Rigid bodies and constraints are the core components of a MassFX simulation. The topics in this section are intended to help you understand how to use them.
A rigid body is an object in the physical simulation whose shape and size do not change. For instance, if you make a cylinder in your scene into a rigid body, it might bounce, roll, and slide around, but it never bends or snaps, no matter how much force is applied.
MassFX provides tools for creating rigid bodies as well as adjusting their settings and their physical meshes: objects' representations within the simulation.
As the name suggests, a MassFX constraint (or "joint") restricts the movement of rigid bodies in the simulation. Some examples of constraints in the real world include hinges, nails, zip lines, and axles.
