How trigger consecutive fiducial placements?

[Chintha_Siva_Prasad]

How to trigger the fiducial placement just after the placement of other fiducial nodes and so on?
I had listened to addNode method like below:

But when I call the addNode method in the script it’s getting into an infinite loop(because of the functions calling each other probably). Even after I commented addNode method its looping for every mouse moment.

[lassoan (Andras Lasso)]

You only need to create single markups fiducial node. You can add any number of control points to it. To keep placement mode active, enable “persistent” option.

I would recommend to put a qSlicerMarkupsPlaceWidget widget on your module GUI to activate/deactivate point placement. It ensures that the correct markups fiducial node is selected, enables/disables placement and persistent option. You can specify persistence by adjusting placeMultipleMarkups property.