2009

Table Of Contents
To change an active rigid body to a passive rigid body
1 Select pCube1 and display the Attribute Editor.
2 Click the rigidBody1 tab to display the rigid body attributes.
3 In the Rigid Body Attributes section, turn off Active to make pCube1 a
passive rigid body. Hide the Attribute Editor.
4 Go to the start of the playback range and play the animation.
Observe how pCube1 no longer reacts to the impact of the ball, but the
ball continues to bounce off it.
Beyond the lesson
In this lesson you learned some fundamental concepts with respect to rigid
body dynamics.
There are differences between active and passive rigid bodies.
When a rigid body is passive, active rigid bodies can collide with it but
will not move it. You can control its movement by setting keys.
When a rigid body is active, you control its movement using dynamic
forces, specifically fields and collisions. You can change the active and
passive state of the rigid body to achieve various effects. For example, you
can roll a ball off a table using keys (passive rigid body) then cause the ball
to fall using gravity (active rigid body).
A hinge constraint can be used between an active rigid body and a position
in the scene view.
Beyond the lesson | 499