Set nParticle mass
When nParticles are created or emitted, they
appear in the simulation with a mass set by the Mass attribute.
You can vary nParticle mass during the simulation by setting the Mass
Scale ramp. The Mass Scale ramp
allows you to map per-particle Mass values
to nParticle properties such as Particle ID, Radius,
and Age.
For information about setting nParticle per-particle
attribute ramps, see
Working with nParticle attribute ramps.
To
set nParticle mass
- In
the scene view, select the nParticle object you want to edit.
- In
the Attribute Editor, select the
nParticle object’s nParticleShape tab.
- Under Dynamic
Properties, set the Mass value.
- (Optional)
Set the Mass Scale Randomize to add
a randomized multiplier to the per-particle Mass values.
To
set the nParticle Mass Scale ramp
- In
the scene view, select the nParticle object for which you want to
set a Mass Scale ramp.
- In
the Mass Scale section of the nParticleShape
node Attribute Editor, create the
mass value curve by setting values for Selected Position and Selected
Value. For more information, see
Mass Scale.
- Set
an Interpolation method to determine
how particle mass blends between each position on the ramp. See
Interpolation.
- Set Mass
Scale Input to determine which attribute is used as the
input attribute for the Mass ramp.
See
Mass Scale Input.
- (Optional)
Set Input Max to define the range
of the Mass Scale ramp. See
Max Input.
- (Optional)
Set the Mass Scale Randomize to add
a randomized multiplier to per-particle Mass values.
See
Mass Scale Randomize.