The rigid body is the basic building block of reactor simulations. You can use a rigid body in reactor to simulate any real-world object that doesn't change its shape, from a pen to a boulder hurtling down a mountainside.
You can create a rigid body using any geometry in a 3ds Max scene. reactor then lets you assign the properties the object should have in the simulation, such as mass, friction, and whether the body can collide with other rigid bodies. You can also restrict the possible movement of your rigid bodies in the simulation using constraints such as hinges and springs.
This chapter shows you how to create and work with rigid bodies in reactor. It includes the following topics:
Storing and Accessing Collisions
To find out how to simulate objects that change their shape over time, see Deformable Bodies.