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nParticle instancing attaches one or more specified pieces of geometry to a particle system. The instanced geometry then inherits the motion and much of the behavior of the particle system. For this example, you'll instance debris and shrapnel to a particle system and add it to the current explosion animation. In addition, you'll control how the instance geometry behaves through expressions and fields.
The goal for the exercises in this section is to add bits of flying debris to the explosion that behave realistically. This means you'll want debris of various sizes flying at different speeds and rotating as the particles move through the air. The first step is to add an nParticle system to the scene that behaves like debris flying through the air.