the now defined BaseLink to the goal object:

c4d.CallButton(tag, c4d.ID_CA_IK_TAG_ADD_GOAL)
goalObject = tag[c4d.ID_CA_IK_TAG_TARGET]

best wishes,
Sebastian

bentraje

@s_bach

Thanks for the revised script Sebastian. I tried both code and it worked as expected.
But may I ask an additional question:

Where did you retrieved this: [c4d.ID_CA_IK_TAG_TARGET]?
I cannot find it in the documentation. It's not also present in the script log. Whenever I modified it, it only appears with a cryptic number: 10001

I like it because it's descriptive and helps me understand the code better.

s_bach

Hello,

you can drag and drop parameters into the Python console. Then you will see the parameter symbol.

See Python Console.

Best wishes,
Sebastian

bentraje

Gotcha. Thanks for clarification!