the drag vector of the current frame
if dragging is happening or not
origin position for the drag
Resets the dragging state
Detects if the interactor is being dragged and returns dragVector if that happens. Detection algorithm: if the distance between the interaction point and the origin position exceeds the dragging threshold, then dragging is happening.
position that is used to compute the drag vector
the dragVector as a vec3 if dragging and null otherwise
Manages the logic for the dragging behaviour, especially detects when dragging happens, and provides the associated dragVector