2009

Rotation Operator
Particle View on page 2811 > Click a Rotation operator in an event or add a
Rotation operator to the particle system and then select it.
The Rotation operator lets you set and animate particle orientation during an
event, with optional random variation. You can apply orientation in any of
five different matrices: two random and three explicit. For some options you
can set a degree of random variation or divergence from the specified
orientation.
To cause particles to spin, use the
Spin operator on page 2863.
Interface
The user interface appears in the parameters panel, on the right side of the
Particle View dialog.
Orientation Matrix group
The Orientation Matrix setting includes options that give particles random
orientations, or let you specify orientation in any of three different ways.
Default=Random 3D.
Random 3D Gives each particle an arbitrary, random 3D orientation.
Random Horizontal Gives each particle an arbitrary, random 3D orientation
about the Z axis only. Rotation about the X and Y axes doesn't change (unless
Divergence is used), so the particles remain vertical.
Particle Flow | 2861