[javascript] vtkRenderWindowInteractor doesn't have the function addObserver

Support
1

I want to associate a mousemove event handler to an interactor. this is done in python as

renderWindowInteractor = vtk.vtkRenderWindowInteractor()
renderWindowInteractor.AddObserver("MouseMoveEvent", mousemove)

The problem is that this function doesn’t exist in vtk.js. Is there any way to achieve this?
I am currently using the container of the interactor container.addEventListener('mousemove', mousemove);. But this creates some conflict with current mousemove events (when some manipulator is activated).

Is there a right way of doing this?

My mousemove function is

performanceTimer=performance.now();

function mousemove(event){
    // If any interactor is active or mouse moves too fast do nothing
    if ((performance.now()-performanceTimer<10) || interactor.getInteractorStyle().currentManipulator){
        return;
    } else {
        // Do stuff
        performanceTimer=performance.now();
    }
}
2

vtkRenderWindowInterator trigger the following set of events.

So you should be able to do the following

const subscription = renderWindowInteractor.onMouseMove(mousemove);
3

Hello and thanks

Main question:
Does this onMouseMove come with a throttler, or do I have to make my own hack?

The main problem I have now is that my throttler messes up with the interactor event and the interaction happens only every number of ms (if I decrease them then the system halts with many calls to mousemove, if I increase it all the interactors became laggy)

I need to display the scalar contained int the cell under the mouse, but if any interactor is activated, then don’t trigger this mouse move function.

4

You can throttle the mousemove callback by decorating it.

5

I have solved the interaction conflict by changing this interactor.getInteractorStyle().currentManipulator into event.button>=0. Everything is working as intended now.

Somehow the current manipulator way is not working