Customized mouse handler for viewer3d

Is it possible to implement a custom mouse event handler for a viewer3d object?

For example, when the user clicks onto the viewer3d I want to programmatically get the coordinates of the clicked voxel, e.g. to select a segmented object. This is similar to what happens with the "Draw point" tool, but i don't need a popup showing me the coordinates, I want to use them...

Answer 1

[Gebhard Stopper]

UPDATE:

I found something. I'm not completely happy, since it feels a bit hacky, but it works.

I foud out that a viewer3d has a 'AnnotationAdded' event. The event argument passed to the event handler containes the annotation with its coordinates in world space. This can then be converted to voxel coordinates.

addlistener(app.Viewer3D, "AnnotationAdded", @OnNewAnnotation);

function OnNewAnnotation(s,e,a)
    disp(e);
    e.Annotation.Position % XYZ in world coordinates
end

However, I still feel, there should be an easier way to get the coordinates of the clicked voxel...