8

Empty Flow 205
Empty Flow (page 2–205)
Standard Flow (page 2–205)
See also
Operators (p age 2–138)
Tests (page 2–206)
Empty Flow
Particle View (page 2–1 21) >depot
Empty Flow provides a starting point for a
particle system consisting of a sing le global event
containing a R ender operator. This lets you build
a system completely from scratch, without having
first to delete the default operators provided by the
Standard Flow system.
TouseEmptyFlow,dragitfromthedepotto
the event display. In Particle View, this creates a
global event containing a single Render operator.
If the Global default display option is active in the
Particle View > Options menu, the global event
will also contain a Display operator. Adding an
Empty Flow also creates a Particle Flow Source
icon in the viewports, at the world ori gin (0,0,0).
Note: If an orthogonal viewport is act ive w hen you
add an Empty Flow to the system, the software
orients the new source icon parallel to the plane
oftheactiveviewport,withthedefaultemission
direction pointing forward. For example, if the
Fron t viewport is active, the icon is oriented
parallel to the XZ plane in the world coordinate
system, with the default emission direction along
thepositiveYaxis. IfaCameraorPerspective
viewport is active, Particle Flow uses the default
orientation: parallel to the XY plane, pointing in
thenegativeZdirection.
See also
Standard Flow (page 2–205)
Standard Flow
Particle Vie w (pag e 2–121) >depot
Standard Flow provides a starting point for
a particle s ystem consisting of a global event
containing a Render operator, wired to a birth
event containing a Birth, a Position, a Speed, a
Rotation, a Shape, and a Display operator, with all
parameters set to default values. This is the same
system that the software creates automatically
when you add a Particle Flow icon to the viewport.
To use Standard Flow, drag it from the depot to
the event display. In Particle View, t his creates
theparticlesystemdescribedabove.IftheGlobal
default display option is active in the Particle
View > Options menu, the g lobal e vent wil l also
contain a Display operator. Adding a Standard
Flow also creates a Particle Flow Source icon in the
viewports, at the world origin (0,0,0).
Note: If an orthogonal viewport is active when you
add a Standard Flow to the system, the software
orients the new source icon parallel to the plane
of the active viewp ort, with the default emission
direction pointing forward. For example, if the
Fron t viewport is active, the icon is oriented
paralleltotheXZplaneintheworldcoordinate
system, with the default emission direct ion along
the positive Y axis. If a Camera or P erspective
viewport is active, Particle Flow uses the default
orientation: parallel to the XY plane, pointing in
the negative Z direction.
See also
Empty Flow (page 2–205)