2010

Table Of Contents
Open the third scene for the lesson
To ensure this lesson works as described, open the scene file named
Smoke_Simulation_3.mb. This file is in the GettingStarted directory that you
set as your Maya project:
GettingStarted/nParticles/Smoke_Simulation_3.mb
Fine tuning your smoke effect
With nParticles, you can use dynamic wind generated by the Maya Nucleus
solver to affect the motion of your particles. Gravity and Wind forces generated
by the Nucleus system are different from the Maya dynamic forces that you
create with Maya Fields. Nucleus forces are internal, meaning that they only
affect Nucleus objects. Nucleus object that are assigned to the same Nucleus
solver are affected by the same intensity of the solvers wind and gravity.
In this section of this lesson, you create an Axial Magnitude ramp to control
the fields magnitude at various points in the field volume. You specify that
the fields magnitude gradually increases from the bottom of the volume to
its top, so that as the nParticles travel through the field volume, the fields
influence on the nParticles increases. To finish the smoke simulation, you use
the Nucleus Wind to make the smoke drift as it rises.
NOTE If you had other Nucleus objects (nCloth objects or other nParticle objects)
assigned to the same Nucleus solver, they would also be affected by the force of
the wind.
To create an Axial Magnitude ramp
1 In the Outliner, select Field_Smoke1.
2 In the Attribute Editor, expand the Volume Control Attributes section,
and browse to the Axial Magnitude section.
3 Click in the Axial Magnitude ramp to create two new markers, and create
a ramp by setting the following:
InterpolationSelected
Value
Selected PositionMarker
Linear0.5200.0551
Linear0.9000.3152
Open the third scene for the lesson | 949