2010

Table Of Contents
5 Play back the simulation.
nParticles are emitted from the end of the cigarette, however, they moving
along the X axis and away from the cigarette. This is because the force
of the Nucleus Gravity is not yet affecting the nParticles. By default, the
Cloud type nParticles are created with Ignore Solver Gravity on, so you
need to turn this option off.
6 In the Outliner, select nParticle_Smoke.
7 Open the Attribute Editor by clicking .
8 In the Attribute Editor, click the nParticle_SmokeShape tab.
9 In the Dynamic Properties section, turn off Ignore Solver Gravity.
10 Play back the simulation.
nParticles are emitted from the end of the cigarette, however, they are
falling down and out of the scene. This is because the force of Nucleus
Gravity is negative, so it pulls the nParticles down. You must change the
direction of gravity to force the nParticles up.
11 In the Attribute Editor, click the nucleus1 tab.
12 In the Gravity and Wind section, change the Gravity Direction for Y from
-1.0 to 1.0.
13 Play back your simulation.
The smoke now rises.
934 | Chapter 19 nParticles