2010

Table Of Contents
For a realistic smoke simulation, the nParticles must gradually disperse as they
rise in the air. You can use the Radius Scale ramp to increase the radius of
nParticles as they age, which creates the effect of smoke dispersing until it
gradually disappears.
To set nParticle size
1 In the Particle Size section, set Radius to 5.0.
2 In the Radius Scale section, select the first marker in the ramp, set Selected
Position to 0.016, and set Selected Value to 0.04.
Creating a new marker allows you to set two Selected Value and Selected
Position values. Each Selected Value specifies a scaling value for the
nParticle object's Radius attribute. By default, ramps define a scaling value
of 1, meaning that only one mark exists on the ramp and that marker
Editing nParticle Lifespan and Radius | 937