/**
                                * The `Matter.Contact` module contains methods for creating and manipulating collision contacts.
                                *
                                * @class Contact
                                */
                                
                                var Contact = {};
                                
                                module.exports = Contact;
                                
                                (function() {
                                
                                    /**
                                     * Creates a new contact.
                                     * @method create
                                     * @param {vertex} [vertex]
                                     * @return {contact} A new contact
                                     */
                                    Contact.create = function(vertex) {
                                        return {
                                            vertex: vertex,
                                            normalImpulse: 0,
                                            tangentImpulse: 0
                                        };
                                    };
                                
                                })();