Simulation noise: Difference between revisions

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{{Short description|Section of maths dealing with creating simulations}}

{{No footnotes|date=October 2024}}

'''Simulation noise''' is a [[function (mathematics)|function]] that creates a [[divergence-free]] vector field. This signal can be used in artistic simulations for the purposespurpose of increasing the perception of extra detail.

The function can be calculated in three dimensions by dividing the space into a regular lattice grid. With each edge is associated a random value, indicating a rotational component of material revolving around the edge. By following rotating material into and out of faces, one can quickly sum the flux passing through each face of the lattice. Flux values at lattice faces are then interpolated to create a field value for all positions.

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==Further reading==

*Patel, M & Taylor, N. December 2005. [https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.611.9001&rep=rep1&type=pdf Simple Divergence-Free Fields for Artistic Simulation]. ''[[Journal of Graphics Tools]]'', Volume 10, Number 4.

*Ivan DeWolf. 2005. [https://www.academia.edu/18125534/Divergence_Free_Noise Divergence-Free Noise].

{{Noise}}