PopcornFX v2.8

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  3. PopcornFX v2.8
  4. Concepts
  5. Samplers
  6. Vector-Field sampler

Vector-Field sampler

The vector-field sampler (also named turbulence sampler) allows you to sample vector-fields from procedural curl noises or on-disk files. It is useful to fake fluid movement, such as particles of smoke, sparks, or ashes, flowing through a turbulent medium:

Vector field sampler
Turbulence affecting particles physics


Vector fields are sampled with a 3D position and return a 3D vector.


Vector field samplers are most commonly used with the following templates:

  • Physics
  • TurbulenceSample


Note: If you need a coherent random-looking value, you can use the Noise node or script function instead of the vector field sampler set to ‘procedural’ mode: It will be much cheaper during simulation.


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