2009

3 If you’ve disabled any parameters in the Match section of the Match-Move
rollout prior to a match-move, the camera being matched must be already
set correctly in the scene for those parameters. For example, if you disable
roll and FOV, you must already have set the camera to the correct FOV
and roll orientation, either directly in 3ds Max, or as a result of a previous
match-move. The matching algorithm uses all the “fixed” camera
parameters to compute the ones being estimated and simply won’t work
if they’re fixed at incorrect values.
4 You may know that some of the camera parameters don’t vary during a
match sequence, but you aren’t sure of their values. One approach to this
situation is to enable all parameters for an initial match and then apply
a straight-line average filter to them in the Move Smoothing rollout. This
automatically disables them in the Match section and with luck sets them
at a good estimate of the fixed position.
Dynamics Utility
Utilities panel > Utilities rollout > More button > Utilities dialog > Choose
Dynamics.
The term dynamics refers to a system of controls that generate keys to produce
animation that simulates real-world physics. For example, using standard
keyframing techniques to animate a bouncing ball, you create keys that move
the ball down to the floor, squash the ball, move the ball back up, and so on.
Using a dynamics system, you assign physical properties to the ball and the
floor (such as friction or amount of bounce), specify which object will collide
against another object (for example, the ball with the floor), place an effect
(such as gravity), in the scene, and then calculate a solution over a range of
frames. The result is a number of keys that produce an animation in which
the ball drops due to the gravity effect, collides with the floor and reacts
naturally based on its surface characteristics.
NOTE As of 3ds Max 5, the preferred tool for dynamics simulation is reactor,
available from the Utilities panel. The reactor plug-in lets you control and simulate
complex physical scenes with ease. reactor supports fully integrated rigid and
soft-body dynamics, cloth simulation, and fluid simulation.
Objects and Space Warps Used to Create Dynamics Simulations
A very basic simulation would involve creating a sphere and a gravity space
warp, adding the sphere to a new simulation, assigning gravity as an effect
3852 | Chapter 15 Animation