The opacity threshold that used to for intersection. (Default: 0) If the object is equal or below the threshold, it is not intersected anymore.
Example: If the value is set to 0.25, all objects that have an opacity of 0.25 or lower and not intersectable.
All currently registered interaction managers with their token as a key.
Add a new interaction manager to the selection of interaction managers. This manager will be fed with all onDown, onMove and onEnd events by the InteractionEngine. The token that is return can be used to remove this interaction manager.
Closes the interaction engine and removes all managers that where registered.
Remove an interaction manager with the token returned when adding it.
The current state of the interaction engine.