The Nucleus and Dynamic Movement

nParticles and the Nucleus:

To adjust the Fields on an nParticle

In the nParticle Attribute editor click the nucleus1.

To use dynamics including fields and nucleus gravity and wind:

1. Turn on Enable

2. Turn OFF Enable to prevent any Fields from affecting the objects attached to this nucleus


1. on or off - controls the viewing of the N icon in the window

Transform Attributes

1. Allows you to move, scale and rotate the Nucleus

Gravity and Wind

Gravity - 9.8 is the magnitude of the gravity on earth. You can use a negative number as well.

     *** If you want the Fields to have control - not the nucleus, set Gravity to 0.

Gravity Direction - x, y, and z

Air Density - the mass of the atmosphere - this affects the Drag. 0 = low density and no drag, 10 = high density and slows things down.

     *** If you want the Fields to have control - not the nucleus, set Air Density to 0.

Wind Speed - 0 = no wind and 1.0 means a fast wind speed (0-1 values)

Wind Direction - x, y, z

Wind Noise - random direction and speed of the wind (0-1 values)

nParticles and the Nucleus

Each nParticle has a nucleus

When you make an nParticle you can make a new nucleus

If you want to change which nucleus an emitter is attached to, you can:

1. Select the particle or the emitter in the Outliner

2. Fields/Solver menu - Assign Solver - select one or create a New Solver

My selecting which nucleus your particles and emitter is attached to, you can control the gravity, wind, collisions and other dynamic relationships.

Next Lecture: [Fields]