Assembling Parts into a Four Bar Mechanism

This example shows how to assemble instances of a modularly designed link into a four bar mechanism (crank-rocker type). The Crank and Rocker Links are copies of the same link, with different length, density and color parameters. The links are reused from the CompoundBody example. The Connector link is a slightly modified version of the same link. The four bar starts at an initial state and moves under the influence of gravity.