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ParticleSystem.Particle.randomSeed

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public uint randomSeed;

Description

The random seed of the particle.

Each particle has its own seed, in order to produce deterministic results during simulation. For example, if a particle uses a random color selected from a gradient, the seed ensures that the same color is generated on each frame.

You may also use this seed when generating per-particle random numbers, by passing it to Random.InitState.