1. A computer-implemented method for representing a connection between objects in a simulation, the method comprising: identifying, on a source object to be used in a simulation process, a source point that is available for creating a connection to another object; identifying, on a target object, a target point for use in creating the connection, at least one of the source object and the target object being a rigid object; and creating a spring element having respective ends at the source point and the target point, and setting at least one property of the spring element.