9

Particle Flow Source 137
part icles produced in the v iewports and when
rendering.
Emitter Icon group
Logo S i ze —Sets the size of the Particle Flow logo,
which appears at the center of the source icon,
as well as the arrow that indicates the default
direction of particle motion.
By default, the logo size is proportional to that of
the source icon; with this control, you can make
it larger or smaller.
This setting affects only the viewport display of
the logo; changing it has no effect on the particle
system.
Icon Type—Choose the basic geometry of the
sourceicon:Rectangle,Box,Circle,orSphere.
Default=Rectangle.
This choice matters only if you use the source icon
astheparticleemitter.Theavailablesizesettings
depend on which icon type you choose, and,
again, are important only if you use the source
icon as an emitter.
The default icon type is Rectangle. If you add a
particle system, and then change the icon t ype to
Box, the icon continues to resemble a rectangle. To
make it look like a box, increase the Height setting.
Lengt h/Dia met er —Sets the length of the Rectangle
and B ox icon types, and the diameter of the Circle
and Sphere icon typ es.
Width—Sets the width of the Rectangle and Box
icon types. Unavailable with the Circle and Sphere
icon types.
Height—Sets the height of the Box icon type.
Available only with the Box icon type.
Show Logo/Icon—Turns display of the logo (w ith
arrow)andicononandoff,respectively.
These settings affect only the viewpor t display of
these items; they have no effect on the particle
system.
Quantit y Multiplier group
These settings determine the p ercentage of the
total number of particles in each flow (page 3–942)
that are actually produced in the viewports and
at render time. They don’t affect the percentage
of particles that are visible; those are determined
by the Display operator (page 2–202) and Render
operator (page 2–206).Youcanusethemtoquickly
decrease or increase the number of par ticles
consistently throughout all events in the particle
system. The maximum setting, 10,000%, lets you
multiply the number of particles generated by the
flow by 100.
The total number of particles is determined by the
combined effects of the following operators and
tests: Birth (page 2–143), Birth Script (page 2–145),
Delete (page 2–146), Collision Spawn (page 2–215),
and Spawn (page 2–230). Scripted operators and
tests can also affect this number.
Viewport—Sets the percentage of the total
number of particles in the system produced in the
viewports. Default=50.0. Range=0.0 to 10000.0.
Render—Sets the percentage of the total number of
particles in the system produced at render time.
Default=100.0. Range=0.0 to 10000.0.