The mouse button: 0 is left, 1 is middle, 2 is right.
The browser event type, such as mousedown or mousemove.
The browser event.
The pointer position in pixels, relative to the window element.
The pointer position in pixels, relative to the window element.
The pointer position in world coordinates.
The pointer position in world coordinates.
The payload of MouseInputEvent and of the events that MouseControlSystem dispatches.