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nParticles and AiRandom

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Getting random colors per frame?

Particles have a unique identifier called “nodeHandle”.

  • Using aiUserDataInt
    • attribute “particleId”
  • aiRandom
    • type : color
    • Plug aiUserDataInt into the aiRandom color
  • TIP: Using a aiRange to take the Red from the Random and range it.
    • Example range Red float 0-1 to 0-7 for things like switch nodes

What this does is takes the particle ID ( Number could be in the millions) and uses that to drive a random number. The aiRandom outputs a Red value of 0-1.

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