Setting camera target and using the pan tool moves everything except target

Question

Hi,
I have a JavaScript which sets the camera target using the code below.
var setTarget = function(strNodeName) {
    for (var intCounter = 0; intCounter !== scene.nodes.count; intCounter++) {
        var node = scene.nodes.getByIndex(intCounter);
        if (node.name.indexOf(strNodeName) === 0) {
            var camera = scene.cameras.getByIndex(0);
            camera.target = node;
This works great for the rotate and spin tool. But hen I use the pan tool, everything moves except the node that was set as target.
Why is this happening and how can I prevent this?

Answer 1

James, thank you very much for the VI, now i understand what you meant by initialising the shift registers. You're right about my text-based programming background, and seeing how you've implemented the case selection really helped. The removal of the mathscript modules does reduce lag quite a lot, too, and now everytihng works exactly as it should. I set the initial servo positions and rawx/rawy values, extended the error line the way you suggested, and added a division by two after the array summation, in order to get an average, rather than a near-double result. 
I agree with you and 22v10 that slicing the image up into quadrants might have been a better idea to begin with. The 'center band' that is set in the current vi works quite well and i'll stick with it for now, since i won't have much more time to work on this project. 
I avoided adding tilt for now because i thought it would only complicate things. Now that panning works, i've duplicated the method and adjusted it for tilt. 
I'm also considering removing the Vision Assistant nodes, since for calibration purposes i need to go into it and create new templates from scratch every time, and this will only get more tedious as i start experimenting with more complex 'targets'. A more viable solution is presented here, where everything is set once the application is launched. 
Please find attached an updated copy of the VI. It's a bit laggy, i'll continue working on it and updating. 
James, thank you again for providing a working solution. I'd love to give you credit when the project's finished.
Attachments:
image tracking camera centering-update 2, working.vi ‏916 KB