Windshield wiper mechanism

A car's windshield wiper mechanism is displayed on this video. An electrical motor and a slidercrank mechanism is used to achieve the blades' reciprocating motion.
Jumpin Boogie Woogie by Audionautix is licensed under a Creative Commons Attribution license (creativecommon...)
Artist: audionautix.com/

[@razlal4301]

can you tell degree of freedom of this???