2009

The possible options are:
■ Absolute Time Time refers to the overall time of the system. Each particle
will reach its target orientation at the frame number specified by Time.
■ Particle Age Time refers to the time elapsed since the birth of the particle.
Each particle will reach its target orientation when its age reaches the value
specified by Time.
■ Event Duration Time refers to the time elapsed since the particle entered
the current event. Each particle will reach its target orientation when it
has been in the current for the number of frames specified by Time.
Duration The number of frames particles should take to reach the target
orientation. Default=30.
Variation The number of frames by which Duration can vary randomly.
Default=0.
To obtain the actual time to the target orientation for each particle, the system
multiplies the Variation value by a random number between -1.0 and 1.0, and
then adds the result to the Duration value. For example, if Duration=60 and
Variation=20, then the time to target orientation for each particle would be
between 40 and 80 frames.
Target Rotation group
When you use an orientation-type operator with Go To Rotation, this setting
lets you determine whether the test sets the target orientation on a one-time
or ongoing basis. Default=Constant.
Constant Defines that the orientation-type operator sets a constant orientation
for a particle.
For example, when using a Rotation operator set to an orientation matrix
other than Speed Space Follow, the Go To Rotation operator would acquire
the target orientation only once, and then use it as its goal.
Changing Defines that the orientation-type operator sets a changing rotation
for a particle. At each frame the desirable final rotation may be different.
For example, if you use the test with a Rotation operator set to Speed Space
Follow, the test will adjust the particle rotation constantly to aim at the
changing final rotation.
Particle Flow | 2985