2009
dummy is the parent object (that is, drag from the geometry object to
the dummy). The distance between the
pivots on page 3475 of the two
objects determines the radius of the bubble motion.
3 In Particle View, add a Shape Instance operator on page 2904 and a Spin
operator
on page 2863 to the event in which the bubble motion is to occur.
4 Click the Shape Instance operator and specify the dummy object as the
particle geometry object.
5 Click the Spin operator and set appropriate values for Spin Rate and
Variation. For Spin Axis, keep the default setting of Random 3D.
The result is particle motion in which the particles bob about while moving
along their paths, similar to bubble motion.
Events
How can I branch an event to several other events?
Particle Flow includes several Split tests, which let you send some particles to
another event based on quantity, selection, or source. You can use any number
of these in a single event to send parts of the particle stream to different events,
and then use a
Send Out test on page 2990 to redirect the remaining particles
to another event. Keep in mind that any tests subsequent to the first can work
only with particles remaining in the event, not necessarily all particles that
begin in the event.
Does it matter which order I put actions in an event?
It depends. If an event contains two or more operators of the same type, such
as Shape, the last one overrides the rest. If an event contains two or more tests,
they are evaluated and particles redirected in the order in which the tests
appear.
However, if two actions in an event control the same properties, the interaction
is more complex. An action that works on a continuous basis will typically
prevail over one that affects particles only when they first enter the event. For
example, both the
Find Target test on page 2970 and Speed operator on page
2871 can control particle speed and direction, but the test works continuously,
while the operator takes effect only once. If an event contains both, particle
speed and direction will be primarily controlled by the test, in general, even
if the operator comes after the test. However, the operator's settings will still
have some influence over particle behavior, particularly if its Speed value is
Particle Flow | 2809