OptionalbodyOptionalcollisionAn Object that specifies the collision filter properties.
The collision filter allows the user to define which types of body this mouse constraint can interact with.
See body.collisionFilter for more information.
OptionalconstraintThe Constraint object that is used to move the body during interaction.
OptionaltypeA String denoting the type of object.
The
Bodythat is currently being moved by the user, ornullif no body.