The Orientation rollout
controls the way particle seeds are oriented on surfaces. The orientation
information can be used by the Birth Paint and Placement Paint operators
to rotate particles in space. These options are useful when you
plan to use instanced shapes with a visible orientation as particles.
ImportantTo have these settings
affect the particle seeds, set these parameters before you create
the seeds. Changing these parameter values after creating particle
seeds has no effect on the existing seeds' orientation.
- Generate Rotational Comp.
Enables control over
the orientation of particle seeds. The remaining settings on this
rollout are available only when this check box is on.
X-Axis and Z-Axis groups
- Priority Axis
Sets the axis as the primary
axis. When the X axis is chosen as the Priority Axis, each particle
first aligned by its local X axis in the manner specified in the
drop-down list, and then the local Z axis is used. If the Z axis
is chosen as the Priority Axis, each particle is aligned first by
its local Z axis, and then its X axis.
Reverses the direction
of the Priority Axis. This has the effect of rotating particles
by 180 degrees so they point in the opposite direction.
- [orientation list]
Use this drop-down list to
specify how Particle Flow orients particles with respect to the
surface of the painted object.
the particles on the surface at random, according to the chosen axis.
- Align to Surface NormalAligns
particles to the surface normal of the object upon which they were
painted. For example, if X is selected as the Priority Axis, the
local X-axis for a particle is aligned with the surface normal.
This option is suitable for placing instanced grass or hair objects
on a surface.
- Align to World X/Y/Z-AxisAligns
the particles along the respective world axis.
- Look at ViewportForces
all particles to align with the active viewport.
- Look at Particle Paint IconForces
all particles to face the Particle Paint Icon.
- Follow StrokeAligns
particles along the spray path in the direction in which the stroke
- Align to U/V/W Map VectorAligns
particles along the U/V/W mapping direction on the surface of the
Sets the maximum degree
of variation off the chosen Priority Axis, expressed in degrees.