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Use IK Joint Damping Uses the IK damping settings as constraints for
hierarchies in the simulation.
Air Resistance group
Density percent Sets the air density in the simulation. A setting of 100 is the
air at sea level. A setting of 0 is a total vacuum.
When anything moves, it hits air resistance (except in space). The faster it
moves, the higher the relative air resistance with the square of the speed. Thus,
air resistance imposes an upper limit on the speed of things that are falling
with gravity, and also makes objects tumble due to the effect of air resistance
on each face of the object.
Close Closes the Dynamics utility.
Dynamics Properties Material Editor rollout
The three spinners in the Dynamics Properties rollout in the Material Editor
let you specify surface properties that affect the animation of an object upon
collision with another object. If there are no collisions in your simulation,
these settings have no effect.
Because the Dynamics Properties rollout is available at the top level of any
material (including sub-materials), you can specify different surface dynamic
properties for each face in an object. There are also controls in the Dynamics
utility that let you adjust the surface properties at the object level, but only
the Material Editor lets you alter the surface properties at the sub-object level
(through use of a Multi/Sub-Object material).
As a default, the values in the Dynamics Properties rollout provide a surface
that's similar to Teflon-coated hardened steel. This is with values of Bounce
Coefficient equal to 1; with both Static Friction and Dynamic Friction set to
0.
Bounce Coefficient Determines how far an object bounces after striking a
surface (the higher the value, the greater the bounce.) A value of 1 represents
a bounce in which no kinetic energy is lost.
3866 | Chapter 15 Animation